JP4796159B2 - Fixing device for hot-line work tools - Google Patents

Description

  Since live line work involves danger, it is preferable to temporarily stop energization, but it is preferable to temporarily stop energization. Hot wire working tools such as sticks made of insulating material and Yatsuko are used.

  Conventionally, when using a live work tool such as the above, for example, when performing a stripping work of a covering portion of an overhead wire, two workers are put on the bucket of an aerial work vehicle, and one of them is Hold the stick with the holding tool attached to the tip, hold and fix the peeling part so that the overhead wire does not move, and another worker holds the stick with the peeling tool attached to the tip and remotely operates with this stick. However, the working method is such that the covering portion is peeled off.

  In the work method as described above, since two workers are required for hot-line work at one place, the present invention is designed to repair overhead wires so that one worker can perform live-line work. A live line for fixing a tool for live line work such as a stick used to hold the tool to a predetermined work position such as a bucket of an aerial work vehicle so that the direction and movement of the tool tip can be freely adjusted. It is an object of the present invention to provide a working tool fixing device.

According to the first aspect of the present invention, an apparatus main body 1 mounted and fixed at a predetermined work location is provided with a ball 5 with a stud 4, and a plurality of grooves 17 are formed on the outer peripheral surface of the ball 5 in parallel to each other in the circumferential direction. A ball 5 is provided; a ball receiving portion 6 for receiving the ball 5; and a pressure fixing means 7 for pressing the ball 5 to the ball receiving portion 6 to fix the ball 5 in a non-rotatable manner. A clamp 8 for removably fixing the hot wire working tool S is provided, and the crimping fixing means 7 is provided on the fluid pressure cylinder 12 and the ball 5 which are concentrically installed on the support member 11 of the apparatus main body 1. the pressing member 15 abuts made and so as to crimp the pressing member 15 by the operation of the fluid pressure cylinder 12 to the ball receiving part 6 the spherical portion 5a between the grooves 17 of the ball 5 is pressed against the ball 5 cylinder Characterized in that it is a crimped section.

According to the second aspect of the present invention, the apparatus body 1 attached and fixed to a predetermined work location is a ball 5 with a stud 4, and a plurality of grooves 17 are formed on the outer peripheral surface of the ball 5 in parallel to each other in the circumferential direction. A ball 5 is provided; a ball receiving portion 6 for receiving the ball 5; and a pressure fixing means 47 for fixing the ball 5 to the ball receiving portion 6 so that the ball 5 cannot be rotated. A clamp 8 for removably fixing the hot wire working tool S is provided, and the crimping fixing means 47 is provided on the rotary shaft 45, which is mounted on the holder portion 3 of the apparatus body 1, and on the rotary shaft 45. The eccentric cam 44 includes a rotation operation lever 46 connected to one end of the rotation shaft 45 and a pressing member 15 in contact with the ball 5. The rotation shaft 45 is rotated by the rotation device lever 46, and the eccentric cam 44 is rotated. Due to eccentric rotation of Characterized in that was attached member 15 is eccentric cam crimp fixing means adapted to crimp the ball receiving part 6 the spherical portion 5a between the grooves 17 of the ball 5 against the ball 5.

The invention according to claim 3 is that the apparatus body 1 attached and fixed to a predetermined work location is a ball 5 with a stud 4, and a plurality of grooves 17 are formed on the outer peripheral surface of the ball 5 in parallel to each other in the circumferential direction. A ball 5 is provided; a ball receiving portion 6 for receiving the ball 5; and a pressure fixing means 57 for fixing the ball 5 to the ball receiving portion 6 so that the ball 5 cannot be rotated. A clamp 8 for removably fixing the hot wire working tool S is provided, and the crimping fixing means 57 is fixed to the fixed cone 48 fixed on the support member 11 of the apparatus main body 1 and the fixed cone 48. A pressing member 50 that contacts the ball 5, a movable cone 49 that wedge-fits between the fixed cone 48 and the pressing member 50, and abuts the movable cone 49 to move the movable cone 49 in the wedge-fitting direction. Extrude A screw shaft 52 to be screwed into the holder portion 3 and an operation lever 51 for rotating the screw shaft 52. By rotating the screw shaft 52 by the operation lever 51, the movable cone 49 is pushed out in the wedge fitting direction. It is a wedge-type crimping fixing means in which the pressing member 50 is pressed against the ball 5 by the wedge action of the movable cone 49 so that the spherical surface portion 5a between the grooves 17 of the ball 5 is crimped to the ball receiving portion 6. .

According to the present invention, the apparatus main body 1 is provided with the ball 5 with the stud 4 , the ball receiving portion 6, and the pressure fixing means 7 for pressing the ball 5 to the ball receiving portion 6 and fixing the ball 5 so as not to rotate. At the same time, the stud 4 is provided with a clamp 8 for removably fixing the hot wire working tool S. By using this fixing device A , for example, a hot wire for holding a repaired portion of the overhead wire C is provided. Since the work tool (stick S) can be fixed to a predetermined work location in a desired posture, the worker M alone needs another live work tool (stick S ′) . Therefore, it is only necessary to perform the necessary hot-line work while remotely operating, so that the hot-line work that has been performed by two people can be carried out by one person, which can contribute to saving labor costs.

  Further, according to the present invention, since the plurality of grooves 17 are provided in the circumferential direction parallel to each other on the outer peripheral surface of the ball 5, when the ball 5 is pressed against the ball receiving portion 6 by the pressing member 15 and is crimped. Further, the groove 17 exerts a biting action on the concave curved surface of the ball receiving portion 6, and the ball 5 is securely fixed to the ball receiving portion 6 by the biting action.

  FIG. 1 is a perspective view showing a use state of a fixing device A for a hot-wire work tool according to the present invention, FIG. 2 is an enlarged perspective view of the fixing device A, and FIG. 3 is an enlarged side sectional view of a main part of the fixing device A. 4 is a partial front view of the fixing device A viewed from the direction of the arrow X in FIG. In these drawings, reference numeral 1 denotes an apparatus main body of a fixing apparatus A, which includes an attachment part 2 attached and fixed to a bucket B of an aerial work vehicle K, and a holder part 3 connected to the upper part of the attachment part 2. In this holder portion 3, a ball 5 having a stud 4 integrally or integrally projecting, a concave curved ball receiving portion 6 for receiving the ball 5, and the ball 5 being pressure-bonded to the ball receiving portion 6. A crimping fixing means 7 for fixing the roller S so as not to rotate is provided, and a clamp 8 for detachably fixing the stick S as a live work tool is integrally connected to the stud 4 of the ball 5.

  As shown in FIG. 3, the holder portion 3 of the apparatus body 1 is fitted to a cylindrical outer tube 9 and an upper side of the outer tube 9 in a state in which it is prevented from being pulled out by the flange portions 9 a and 10 a. A cylindrical ball holding cylinder 10 and a disc-like support member 11 screwed and fixed to the lower side in the outer cylinder 9. The inner diameter of the ball holding cylinder 10 is larger than the diameter of the ball 5. Although slightly larger, the tip portion gradually becomes smaller in diameter, and the concave curved ball receiving portion 6 is formed in the small diameter portion, and the ball 5 is rotatably engaged with the ball receiving portion 6, and the stud 4 protrudes outward from the ball holding cylinder 10. The ball receiving portion 6 is formed in a concave curved surface having substantially the same curvature as the outer peripheral surface of the ball 5.

The pressure fixing means 7 includes a fluid pressure (hydraulic pressure or pneumatic pressure) cylinder 12 concentrically installed on a disk-like support member 11 screwed and fixed to the lower side in the outer cylinder 9, and a ball 5. And a pressing member 15 that abuts against the ball 5 and is a cylinder-type pressing and fixing means that presses the pressing member 15 against the ball 5 by the operation of the cylinder 12 and presses the ball 5 against the ball receiving portion 6. The piston rod 13 is coupled to the pressing member 15 via the coupling tool 14. Reference numerals 16a and 16b denote fluid pressure supply / discharge pipes, and 16c denotes a pump.

  Accordingly, the fluid pressure cylinder 12 is actuated by the fluid pressure (hydraulic pressure or pneumatic pressure) from the pump 16c, and the piston rod 13 of the cylinder 12 presses the pressing member 15 toward the ball 5 via the connector 14, thereby The ball 5 is pressure-bonded to the ball receiving portion 6 of the holder portion 3, and the ball 5 is fixed to the holder portion 3 side so as not to rotate. In addition, since the pressing force against the pressing member 15 is naturally released by switching the fluid pressure flowing from the pump 16c to the cylinder 12 through the supply / dischargers 16a and 16b, the pressure-bonding action of the ball 5 against the ball receiving portion 6 is achieved. Is released, and the ball 5 can freely rotate with respect to the holder portion 3.

Further, as shown in FIGS. 3 and 5, in the present invention, since the plurality of grooves 17 are provided in the circumferential direction in parallel to each other on the outer peripheral surface of the ball 5, the ball 5 is pressed by the pressing member 15. Is pressed against the ball receiving portion 6 to press the spherical portion 5a between the grooves 17 of the ball 5 to the ball receiving portion 6, and the groove 17 bites against the concave curved surface of the ball receiving portion 6, The ball 5 is securely fixed to the ball receiving portion 6 by the biting action.

  As shown in FIGS. 3 and 4, the clamp 8 connected to the stud 4 of the ball 5 includes a fixing member 19 fitted to the tip of the stud 4 and fixed by a pin 18, and two guides on the left and right sides. A movable member 21 that can move in parallel with respect to the fixed member 19 is provided via rods 20 and 20. The guide rod 20 protrudes vertically downward from both longitudinal ends of the movable member 21 and is inserted and supported through a guide hole (not shown) of the fixed member 19. The guide rod 20 has the movable member 21 fixed to the fixed member 19. Coil springs 22 are fitted to 19 so as to facilitate the insertion of the hot-wire work tool while being held at an appropriate interval. Further, sandwiching portions 19a and 21a having a substantially V-shaped cross section for sandwiching a stick S as a live-line work tool are formed on the opposing surfaces of the fixed member 19 and the movable member 21. Further, a screw shaft 23 is erected at the longitudinal center portion of the fixed member 19, the screw shaft 23 is inserted into the hole 21 b of the movable member 21, and a tightening member 24 is screwed to the tip portion thereof. . A knob 25 for rotating operation is attached to the tightening member 24.

  In using the clamp 8, the stick S is inserted between the holding portions 19 a and 21 a of the fixed member 19 and the movable member 21, and the clamping member 24 screwed to the screw shaft 23 is used as the biasing force of the coil spring 22. By rotating in the tightening direction against this, the movable member 21 approaches the fixed member 19 side, and the sticks S of various diameters can be sandwiched and fixed between the sandwiching portions 19a and 21a.

  As shown schematically in FIG. 2, the mounting portion 2 of the apparatus main body 1 includes a U-shaped frame main body 26 including a pair of front and rear leg portions 26a, 26b and a connecting portion 26c connecting both the leg portions 26a, 26a, and the U-shaped frame main body. 26 is constituted by a screw shaft 27 screwed to one leg portion 26a side and extending to the other leg portion 26b side, and a disk-like pressing member 28 attached to the tip of the screw shaft 27. A base 29 is fixed to the upper end of the frame main body 26, and a cylindrical connecting member 30 is erected on the base 29. A disk-like support for the holder portion 3 is provided on the upper end of the cylindrical connecting member 30. The attachment portion 11a of the member 11 is fitted and fixed with a screw d (see FIG. 3). A lever 27 a is provided at the base end of the screw shaft 27.

  Therefore, in order to attach the attachment portion 2 to the bucket B of the aerial work vehicle, the U-shaped frame main body 26 is straddled over the upper end portion of the side wall of the bucket B as shown in FIG. And the side wall portion of the bucket B may be crimped by the pressing member 28 at the tip of the screw shaft 27 and the leg portion 26b of the U-shaped frame body 26.

  When using the fixing device A having the above-described configuration to perform a live-line operation of the overhead wire C as shown in FIG. Is fixed to the required part of the bucket B of the aerial work vehicle K. At this time, the pressure fixing means 7 is set at a lock release position where the pressure bonding action of the ball 5 against the ball receiving portion 6 is released by the non-operation of the fluid pressure cylinder 12, and the clamp 8 attached to the stud 4 is moved to the ball 5. It can be freely swung in any direction around the center.

  Then, the operator M holds the stick S with the holder E attached to the tip, and the holder E holds the required part of the peeling portion, while appropriately holding the clamp 8 side of the fixing device 1 around the ball 5. The base end of the stick S is clamped and fixed to the clamp 8 by swinging. At this time, the clamp 8 side is swung according to the direction of the tip of the stick S, and the stick S is appropriately moved in the length direction according to the holding position of the holder E, so that the stick S assumes a desired posture. In this state, the base end portion may be clamped and fixed by the clamp 8. Thereafter, the stick S is attached and fixed to the bucket B as shown in FIG. 1 by operating the fluid pressure cylinder 12 of the crimping fixing means 7 and fixing the ball 5 to the holder portion 3 so as not to rotate. The apparatus main body 1 is fixed in a desired posture.

  Thus, after fixing the stick S holding the required part of the peeling portion to the bucket B by the fixing device A, the operator M holds another stick S ′ with the peeling tool F attached to the tip, and this stick S The covering portion of the overhead wire C is peeled off while being remotely operated with ′.

  As described above, according to the fixing device A of the present invention, the stick S that holds the required portion of the peeling portion is appropriately adjusted in the three-dimensional direction at the predetermined portion of the bucket B so that the overhead line C does not move. Since it can be fixed in a desired posture necessary for the work, the worker M can carry out the peeling work of the covering portion while remotely operating by holding another stick S ′ alone. In this case, if necessary, a plurality of sticks S can be used to fix them to a required position of the bucket B. In particular, according to the fixing device A, the ball 5 can be locked and released by simply operating the fluid pressure cylinder 12, so that the fixing or removing operation of the live-line work tool is easy and easy. It becomes.

  In this embodiment, only the stick S is illustrated as the live-line work tool to be fixed to the fixing device A, but tools other than Yatsuko and other sticks S can also be fixed. The apparatus main body 1 is not limited to the bucket B of the aerial work vehicle K, and can be attached and fixed to a predetermined work location.

  FIG. 6 shows a crimping fixing means 47 according to another embodiment of the present invention. The crimping fixing means 47 presses the pressing member 15 against the ball 5 by the eccentric cam 44, and the ball 5 is brought into contact with the ball receiving portion 6. An eccentric cam type crimping fixing means adapted to crimp the rotary shaft 45 on the outer cylinder 9 of the holder portion 3 by bearing members e and e, and an eccentric cam 44 is provided at the center of the rotary shaft 45. In addition, a rotation operation lever 46 is connected to one end of the rotation shaft 45, and the rotation shaft 45 is rotated by the lever 46 so that the pressing member 15 is pressed against the ball 5 by the eccentric rotation of the cam 44. Yes.

  Moreover, the crimping | fixing fixing means 57 shown in FIG. 7 shows the crimping | fixing fixing means by utilization of a wedge. In this figure, 48 is a fixed cone formed by forming a conical convex portion 48a having a gentle slope on the upper surface side of the disc body, and 49 is a conical convex portion of the fixed cone 48 on the lower surface side of the disc body. This is a movable cone formed by forming a conical recess 49a fitted to 48a and forming a conical recess 49b similar to the conical recess 49a on the upper surface side. Reference numeral 50 denotes a pressing member similar to the pressing member 15, which is formed with a conical convex portion 50 a fitted on the conical concave portion 49 b of the movable cone 49 on the lower surface side and pressed against the ball 5. Reference numeral 51 denotes an operation lever that rotates the screw shaft 52 screwed into the outer cylinder 9 of the holder portion 3, and the tip of the screw shaft 52 is brought into contact with the outer peripheral surface portion of the movable cone 49.

  Accordingly, as shown in FIG. 7, the fixed cone 48 is fixed on the support member 11 of the holder portion 3, and the lower surface side conical concave portion 49 a of the movable cone 49 is fitted into the conical convex portion 48 a of the fixed cone 48, and this movable When the screw shaft 52 is rotated in the advancing direction by the operating lever 51 with the lower surface side conical convex portion 50a of the pressing member 50 fitted in the upper surface side conical concave portion 49b of the cone 49, the screw shaft 52 is screwed. As a result, the movable cone 49 is pushed out, and the pressing member 50 is pushed up by the wedge action of the movable cone 49 at the time of pushing, so that the ball 5 is fixed to the ball receiver 6 by pressure.

It is a perspective view which shows the use condition of the fixing device of the tool for hot wire work which concerns on this invention. It is an expansion perspective view of the fixing device. It is a principal part expanded side surface sectional view of the fixing device. It is a partial front view of the fixing device seen from the direction of arrow X in FIG. It is a partially expanded front view of a ball. It is sectional drawing which shows an eccentric cam type crimping | fixing fixing means. It is sectional drawing which shows a wedge type crimping | fixing fixing means.

S, S 'stick (tool for live work)
A Fixing device for hot wire work tool 1 Device body 4 Stud 5 Ball with stud 5a Spherical surface portion 6 Ball receiving portion 7 Fluid pressure cylinder type crimping fixing means 8 Clamp 47 Eccentric cam type crimping fixing means 57 Wedge type crimping Fixing means

Claims (3)

A ball 5 which is a ball 5 with a stud 4 and a plurality of grooves 17 are provided on the outer peripheral surface of the ball 5 in parallel to each other in the circumferential direction; A ball receiving portion 6 for receiving the ball 5 and a pressure fixing means 7 for fixing the ball 5 to the ball receiving portion 6 so as to be unrotatable are provided, and the hot work tool S is removed from the stud 4. A clamp 8 that can be fixed is provided, and the pressure fixing means 7 includes a fluid pressure cylinder 12 that is concentrically disposed on the support member 11 of the apparatus main body 1, and a pressing member 15 that contacts the ball 5. becomes a cylinder type crimped means adapted to crimp the pressing member 15 by the operation of the fluid pressure cylinder 12 to the ball receiving part 6 the spherical portion 5a between the grooves 17 of the ball 5 is pressed against the ball 5 active Fixation device for a working tool. A ball 5 which is a ball 5 with a stud 4 and a plurality of grooves 17 are provided on the outer peripheral surface of the ball 5 in parallel to each other in the circumferential direction; A ball receiving portion 6 for receiving the ball 5 and a pressure fixing means 47 for fixing the ball 5 to the ball receiving portion 6 so as not to rotate are provided, and the hot work tool S is removed from the stud 4. A clamp 8 that can be fixed is provided, and the crimping fixing means 47 includes a rotary shaft 45 that is pivotally mounted on the holder portion 3 of the apparatus main body 1, an eccentric cam 44 provided on the rotary shaft 45, and a rotary shaft 45. The rotating operation lever 46 is provided at one end and a pressing member 15 that comes into contact with the ball 5. The rotating shaft 45 is rotated by the rotating device lever 46, and the pressing member 15 is rotated by the eccentric rotation of the eccentric cam 44. baud 5 securing device live-line working tool is eccentric cam crimp fixing means adapted to crimp the spherical portion 5a between the grooves 17 of the ball 5 in the ball receiving part 6 against the. The apparatus main body 1 which is fixedly attached to a predetermined work position, a ball 5 having a plurality of grooves 17 on the outer circumferential surface of the ball 5 a ball 5 of the stud 4 is formed by Jo設in the circumferential direction parallel to each other, A ball receiving portion 6 for receiving the ball 5 and a pressure fixing means 57 for fixing the ball 5 to the ball receiving portion 6 so as not to rotate are provided, and the hot work tool S is removed from the stud 4. A clamp 8 that can be fixed is provided, and the pressure-fixing means 57 is fixed to the fixed cone 48 fixed on the support member 11 of the apparatus main body 1, and is opposed to the fixed cone 48 and comes into contact with the ball 5. The pressing member 50, the movable cone 49 that is wedge-fitted between the fixed cone 48 and the pressing member 50, and the holder 3 are screwed to abut against the movable cone 49 and push the movable cone 49 in the wedge fitting direction. A screw shaft 52 that rotates, and an operation lever 51 that rotates the screw shaft 52. The screw shaft 52 is rotated by the operation lever 51 and the movable cone 49 is pushed out in the wedge fitting direction, whereby the wedge of the movable cone 49 is pushed. A fixing device for a live-line work tool, which is a wedge-type crimping fixing means that presses the pressing member 50 against the ball 5 by the action to crimp the spherical portion 5a between the grooves 17 of the ball 5 to the ball receiving portion 6.

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