JP5579427B2 - Indirect hot wire work tool support device - Google Patents

Description

  The present invention relates to a support device that assists various tools used for work when the worker performs work on a live wire such as a power cable, and more specifically, a tool or mechanism corresponding to the work content. The present invention relates to an indirect hot wire working tool support device for operably supporting an indirect hot wire working tool having a longitudinal direction installed in a tip portion.

  In recent years, in order to prevent the occurrence of an electric shock disaster, an indirect hot wire construction method in which an operator works without directly touching a live wire such as a power cable is becoming widespread.

  This indirect hot-wire method is a tool that can be attached to and removed from the tip (replaceable) according to the work content, and has a bar-like insulation operating rod that is elongated in one direction, or the tip of the main body that is elongated in one direction. The work is performed using an indirect hot wire working tool such as an insulated jacket equipped with a gripping mechanism for gripping cables and the like.

  And the said indirect hot wire work tool can maintain the distance of a work target and a worker while aiming at electrical insulation between the part which a worker hold | grips, the tool of a front-end | tip part, etc. FIG.

  By the way, when working on a live line, an operator will ride on a bucket of an aerial work vehicle and operate an indirect live line work tool, but the indirect live line work tool has a longitudinal direction in one direction. Since a tool or the like is attached to the distal end portion, a load load applied to the worker's arm is large, and the worker is burdened with a large work load.

  In such a current situation, in order to reduce the work burden on the worker, a support tool and a support device for supporting the indirect hot wire work tool in an auxiliary manner when performing work are provided.

  Such a support includes a trunk front body that is disposed in front of the operator's torso, and suspension means that hangs on the operator's neck and shoulders and suspends the trunk body in front of the operator's trunk. And the support tool is provided with a support part for supporting the base end part of the indirect live-line work tool on the front surface of the trunk front body, and the base part of the indirect live-line work tool is supported by the support part. Thus, the indirect live-line work tool can be operated by tilting it vertically and horizontally.

  Thereby, when the worker performs the work, the load of the indirect live work tool is received by the operator's neck and shoulder, and therefore the load burden on the worker's arm can be reduced. (For example, refer to Patent Document 1).

  On the other hand, the support device includes a base attached to the bucket, a support arm that is connected to the base and extends in the lateral direction, and can be lifted and tilted in the vertical direction and swiveled around an axis extending in the vertical direction. , A holding means that can be tilted at the tip of the support arm and can hold an indirect live work tool, and a balance force that generates a force that opposes the force acting on the support arm and the support portion (opposite direction) Means.

  Such a support device is provided at the tip of the indirect live work tool by holding the indirect live work tool in the holding means and moving the support arm up and down in this state or tilting the support arm and the support part. The work can be performed by moving the tool or the like moved to the work position, and the arrangement and posture of the indirect live-line work tool can be maintained by applying force by the balance force generating means.

  Therefore, since the load of an indirect hot wire work tool does not act on the worker who performs work, the support device is said to be able to reduce the work load of the worker (see, for example, Patent Document 2).

JP 2009-596A JP-A-9-163533

  However, since the support tool is configured to support the indirect hot wire work tool by the support part of the front part of the trunk suspended from the neck and shoulder of the worker, the load burden on the worker's arm can be reduced. However, there is room for improvement from the viewpoint of reducing the work burden on the worker because the worker receives the load of the indirect hot wire work tool. In addition, since the support tool supports the base end portion of the indirect live-line work tool on the support part of the front part of the trunk, the operation range of the indirect live-line work tool is limited. May be inhibited. That is, the support tool can be operated only within a limited range of operations of the indirect hot-line work tool, and there is a problem that the degree of freedom of work is limited.

  On the other hand, since the support device holds the indirect live-line work tool on the holding means, the worker does not receive the load of the indirect live-line work tool, and the above-mentioned viewpoint reduces the work load on the worker. Better than the support.

  However, since the support device is limited in the lifting and lowering range of the support arm and the tilting range of the support arm and the holding means, the operation range of the indirect live work tool is restricted, and the operation of the indirect live work tool is hindered. May be. That is, like the support tool, the support device can be operated only within a limited range of operation of the indirect hot-line work tool, and there is a problem that the degree of freedom of work is limited.

  Then, in view of such a situation, the present invention provides an indirect live-line work tool support device that can support the indirect live-line work tool in an auxiliary manner without inhibiting the operation of the indirect live-line work tool. Is an issue.

An indirect hot-wire work support device according to the present invention is an indirect hot-wire work tool support device for operably supporting an indirect hot wire work tool having a longitudinal direction in one direction, and is a winding device for winding a rope. An apparatus main body in which a drum is rotatably mounted around a predetermined axis, and a cable guide body that is connected to the apparatus main body and guides a cable drawn out from a winding drum. And a biasing means configured to apply a rotational force in a direction in which the rope is wound around the winding drum, the rope guide body being configured to be attachable to a side wall defining a bucket of the work vehicle. A first guide portion extending upward from the apparatus main body, the first guide portion configured by a pipe, and connected to the upper end of the first guide portion, than the head of an operator who has boarded the bucket second guide portion extending in the cross direction and the first guide portion at a high position There are, together and a second guide portion which is constituted by a pipe, is configured to guide by inserting the rope drawn from the take-up drum in a first guide portion and the second guide portion, wherein A holding means for holding an indirect hot wire working tool is provided at the tip of the rope.

  The indirect hot wire work tool support device having the above-described configuration is configured such that the rope from the winding drum is a rope guide body (first guide part and second guide part) by attaching the apparatus main body to the side wall of the bucket of the aerial work vehicle. ) And is guided to a position higher than the head of the worker who rides on the bucket, and the holding means provided at the tip of the rope is suspended from the tip (upper end) of the rope guide body. It becomes a state.

  The indirect hot wire working tool support device having the above-described configuration is configured such that when the operator operates the indirect hot wire working tool held by the holding means, the rope is pulled along with the movement of the indirect hot wire working tool. It is pulled out from the take drum. At this time, the rotational force applied to the take-up drum by the urging means opposes the force (drawing force) acting on the rope, and the holding means (the held indirect live wire work tool) is connected to the rope guide body. Since a force to pull up toward the upper end acts, when the operator operates the indirect live-line work tool, the load (downward force) of the indirect live-line work tool is a force to pull up the holding means ( Is offset by upward force). Therefore, the indirect hot-wire work tool support device having the above-described configuration can perform work without an operator burdening the load of the indirect hot-wire work tool.

  In addition, the indirect hot wire working tool support device is configured to be able to pull out the strip from the winding drum, and can be wound around the winding drum, that is, holding means provided at the tip of the curved strip. Since the indirect live-line work tool is held by the cable, the rope is pulled out or curved in response to the operation (movement) of the indirect live-line work tool.

  Therefore, the indirect live-line work tool support device having the above-described configuration can prevent the indirect live-line work tool from being dropped in high-altitude work and can reduce the work burden on the operator. Indirect hot-line work can be performed without hindering operation.

  As one aspect of the present invention, the rope guide body may be configured to be rotatable around the axis of the first guide portion. In this way, the suspending position of the rope can be changed in the lateral direction so as to follow the operation (movement) of the indirect live line work tool, so that the operability of the indirect live line work tool is further enhanced. Can do.

As another aspect of the present invention, the rope guide body may be configured such that the first guide portion is extendable in the vertical direction. In this way, since the height of the hanging position of the rope can be changed, for example, the hanging position of the rope is positioned according to the height of the operator riding on the bucket (position above the head). Can be changed.
As still another aspect of the present invention, the second guide portion includes a second guide portion main body connected to the first guide portion, and a brake mechanism for stopping the pulling of the rope, and the brake mechanism is a pipe. A rope insertion portion configured to be inserted into the second guide portion main body, the rope insertion portion rotatable in a normal posture and a tilted posture, and the second guide portion main body. A claw portion extending at the tip of the rope insertion portion, the rope insertion portion being sandwiched with the inner peripheral surface of the second guide body in a posture in which the rope insertion portion is tilted with respect to the second guide body. It is good also as a structure provided with the nail | claw part which stops pulling out of a rope.

  As described above, according to the present invention, it is possible to achieve an excellent effect that the indirect live-line work tool can be supplementarily supported without hindering the operation of the indirect live-line work tool.

BRIEF DESCRIPTION OF THE DRAWINGS It is a general view of the indirect hot wire work tool support apparatus which concerns on one Embodiment of this invention, Comprising: The state attached to the bucket of an aerial work vehicle is shown. The schematic sectional drawing of the apparatus main body of the indirect hot wire work tool support apparatus which concerns on the embodiment is shown. 1 shows an overall schematic cross-sectional view of an indirect hot wire work tool support device according to the embodiment. FIG. The A section enlarged view of FIG. 3 is shown. It is the B section enlarged view of Drawing 3, Comprising: (a) shows a normal state and (b) shows the state where extraction of a rope was stopped.

  Hereinafter, an indirect hot wire work tool support device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

  As shown in FIG. 1, the indirect hot wire working tool support device according to the present embodiment is attached to a bucket C of an aerial work vehicle (not shown), and has a long rope 10 that is elongated in one direction. An apparatus main body 20 in which a take-up drum 200 to be wound is rotatably mounted around a predetermined axis, and a line guide body that is connected to the apparatus main body 20 and guides the rope 10 drawn from the take-up drum 200. 30.

  The apparatus main body 20 is configured to be attachable to a side wall that defines a bucket C of an aerial work vehicle. The apparatus main body 20 according to the present embodiment includes a box-shaped casing 201 that houses a winding drum 200, and a hook 202 that is hooked on the side wall of the bucket C is attached to the outer surface of the casing 201. Further, as shown in FIG. 2, the apparatus main body 20 includes urging means 203 that applies a rotational force to the winding drum 200 in a direction in which the rope 10 is wound around the winding drum 200.

  More specifically, the apparatus main body 20 according to the present embodiment includes a winding drum 200 that winds the rope 10 that is elongated in one direction, a frame 205 that pivotally supports the winding drum 200, and a rope. There are provided biasing means 203 for applying a rotational force to the winding drum 200 in the direction of winding the strip 10, and a casing 201 in which these are housed.

  The rope 10 is a rope or a chain. The rope 10 only needs to have electrical insulation on at least the outer surface. For example, the wire 10 is coated with the outer surface with a material having electrical insulation, or the entire material is electrically insulating (for example, resin Or fiber) is used. The rope 10 according to this embodiment employs a flat rope knitted with resin fibers. More specifically, a rope formed by weaving fibers made of aromatic polyamide resin (Kevlar (registered trademark)) so as to have a flat cross section is employed as the rope 10. And the holding | maintenance means 40 which hold | maintains the indirect hot wire work tool T is provided in the front-end | tip part of the rope 10 (refer FIG.1 and FIG.3).

  The winding drum 200 according to the present embodiment is formed like a pulley. In other words, a cylindrical drum body 200a and a pair of flanges 200b and 200c extending radially outward from both ends of the drum body 200a are provided. Since the indirect hot wire working tool support device 1 according to the present embodiment employs a rope having a flat cross section for the rope 10, the winding drum 200 has a pair of hook-shaped portions 200b, 200c having a rope spacing. It corresponds to the width (width in the direction perpendicular to the flat direction), and the rope is wound in a line between the pair of hook-shaped portions 200b and 200c.

  The winding drum 200 has a shaft body 204 inserted through the center of the drum body 200a. In the present embodiment, the shaft body 204 is prevented from rotating with respect to the take-up drum 200 (in this embodiment, the rotation is stopped by the key K). The shaft body 204 is supported on both sides of the winding drum 200 by bearings 206 and 206 attached to the frame 205. Thereby, the winding drum 200 is provided so as to be rotatable about the axis of the shaft body 204 together with the shaft body 204.

  Further, the indirect hot wire working tool support device 1 according to the present embodiment includes a transmission member 207 for transmitting the urging force of the urging means 203 to the winding drum 200. The transmission member 207 is formed in a disc shape, and one end side of the shaft body 204 integrated with the take-up drum 200 is inserted therethrough, and is prevented from rotating with respect to the shaft body 204 (in this embodiment). Is prevented by a key K). In the present embodiment, as described above, since the shaft body 204 is pivotally supported via the bearings 206 and 206 on both sides of the winding drum 200, the transmission member 207 is separated from one bearing 206 in the shaft body 204. It is fixed to the part that extends outward. The transmission member 207 is provided with a first connecting portion 208 to which the urging means 203 is connected so as to receive the urging (rotational force) of the urging means 203.

  The frame 205 includes a pair of shaft support portions 205a and 205b that support the shaft body 204, and a rotational force counter portion 205c that receives a reaction force generated when the biasing means 203 biases the winding drum 200. ing. The pair of shaft support portions 205a and 205b and the rotational force countering portion 205c are all formed in a plate shape, and the pair of shaft support portions 205a and 205b are spaced apart from each other so that the winding drum 200 can be interposed therebetween. The opposing part 205c is arranged at an interval at which the biasing means 203 and the transmission member 207 can be interposed with respect to the one shaft support part 205a. In the present embodiment, the pair of shaft support portions 205a and 205b and the rotational force countering portion 205c are integrated with their lower ends connected to a common base 205d.

  As described above, the bearings 206 and 206 that support the shaft body 204 are mounted on the pair of shaft support portions 205a and 205b, respectively. Needless to say, the bearings 206, 206 of the shaft support portions 205a, 205b are arranged concentrically.

  The rotational force counter part 205 c is provided with a second connecting part 209 to which the urging means 203 is connected so as to receive a reaction force of the urging (rotational force) of the urging means 203. In addition, the 1st connection part 208 is provided in the rotational force opposing part 205c side, and the 2nd connection part 209 is provided in the one axial support part 205a side.

  The biasing means 203 according to the present embodiment is constituted by a spiral spring 203, and the shaft body 204 is loosely inserted in the center. The spiral spring 203 has one end connected to the first connecting portion 208 and the other end connected to the second connecting portion 209 in a state where the shaft body 204 is loosely inserted. As a result, when the winding drum 200 is rotated in one direction (the direction in which the cord 10 is pulled out), the spiral spring 203 is elastically deformed, and the restoring force causes the other direction opposite to the one direction with respect to the winding drum 200. An urging force (rotational force) in the direction of winding the rope 10 is applied.

  As described above, the casing 201 includes the winding drum 200, the frame 205, and the urging means 203 and is formed in a box shape, and the frame 205 (base 205d) is fixed to the bottom. As shown in FIG. 3, the casing 201 is provided with an outlet 210 (opening) for pulling out the wire 10 drawn out from the winding drum 200 to the outside. In the present embodiment, an outlet 210 is provided in the upper part of the casing 201.

  The cable guide 30 is connected to a first guide part 300 extending upward from the apparatus main body 20 and an upper end of the first guide part 300, and the apparatus main body 20 is attached to the bucket C in a state where the apparatus main body 20 is attached to the bucket C. The first guide part 300 and a second guide part 301 extending in the crossing direction are provided at a position higher than the head of the worker W who has boarded the bucket C (see FIG. 1).

  The rope guide body 30 according to the present embodiment is formed of a pipe and is set to have an inner diameter through which the rope 10 can be inserted.

  More specifically, the first guide part 300 is set to have an inner diameter larger than the dimension in the width direction of the rope 10 and has a lower end connected to the apparatus main body 20 and the inner cylinder. The outer cylindrical body 303 is fitted on the outer wall 302. In the first guide part 300, the outer cylinder 303 is slidable in the vertical direction along the inner cylinder 302. Moreover, the 1st guide part 300 which concerns on this embodiment is rotatable around the inner cylinder 302 (around the axis line extended in an up-down direction).

  As shown in FIG. 4, the indirect hot wire work tool support device 1 according to the present embodiment is provided with a fixing means 304 that fixes the outer cylinder 303 to the inner cylinder 302 at a plurality of positions in the sliding direction. The fixing means 304 according to the present embodiment includes a plurality of annular grooves 304 a formed on the outer peripheral surface of the inner cylinder 302 at intervals in the axial direction, and an outer cylinder that can be moved in and out of the outer cylinder 303. The lock pin 304b is equipped with a lock pin 304b, and the tip of the lock pin 304b is fitted into any one of the annular grooves 304a. Thereby, the outer cylinder 303 can be rotated around the axis at each fixed position while being fixed at a plurality of positions in the vertical direction.

  Returning to FIG. 3, the rope guide body 30 according to the present embodiment includes a single pipe set to have an inner diameter larger than the dimension in the width direction of the rope 10 (an inner diameter larger than the outer diameter of the inner cylinder 302). By bending, the outer cylindrical body 303 of the first guide part 300 and a part of the second guide part 301 are integrally formed. Such a pipe is made of a material having electrical insulation, and is formed of glass fiber in the present embodiment.

  And the rope guide body 30 which concerns on this embodiment is connected to the apparatus main body 20 (casing 201), and the lower end of the 1st guide part 300 (inner cylinder 302) from the winding drum 200 as mentioned above. The pulled-out rope 10 is inserted. That is, the lower end of the inner cylinder 302 of the rope guide 30 is connected to the upper portion of the casing 201 so that the outlet 210 of the casing 201 and the inner hole communicate with each other.

  As described above, a part of the second guide portion 301 according to the present embodiment (a second guide portion main body 305 to be described later) is formed integrally with the first guide portion 300 (outer cylinder 303), and at the tip thereof. A brake mechanism 306 is provided for stopping the pulling of the rope 10 when the downward force acting along with the pulling of the rope 10 becomes large. That is, the second guide portion 301 according to the present embodiment includes a second guide portion main body 305 connected to the first guide portion 300 and a brake mechanism 306 coupled to the tip of the second guide portion main body 305. Has been.

  As described above, the second guide portion main body 305 is formed of a glass fiber pipe. Along with this, a reinforcing tubular member is concentric with the pipe inside the pipe. 307 is decorated. On the other hand, as shown in FIGS. 5 (a) and 5 (b), the brake mechanism 306 includes a wire insertion portion 308 made of a pipe having the same diameter as the second guide portion main body 305, and the wire insertion. A pair of extending portions 309a and 309b extending so as to face each other at one end of the portion 308, and a claw portion 310 extending at the distal ends of the pair of extending portions 309a and 309b are provided.

  The brake mechanism 306 includes a second guide portion main body 305 (in a state in which the pair of extension portions 309a and 309b are inserted into the second guide portion main body 305 so as to be rotatable around an axis extending in the lateral direction. In this embodiment, it is pivotally attached to a cylindrical member 307). In the brake mechanism 306 according to the present embodiment, the pair of extending portions 309a and 309b are coupled to the second guide portion main body 305 so that the rotation shaft does not exist in the second guide portion main body 305 (the center region of the hole). ing. That is, the pair of extending portions 309a and 309b has a pin-shaped shaft portion 311 protruding on the outer surface facing the inner peripheral surface of the second guide portion main body 305 (in this embodiment, the cylindrical member 307). The shaft portion 311 is inserted into a recess or a hole provided on the inner peripheral surface of the second guide portion main body 305 (in the present embodiment, the cylindrical member 307). As a result, the brake mechanism 306 can rotate (tilt) about an axis extending in the lateral direction.

  The brake mechanism 306 is normally in a posture in which the rope insertion portion 308 is continuous with the second guide portion main body 305 (the posture in which the center line of the rope insertion portion 308 and the center line of the second guide portion main body 305 are continuous). Thus, return biasing means (not shown) for biasing the wire insertion portion 308 upward is provided. The return biasing means is made of a spring material such as a torsion coil spring.

  And the said nail | claw part 310 is provided so that it may be located in the downward direction of a rotation center (shaft part 311) by the normal state (normal attitude | position which the rope insertion part 308 continued with the 2nd guide part main body 305). . That is, the claw portion 310 is formed to be positioned at a position displaced downward from the center of the second guide portion main body 305 in a normal posture. And the rope 10 penetrated by the 1st guide part 300 and the 2nd guide part 301 is penetrated by the rope insertion part 308 so that the upper side of the nail | claw part 310 may be passed.

  Thereby, as shown in FIG.5 (b), the indirect hot wire work tool support apparatus 1 which concerns on this embodiment acts with the drawing | drawing-out force of the rope 10 facing downward, and the drawing | drawing-out force is for resetting. When the urging force of the urging means is won, the cable insertion portion 308 tilts with the shaft portion 311 as a fulcrum, and accordingly, the claw portion 310 that rotates with the shaft portion 311 as a fulcrum is the second guide portion main body. The rope 10 is sandwiched with the inner peripheral surface of 305 (cylindrical member 307), and the drawing of the rope 10 is stopped. When the downward force becomes smaller than the urging force of the return urging means, as shown in FIG. 5A, the rope insertion portion 308 returns to the normal posture, and accordingly, the claw portion 310 is moved to the first position. As a result of being separated from the inner peripheral surface of the two guide portion main bodies 305 (cylindrical member 307), the cord 10 is released from being pinched (the cord 10 can be pulled out or wound by the winding drum 200). It has become.

  Returning to FIG. 1, various types of holding means 40 can be adopted as long as the holding means 40 can hold the indirect hot wire working tool T. In the present embodiment, the base end portion of the indirect hot wire working tool T is inserted. A cylindrical holding member 400 and a tightening member 401 for reducing the diameter of the holding member 400 are configured. The holding member 400 has a male screw (not shown) formed on the outer periphery, and two or more slits (not shown) extending from one end to the other end side with an interval in the circumferential direction. On the other hand, the tightening member 401 is formed in a cylindrical shape, and a female screw (not shown) that engages with the male screw of the holding member 400 is formed on the inner periphery. The holding means 40 having the above-described structure is a portion in which slits are formed by screwing the fastening member 401 into the holding member 400 after the base member of the indirect hot wire working tool T is inserted into the holding member 400. Is reduced in diameter so that the indirect hot wire working tool T can be held.

  The indirect hot-wire work tool support device 1 according to the present embodiment is as described above, and the operation of the indirect hot-wire work tool support device 1 will be described next.

  In the indirect hot wire work tool support device 1 according to the present embodiment, the rope 10 from the winding drum 200 is connected to the rope guide body 30 (with the apparatus main body 20 attached to the side wall of the bucket C of the aerial work vehicle. The first guiding unit 300 and the second guiding unit 301) are guided to a position higher than the head of the worker W who rides on the bucket C, and holding means provided at the tip of the rope 10 40 is suspended from the upper end of the cable guide 30.

  Here, when the head is at a higher position than the second guide portion 301 of the rope guide body 30 due to the height difference of the worker W, or the second guide portion 301 is too far from the head of the worker W. In this case, the rope guide body 30 (first guide part 300) is expanded and contracted in the vertical direction, and the second guide part 301 is disposed at an appropriate position above the operator W's head. That is, after the lock pin 304b of the outer cylindrical body 303 is removed from the annular groove 304a ... of the inner cylindrical body 302, the outer cylindrical body 303 is slid in the vertical direction so that the second guide portion 301 is properly arranged and the position thereof The lock pin 304b is inserted into the annular grooves 304a corresponding to (see FIG. 4).

  Then, the worker W moves the holding means 40 to a position where the indirect live line work tool T can be easily held, and then the base end side (gripping part side) of the indirect live line work tool T according to the work content. Is held by the holding means 40.

  At this time, a pulling force acts on the rope 10 with the movement of the holding means 40, and the rope 10 having a length corresponding to the amount of movement of the holding means 40 is pulled out from the winding drum 200. Further, when the winding drum 200 rotates as the rope 10 is pulled out in this way, one end of the urging means 203 (the spiral spring 203) rotates around the shaft body 204, and is elastically deformed so that the helical pitch is narrowed. Thus, a rotational force in the direction of winding the rope 10 is applied to the winding drum 200 (see FIG. 2).

  As a result, if the operator W accidentally releases the holding means 40 before the holding means 40 holds the indirect hot-wire work tool support device 1, the action of the pulling force on the rope 10 is released, and as a result, the winding drum 200 is rotated by the urging force of the urging means 203, and the drawn wire 10 is taken up by the take-up drum 200. Along with this, the holding means 40 moves toward the upper end of the cable guide 30 and returns to the normal position.

  On the other hand, if the worker W accidentally releases the holding means 40 and the indirect live wire work tool T after the holding means 40 holds the indirect live wire work tool T, the urging force of the urging means 203 is indirectly activated. In the case where the load of the wire work tool T is exceeded, the action of the pulling force on the rope 10 is released, so that the winding drum 200 is rotated by the urging force of the urging means 203, and the drawn rope 10 is pulled out. It is wound around the winding drum 200. Along with this, the holding means 40 and the indirect hot wire working tool T move toward the upper end of the rope guide body 30. Further, when the urging force of the urging means 203 is balanced with the load of the indirect hot wire working tool T, the winding drum 200 is maintained as it is, and the indirect hot wire working tool T is It will be maintained in a state of being suspended through the rope 10 that hangs down from the tip of the second guide portion 301.

  On the other hand, if the biasing force of the biasing means 203 is set small in consideration of the easiness of pulling out the rope 10, the load of the indirect live work tool T against the biasing force of the biasing means 203 is The indirect hot-wire work tool support device 1 will move downward while pulling out the rope 10, but since the urging force of the urging means 203 acts, the indirect hot-wire work tool support device 1 operates at a high speed such as free fall. The indirect live wire work tool T can be collected by pulling the rope 10 before the indirect live wire work tool T falls from the bucket C to the ground.

  In the present embodiment, since the brake mechanism 306 is provided in the second guide portion 301 as described above, the indirect hot-line work tool T is provided even when the biasing force of the biasing means 203 is small as described above. It does not move downward. That is, when the operator W accidentally releases his hand, the indirect hot wire working tool T is suspended in a state where the rope 10 extends straight downward from the tip of the second guide portion 301. A force (load) acting directly below acts on the tip of the rope insertion portion 308, and the rope insertion portion 308 tilts downward with the shaft portion 311 as a fulcrum. Then, the claw portion 310 also rotates with the shaft portion 311 as a fulcrum, the rope 10 inserted above the claw portion 310 is pushed upward by the claw portion 310, and the claw portion 310 is moved to the second guide portion main body 305. The rope 10 is sandwiched with the inner peripheral surface of the (tubular member 307), and the movement of the rope 10 is restricted. Therefore, even if the urging force of the urging means 203 is set to be smaller than the load of the indirect hot wire work tool T, the indirect live wire work tool T will not fall.

  Then, when the operator W operates the indirect hot wire working tool held by the holding means 40, the rope 10 is pulled and pulled out from the winding drum 200 as the indirect hot wire working tool T moves. Then, it is wound around the winding drum 200. At this time, the rotational force applied to the winding drum 200 by the urging means 203 opposes the force (drawing force) acting on the rope 10, and the holding means 40 (held indirect live work tool T) is held. Since a force to pull up toward the upper end of the rope guide body 30 acts, when the operator W operates the indirect live wire work tool T, a load (downward force) of the indirect live wire work tool T is generated. This is offset by the force (upward force) that tries to pull up the holding means 40. Therefore, the worker W can perform work without bearing the load of the indirect hot wire work tool T.

  Further, the indirect hot wire working tool support device 1 according to the present embodiment is configured to be able to pull out the rope 10 from the winding drum 200, and can be wound around the winding drum 200, that is, a flexible rope that can be bent. Since the indirect hot wire working tool T is held by the holding means 40 provided at the tip of the wire 10, the rope 10 is pulled out or bent in accordance with the operation (movement) of the indirect hot wire working tool T. Will do. Moreover, in this embodiment, since the said strip guide body 30 is comprised rotatably around the axis line of the 1st guide part 300, the indirect hot wire work tool T is with respect to the extension direction of the 2nd guide part 301. When the line guide 30 is moved in the crossing direction, the line guide 30 rotates about the axis extending in the vertical direction, and the hanging position of the line 10 is in the horizontal direction so as to follow the operation (movement) of the indirect live wire work tool T. Change position. Thereby, the operativity of the indirect hot wire work tool T can be improved.

  Therefore, the indirect hot-wire work tool support device 1 having the above-described configuration can prevent the indirect hot-wire work tool T from dropping at a high-altitude work and reduce the work load on the worker W. Indirect hot-line work can be performed without impeding the operation of the work tool T.

  In addition, the indirect hot wire work tool support device according to the present invention is not limited to the above-described embodiment, and it is needless to say that the apparatus can be appropriately changed without departing from the gist of the present invention.

  In the above embodiment, the brake mechanism 306 is provided. However, the present invention is not limited to this, and the urging force of the urging means 203 may balance the load of the indirect live work tool T.

  In the said embodiment, although the flat rope was employ | adopted as the filament 10, it is not limited to this, For example, the general rope which makes a cross-sectional circular shape may be sufficient. Further, the rope 10 is not limited to a rope, and may be a chain. That is, the rope 10 can adopt various aspects as long as it is a long one extending in one direction.

  In the said embodiment, although the rope guide body 30 was formed with the glass fiber, it is not limited to this, The thing made from resin or a metal may be used. However, when the wire guide 30 is made of metal, it is preferable to insulate at least the outer peripheral surface (for example, coat with a material having electrical insulating properties).

  In the above embodiment, the rope guide body 30 is configured to be rotatable around the axis of the first guide portion 300 and the first guide portion 300 is configured to be extendable in the vertical direction. However, the present invention is not limited thereto. Instead, for example, the first guide portion 300 may be configured to be extendable in the vertical direction while making the rope guide body 30 non-rotatable, or the rope guide body 30 may be rotatable around an axis extending in the vertical direction. However, you may comprise the 1st guide part 300 so that it cannot expand-contract in the up-down direction. Further, the rope guide body 30 may be non-rotatable and non-extensible.

  In the above embodiment, the fixing unit 304 is mechanically configured. For example, a damper (an oil damper, a gas damper, or the like) as the fixing unit 304 is disposed in an upright state, and one end of the damper is disposed on the outer cylindrical body 303. And the other end of the gas damper may be connected to the lower end side of the casing 201 or the inner cylinder 302. If it does in this way, when the 1st guide part 300 is expanded-contracted, the outer cylinder body 303 can be stopped in arbitrary positions.

  Further, the holding means 40 is not limited to the one described in the above embodiment. For example, the holding means 40 is constituted by a divided body divided into two, and the indirect hot-line work tool is formed by the two divided bodies. It may be configured such that the indirect hot wire working tool T can be held (connected) by sandwiching the proximal end side of T. In addition, when comprising the holding means 40 with two division bodies, the rope 10 should just be connected with any one division body, or the rope 10 should be connected with both of two division bodies.

In the said embodiment, although the rope guide body 30 was comprised with the pipe and the rope 10 was penetrated in the rope guide body 30, it is not limited to this, For example, the rope guide body 30 the (first guide portion 300 and the second guide portion 301), and the middle empty rod, constituted by a plurality of guide rings which are spaced apart in the longitudinal direction of the rod member, the rope 10 guide It may be inserted into the ring and guided (guided) to the overhead of the operator W.

  DESCRIPTION OF SYMBOLS 1 ... Indirect hot wire work tool support apparatus, 10 ... Line, 20 ... Apparatus main body, 30 ... Line guide body, 40 ... Holding means, 200 ... Winding drum, 200a ... Drum main-body part, 200b, 200c ... Spear shape , 201 ... casing, 202 ... hook, 203 ... spiral spring (biasing means), 204 ... shaft body, 205 ... frame, 205a, 205b ... shaft support part, 205c ... rotational force counter part, 205d ... base, 206, 206 DESCRIPTION OF SYMBOLS ... Bearing, 207 ... Transmission member, 208 ... 1st connection part, 209 ... 2nd connection part, 210 ... Outlet, 300 ... 1st guide part, 301 ... 2nd guide part, 302 ... Inner cylinder, 303 ... Outside Cylindrical body 304 ... fixing means 304a ... annular groove 304b ... lock pin 305 ... second guide body 306 ... brake mechanism 307 ... cylindrical member 308 ... line insertion part 309a, 309b ... extension Department, 310 ... claw portion, 311 ... shank, 400 ... holding member, 401 ... clamping member, C ... bucket, K ... key, T ... indirect hot work implement, W ... worker

Claims (4)

An indirect hot wire work tool support device for operably supporting an indirect hot wire work tool having a longitudinal direction in one direction, and a winding drum for winding a rope is provided so as to be rotatable around a predetermined axis. An apparatus main body, and a cable guide body that is connected to the apparatus main body and guides a cable drawn from the winding drum, and the apparatus main body is attached to a side wall that defines a bucket of an aerial work vehicle. A first guide portion that is configured to be capable of being provided with an urging unit that applies a rotational force in a direction in which the rope is wound around the winding drum, and the rope guide body extends upward from the apparatus main body. And a first guide part constituted by a pipe and an upper end of the first guide part, and extending in a direction intersecting with the first guide part at a position higher than the head of an operator who has boarded the bucket. a second guide portion, the second guide portion constituted by a tubular Provided with a, is configured to guide by inserting the rope drawn from the take-up drum in a first guide portion and the second guide portion, the distal end of the rope is indirect hot work tool An indirect hot-wire work tool support device, characterized in that a holding means for holding the device is provided.   The indirect hot wire work tool support device according to claim 1, wherein the rope guide body is configured to be rotatable around an axis of the first guide portion.   The indirect hot wire work tool support device according to claim 1, wherein the rope guide body is configured such that the first guide portion is extendable in the vertical direction.   The second guide part includes a second guide part main body connected to the first guide part and a brake mechanism for stopping the pulling of the rope, and the brake mechanism is a rope insertion part constituted by a pipe. In the normal state, it is inserted into the second guide part main body, the rope insertion part that is rotatable between the second guide part main body and the continuous posture and the tilted attitude, and is inserted into the tip of the rope insertion part. A claw that is an extended claw portion that sandwiches the rope together with the inner peripheral surface of the second guide body in a posture in which the rope insertion portion tilts with respect to the second guide body, and stops the pulling of the rope The indirect hot wire work tool support device according to any one of claims 1 to 3, further comprising a section.

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