JPH0465608B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to high-voltage power transmission lines and maintenance and inspection work.
This invention relates to the improvement of a spacecraft for power transmission line work, which allows workers to travel along power transmission lines.

[Conventional technology]

As a conventional spacecraft of this type, the 11th
As shown in the figure, hanging fittings 3 having one roller 4 that sit on the power transmission line 1 are provided at both ends of a connecting rod 2 arranged parallel to the power transmission line 1, and the hanging rods are attached to the hanging fittings 3, respectively. At the same time, a link 8 is attached to the lower side of the hanging fitting 3 near the roller 4 by actuation of the brake operating lever 7.
A brake shoe 9 is known that is provided with a brake shoe 9 that presses the lower circumferential surface of the power transmission line 1 via the brake shoe 9.

This spacecraft is moved by a worker who is seated on the above-mentioned suspension seat and uses rollers to handle power lines, and at the working position, the worker steps on a foot rope 10 connected to a brake operating lever to operate the lever. By rotating, the brake shoe 9 is pressed against the power transmission line 1 from below, and work is performed while fixing the machine body.

In this way, in the conventional spacecraft, the fixed control means of the aircraft body presses the brake shoe 9 against the power transmission line 1 from below in the vicinity of the roller 4, and connects the power transmission line 1 between the upper roller 4 and the brake shoe 9. It has a structure that allows it to be clamped.

[Problems to be Solved by the Invention] The above-mentioned spacecraft has no particular problem as long as it is used for a power transmission line consisting only of bare wires without any protrusions on the outer surface of the wires. However, recently, there have been accidents in which steel towers collapsed due to the weight of snow accumulated on power transmission lines during snowfall, so plastic rings 11 were placed on the power transmission lines 1 at intervals of about 30 to 90 cm as a measure against snow damage. Now installed.

In this way, when the snow damage prevention rings 11 are attached to the power transmission line at predetermined intervals, in the conventional spacecraft, there is only one roller 4 in the hanging fitting 3;
Since this roller 4 is always pressed against the power transmission line in order to support the weight of the worker, when the spacecraft moves, the roller 4 moves on each ring 11 to resist the pressing load on the power transmission line. This causes problems in that the spacecraft cannot be moved smoothly and the predetermined mounting position of the ring relative to the power transmission line may be shifted.

Particularly when the spacecraft is moved along a gradient below the power transmission line, the brake shoe 9 is kept mostly pressed against the lower surface of the power transmission line 1, and the brake shoe 9 is gradually moved while adjusting the strength of the pressing force. However, in this structure in which the brake shoe 9 is crimped to the lower surface of the power transmission line 1 for braking, when a large number of rings 11 are installed on the power transmission line, the brake shoe 9 is always crimped to the lower surface of the power transmission line 1. Therefore, there is a problem in that on a downhill slope, the ring 11 gets in the way, making it impossible to brake the aircraft at all.

[Means to solve the problem]

The present invention is designed to overcome the above-mentioned problems with conventional spacecrafts, and is capable of easily climbing over power transmission lines with multiple rings attached to them as a measure against snow damage. The object of the present invention is to provide a spacecraft in which the mounting position of a placed ring can be moved without shifting at all.

As a specific means for achieving the above-mentioned object, the present invention is provided with hanging fittings that sit on the power transmission line at both ends of a connecting rod arranged parallel to the power transmission line, and the hanging fittings include hanging fittings that straddle the power transmission line. By pivotally supporting the middle part of a parallel bearing arm and pivotally attaching a pair of rollers that interlock with each other via an interlocking mechanism on the power transmission line to both ends of the bearing arm, the pair of rollers can move the bearing arm against the hanging fitting. A brake mechanism is provided on the roller to be operated via a brake operation lever provided on a part of the machine body, and a brake mechanism is provided on the roller to be operated via a brake operating lever provided on a part of the machine body, and a brake mechanism for mounting the worker is provided on the hanging fitting or the connecting rod. It is characterized by a hanging seat.

[Effect]

In the spacecraft according to the present invention, the pair of rollers provided at both ends of the connecting rod parallel to the power transmission line can be freely swung relative to the hanging fitting by means of bearing arms whose intermediate portions are pivotally supported by the hanging fitting. This greatly reduces the suspension load of the aircraft on the power transmission line, which is borne by each roller, and allows one of the rollers in contact with the ring on the power transmission line to move the bearing arm up and down around the middle fulcrum. By rotating in the direction, the ring can be easily moved over the ring.

In addition, in this spacecraft, as a means to perform fixed control on the power transmission line, a brake mechanism is installed on the roller so that the roller itself is fixed on the power transmission line, so that the brake mechanism is attached to the ring on the power transmission line. It does not become an obstacle and the work can be carried out under appropriate brake control.

〔Example〕

Next, an embodiment of the spacecraft according to the present invention will be explained with reference to the drawings. FIG. Hanging fittings 13 that sit over the upper surface of the power transmission line 1 are provided at both ends of connecting rods 12 arranged parallel to the power transmission line 1 to which snow damage prevention rings 11 are attached. A pair of front and rear rollers 14a and 14b, which are pivotally attached to both ends of a bearing arm 15 parallel to the power transmission line 1, are provided so as to slide on the power transmission line 11.

As shown in FIG. 4, the hanging fitting 13 includes two vertical plates 16 that sandwich the power transmission line 1 from both sides;
It consists of an upper plate 17 and a lower plate 18 that connect the upper and lower ends of the vertical plate 16, and the inner vertical plate 16 is provided with a door 16a that opens and closes via a hinge 19. Power line 1 inside 13
It is now possible to set the This hanging fitting 1
3, the intermediate portions of the bearing arms 15 are rotatably attached to the inner sides of the vertical plates 16 via support shafts 20, and the pair of rollers 14a, 14b are mounted at both ends of the bearing arms 15. These rollers 14a and 14b are pivoted and are configured to swing vertically about a support shaft 20 of the bearing arm 15.

As shown in FIG. 5, both of the rollers 14a and 14b are provided with a non-slip coating 21 made of urethane resin or rubber on their outer circumferential surfaces in contact with the power transmission line 1.

Further, both rollers 14a and 14b have a sprocket 22 connected to each other via a chain 23 on one side of the rollers, as shown in FIGS. 2 to 4.
and a brake drum 24 having a brake band 25 wrapped around its surface, and is always interlocked by a chain 23 that meshes with the sprocket 22.

Both rollers 14a and 14b are vertically swingable by a bearing arm 15 and are interlocked with each other by a chain 23, so that one of the rollers 14a is connected to the ring of the power transmission line 1 as shown in FIG. 11, the roller 14a touches the ring 1
While receiving rotational force from the chain 23 from the other roller 14b that is not in contact with the ring 11, the ring 11 is directed upward in an attempt to get over the ring 11. This roller 14
The upward directed force of a is caused by the bearing arm 15
This is easily caused because the roller 14b is swingable around the lifting member 13 and half of the machine load acting on the hanging fitting 13 is borne by the other roller 14b. Therefore, when the roller 14a tries to get over the ring 11, the running force of the roller causes the ring 1
1 can be easily moved over the ring 11 without shifting along the length of the power transmission line.

On the other hand, as shown in FIG. 2, the brake bands 25 are wound around the brake drums 24 of the rollers 14a and 14b in opposite directions, and one end is connected to the bearing arm 15 via a pin 28. and a link 27 whose other end is pivotally connected to the support shaft 20 of the bearing arm 15 via a rod 26, respectively.
The support shaft 20 is connected at upper and lower positions across the support shaft 20 .

Further, as shown in FIG. 1, a base end portion 3 of a brake operating lever 29, which is always pulled upward by a spring 30, is provided at the intermediate portion of the connecting rod 12.
1 is pivoted by a support shaft 32. Further, the upper and lower positions of the lever base end portion 31 across the support shaft 32 and the upper end of the operating link 27 of the brake band 25 are connected via rods 33, respectively, and when the lever 29 is pulled downward, the respective The rod 33 is pulled in the direction of the arrow to rotate the link 27, and the brake band 25 tightens the drum 24, applying brakes to the rollers 14a and 14b.

Hanging rods 34 are suspended from the lower ends of the hanging fittings 13 at both ends of the connecting rod 12, and worker suspension seats 35 are attached to the lower ends of both the front and rear hanging rods 34. In addition, in FIG.
It is a support belt for the worker that is continuous between 3 and 3.
Reference numeral 7 denotes a foot operation rope for the brake operation lever 29, which is continuous between the tip of the brake operation lever 29 and one end of the hanging seat 35. 42 is a grounding roller.

Figure 6 shows parallel multi-conductor transmission lines 1 at the same height.
This is an example of a spacecraft used in the above transmission lines 1a and 1b. The hanging fittings 13 on the same side at both ends of each connecting rod 12 are connected by a connecting pipe 38 that can be expanded and contracted according to the interval between the parallel power transmission lines 1a and 1b, and hanging plates are installed on both hanging seats 35. 39, so that workers can ride on the suspension plate 39 between both power transmission lines. Further, FIG. 7 shows an embodiment in which only one suspension rod 34 for suspending the worker mounting suspension seat 35 is suspended from the intermediate portion of the continuous rod 12.

In addition, rollers 14a provided on the hanging fitting 13,
14b is the sprocket 22 in the above embodiment.
and chain 23, but as shown in Fig. 8 a.
It may also be a pulley 40 provided on the side surface of the roller and a V-belt 41 stretched over the pulley 40 as shown in FIG. Furthermore, as shown in FIG. 8b, a pulley 40 is provided in the valley of the outer peripheral surface of the roller, so that both rollers 14a and 14b are directly connected to the V
They may be connected by a belt 41.

In addition, FIGS. 9 and 10 show rollers 14a and 1
As means for interlocking the rollers 4b, sprockets 22, 22 are provided on one side of both rollers.
Another embodiment is shown in which the gear 50 is arranged in the middle. In this embodiment, the gear 50 is the bearing arm 15.
The rollers 14a, 14b are rotatably mounted on a support shaft 20 which is mounted at the intermediate portion of the rollers 14a, 14b. It is configured to rotate.

Furthermore, the brake mechanism provided on the rollers 14a, 14b was constructed of a brake drum 24 provided on the side surface of the roller and a brake band 25 that tightens the outer circumferential surface of the brake drum 24 in the above embodiment, but this brake mechanism does not necessarily include such a band. Although not limited to the brake type, a pair of expandable linings are provided on the inner circumferential surface of the roller, and both linings are connected via the link 27, as has long been known as a brake mechanism, although not particularly shown in the drawings. A so-called internal expansion type brake mechanism operated by a rotating cam, or a pillow type brake mechanism in which the brake shoe is pressed against the outer circumferential surface of a roller or brake drum, etc., may be adopted. good.

〔effect〕

In the spacecraft according to the present invention, the means for moving the aircraft while suspended on the power transmission line is a pair of rollers provided at both ends of a continuous rod parallel to the power transmission line, and for single conductor Since both ends of the rod are supported on the power transmission line by four rollers, the load on each roller to suspend the aircraft from the power transmission line is significantly reduced. Further, the pair of rollers in each of the hanging fittings are configured such that each roller can swing vertically by a horizontal bearing arm whose intermediate portion is pivoted on the hanging fitting, and both rollers are connected to each other by a chain. They are interlocked via an interlocking mechanism such as a belt or gear, so when one roller comes into contact with a ring attached to a power transmission line, that roller receives running rotational force from another roller that is not in contact with the ring. By swinging the bearing arm, the ring can be easily climbed over, allowing the aircraft to move smoothly. In addition, two twist prevention dampers 42 are installed in the span of the power transmission line as shown in Fig. 6.
However, according to the spacecraft of the present invention, not only the ring but also these torsion prevention dampers 42 as shown in FIG. 4 can be moved without any hindrance. can do.
Furthermore, the spacecraft of the present invention is configured so that fixed control of the aircraft body can be achieved by applying braking force to the rollers themselves, so unlike conventional spacecrafts, the brake shoe does not directly crimp the power line. , it is possible to reliably solve the problem of the ring getting in the way of braking by the brake shoe and preventing braking, or the brake shoe shifting the mounting position of the ring. This has the effect that driving can be carried out efficiently without any hindrance.

[Brief explanation of drawings]

Fig. 1 is an overall side view showing the configuration of a spacecraft according to the present invention, Fig. 2 is a partially enlarged side view of main parts in Fig. 1, Fig. 3 is a sectional view taken along the - line in Fig. 1, 4 is a sectional view taken along the - line in FIG. 1, and FIG. 5 is a side view showing the operating status of the roller.
Fig. 6 is a perspective view showing another embodiment of the spacecraft;
8A and 8B are plan views showing another embodiment of the roller interlocking means; FIG. 9 is a side view showing still another embodiment of the roller interlocking means; FIG. 10 is a plan view of the structure shown in FIG. 9, and FIG. 11 is a side view showing the structure of a conventional spacecraft. 1: Power transmission line, 11: Snow damage prevention ring, 12: Connecting rod, 13: Hanging fitting, 14a, 14b: Roller, 1
5: Bearing arm, 20: Support shaft, 21: Anti-slip coating, 22: Sprocket, 23: Chain, 2
4: Brake drum, 25: Brake band, 2
7: Link, 29: Brake operation lever, 34:
Hanging rod, 35: Hanging seat, 40: Pulley, 41: V-belt, 50: Gear.

Claims (1)

[Scope of Claims] 1. Hanging fittings that sit over the power transmission line are provided at both ends of a connecting rod arranged parallel to the power transmission line, and the hanging fittings are provided with an intermediate portion of a bearing arm parallel to the power transmission line as a pivot. do,
A pair of rollers that interlock with each other via an interlocking mechanism are mounted on both ends of the bearing arm on the power transmission line, so that the pair of rollers can swing freely relative to the hanging fitting via the bearing arm, The roller is provided with a brake mechanism operated via a brake operating lever provided on a part of the machine body, and a suspension seat for mounting a worker is suspended from the suspension fitting or the connecting rod. A spacecraft for working on electric cables. 2. The brake mechanism for the roller includes a link that is pivoted on a support shaft of a bearing arm to be operated by a brake operating lever provided on a connecting rod, and a link that is wound around a brake drum on the side of the roller to rotate the link. 2. A spacecraft for working on power transmission lines as set forth in claim 1, comprising a brake band that is actuated by motion. 3. The power transmission line work space according to claim 1 or 2, wherein a suspension seat for mounting a worker is suspended from a suspension fitting to which the interlocking rollers are pivoted, via suspension rods, respectively. Boarding machine. 4 Connecting rods equipped with the interlocking rollers at both ends are respectively arranged on parallel multi-conductor power transmission lines of the same height, and a suspension seat for mounting a worker is suspended from the center of each of the connecting rods. A spacecraft for working on power transmission lines according to claim 1 or 2, which is supported by the following claims.