JPH06106004B2 - Airplane for power line work - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is an improvement of a spacecraft for power line work for allowing a worker to travel along a power line during holding and inspection work of a high voltage power line. It is about.

[Conventional technology]

As shown in FIG. 10, this type of conventional aerial vehicle has one roller 4 on both ends of a connecting rod 2 arranged in parallel with the power transmission line 1 and straddling the power transmission line 1 respectively. Hanging bracket 3
Is provided, and a hanging seat 5 for mounting an operator is hung on each of the hanging fittings 3 via a hanging rod 6, and a link 8 is operated below the roller 4 in the hanging fittings 3 by operating a brake operating lever 7. There is known one provided with a brake shoe 9 for crimping the lower peripheral surface of the power transmission line 1 through the above-mentioned method (Act.
No. 84).

[Problems to be solved by the invention]

In the above-mentioned aerial vehicle, while the worker sits on the hanging seat, the power transmission line is moved by rollers while moving, and at the working position, the operation lever is turned by stepping on the stepping rope 10 connected to the brake operation lever. By doing so, the brake shoe 9 is pressed against the power transmission line 1 from the lower side, and the repair work is performed while fixing the machine body.

This airborne machine does not cause any problems when it is used for a power transmission line composed of only wires having no protrusions on the outer surface. However, recently, when a snowfall caused an accident in which a steel tower collapsed due to the weight of snow accumulated on the power transmission line, plastic rings 11 were installed on the power transmission line at intervals of 30 to 90 cm as a measure against snow damage. became.

When the snow damage prevention rings 11 are attached to the power transmission line at a predetermined interval in this manner, in the conventional airborne machine, since there is only one roller 4 in each suspension fitting 3, this single roller 4 is always used for power transmission. It will be pressed against the lines to support the weight of the worker, and the rollers 4 will move above the respective rings 11 when the airborne vehicle is moved so as to pull up the aircraft along the uphill slope of the power transmission line. It is necessary to overcome the above-mentioned pressing load on the power transmission line, which causes a problem that the air vehicle cannot move smoothly and a problem that the mounting position of the ring with respect to the power transmission line moves.

Further, in particular, when the airborne vehicle is moved along the descending slope of the power transmission line, the brake shoe 9 is gradually crimped to the lower surface of the power transmission line 1 and gradually moved while adjusting the strength of the crimping force. However, the brake shoe 9
In the structure in which the cable is crimped to the lower surface of the power transmission line 1 for braking, if a large number of rings 11 are mounted on the power transmission line,
The brake shoe 9 cannot be properly crimped to the lower surface of the power transmission line 1 at the portion 11, and therefore the ring is used at the down slope.
There is a problem that it is impossible to brake the aircraft due to being disturbed by 11.

[Means for Solving the Problems]

The present invention, in order to solve the problems of the conventional airborne vehicle as described above, even in a transmission line having a large number of rings attached as a snow damage countermeasure, it is possible to easily get over these rings,
Moreover, it is an object of the present invention to provide an airborne vehicle in which the mounting positions of the rings, which are spaced by a predetermined distance, can be moved without sliding.

As a specific means for achieving the above-mentioned object, the present invention includes left and right hanging metal fittings that straddle on the power transmission line at both ends of the connecting rod arranged in parallel with the power transmission wire, and the respective hanging metal fittings are provided. A shaft bearing an intermediate part of a bearing arm parallel to the power transmission line, and a pair of rollers each having a sprocket on its side surface at both ends of the shaft supporting arm, and a gear having the sprocket arranged in the intermediate part of the bearing arm. The pair of rollers are mounted so as to be interlocked with each other via the bearing arm so as to be slidable with respect to the hanging metal fittings, and the brake drum is provided on the side surface of the intermediate gear in the left and right hanging metal fittings. And a braking device including a brake band wound around the brake drum, and the rollers rotate in opposite directions to the shaft end of any one of the inner and outer rollers of the bearing arm and the bearing arm. Characterized in that a roller backstop comprising a lock release mechanism of the ratchet wheel and pawl and the pawl that.

[Action]

In the aerial vehicle according to the present invention, the middle portion of the bearing arm provided with a pair of rollers interlocking with each other at both ends is slidably supported by hanging metal fittings supported at both ends of the connecting rod parallel to the power transmission line. Therefore, the load for suspending the fuselage on the power transmission line, which is borne by each roller, is significantly reduced, and when one roller of the pair of rollers comes into contact with the ring on the power transmission line, the roller contacting this ring is reached. Is able to rotate upward about the fulcrum of the intermediate part of the bearing arm, and can easily move over the ring by receiving the rotational force from the rear roller via the intermediate part gear. it can.

Further, in the airborne machine of the present invention, since the roller reverse rotation preventing device is provided on either the inner or outer rollers of the left and right suspension fittings, when the airborne machine is moved so as to pull up the machine body along the upslope of the power transmission line. In addition, the rollers located above the power transmission line at the raised position of the machine body are prevented from descending in the reverse direction downward, and by cooperating with the operation of the brake mechanism, the attitude of the machine body at the pulled up position is stably maintained. You can

Further, in this aerial vehicle, as a roller control mechanism, a band brake is provided on the side surface of the intermediate gear for interlocking the pair of rollers, and braking is applied to the rotation of the intermediate gear. Rollers on both sides of the gear do not interfere with the ring on the power transmission line and can be freely swung in the vertical direction by the bearing arm without receiving the tightening force of the brake band, so that the ring can be passed smoothly. You can

〔Example〕

Next, an intermediate embodiment according to the present invention will be described with reference to the drawings. FIG. 1 is a side view showing a configuration of a single-conductor airborne vehicle that is hung on a single power transmission line and used at predetermined intervals. A pair of left and right suspending metal fittings 13 that straddle the upper surface of the power transmission line 1 are provided at both ends of the connecting rod 12a arranged in parallel with the power transmission line 1 to which the snow damage prevention ring 11 is attached. In addition, intermediate parts of bearing arms 15 parallel to the power transmission line 1 are rotatably attached to these hanging fittings 13 via a support shaft 20, respectively. Each pair of rollers 14
The a and 14b are provided so as to slide on the power transmission line 1 in a state of being vertically swingable around the support shaft 20 of the bearing arm 15.

The left and right suspension fittings 13 are provided at both ends of the connecting rod 12a above the power transmission line 1 and a lower connecting rod 1 arranged below the power transmission line 1.
It is fixedly held by both ends of 2b, but the length of the upper connecting rod 12a is made shorter than that of the lower connecting rod 12b so that the left and right suspension fittings 13 are inclined in a V shape. When the left and right suspension fittings 13 are thus inclined in a V shape, the upper connecting rod is connected to the length of the work mounting suspension seat 45 attached to the lower ends of both suspension fittings 13.
By reducing the length of 12a, the outer rollers 14a, 14 are increased by providing four rollers above both suspension fittings 13.
The space occupied by a can be shortened, and when moving the airship,
It is possible to make it easy for an operator sitting on the mounting suspension seat 45 to perform an operation for holding the power transmission line with both hands.

As shown in FIG. 2, the hanging metal fitting 13 includes two vertical plates 16 sandwiching the power transmission line 1 from both sides, and an upper plate 17 and a lower plate 18 connecting the upper and lower ends of the vertical plate 16. Consisting of an inner vertical plate
A door 16a that opens and closes via a hinge 19 is provided on the 16 and the power transmission line 1 can be set inside the hanging metal fitting 13 by opening the door 16a. Also, as shown in FIG.
Inside the vertical plates 16 of the hanging bracket 13, an intermediate portion of a bearing arm 15 provided with the rollers 14a and 14b is rotatably supported via a support shaft 20.

Each of the rollers 14a and 14b is provided with a non-slip coating 21 made of urethane resin on the outer peripheral surface which contacts the power transmission line 1.

As shown in FIGS. 2 to 4, both rollers 14a and 14b have sprockets 22 on one side of the rollers and mesh with the sprocket 22 on the intermediate support shaft 20 of the bearing arm 15. An interlocking intermediate portion gear 23 is rotatably attached so that both rollers 14a and 14b are always interlocked in the same direction via the gear 23.

Both rollers 14a, 14b are interlocked with each other in the same direction by the intermediate gear 23 in this way, and the bearing arm as described above.
Since 15 can swing up and down by the intermediate support shaft 20,
As shown in FIG. 6, when one of the rollers 14a comes into contact with the ring 11 of the power transmission line 1 during movement of the airborne vehicle, the roller 14a is moved from the rear roller 14b not in contact with the ring 11. While the moving rotational force is transmitted through the intermediate gear 23, the roller 14a side of the bearing arm 15 is moved to the intermediate support shaft 20.
By rotating upward by, an upward force for trying to get over the ring 11 is easily given.

When the roller 14a tries to get over the ring 11, the roller 14a receives the rotational force of movement from the rear roller 14b via the intermediate gear 23 while receiving the bearing arm 15
Since the roller 14a side can ride over the ring 11 by being rotated upward by the intermediate support shaft 20, the running force of the roller 14a does not cause the mounting position of the ring 11 on the power transmission line 1 to shift.

On the other hand, as shown in FIG. 7 to FIG.
At the shaft end 24 of the outer roller 14a on the side opposite to the both sides on which the sprocket 22 is provided, a roller reverse rotation preventing device 25 including a claw wheel 26, a claw 27 and a lock release mechanism 28 for the claw 27 is provided. Is provided.

The claw 27 and the lock release mechanism 28 of the roller reverse rotation prevention device 25 are provided on the bearing arm 15 that pivotally supports the roller 14a, but as shown in FIG. Provided claw 27 and left hanging metal fitting 13
The pawls 27 provided on the bearing arm 15 in FIG. 2 are attached to the ratchet wheel 26 in opposite directions, and all of these pawls 27 are always meshed with the ratchet wheel 26 by a spring 27a shown in FIG. ing.

As shown in FIG. 8, the lock release mechanism 28 of the pawl 27 is
The case 29 is provided so as to surround the claw 27 and the claw 27, and includes a cylinder 30 and a pin 31, which are provided so as to project outside the portion where the claw 27 is located. Further, as shown in FIG. 9, the cylinder 30 is provided with a deep groove 32 and a shallow groove 33 at positions where the upper end surface intersects each other in a cross shape. Furthermore, the pin 31 has a knob 34 at the upper end,
Below the knob 34, the branch pin 3 that engages with both the grooves 32, 33.
In addition to having 5, the lower part has a ring 37 that supports the lower surface of a spring 36 provided in the cylinder 30.

The pin 31 is always pushed downward by the force of the spring 36 received by the ring 37.
When the pin 31 is pulled up so that the branch pin 35 is engaged with the shallow groove 33 on the upper end surface of the cylinder, the pin 31 is maintained in the state of being pulled up, and the engagement state of the pawl 27 with the ratchet wheel 26 is maintained. To be done. Further, when the pin 31 is once pulled up from this state and the branch pin 35 is engaged with the deep groove 32 while rotating as shown in FIG. 8b, the lower end of the pin 31 pushes down the rear end of the claw 27, so
The engagement state between 27 and the ratchet wheel 26 is released.

When the claw 27 is separated from the ratchet wheel 26, the roller 14a freely rotates, but when the claw 27 is engaged with the ratchet wheel 26,
Even if the roller 14a rotates in one direction, it does not rotate in the other. Therefore, as shown in FIG. 7a, when pulling up the aircraft along the power line 1 having an upward slope, the pawl 27 of the reverse rotation preventive device 25 of the outer roller 14a of the right side suspension 13 is separated from the ratchet wheel 26. And the outer roller of the left-hand suspension 13
When the claw 27 of the reverse rotation preventing device 25 in 14a is engaged with the ratchet wheel 26, the outer roller 14a of the left suspension metal fitting 13 rotates in the clockwise direction and moves in the right direction, but in the counterclockwise direction. Does not rotate and is blocked from moving to the left.

Similarly, as shown in FIG. 7b, when pulling up the aircraft along the power line 1 having an upward slope, the reverse rotation prevention device 25 of the left suspension metal fitting 13 is set free, and the reverse rotation prevention device 25 of the right suspension metal fitting 13 is set. When is operated, the outer roller 14a of the right-side hanging fitting 13 rotates in the counterclockwise direction and moves to the left side, but does not rotate in the clockwise direction and is blocked from moving to the right side.

Further, as shown in FIG. 5, the rollers 14a, 14 of each suspension fitting 13 are
On the back of the intermediate gear 23 that links b, the brake drum 3
8 is provided, and a brake band 3 is provided on the brake drum 38.
9 is wound. Each of the brake bands 39 has a tip connected to an arm 40 protruding laterally of the hanging fitting 13, and a rear end connected to both ends of a link 41 pivotally mounted on the lower connecting rod 12b. By operating a brake operating lever 42 extending from the link 41 to rotate the link 41 about an intermediate fulcrum 43, the brake band 39 is moved to the drum 38.
Can be tightened. When the brake drum 38 is tightened by the band 39, the intermediate gear 23 is fixed, so that the left and right rollers 14a and 14b do not work together, and the movement of the machine body is blocked.

As shown in FIG. 1 and FIG. 2, suspension rods 44 are respectively hung at the lower ends of the left and right suspension fittings 13, and the above-mentioned worker mounting hanging seats 45 are attached to the lower ends of these suspension rods 44. There is. In addition, reference numeral 46 in FIG. 2 is a back support belt of the worker connected between both suspension metal fittings 13, and reference numeral 47 in FIG. 1 indicates the tip of the brake operating lever 42 and the hanging seat 45. It is a stepping operation rope for the lever 42 connected to one end.

〔effect〕

In the air vehicle according to the present invention, the bearing arms 15 are attached to the left and right suspension fittings 13.
, A pair of rollers 14a, which are pivotally mounted in the vertical direction by an intermediate support shaft 20 and are pivotally mounted on both ends of these bearing arms 15.
Since the intermediate gear 23 of the bearing arm 15 interlocks 14b with each other in the same direction, when the airborne vehicle is moved along the power transmission line to which the ring 11 is attached, either roller 14a is moved. When the roller 14a contacts the ring 11 of the power transmission line 1, the roller 14a transmits the rotational torque from the rear roller 14b not in contact with the ring 11 via the intermediate gear 23,
Since the roller 14a side of the bearing arm 15 is pivoted upward by the intermediate support shaft 20 and easily gets over the ring 11, the power transmission line having the ring 11 can be safely moved without any trouble.

Further, in this airborne machine, the ratchet wheel 26 and the claw 27 for rotating the rollers in opposite directions are provided at the shaft ends of either the inner or outer rollers of the left and right suspension fittings 13, and the lock releasing mechanism of the claw 27. Since a roller reverse rotation prevention device 25 consisting of 28 is provided,
When pulling the aircraft along the slopes on the left and right of the transmission line, one roller is prevented from rotating in the opposite direction at the moved position of the aircraft, and it is possible to reliably prevent the aircraft from returning. Climbing can be done very easily.

Further, as the braking device for the rollers 14a and 14b, the intermediate gear 23 for interlocking with the roller is fixed by tightening the brake band 39, so that even when the gear 23 receives the braking force by the brake band 39. , The left and right rollers of the gear
Since the bearing arms 15 allow the 14a and 14b to freely swing up and down, a reliable braking state can be maintained at any position on the power transmission line including the ring 11.

[Brief description of drawings]

FIG. 1 is an overall side view showing the structure of an air vehicle according to the present invention,
2 is a sectional view taken along line II-II in FIG. 1, and FIG.
The figure is a cross-sectional view taken along the line III-III in FIG. 1, and FIG.
Fig. 5 is a sectional view taken along line IV-IV in Fig. 5, Fig. 5 is a sectional view taken along line VV in Fig. 3, Fig. 6 is a partial sectional view showing the operating state of the roller, and Figs. 8A and 8B are sectional views showing the structure of the roller reverse rotation preventing device, FIG. 9 is a sectional view taken along the line IX-IX of FIG. 8, and FIG. It is a side view which shows the structure of a machine. 1: Transmission line, 11: Snow damage prevention ring, 12a, 12b: Connecting rod, 13: Hanging metal fittings, 14a, 14b: Roller, 15: Bearing arm, 20: Shaft, 21:
Non-slip coating, 22: sprocket, 23: intermediate gear, 25:
Roller reverse rotation prevention device, 26: claw wheel, 27: claw, 28: lock release mechanism, 38: brake drum, 39: brake band, 41: link, 42: brake operating lever, 44: suspension rod, 45: suspension seat,

Claims (1)

[Claims] Claim: What is claimed is: 1. A connecting rod (12a) arranged in parallel with the power transmission line (1) is provided with left and right hanging metal fittings (13) which straddle on the power transmission wire, respectively, and each of the hanging metal fittings has a bearing arm (15) parallel to the power transmission wire. A pair of rollers 14a and 14b each having a sprocket 22 on its side surface are provided at both ends of the bearing arm so as to interlock with each other through a gear 23 arranged in the middle portion of the bearing arm. Pivotally attached to the pair of rollers 14a, 14b
Is provided so as to be swingable with respect to the hanging metal fitting 13 via a bearing arm 15, and a brake drum 38 is provided on a side surface of the intermediate gear 23 in the left and right hanging metal fittings 13, and a brake wound around the brake drum. A braking device including a band 39 is provided, and a ratchet wheel 26, a claw 27, and the claw 27 on which the respective rollers rotate in opposite directions, on the shaft end of either the inner or outer roller of the bearing arm 15 and the bearing arm 15. An aerial machine for work on power transmission lines, which is provided with a roller reverse rotation preventing device including a lock releasing mechanism 28 of 27.