JP7446676B2 - Overhead line self-propelled machine and overhead line installation method - Google Patents

Description

The present invention relates to an overhead line self-propelled machine and an overhead line installation method.

Conventionally, power distribution lines laid between support structures such as utility poles and steel towers, overhead wires such as overhead ground wires, for example, are set on power distribution lines and run along the power distribution lines, and various Overhead line self-propelled machines are provided for use in applications.

FIG. 2 is a side view of a conventional overhead line self-propelled machine.

In the figure, 11 is a power distribution line laid between two utility poles, and 12 is an overhead line self-propelled machine that runs along the power distribution line 11.

The overhead line self-propelled machine 12 includes a main body frame 14, a pair of running rollers 16 and 18 rotatably disposed on the main body frame 14, a lower roller 20, and a lower roller 20 that is arranged to hang down from the main body frame 14. A frame 22 is provided with a measuring device 24 attached to the lower end of the hanging frame 22, for example, for measuring the distance to a building or the like below the power distribution line 11.

A V-shaped groove (not shown) is formed on the outer periphery of the traveling rollers 16 and 18, and the overhead line self-propelled machine 12 is set on the distribution line 11 so that the distribution line 11 is accommodated in the groove. be done.

A motor (not shown) is disposed within the main body frame 14, and a battery (not shown), a control device, etc. (not shown) for driving the motor are disposed in the hanging frame 22, and by driving the motor, the overhead line A self-propelled machine 12 is made to travel along the power distribution line 11 from one utility pole to the other utility pole.

Note that the lower roller 20 presses the power distribution line 11 against the running rollers 16 and 18 so that the running rollers 16 and 18 do not come off the power distribution line 11 (see, for example, Patent Document 1).

Japanese Patent Application Publication No. 2000-33874

However, since the conventional overhead line self-propelled machine 12 is set on the distribution line 11 installed between utility poles in a state where it is bent due to its own weight, it runs smoothly from one utility pole to the middle part between the utility poles. However, the closer the power distribution line 11 is to the other pole, the greater the inclination of the power distribution line 11, so the running rollers 16 and 18 slip on the power distribution line 11, causing the running speed to become low or to stop.

Therefore, it is possible to increase the size of the motor to increase the driving force, or to increase the diameter of the running rollers 16 and 18 to increase the contact area between the running rollers 16 and 18 and the power distribution line 11. When the motor is made larger or the diameters of the running rollers 16 and 18 are increased, the center of gravity of the overhead line self-propelled machine 12 becomes higher, so that the overhead line self-propelled machine 12 can be stabilized and run along the distribution line 11. I become unable to do so.

The present invention solves the problems of the conventional overhead line self-propelled machine 12 and provides an overhead line self-propelled machine that can reliably and stably travel between support structures along an overhead line. The purpose is to provide an overhead line installation method.

The overhead line self-propelled machine of the present invention is set on an existing overhead line laid between one support structure and the other support structure, is made to travel along the existing overhead line, and is moved between the support structures. A new overhead line is being installed between them.

A casing that covers the outer circumferential surface of the overhead line self-propelled machine, and a plurality of pairs of running rollers rotatably disposed within the casing on the left and right sides of the overhead line self-propelled machine in the running direction of the overhead line self-propelled machine, respectively. first and second drive units, each of which has running rollers that form a structure, and each of the running rollers takes a clamping position in which the existing overhead wire is clamped by surface contact, and a retracted position in which it is retracted from the clamping position; 1 and a biasing member disposed between the drive unit and the second drive unit to bias the first and second drive units toward the sandwiching position.
In addition, each drive unit is arranged to extend in the running direction of the overhead line self-propelled machine, and one drive unit generates driving force, and the rotation of the drive unit is directed forward in the running direction of the overhead line self-propelled machine. a driving force generating section that transmits the transmission toward the overhead wire self-propelled machine; and a traveling roller that is arranged to extend in the traveling direction of the overhead line self-propelled machine and that receives rotation of the driving section from the driving force generating section and rotates each of the traveling rollers. Has a unit.
In the driving force generation section, when an abnormality occurs in the driving force transmission device disposed to transmit the rotation of the drive section forward in the traveling direction of the overhead line self-propelled machine and the overhead line self-propelled machine. A rescue device is disposed adjacent to the rescue device, which interrupts transmission of rotation in the driving force transmission device by an operator's operation.
Further, a connecting portion for connecting the wire member is formed at a predetermined location of the rescue device.

According to the present invention, the overhead line self-propelled machine is set on an existing overhead line laid between one support structure and the other support structure, and is caused to travel along the existing overhead line, New overhead lines are being installed between the support structures.

A casing that covers the outer circumferential surface of the overhead line self-propelled machine, and a plurality of pairs of running rollers rotatably disposed within the casing on the left and right sides of the overhead line self-propelled machine in the running direction of the overhead line self-propelled machine, respectively. first and second drive units, each of which has running rollers that form a structure, and each of the running rollers takes a clamping position in which the existing overhead wire is clamped by surface contact, and a retracted position in which it is retracted from the clamping position; 1 and a biasing member disposed between the drive unit and the second drive unit to bias the first and second drive units toward the sandwiching position.
In addition, each drive unit is arranged to extend in the running direction of the overhead line self-propelled machine, and one drive unit generates driving force, and the rotation of the drive unit is directed forward in the running direction of the overhead line self-propelled machine. a driving force generating section that transmits the transmission toward the overhead wire self-propelled machine; and a traveling roller that is arranged to extend in the traveling direction of the overhead line self-propelled machine and that receives rotation of the driving section from the driving force generating section and rotates each of the traveling rollers. Has a unit.
In the driving force generation section, when an abnormality occurs in the driving force transmission device disposed to transmit the rotation of the drive section forward in the traveling direction of the overhead line self-propelled machine and the overhead line self-propelled machine. A rescue device is disposed adjacent to the rescue device, which interrupts transmission of rotation in the driving force transmission device by an operator's operation.
Further, a connecting portion for connecting the wire member is formed at a predetermined location of the rescue device.

In this case, when the first and second drive units are placed in the sandwiching position, each traveling roller will pinch the existing overhead line by surface contact, so the overhead line self-propelled machine will approach the other support structure and close the existing overhead line. Even if the slope of the overhead line becomes large, the running rollers will not slip on the existing overhead line, and the running speed of the overhead line self-propelled machine will decrease or the overhead line self-propelled machine will not stop. do not have.

In addition, since there is no need to enlarge the drive unit or the diameter of the running roller, the center of gravity of the overhead line self-propelled machine does not become high, and the overhead line self-propelled machine can be reliably and stabilized. It can be run with

FIG. 1 is a first exploded perspective view of an overhead line self-propelled machine in an embodiment of the present invention. FIG. 2 is a side view of a conventional overhead line self-propelled machine. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the overhead line self-propelled machine in embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a front view of the overhead line self-propelled machine in embodiment of this invention. 1 is a plan view of an overhead line self-propelled machine in an embodiment of the present invention. It is a 2nd exploded perspective view of the overhead line self-propelled machine in embodiment of this invention. It is a 3rd exploded perspective view of the overhead line self-propelled machine in embodiment of this invention. It is a 4th exploded perspective view of the overhead line self-propelled machine in embodiment of this invention. It is a side view of the left drive unit in embodiment of this invention. FIG. 3 is a perspective view of a driving force generating section in an embodiment of the present invention. FIG. 2 is an exploded perspective view of a driving force generating section in an embodiment of the present invention. FIG. 2 is an exploded perspective view of a traveling roller unit in an embodiment of the present invention. FIG. 2 is an exploded perspective view of a drop-off prevention rod according to an embodiment of the present invention. FIG. 2 is a control circuit diagram of an overhead line self-propelled machine in an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this case, the overhead line is installed on an existing overhead distribution line laid between utility poles as a support structure, is run along the existing distribution line, and is used to lay a new distribution line between the utility poles. Let me explain about running machine.

FIG. 1 is a first exploded perspective view of an overhead line self-propelled machine according to an embodiment of the present invention, FIG. 3 is a perspective view of an overhead line self-propelled machine according to an embodiment of the present invention, and FIG. 4 is a first exploded perspective view of an overhead line self-propelled machine according to an embodiment of the present invention. Fig. 5 is a plan view of the overhead line self-propelled machine according to the embodiment of the present invention, and Fig. 6 is a second exploded view of the overhead line self-propelled machine according to the embodiment of the present invention. FIG. 7 is a third exploded perspective view of the overhead line self-propelled machine according to the embodiment of the present invention, and FIG. 8 is a fourth exploded perspective view of the overhead line self-propelled machine according to the embodiment of the present invention. . Figure 1 is an exploded perspective view of the overhead line self-propelled machine seen from the front upper right side, Figures 6 and 7 are exploded perspective views of the overhead line self-propelled machine seen from the rear upper right side, and Figure 8 is the overhead line self-propelled machine viewed from the rear upper right side. It is an exploded perspective view of the machine seen from the front upper left.

In the figure, 31 is an existing power distribution line laid between utility poles, 32 is an overhead line self-propelled machine set on the distribution line 31, and Cs is a material made of polycarbonate or the like that covers the outer peripheral surface of the overhead line self-propelled machine 32. The casing is made of resin material. The casing Cs is made of a cylindrical body having a rectangular shape with open front and rear ends in the running direction of the overhead wire self-propelled machine 32, and a top wall WT disposed at the upper end of the casing Cs, A left side wall WL as a first side wall disposed at the left end when facing the running direction of the linear self-propelled machine 32, a right side wall WR as a second side wall disposed at the right end, and a lower end of the casing Cs. The top wall WT includes a bottom wall WB disposed, and a top wall body Wa, and a cover Wb disposed to be swingable and openable/closable with respect to the top wall body Wa.

The top wall WT, left side wall WL, and right side wall WR are integrally formed to form an outer housing portion Hs having an inverted “U” shape. Further, the bottom wall WB is divided into left and right parts in the width direction of the overhead wire self-propelled machine 32, and includes a left bottom plate part Lp as a first bottom plate and a second bottom plate that are arranged to face each other. It consists of a right bottom plate part Rp.

Note that the left side wall WL, right side wall WR, and top wall main body Wa are provided with reinforcing mechanical frames FL, FR, and FT on their inner peripheral surfaces. Each of the mechanical frames FL, FR, and FT is formed by covering a metal plate formed by press working or the like with a resin material.

The housing Cs has a front opening hf formed at the front end and a rear opening hr formed at the rear end, and when the overhead line self-propelled machine 32 is set on the distribution line 31, the distribution line 31 is formed from the front opening hf to the rear opening. The overhead line is extended through the overhead line self-propelled machine 32 for a period of hr.

Further, the front end portion of the housing Cs has a shape narrowed to the front opening hf, as shown in FIG. Therefore, even if the power distribution line 31 is installed in a thicket of trees, the overhead line self-propelled machine 32 can be made to run through the gap between the trees.

In the case Cs, when the overhead line self-propelled machine 32 is set on the distribution line 31, the overhead line self-propelled machine 32 is installed to straddle the distribution line 31, and the overhead line self-propelled machine 32 is placed in the direction in which the distribution line 31 extends. In this embodiment, a pair of guide rollers 34 and 35 are rotatably arranged to face the front opening hf and the rear opening hr, respectively.

Each of the guide rollers 34 and 35 is arranged to be rotatable relative to the outer casing Hs and rotatably relative to the shaft sh1 installed between the left wall WL and the right wall WR. A V-shaped groove m1 is formed on the outer peripheral edge of each guide roller 34, 35, and when the overhead line self-propelled machine 32 is set on the distribution line 31, the distribution line 31 is accommodated in the groove m1. , each guide roller 34, 35 is placed in a state where it straddles the power distribution line 31.

Note that the guide rollers 34 and 35 are formed of a rubber material such as littoril rubber.

Further, the inside of the casing Cs is divided into two by a horizontally extending partition plate 45, and a drive device storage chamber Rm1 as a first chamber is partitioned between the bottom wall WB and the partition plate 45. A control device storage chamber Rm2 as a second chamber is formed between the plate 45 and the top wall WT, and a drive device for causing the overhead line self-propelled machine 32 to travel along the distribution line 31 is provided in the drive device storage chamber Rm1. The device Dr is housed in the control device storage chamber Rm2, which includes a control device 47 for controlling the drive device Dr, a battery 48 for supplying power to the drive device Dr, and a battery 48 attached to the front end of the battery 48, which is connected to an overhead line. An irradiation lamp 49 as an irradiation member that irradiates the front of the running machine 32 is housed.

The overhead line self-propelled machine 32 and a remote control (not shown) are connected wirelessly, and when a worker operates the remote control and performs wireless communication, the drive device Dr is driven, and the overhead line self-propelled machine 32 is driven along the distribution line 31. The self-propelled machine 32 is made to travel.

Further, when the worker operates the remote control, the irradiation lamp 49 is turned on, and the front of the overhead line self-propelled machine 32 is irradiated. Therefore, the worker can not only run the overhead line self-propelled machine 32 while monitoring the status of the power distribution line 31, insulators, etc. in front, but also check the position of the overhead line self-propelled machine 32 from a distance and Accordingly, the empty line self-propelled aircraft 32 can run smoothly.

Furthermore, a camera (not shown) as an imaging device is disposed on the top wall main body Wa, and the camera photographs the state of the area in front of the overhead line self-propelled machine 32, for example, the distribution line 31, the insulator, etc. The front status is displayed on the display. Therefore, the operator can run the overhead line self-propelled machine 32 while looking at the state ahead displayed on the display unit.

Note that the output voltage of the battery 48 is set to 7.2 [V].

The drive device Dr includes a left drive unit Ld as a first drive unit that is disposed on the left side in the traveling direction of the overhead wire self-propelled machine 32 in the housing Cs and supported by the left bottom plate Lp. , and a right drive unit Rd as a second drive unit, which is disposed on the right side in the running direction of the overhead wire self-propelled machine 32 and supported by the right bottom plate portion Rp.

The left drive unit Ld and the right drive unit Rd are both arranged to extend from the rear opening hr side toward the front opening hf side, and are driven by a motor M (FIG. 9) as a drive section, which will be described later. A driving force generating section 51 that generates a driving force, and which is disposed above the driving force generating section 51 and receives the driving force generated by the driving force generating section 51 to rotate running rollers 58 and 59, which will be described later. A running roller unit 52 is provided.

The left drive unit Ld and the right drive unit Rd are arranged to face each other and to be movable in the width direction of the overhead line self-propelled machine 32, and are set at the center side in the width direction of the overhead line self-propelled machine 32. It is set close to the clamping position and the left side wall WL and right side wall WR in the width direction of the overhead wire self-propelled machine 32, and takes a retracted position evacuated from the clamping position.

To this end, in this embodiment, a plurality of two A spring unit Sp serving as a biasing member is disposed, and each spring unit Sp biases the left drive unit Ld and the right drive unit Rd toward the sandwiching position with a predetermined biasing force.

Each spring unit Sp has one end fixed to the mechanical frames FL, FR, and the other end facing the left drive unit Ld and right drive unit Rd. The left drive unit Ld and the right drive unit Rd are provided with a coil spring Sp2 whose other end is fixed to the mechanical frames FL and FR. The coil spring Sp2 is made longer than the core rod Sp1, and is connected between the other end of the core rod Sp1 and the left drive unit Ld and right drive unit Rd with the left drive unit Ld and right drive unit Rd placed in the sandwiching position. With a sufficient compression allowance formed and the left drive unit Ld and right drive unit Rd placed in the retracted position, the other end of the core rod Sp1 is brought into contact with the left drive unit Ld and right drive unit Rd. .

In addition, a handle 55 having an "L" shape is formed to protrude from the left side wall WL and the right side wall WR of the left drive unit Ld and the right drive unit Rd. When the worker holds each handle 55 with both hands and moves it left and right, the gap between the left drive unit Ld and the right drive unit Rd becomes wider, so the overhead line self-propelled machine 32 can be easily set on the distribution line 31. be able to.

Further, in the left drive unit Ld and the right drive unit Rd, a plurality of (in this embodiment, three) running rollers 58 and 59 are respectively disposed facing each other and rotatably. , three running roller pairs Xi (i=1, 2, 3) are formed from the front to the rear in the running direction of the overhead wire self-propelled machine 32. Each running roller 58, 59 has a cylindrical shape and is made of a rubber material such as urethane rubber or chloroprene rubber. It should be noted that all of the components other than the traveling rollers 58 and 59 in the left drive unit Ld and right drive unit Rd are formed of a resin material.

When the left drive unit Ld and right drive unit Rd are placed in the sandwiching position, the power distribution line 31 is held between the running rollers 58 and 59, and when the left drive unit Ld and right drive unit Rd are placed in the retracted position, the left A predetermined gap is formed between the drive unit Ld and the right drive unit Rd and between the traveling rollers 58 and 59.

Since the traveling rollers 58 and 59 have a cylindrical shape, when the left drive unit Ld and the right drive unit Rd are placed in the sandwiching position, they are brought into surface contact with the power distribution line 31, and the distance between the power distribution line 31 and the power distribution line 31 is reduced. To securely hold a power distribution line 31 without forming a gap between the lines.

Further, 60 is a ring which is disposed at a predetermined location of the overhead wire self-propelled aircraft 32 and serves as a connecting part for tying a rope serving as a wiring member (lead wire) (not shown) for wiring (pilot use). The ring 60 is formed to protrude from each driving force generating section 51 of the left drive unit Ld and right drive unit Rd.

A worker ties one end of the rope to the ring 60, ties a new distribution line to the other end of the rope, and runs the overhead line self-propelled machine 32 along the distribution line 31 from one utility pole side to the other utility pole side. As it runs, ropes are strung between utility poles. Subsequently, by removing the rope from the ring 60 and pulling the rope, the worker can construct and lay a new power distribution line between each utility pole.

In the figure, reference numeral 61 denotes a drop-off prevention rod detachably disposed in the outer casing Hs in the vicinity of the front opening hf and rear opening hr. After the worker introduces the power distribution line 31 into the housing Cs and sets the overhead line self-propelled machine 32 to the power distribution line 31, the worker installs each falling prevention rod 61 between the left side wall WL and the right side wall WR. , when fixed to the left side wall WL and the right side wall WR, the lower part of the distribution line 31 in the housing Cs is closed by the falling prevention rod 61, so the distribution line 31 does not come off from the overhead line self-propelled machine 32, and the overhead It is possible to prevent the line self-propelled machine 32 from falling off the power distribution line 31.

Next, the left drive unit Ld and right drive unit Rd will be explained. Note that since the left drive unit Ld and the right drive unit Rd have the same structure, only the left drive unit Ld will be described.

FIG. 9 is a side view of the left drive unit according to the embodiment of the present invention, FIG. 10 is a perspective view of the driving force generating section according to the embodiment of the present invention, and FIG. 11 is a side view of the driving force generating section according to the embodiment of the present invention. Exploded perspective view FIG. 12 is an exploded perspective view of a traveling roller unit in an embodiment of the present invention.

In the figure, Ld is a left drive unit, 51 is a driving force generating section, and 52 is a running roller unit.

The driving force generating section 51 generates rotation by driving the motor M, transmits the generated rotation to the traveling roller unit 52, and causes the driving force transmitting device 62 to cause the traveling roller 58 to travel, and the motor M is stopped. When an abnormality occurs in the overhead wire self-propelled machine 32 (FIG. 1), a rescue device 63 that disconnects the motor M and the running roller 58, and the driving force transmission device 62 and the rescue device 63 are connected to each other. A frame 64 is provided to support the device in the suspended state. The frame 64 includes a base portion 64a, rising portions 64b and 64c formed rising from the front and rear ends of the base portion 64a, and rising portions 64b and 64c rising from the base portion 64a from the front end side to the rear end side of the base portion 64a. It includes auxiliary rising parts 64d, 64e, and 64f that are raised. Of the auxiliary upright parts 64d, 64e, and 64f, the auxiliary upright parts 64d and 64f are fixed to the base part 64a, whereas the auxiliary upright part 64e has the power distribution line 31 extending with respect to the base part 64a. It is disposed so as to be slidable in the direction, extends between the driving force transmission device 62 and the rescue device 63, and is moved in conjunction with the operation of the rescue device 63 by the operator.

The driving force transmission device 62 is disposed adjacent to the motor M, is attached to the rising portion 64c behind the frame 64, and decelerates the rotation generated by driving the motor M. A reduction gear 66, a shaft joint 67 disposed adjacent to the reduction gear 66 and attached to the upright part 64c and the auxiliary upright part 64f within the frame 64, connected to the shaft joint 67 via the shaft sh2, Clutch 69 as a joint member that interrupts transmission of rotation of The bevel gear 74 is meshed with the bevel gear 74 and serves as a second movement direction converting member that converts the direction of rotation transmitted to the bevel gear 73 and transmits the same to the driving force generating section 51, and also as a rotation output member. Note that the bevel gears 73 and 74 constitute a movement direction converting member that converts the rotational direction of the motor M to the rotational direction of the traveling roller 58.

In this embodiment, the overhead line self-propelled machine 32 is made to run on the power distribution line 31 by rotating the running rollers 58 and 59 in opposite directions, so that the motor of the left drive unit Ld M and the motor M of the right drive unit Rd are driven in opposite directions.

The clutch 69 consists of a driven side member 71 in front of the auxiliary rising part 64e, and a driving side member 72 behind the auxiliary rising part 64e, and normally transmits rotation from the driving side member 72 to the driven side member 71. However, when an abnormality occurs in the overhead line self-propelled machine 32, such as when the motor M stops, the driving side member 72 and the driven side member 71 are separated.

The rescue device 63 includes a sleeve 75 formed to protrude rearward from the raised portion 64c, extends through the sleeve 75 and the raised portion 64c, and has a ring 60 at the rear end and a ring 60 at the front end. The rescue rod 78 is equipped with a magnet 76 at the rear end thereof, and an iron plate 79 as an attraction member made of a ferromagnetic material and attached to the upright portion 64b facing the magnet 76. a first connecting rod 81 on which a ring 60 is formed; a first connecting rod connected to the first connecting rod 81 via the auxiliary upright portion 64e and extending within the frame 64; It consists of a second connecting rod 82 having a smaller diameter than 81 and the magnet 76.

Normally, the magnet 76 is attracted to the iron plate 79 by an attractive force, and the rescue rod 78 is fixed to the overhead line self-propelled machine 32 by the attractive force, but if the motor M stops, etc. When an abnormality occurs, by pulling the rescue rod 78 via the rope, the magnet 76 can be separated from the iron plate 79 against the attractive force, and the rescue rod 78 can be moved backward. At this time, the auxiliary upright portion 64e is moved rearward together with the rescue rod 78, and the driving side member 72 of the clutch 69 is separated from the driven side member 71.

As a result, the shafts sh2 and sh3 are separated, so when the worker pulls the rescue rod 78 to recover the overhead wire self-propelled machine 32, the rotor of the stopped motor M is not rotated, and each shaft is separated. The running roller 58 can be easily rotated.

Note that a spring (not shown) as a biasing member is disposed between the auxiliary upright part 64f fixed to the base part 64a and the auxiliary upright part 64e slidably disposed with respect to the base part 64a. The rescue rod 78 is urged forward by the urging force of the spring. Therefore, when the operator stops pulling the rescue bar 78, the auxiliary upright portion 64e is moved forward by the biasing force of the spring. Along with this, the rescue rod 78 is moved forward, the magnet 76 is attracted to the iron plate 79 by the attractive force, and the driving side member 72 of the clutch 69 is connected to the driven side member 71, so that the overhead The line self-propelled machine 32 can be made to travel again.

The running roller unit 52 includes a lower support plate 84 as a first roller support section that covers the frame 64 of the driving force generating section 51 and supports each running roller 58 below; An upper support plate 85 serving as a second roller support part that is disposed at a predetermined distance and supports each traveling roller 58 above, and is rotatably disposed between the lower support plate 84 and the upper support plate 85. roller shafts sh11 to sh13, the traveling rollers 58 attached to the roller shafts sh11 to sh13, a chain 88 as a first transmission member stretched between the roller shafts sh11 and sh12, and a chain 88 between the roller shafts sh12 and sh13. A chain 89 or the like is provided as a second transmission member, which is stretched across.

In addition, sprockets gr1 and gr2 as first rotation transmission members are formed on the roller shafts sh11 and sh12 in order to tension the chain 88 between the roller shafts sh11 and sh12, and the roller shafts sh12 and sh13 are provided with sprockets gr1 and gr2 as first rotational transmission members. In order to tension the chain 89 between the roller shafts sh12 and sh13, sprockets gr3 and gr4 are formed as second rotation transmission members.

Further, tension rollers 91 to 93 for applying tension to the chains 88 and 89 are rotatably disposed upright from the lower support plate 84, and each tension roller 91 to 93 is formed with a sprocket (not shown).

The rotation transmitted from the driving force generating section 51 is transmitted to the roller shaft sh11 to rotate the running roller 58, and is also transmitted to the roller shaft sh12 via the chain 88 to rotate the running roller 58. Furthermore, the traveling roller 58 is rotated by being transmitted to the roller shaft sh13 via the chain 89.

Next, the fall prevention rod 61 will be explained.

FIG. 13 is an exploded perspective view of the drop-off prevention rod according to the embodiment of the present invention.

In the figure, reference numeral 61 indicates a drop-off prevention rod extending between the left side wall WL (FIG. 3) and the right side wall WR, 95 indicates a knob, and bt1 indicates a screw engagement (not shown) formed on the left side wall WL. A fixing portion 97 that is screwed into the hole has one end screwed to the knob 95 and the other end screwed to an insertion portion 96 that is inserted into an insertion hole (not shown) formed in the right side wall WR. 98 is a spacer; 101 and 102 are sleeves that surround the outer periphery of the core rod 97 and are rotatably arranged relative to the core rod 97; and 103 is a washer.

When the worker pulls the rescue rod 78 (FIG. 11) to recover the overhead wire self-propelled machine 32 (FIG. 1), when the power distribution line 31 and the falling prevention rod 61 come into contact, the sleeve will fall against the core rod 97. 101 and 102 are rotated. Therefore, not only can the overhead line self-propelled machine 32 be smoothly recovered, but also it is possible to prevent the overhead line self-propelled machine 32 from being damaged due to interference between the power distribution line 31 and the fall prevention rod 61.

Note that each member constituting the drop-off prevention rod 61 is made of a resin material.

Next, a control device for the overhead line self-propelled machine 32 will be explained.

FIG. 14 is a control circuit diagram of an overhead line self-propelled machine according to an embodiment of the present invention.

In the figure, 32 is an overhead line self-propelled machine, t1 to t4 are 7.2 [V] power terminals connected to the battery 48 (Fig. 1), SW1 is a power switch connected to power terminal t1, and SW2 is a relay. The switch 111 is a power lamp connected to the relay switch SW2, 113 is a DC/DC converter connected to the relay switch SW2 and generates a control voltage of 3.3 [V], and 114 is connected to the relay switch SW2. This is a DC/DC converter that generates control voltages of , 5 [V].

When the power switch SW1 is turned on, the relay switch SW2 is turned on, the power lamp 111 is lit, and a control voltage of 3.3 [V] is generated at the power terminal t5 of the DC/DC converter 113. A control voltage of 5 [V] is generated at the power supply terminal t6 of the DC/DC converter 114.

Further, 116 is a radio receiver, DO1 to DO4 are output terminals of the radio receiver 116, Tr1 to Tr4 are transistors, OR1 and OR2 are OR circuits, NT is a NOT circuit, 118 and 120 are motor drivers, M is a motor, and R1 -R4 are pull-up resistors connected to the power supply terminal t6, and R5-R8 are base resistors connected to the bases of the transistors Tr1-Tr4.

The collector voltage of the transistor Tr1 is input to the input terminal of the OR circuit OR1, the collector voltage of the transistor Tr3 is input to the inverting input terminal of the OR circuit OR1, and the output terminal of the OR circuit OR1 is input to one of the motor drivers 118 and 120. input to the terminal. Further, the collector voltage of the transistor Tr2 is input to the input terminal of the OR circuit OR2, the output voltage of the NOT circuit NT is input to the inverting input terminal of the OR circuit OR2, and the collector voltage of the transistor Tr4 is input to the input terminal of the NOT circuit NT. is input.

Wireless communication is performed between the remote controller and the wireless receiver 116, the motor drivers 118 and 120 are controlled, and the motor M is driven and stopped. Note that the overhead wire self-propelled machine 32 can be moved backward by driving the motor M in the opposite direction as needed.

Next, a method of operating the overhead line self-propelled machine 32 will be explained.

First, the worker ties one end of a wiring rope to each ring 60 of the rescue device 63 (FIG. 10), and ties a new power distribution line to the other end of the rope.

Subsequently, the worker sets the overhead line self-propelled machine 32 to the distribution line 31 on one utility pole side. To do this, the operator holds each handle 55 with both hands, moves each handle 55 left and right against the biasing force of the spring unit Sp, places the left drive unit Ld and right drive unit Rd in the retracted position, and then The power distribution line 31 is introduced into the casing Cs from the bottom wall WB side of the overhead line self-propelled machine 32 through the gap formed between the drive unit Ld and the right drive unit Rd, and placed between the running rollers 58 and 59. Then, each handle 55 is returned to its original position.

As a result, the power distribution line 31 is held between the running rollers 58 and 59, and the overhead line self-propelled machine 32 is set on the power distribution line 31.

Next, the worker installs the fall prevention rod 61 between the left side wall WL and the right side wall WR, and fixes it to the left side wall WL and the right side wall WR.

Next, when the worker turns on the power switch SW1 of the overhead line self-propelled machine 32, the relay switch SW2 is turned on, a control voltage of 3.3 [V] is generated at the power terminal t5, and the power terminal At t6, a control voltage of 5 [V] is generated. When the worker operates the remote controller to drive the motor M, the rotation generated by the motor M is transmitted to the bevel gears 73 and 74 via the shaft coupling 67, clutch 69, etc. 74 converts the direction of movement and transmits it to the driving force generating section 51.

In the driving force generating section 51, the rotation is transmitted to the roller shaft sh11 to rotate the running roller 58, and is also transmitted to the roller shaft sh12 via the chain 88 to rotate the running roller 58. The running roller 58 is rotated by being rotated and further transmitted to the roller shaft sh13 via the chain 89.

Thereby, the overhead line self-propelled machine 32 starts traveling along the power distribution line 31. At this time, the guide rollers 34 and 35 are rotated in tandem at the front and rear sides of the respective running rollers 58 and 59, and guide the overhead line self-propelled machine 32 in the direction in which the power distribution line 31 extends.

In this embodiment, as described above, three running roller pairs Xi are formed by the running rollers 58 and 59, and the running roller pairs Xi are distributed with a sufficiently large force at multiple locations on the power distribution line 31. The electric wire 31 is clamped.

Therefore, since a large propulsion force is generated, even if the distribution line 31 approaches the other utility pole and the inclination of the distribution line 31 becomes large, the overhead line self-propelled machine 32 is stabilized without slowing down or stopping. It is possible to run the vehicle.

In addition, the distribution line 31 has a plurality of locations in the extending direction where the diameter of the connecting portion changes, that is, a faulty part, but when the overhead line self-propelled machine 32 reaches the faulty part, the traveling roller 58 and 59 flexibly hold the power distribution line 31 in surface contact with each other by the biasing force of the spring unit Sp, so that the overhead line self-propelled machine 32 can be reliably run over the obstacle. In addition, even if the running rollers 58 and 59 of one of the running roller pairs Xi are separated due to an obstacle, the power distribution line 31 is held between the other two running roller pairs Xi. The overhead wire self-propelled aircraft 32 can be run without reducing the propulsion force.

In this way, when the overhead line self-propelled machine 32 reaches the other utility pole, the worker operates the remote control to stop the motor M and turns off the power switch SW1 of the overhead line self-propelled machine 32.

Next, the worker removes the wiring rope from each ring 60 of the rescue device 63, pulls the rope, pulls the new distribution line tied to the other end of the rope, and connects the two new distribution lines. Erection and installation between utility poles.

Then, the worker removes the fall prevention rod 61 from the left side wall WL and the right side wall WR, moves each handle 55 of the overhead line self-propelled machine 32 to the left and right, and moves the left drive unit Ld and right drive unit Rd to the retreat position. Then, the running rollers 58 and 59 are separated from the power distribution line 31, and the power distribution line 31 is taken out from the housing Cs through the gap formed between the left drive unit Ld and the right drive unit Rd.

In addition, if an abnormality occurs in the overhead line self-propelled machine 32 while the overhead line self-propelled machine 32 is running, the worker can remove the attraction force by the magnet 76 by pulling the rope on one utility pole side. The rescue rod 78 (FIG. 11) can be moved rearward against this movement to separate the drive side member 72 of the clutch 69 from the driven side member 71. Therefore, when the operator pulls the rope to retrieve the overhead line self-propelled machine 32, the traveling rollers 58 and 59 can be easily rotated.

As described above, in the present embodiment, when the operator places the left drive unit Ld and the right drive unit Rd in the sandwiching position, each traveling roller 58, 59 pinches the power distribution line 31 by surface contact, so that the overhead line Even when the self-propelled machine 32 approaches the other utility pole and the inclination of the distribution line 31 increases, the running rollers 58 and 59 do not slip on the distribution line 31, and the traveling speed of the overhead line self-propelled machine 32 is low. The overhead line self-propelled machine 32 will not stop.

Since there is no need to increase the size of the motor M or the diameter of the traveling rollers 5 and 59, the center of gravity of the overhead line self-propelled machine 32 does not become high, and the overhead line self-propelled machine 32 can be reliably moved. , and can run stably.

Furthermore, in this embodiment, each member (including fixing elements such as screws) constituting the overhead line self-propelled machine 32 is formed of a highly insulating material such as a resin material or a rubber material. The overhead line self-propelled machine 32 constitutes an insulator. Therefore, it is possible to reliably prevent current from flowing through the overhead line self-propelled machine 32.

Furthermore, in this embodiment, the overhead line self-propelled machine is made to run along the distribution line 31, and the camera photographs not only the front of the overhead line self-propelled machine 32, but also the distribution line 31, the overhead ground wire, etc. Visual deterioration diagnosis of the power distribution line 31, overhead ground wire, etc. can be performed. In that case, by using an infrared camera as the camera, infrared thermal image diagnosis of the power distribution line 31, overhead ground wire, etc. can be performed.

Further, in the present embodiment, each spring unit Sp disposed between the housing Cs and the left drive unit Ld and right drive unit Rd directs the left drive unit Ld and the right drive unit Rd to the sandwiching position. However, a spring unit Sp as a biasing member is disposed between the left drive unit Ld and the right drive unit Rd, and the spring unit Sp causes the left drive unit Ld and the right drive unit Rd to be biased. It is also possible to urge the unit Rd toward the clamping position.

Note that the present invention is not limited to the embodiments described above, and various modifications can be made based on the spirit of the present invention, and these are not excluded from the scope of the present invention.

31 Power distribution line 32 Overhead line self-propelled machine 58, 59 Running roller 60 Ring Cs Housing Ld Left drive unit M Motor Rd Right drive unit Sp Spring unit Xi Running roller pair

Claims (19)

An overhead line that is set on an existing overhead line laid between one support structure and the other, runs along the existing overhead line, and lays a new overhead line between the support structures. In line self-propelled machine,
(a) A casing that covers the outer peripheral surface of the overhead wire self-propelled machine ;
(b) In the housing, running rollers are rotatably disposed on the left and right sides of the overhead line self-propelled machine in the running direction, and form a plurality of running roller pairs, each of the running rollers being an existing one. first and second drive units that take a clamping position in which the overhead wire is clamped by surface contact, and a retracted position in which they are evacuated from the clamping position;
(c) a biasing member disposed between the casing and the first and second drive units to bias the first and second drive units toward the sandwiching position;
(d) Each drive unit is arranged to extend in the running direction of the overhead line self-propelled machine, generates driving force by one drive part, and rotates the drive unit in the running direction of the overhead line self-propelled machine. A driving force generating section that transmits forward, and a traveling device that is arranged to extend in the traveling direction of the overhead wire self-propelled machine, and that receives rotation of the driving section from the driving force generating section and rotates each of the traveling rollers. It has a roller unit,
(e) In the driving force generating section, an abnormality has occurred in the driving force transmission device arranged to transmit the rotation of the drive section forward in the traveling direction of the overhead line self-propelled machine and the overhead line self-propelled machine. Sometimes, a rescue device is disposed adjacent to the drive force transmitting device to cut off transmission of rotation in the driving force transmitting device according to an operator's operation,
(f) An overhead wire self-propelled machine, characterized in that a connecting portion for connecting a wire member is formed at a predetermined location of the rescue device . The overhead line self-propelled machine according to claim 1, wherein each of the running rollers forms a plurality of running roller pairs in the running direction of the overhead line self-propelled machine. The overhead wire self-propelled machine according to claim 1 or 2, wherein each of the traveling rollers has a cylindrical shape. A claim in which guide rollers are disposed in front and behind each of the traveling rollers in the running direction of the overhead line self-propelled machine, which are rotated along the existing overhead line to guide the overhead line self-propelled machine. The overhead wire self-propelled machine according to any one of items 1 to 3. The overhead wire self-propelled machine according to claim 4, wherein a V-shaped groove for accommodating an existing overhead wire is formed on the outer peripheral edge of each of the guide rollers. The overhead line self-propelled machine according to claim 5, wherein each of the guide rollers is rotated while straddling an existing overhead line. When the first and second drive units are placed in the retracted position, the existing overhead wire is connected from the bottom wall of the casing to the casing through the gap formed between the first and second drive units. The overhead wire self-propelled machine according to any one of claims 1 to 6, which is introduced into the body. The overhead line self-propelled machine according to any one of claims 1 to 7, wherein the driving force transmission device includes a motion direction converting member that converts the rotation direction of the drive unit to the rotation direction of the traveling roller. The overhead wire self-propelled machine according to any one of claims 1 to 8, wherein the driving force transmission device includes a joint member that interrupts transmission of rotation of the drive section. (a) the rescue device includes a rescue rod having the connection portion at the rear end;
(b) The overhead line self-propelled machine according to claim 9 , wherein the joint member interrupts transmission of rotation of the drive unit when the rescue rod is pulled by the operator. The overhead line self-propelled machine according to claim 10, wherein the rescue rod is fixed to the overhead line self-propelled machine by the attractive force of a magnet. The overhead line self-propelled machine according to claim 11 , wherein the rescue rod is urged forward by a biasing member. The overhead line self-propelled machine according to any one of claims 1 to 12 , further comprising an irradiation member that illuminates the front of the overhead line self-propelled machine. The overhead line self-propelled machine according to any one of claims 1 to 13 , further comprising an imaging device for photographing the front of the overhead line self-propelled machine. It has a drop-off prevention rod that is detachably arranged on the casing, closes the lower part of the casing when attached to the casing, and prevents the overhead line self-propelled machine from falling off from the existing overhead wire. The overhead line self-propelled machine according to any one of claims 1 to 14 . The falling-off prevention rod includes a core rod extending between a left side wall and a right side wall, and a sleeve rotatably installed with respect to the core rod. Overhead line self-propelled aircraft. Any one of claims 1 to 16 , wherein the first and second drive units are formed with handles for placing the first and second drive units in the retracted position against the biasing force of the biasing member. The overhead line self-propelled machine according to item 1. The overhead wire self-propelled machine according to any one of claims 1 to 17 , wherein the insulator is constituted by using a highly insulating material. An overhead line self-propelled machine is set on the existing overhead line laid between one support structure and the other support structure, and the overhead line self-propelled machine runs along the existing overhead line to support the support structure. In the overhead line installation method of laying new overhead lines between structures,
(a) Tie one end of the wiring member for wiring to a predetermined location of the overhead line self-propelled machine,
(b) Hold each handle formed on the first and second drive units disposed on the left and right sides in the traveling direction of the overhead line self-propelled machine, and resist the urging force of the urging member. 1. By moving the second drive unit left and right, each of the running rollers of the plurality of running roller pairs formed between the first and second drive units is separated;
(c) Introducing the existing overhead wire into the casing of the overhead wire self-propelled machine through the gap formed between each drive unit and placing it between the traveling rollers,
(d) return the first and second drive units to their original positions by the biasing force of the biasing member , form a plurality of traveling roller pairs by each traveling roller, and sandwich the existing overhead line in surface contact;
(e) driving one drive unit disposed in each drive unit and rotating the plurality of running rollers to run the overhead line self-propelled machine;
(f) An overhead line laying method characterized by laying a new power distribution line connected to the other end of the wiring member between each support structure.

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