JP4082716B2 - Remote control tool - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention performs the operation of fastening or unfastening bolts and nuts at remote locations by remote control, such as bolts and nuts for fixing structures arranged on utility poles to form an overhead distribution line. It is related with the remote control tool for.
[0002]
[Prior art]
Supports such as utility poles are required to form an overhead electric line, and structures such as insulators, suspension clamps, and pole transformers are placed on the support, and many of them are fastened with bolts and nuts. The overhead electric wire is held by means or fixed to a support. The work of tightening or removing bolts and nuts is involved in the construction and maintenance inspection of overhead electric wires and the above structures. During this work, if power transmission in the work section is stopped to ensure safety, the customer will be damaged by the power outage. Therefore, a remote control tool that can secure the safety of the operator and can fasten or release the bolts and nuts in a live line state is used.
[0003]
A remote control tool is known in which a hydraulic wrench is fixed to the tip of a stick-like support such as a stick. However, the weight of the hydraulic wrench is so large that it lacks operability, requires a hydraulic generator, and is expensive. There was a problem such as. Since construction and maintenance inspection of an overhead electric line is an operation that involves movement outdoors, it is desired to be light and have good operability and not to require a power source such as hydraulic pressure or electric power.
[0004]
As an example of a remote control tool for manually tightening bolts and nuts without requiring a power source, a two-clamping nut tool is disclosed in Japanese Utility Model Publication No. 3-17531. As shown in FIG. 7, this tool has a tool body 101 in which two nut tightening members 105 and 106 with a clutch mechanism are mounted in parallel at a predetermined interval, and a vertical axis 108 provided with a universal joint 103 at a central position. A rotary stick (not shown) is connected via a built-in stick joint 102. When the rotation mechanism provided on the rotary stick is rotated, the rotation is transmitted to the rotation transmission mechanism 104 through the vertical axis 108 and the universal joint 103, and the nut tightening members 105 and 106 can be rotated simultaneously by the rotation transmission mechanism 104. The bolts or nuts fitted in the sockets provided at the lower ends of the nut tightening members 105 and 106 can be tightened.
[0005]
The stick joint 102 is pivotally attached to the tool body 101 so as to be pivotable by a pivot 109, and the vertical axis 108 serving as a rotation axis is provided with a universal joint 103. The angle with respect to the tool body 101 can be changed. The angle of the stick joint 102 with respect to the tool body 101 can be fixed by tightening the thumbscrew 107. By adjusting the angle of the stick joint 102, the rotary stick can be changed to an angle at which it is easy to work.
[0006]
[Problems to be solved by the invention]
As can be seen from the name, the remote control tool according to the above prior art is limited to the tightening work of the high-voltage main line bolt and nut to the round discharge clamp arranged in the high-voltage overhead distribution line. The work is limited to tightening bolts and nuts in the upward direction from below. There is work to fasten or unfasten bolts and nuts in a dangerous place or a remote place without being limited to such uses, and be limited to the type and size of bolts and nuts, or the work direction. Therefore, a highly versatile remote control tool that can be remotely operated is desired.
[0007]
In addition, transmission of the rotational driving force via the universal joint increases the driving torque as the crossing angle of the rotating shafts increases. Therefore, there is a problem that workability decreases when the angle is changed. In addition, the maximum angle that can be changed by the universal joint is about 10 degrees at most, and it is necessary to enable a large change in angle in order to obtain a good workability angle. Further, since the changed angle is configured to be fixed by a screw, there is a problem in looseness and strength of the screw, and it is necessary to set the angle and fix it with the screw.
[0008]
In addition, the remote control tool is used mainly for fastening or unfastening bolts and nuts that fix the structure on the power pole. It is an important factor for ensuring work safety to have electrical insulation that does not occur.
[0009]
An object of the present invention is to provide a highly versatile remote control tool capable of fastening or unfastening bolts and nuts in a dangerous place or a place out of reach.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, a remote control tool according to the present invention includes an operating rod formed in a cylindrical shape, a rotary drive shaft that is rotatably supported in the operating rod, and an operating rod that operates on the rotary drive shaft. A rotational drive means for rotationally driving from the proximal side of the control unit, a support portion detachably provided on the distal end side of the operating rod, a rotating portion whose one end side is pivotally supported by a support shaft fixed to the support portion, A bevel gear-shaped rotation transmission gear that is rotatably disposed concentrically with the support shaft, a bevel gear-shaped drive gear that is engaged with the rotation transmission gear by transmitting the rotation of the rotation drive shaft, and the rotation A bevel gear-like driven gear that is pivotally supported by the portion and meshed with the rotation transmission gear, and a tool rotation shaft that is mounted on the other end of the rotating portion and that is parallel to the axis of the driven gear. a tool mounting portion having a rotation transmission means for transmitting the rotation of the driven gear to the tool rotation axis Rotation driving means comprising a worm wheel fixed to the rotation portion concentrically with the support shaft and a worm meshing with the worm wheel, and rotation for arbitrarily changing the angle of the rotation portion with respect to the support portion by rotating the worm. And an operation knob.
[0011]
According to the above configuration, a state in which the tool attachment portion is attached to the rod-shaped tip portion so that the angle can be changed is obtained, and the tool attachment portion can be rotated by rotating the rotation driving means at hand. When a rotary tool is attached to the bolt, the bolt and nut in a remote place or a dangerous place can be fastened or removed from the hand. Since the worm gear is used to change the angle of the tool mounting part, the set angle is maintained just by rotating the rotary operation knob, and the rotational driving force is applied to the tool mounting part through the rotation transmission gear arranged coaxially with the worm wheel. Therefore, even if the angle changes, the rotational driving force from the hand does not change. Furthermore, since it is configured to be detachable between the operation rod and the support portion, the tool operation portion can be removed and carried from the operation rod, the length is reduced, and the weight is placed at the end of the rod-shaped operation rod. Therefore, portability can be improved.
[0012]
In addition, by configuring the tool mounting portion so that it can be detachably attached to the rotating portion and changeable in the mounting direction, there is an angle range that can be fitted to the bolt and nut by the tool in accordance with the angle change by the rotating portion. It can be expanded and the workable range can be expanded. In addition, the tool mounting portion is configured to be able to attach and detach any rotary tool having a different shape and dimension, so that it is not limited to the types of bolts and nuts to be worked, and versatility can be improved. .
[0013]
In addition, at least the operating rod and the support portion, the rotating portion, and the outer surface of the rotary tool are formed of an insulator, so that short-circuiting or electric shock may occur when performing work on the overhead electric wire that is the main work purpose of the remote operation tool. Risk can be suppressed. Furthermore, in addition to the formation of the insulator, by providing an insulating portion that interrupts the connection of the metal body with the insulator between the support portion and the operation rod, the metal body such as the rotating shaft and the gear is connected and at hand. The formation of the current path is blocked by the insulating portion, and an electric shock accident can be prevented when the bolts and nuts on the utility pole are the work targets.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.
[0015]
Fig.1 (a) shows the whole structure of the remote control tool 1 which concerns on this embodiment, and the remote control tool 1 has the hand operation part 2 and the tool operation part 3 with which this is mounted | worn detachably. It is prepared for. The hand operating unit 2 is provided with a rotary driving handle (rotating driving means) 21, a grip 22, a rain drainer 23, and a safety margin collar 24 on an operating rod 20 formed in a cylindrical shape by combining FRP and the like. A connecting portion 25 for connecting the tool operating portion 3 is provided. A rotary drive shaft (not shown) having one end connected to the connecting portion 25 is provided in the axial direction of the operation rod 20, and the rotary drive shaft 21 is rotated by rotating the rotary drive handle 21. be able to. The tool operation unit 3 mounted on the distal end side of the hand operation unit 2 will be described below with reference to FIGS.
[0016]
2 and 3 show the configuration of the tool operation unit 3, and the tool operation unit 3 is mounted on the distal end side of the hand operation unit 2 by inserting the connecting unit 25 into the mounting unit 4. The tool operating unit 3 is extended from the mounting unit 4 and has an insulating unit 5 attached thereto. A support unit 6 is fixed on the insulating unit 5, and a rotating unit 7 is provided so as to be rotatable with respect to the supporting unit 6. The tool attaching portion 8 is detachably attached to the rotating portion 7 at one end side.
[0017]
The mounting portion 4 includes a fitting cylinder 12 provided with a hollow portion that accommodates the connecting portion 25 at a lower portion, and a first drive shaft 11 that is pivotally supported at the center thereof. Is pivotally supported in a state protruding vertically from the fitting cylinder 12. When the connecting portion 25 is inserted into the mounting portion 4, the connecting portion 25 is fitted and held in the fitting cylinder 12, and the lower end of the first drive shaft 11 is connected to the rotation drive shaft.
[0018]
The insulating portion 5 is formed of a cylinder made of insulating resin, and the fitting cylinder 12 is fitted and fixed to the lower end of an outer cylinder 13, and a shaft support cylinder 19 that supports the second drive shaft 14 is supported on the upper end. The first drive shaft 11 and the second drive shaft 14 that are inserted and fixed and entered into the outer cylinder 13 from above and below are joined by an insulating cylinder 15 formed of FRP, and the first drive shaft 11 and the first drive shaft 11 are connected to each other. The two drive shafts 14 are connected in an electrically insulated state. A support portion 6 is fixed to the shaft support cylinder 19 above the insulating portion 5.
[0019]
4 shows the support portion 6 and the rotation portion 7 in a direction orthogonal to the cross-sectional direction shown in FIG. 3. The support portion 6 has a support body 17 fixed in the frame of the insulating cover 16, and the support body 17. The shaft support cylinder 19 is fixed to the front end of the second drive shaft 14 that has advanced into the support 17, and a drive bevel gear (drive gear) 30 is fixed to the support 17. Is fixed. The rotation unit 7 is attached to the support 17 so as to be rotatable with the rotation support shaft 18 as a rotation axis.
[0020]
The rotating unit 7 includes a worm wheel 33 fixed to a rotating support frame 28 that supports an insulating casing 35 that is an exterior body thereof, and a rotation transmission bevel gear 31 that is fitted into the support shaft 18 to transmit rotation. The driving bevel gear 30 and the driven bevel gear 32 are meshed with the bevel gear 31, and the worm 34 pivotally supported by the support body 17 is meshed with the worm wheel 33. A worm gear (rotation drive means) is formed by the worm wheel 33 and the worm 34, and the worm wheel 33 is rotated by rotating the worm 34 by the rotation operation knob 29, and the worm wheel 33 is fixed. The rotation support frame 28 and the insulating housing 35 are rotated. Even when the insulating casing 35 is rotated, the driven bevel gear 32 rotates while meshing with the rotation transmitting bevel gear 31, so that the rotating portion 7 can rotate with respect to the support portion 6 and rotate. A constant rotational driving force is also transmitted by a change in the moving angle. The pivotable range of the pivot unit 7 is structurally pivotable on both sides until the driven bevel gear 32 moves on the rotation transmitting bevel gear 31 to a position close to the drive bevel gear 30, but the tool mounting Since the direction in which the portion 8 approaches the insulating portion 5 is not workable, the stopper 27 attached to one end of the insulating housing 35 comes into contact with the support 17 when the tool mounting portion 8 is rotated in the upward direction. The tool mounting portion 8 can be changed in angle by about 90 degrees from the horizontal state.
[0021]
In the insulating casing 35, the rotation of the driven bevel gear 32 pivotally supported on one end side thereof is changed from the first spur gear 36 to the second spur gear 37, the third spur gear 38, and the fourth spur gear 38. A gear group (rotation transmission means) is disposed so as to be transmitted, and the tool mounting portion 8 is disposed in a central cavity having a hexagonal cross section at the center of the gear rotation shaft 40 to which the fourth spur gear 39 is fixed. Is detachably mounted.
[0022]
The tool mounting portion 8 has a screw shaft 41 fixed at one end thereof, and is inserted into the central cavity of the gear rotation shaft 40 at the other end of the tool rotation shaft 43 in which a hexagonal fitting insertion portion 42 is formed. A socket holder 44 is provided. The tool attachment portion 8 can be fixed to the gear rotation shaft 40 by inserting the fitting insertion portion 42 into the gear rotation shaft 40 and screwing and tightening the attachment knob 46 into the screw shaft 41. Further, as shown in FIG. 5, the tool attachment portion 8 can insert the insertion portion 42 into the rotating shaft 40 in the reverse direction, and screw the attachment knob 46 into the screw shaft 41 to insulate the housing. The other end of the body 35 is fixed upward.
[0023]
The socket holder 44 is configured to replace and replace various sockets corresponding to the shape and dimensions of the bolts and nuts to be worked. For example, the nut socket 50 shown in FIG. 6 is provided with a fitting portion 51 formed with a concave portion having a shape and dimension that can be fitted on the outer surface of the target nut at the tip, and the tool rotating shaft 43 at the rear end. An engaging portion 52 having a common shape is provided to engage with a hexagonal recess formed at the tip. When such a socket 50 is press-fitted into the socket holder 44, the engaging portion 52 engages with the hexagonal concave portion of the tool rotation shaft 43 exposed on the bottom surface of the concave portion of the socket holder 44, and is formed on the circumference on the rear end side. A holding ball 47 that is elastically urged to the inner peripheral surface of the recess is fitted into the peripheral groove 53, and the socket 50 is held by the socket holder 44 and is driven to rotate by the rotation of the tool rotating shaft 43.
[0024]
The method of use and the operation of each component will be described below, taking as an example the case where the bolts and nuts for fixing the structure arranged on the utility pole are fastened or unfastened by the remote control tool 1 configured as described above.
[0025]
The mounting direction of the tool mounting portion 8 with respect to the rotating portion 7 is determined according to the direction of the bolt or nut to be worked, and the tool mounting portion 8 is mounted on the rotating portion 7. As shown in FIG. 1 (a), when the tool mounting portion 8 is mounted so as to face downward with respect to the rotating portion 7, it is possible to work on bolts and nuts that are inclined downward and further horizontally. . As shown in FIG. 1 (b), when the tool mounting portion 8 is mounted on the rotating portion 7 so as to face upward, it is possible to work on bolts and nuts that are inclined upward from the upper side and further in the horizontal direction. .
[0026]
In this way, the tightening or unfastening operation can be performed without being limited to the direction of the bolt and nut by changing the mounting direction of the tool mounting portion 8, so that the socket holder 44 of the tool mounting portion 8 has a work target. Attach the socket 50 corresponding to the shape dimension of the bolt or nut, and fit the socket 50 to the bolt or nut at the work target position on the utility pole so that the angle is the easiest to work for fastening or unfastening. The rotation operation knob 29 changes the angle of the rotation unit 7 with respect to the operation rod 2.
[0027]
When the rotation operation knob 29 is rotated, the worm wheel 33 is rotated by the worm 34, and the insulating housing 35 to which the worm wheel 33 is fixed rotates about the rotation support shaft 18 as a rotation axis. The angle adjustment knob 29 is rotated until Since the worm gear can rotate the worm wheel 33 from the worm 34 and cannot rotate in the opposite direction, the set angle does not change even if pressure is applied to the rotating portion 7 and the tool mounting portion 8. In addition, fixing means such as screw fixing is not required to maintain the set angle, and the angle can be easily set only by rotating the angle adjusting knob 29. When this angle setting is performed, the driven bevel gear 32 that transmits the rotational driving force to the tool mounting portion 8 rotates while meshing with the rotation transmitting bevel gear 31. There is no change in the transmission torque of the rotational driving force to the tool mounting portion 8.
[0028]
The preparatory work can be arbitrarily performed even after the tool operating unit 3 is mounted on the hand operating unit 2 or before mounting. The hand operating part 2 to which the tool operating part 3 is attached holds the grip 22 with one hand as the main support and the hand 26 with the other hand, so that the tool operating part 3 is lifted and supported in a stable state. Therefore, the socket 50 attached to the tool attachment portion 8 of the tool operation portion 3 is fitted to the bolt or nut to be worked. When the socket 50 is fitted to the object, the state where the center of gravity is biased toward the distal end side of the long operation rod 20 and the state of instability is eased, so that the hand holding the flange 26 can be released and released. The hand can be replaced with the rotary drive handle 21. In order to obtain a more stable state, if the end of the heel 26 is applied to the body and supported in the manner of supporting a large fishing rod, fine adjustment is possible with a hand having the grip 22 with the end of the heel 26 as a fulcrum. It becomes.
[0029]
When the rotary drive handle 21 is rotated in a state where the operation rod 20 is supported, the rotation drive shaft in the operation rod 20 rotates, and the rotational drive force is transmitted to the tool operation unit 3 connected by the connecting unit 25. The rotational driving force rotates the driving bevel gear 30 through the first driving shaft 11, the insulating cylinder 15, and the second driving shaft 14, so that the rotation transmitting bevel gear 31, the driven bevel gear 32, the first spur gear 36 to the fourth spur gear 36. A rotational driving force is transmitted to the tool rotation shaft 43 through the gear 39, and the socket 50 loaded in the tool mounting portion 8 can be rotationally driven. The bolt or nut fitted to the socket 50 can be rotated in the tightening direction or the removal direction depending on the rotation direction of the rotary drive handle 21.
[0030]
A portion to which a high voltage is applied exists on the utility pole, and a high voltage is applied to the bolt and nut attached to a clamp or the like that supports the overhead electric wire. Therefore, it is necessary to prevent a short circuit from being caused by an operation or an electric shock of an operator.
[0031]
In the hand operation unit 2, the operation rod 20 is made of an insulating resin, and the rain drainer cuts off the current path caused by the water flowing on the surface of the operation rod 20 in the rain. 23 and a safety limit flange 24 are provided, and the safety limit flange 24 prevents the hand holding the grip 22 from moving upward.
[0032]
In the tool operation unit 3, the support unit 6 and the rotation unit 7 are covered with resin as an insulator, and the tool attachment unit 8 is also provided with an insulating coating 45 on the surface excluding the socket holder 44. In addition, the insulating portion 5 has its outer cylinder 13 formed of an insulating resin, and the insulating cylinder 15 blocks a current path through a metal gear, a rotating shaft, and the like.
[0033]
As described above, the remote control tool 1 according to the present embodiment is suitable for work on bolts and nuts on a power pole, but is not limited to this, and work on bolts and nuts in a remote place or a dangerous place. It can also be applied to.
[0034]
【The invention's effect】
As described above, according to the present invention, it is possible to perform a work of fastening or removing bolts and nuts at a remote place or a place with danger, and in particular, bolts and nuts for fixing a structure on a power pole. It is possible to perform the work of fastening or detaching by operating from the ground while ensuring safety. In addition, since it is lightweight and does not require any special power, it is excellent in portability and can be easily carried for maintenance inspection of overhead electric lines. In addition, it is possible to perform work by remote control without being limited to the direction of bolts and nuts. Therefore, it can be used for the work of fastening or removing bolts and nuts not only on utility poles but also in remote places and places with danger. Can be used.
[Brief description of the drawings]
FIG. 1A is a front view showing an overall configuration of a remote control tool according to an embodiment, and FIG. 1B is a partial front view of a state in which a tool attachment portion is attached in the reverse direction.
FIG. 2 is a perspective view illustrating a configuration of a tool operation unit.
FIG. 3 is a cross-sectional view showing a configuration of a tool operation unit.
FIG. 4 is a partial cross-sectional view showing a turning structure of a turning part with respect to a support part.
FIG. 5 is a cross-sectional view showing a state in which a tool attachment portion is attached upward.
FIG. 6 is a side view showing a configuration of a nut socket which is an example of a tool.
FIG. 7 is a configuration diagram showing a configuration of a remote control tool according to a conventional technique.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Remote operation tool 2 Hand operation part 3 Tool operation part 4 Mounting part 5 Insulation part 6 Support part 7 Rotation part 8 Tool attachment part 15 Insulation cylinder 16 Insulation cover 17 Support body 18 Rotation support shaft 20 Operation rod 21 Rotation drive handle 29 rotational operation knob 30 drive bevel gear 31 rotation transmission bevel gear 32 driven bevel gear 33 worm wheel 34 worm 35 insulating housing 36 first spur gear 37 second spur gear 38 third spur gear 39 fourth spur gear 43 tool Rotating shaft 44 Socket holder 45 Insulation coating 46 Mounting knob

Claims (3)

An operation rod formed in a cylindrical shape, a rotation drive shaft rotatably supported in the operation rod, rotation drive means for rotating the rotation drive shaft from the hand side of the operation rod, and the operation rod A support part detachably provided on the tip side, a rotating part supported on one end side by a support shaft fixed to the support part, and a bevel gear-like shape rotatably disposed concentrically with the support shaft A rotation transmission gear, a bevel gear-shaped drive gear that is engaged with the rotation transmission gear by transmitting the rotation of the rotation drive shaft, and a bevel gear shape that is pivotally supported by the rotating portion and meshes with the rotation transmission gear. A driven gear, a tool mounting portion mounted on the other end side of the rotating portion and having a tool rotation axis having an axis parallel to the axis of the driven gear, and rotation of the driven gear rotating the tool a rotation transmission means for transmitting to the shaft, worm wheel fixed to rotating portion concentrically with the support shaft And a rotation drive means comprising a worm meshing with the worm, and a rotation operation knob for rotating the worm to arbitrarily change an angle of the rotation portion with respect to the support portion. .   The tool attachment portion is configured to be detachably attached to the rotating portion and changeable in the attachment direction, and the tool attachment portion is configured to be exchangeable with an arbitrary rotary tool having a different shape dimension. Remote control tool.   At least the outer surface of the operating rod, the support portion, the rotating portion, and the tool mounting portion is formed of an insulator, and an insulating portion that interrupts the connection of the metal body with the insulator between the support portion and the operating rod. The remote control tool according to claim 1 provided.

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