JPH02185872A - Caterpillar type conductor line car - Google Patents

Abstract

PURPOSE:To keep off any damage to a cable by installing a symmetrical two-set of crawler units, having each of caterpillar type rubber belts rolling on an overhead wire, in a line traverse frame of a midair vehicle doing work of maintenance and inspection for the overhead wire, and sharing each lifting load uniformly on these crawler units. CONSTITUTION:This midair vehicle has a midair vehicle body 1 consisting of a line traverse frame 5 having a symmetrical pair of portal frame bodies 2, 3 connected in a sectral-form tilted state with upper and lower crossbars 4a, 4b and a bench 7 hangingly supported on the underside of this line traverse frame 5 rockably via support plates 6a, 6b and support rods 7a, 7b. In addition, a symmetrical two-set of crawler units 8, 9 traveling on an overhead wire W are installed on the inside of the line traverse frame 5 of this midair vehicle body 1 at a specified interval. Each of these crawler units 8, 9 consists of caterpillar type rubber belts 80, 90 rolling on the overhead wire and plural numbers of rollers 81-83 and 91-93 winding these rubber belts 80, 90.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an optical fiber composite aerial type m (OPTI CALGROUND) having an optical fiber inside an electric wire.
WIRE) or a worker rides on an uneven overhead power line equipped with an anti-snow ring,
This invention relates to a caterpillar-type spacecraft for overhead power line work that performs maintenance and inspection work on overhead power lines.

[Conventional technology]

As a conventional technique, there is a spacecraft for working on overhead power lines, as shown in FIG. 5, for example. This spacecraft carries a worker and travels on overhead power lines to carry out maintenance and inspection work on the overhead power lines W. The spacecraft body 30 has a pair of left and right wheel shaft supporting members 81°. 32 connected by a horizontal bar 33, and a rod-like member 35 on the underside of this overhead wire traveling frame 34.
．． The seat, which is swingably suspended via the support member 38, is composed of a stand 37, and the wheel shaft supporting member 31.82 is equipped with a pulley that runs on the overhead electric wire W and has an electric wire insertion groove surrounded on its outer periphery. A shaped rolling wheel 38, 39 is mounted on the shaft.

The spacecraft main body 30 also includes a brake lever 42 that can be moved vertically and vertically and rotates downward when the operator on board steps on a brake rope 41 with his or her foot, and a brake lever 42 that transmits the movement of the brake lever 42 to a brake shoe 43. A brake device 40 is provided that includes a link mechanism 44 that raises the brake shoe 43 and brings it into pressure contact with the overhead electric wire W.

Then, the worker sits horizontally on the platform 37 with the seat facing perpendicular to the overhead electric wires W, and moves the entire spacecraft along the overhead electric wires W in a desired direction using the force of his hands. When the electric wire W reaches a construction site or a maintenance inspection site, the brake device 40 is actuated by foot operation to stop the spacecraft and perform necessary work.

[Problem to be solved by the invention]

Since the conventional spacecraft is suspended from the overhead power line W by the two rolling wheels 38 and 39, the contact state of the wheels with the overhead power line W is equivalent to point contact. When the overhead electric wire W is an optical fiber composite overhead electric wire with an optical fiber inserted, there is a problem that the optical fiber is damaged or broken, and it is difficult for snow to accumulate on the optical fiber. When the wheels 38 and 39 are mounted on an uneven overhead electric wire W, the wheels 38 and 39 are fitted with anti-snow rings (installed at regular intervals on the overhead electric wire, and each anti-snow ring is attached to the electric wire at regular intervals). There was a problem in that the anti-snow ring was damaged when climbing over a small protrusion of about 3 to 4 mm from the outer circumferential surface.

Furthermore, the conventional brake device 40 installed in the spacecraft main body 30 raises the brake shoes 43 and connects the overhead electric wire W.
Since the structure is such that the overhead wires W are in pressure contact with each other, there is a problem that the overhead wires W may be crushed or damaged when the brakes are applied strongly.

This invention was made in order to solve the above-mentioned conventional problems, and its purpose is to prevent damage, breakage, crushing, etc. of overhead electric wires, and also to prevent snow accumulation when an anti-snow ring is attached to an overhead electric wire. The object of the present invention is to provide a caterpillar-type aerial vehicle for working on overhead power lines that is improved so as to prevent damage to the anti-snow ring.

[Means to solve the problem]

In order to achieve the above object, the caterpillar type spacecraft of the present invention (first invention) has a seat on the main body of the spacecraft mounted on an overhead wire traversing frame on which a platform is suspended, and a caterpillar type spacecraft that rolls on the overhead wires. It is equipped with two sets of left and right crawler devices consisting of a caterpillar type rubber belt and a plurality of rollers on which the caterpillar type rubber belt is hung, and is configured so that the hanging load is equally borne by the two sets of left and right crawler devices. It is.

Further, in the second invention, in order to ensure that the hanging load is evenly applied to the overhead electric wire even if the installed state of the overhead electric wire is not a straight line but has an appropriate slack angle, a plurality of belt hanging rollers in the crawler device are used. without fixing it in one piece,
The structure includes a roller support plate structure in which the roller moves up and down in accordance with the catenary angle (wire slack angle) of the overhead wire. Furthermore, in the third invention, in order to prevent the overhead electric wires from being crushed or damaged, the brake device installed on the spacecraft body is equipped with a foot-operated disc that applies braking to the belt hanging roller of the crawler device. It was used as a brake device.

[Effect]

According to the caterpillar type aerial vehicle having the above configuration, the hanging load of the entire aerial vehicle, including the weight of the worker and the weight of the work equipment, is distributed by the two sets of right and left crawler devices and is equally applied to the overhead power lines. Even if it is an optical fiber composite overhead wire with an optical fiber inserted therein, it is possible to prevent the optical fiber from being damaged or broken. In addition, even if the overhead power line is uneven and has a snow-resisting ring attached to it, the crawler device can smoothly overcome the snow-retaining ring due to the elasticity of the caterpillar rubber belt, preventing damage to the snow-retaining ring. Traveling on top is also easy.

Furthermore, the brake device installed on the spacecraft is a foot-operated disc brake device that applies braking to the belt-hung rollers of the crawler device, so even if the brakes are applied strongly, overhead power lines will not be damaged. There is no problem of crushing or damage to the overhead wires, and the problem of damage to the wires due to braking can also be solved.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings in FIGS. 1 to 5. This caterpillar type spacecraft carries a worker and travels on overhead power lines, performing maintenance and inspection work on overhead power lines W. The spacecraft body 1 consists of a pair of left and right gate-shaped frames 2 and 3 connected by upper and lower horizontal bars 4a and 4b in a convex inclined configuration as shown in Figure 1. 5 and
Support plates 6a, 6b and a support rod 7 are provided on the underside of this overhead wire transverse frame 5.
The seat, which is swingably suspended via a and 7b, is composed of a stand 7, and an overhead wire W is installed inside the overhead wire traversing frame 5.
Two sets of left and right crawler devices 8.9 are installed at a predetermined interval.

These two sets of left and right crawler devices 8 and 9 include a caterpillar type rubber belt BO190 that rolls on the overhead electric wire W, and a number of rollers 81 to 83, for example, three each, on which the caterpillar type rubber belt 80 and 90 are hung. The belt hanging rollers 81 to H, 91 to 93 of each crawler device 8.9 are connected to the left and right frames 2.
3, a main roller support plate 84.94 is pivotally supported to be movable up and down about the main fulcrum shafts A and B, and this main roller support plate 84
．． Sub-fulcrum axis a for 94.

As shown in FIGS. 1, 2, and 4, it is pivoted to a sub-roller support plate 85.95 which is pivotally supported to be movable up and down about b.

That is, each of the belt hanging rollers 81 to 83, 91 to
93, the first belt hanging roller 81.91 and the second belt hanging roller 82.92 have belt meshing teeth 89 on their outer peripheries.
The third belt hanging rollers 83, 93 are formed as toothed rollers having the same diameter and located at the left and right ends of the overhead wire traversing frame 5, and have large diameter roller wheels 83a at both ends.
, 93a, and is configured as a toothed drum-shaped roller having belt engaging teeth 89a, which are the same as the belt engaging teeth 89a of the rollers 81, 82 and 91,92, on the belt hanging portion (outer circumference of the roller groove). The belt hanging roller 83 on the left side, for example, is provided with brake discs 8B and 86a fixed to both sides of a roller wheel 83a. The third belt-hanging roller 83.93 is supported by the main roller support plate 84.93 on the left and right frames 2.degree. 94 with a roller shaft 87.97, and the first
The belt hanging roller 81.91 and the second belt hanging roller 82.92 are connected to the roller shaft support (third belt hanging roller 8g, 93 roller shaft 87.97) of the main roller support plate 84.94. The sub-fulcrum shaft a of the sub-roller support plate 85.95 is pivotally supported at the opposite end so as to be movable up and down on the sub-fulcrum shafts a and b.

As shown in FIGS. 1 and 4, roller shafts 88 and 98 are rotatably attached to the left and right end portions sandwiching b.

Therefore, the caterpillar type rubber belt 80.90 and the belt hanging rollers 81-83, 91-93 are connected to the main roller support plate 8.
When two sets of left and right crawler devices 8.9, which are combined with 4, 94 and a sub-roller support plate 85.95, are placed on the overhead electric wire W as shown in Fig. 1, each belt hanging roller 81-83° 91~
The main roller support plate 84.94 and the sub-roller support plate 85.95, which pivotally support the roller 93, can now move freely around the main fulcrum shafts A, B and the auxiliary fulcrum shafts a, b, respectively. Each set of belt hanging rollers 81 to 83 and 91 to 93 can always receive the hanging load equally even if the overhead electric wire W is installed not in a straight line but at a slack angle.

In addition, the caterpillar type rubber belt 80.90 of the crawler device 8.9 has each belt hanging roller 81~83°91~
The caterpillar type rubber belt 80.93 has roller meshing teeth 89b on the inside of the belt that mesh with the belt meshing teeth 89a of 93, and the roller meshing teeth 89b and each belt meshing tooth 89a mesh as shown in FIGS. 90 is hung on the belt hanging rollers 81 to 83 and 91 to 93 so as not to idle. In addition, the caterpillar type rubber belt 8
V-shaped grooves 89c of an appropriate depth are arranged in rows at regular intervals in the rotational direction on the outer periphery of the 0.90 mm. Shape groove 89
If the belt c fits into the protruding part of the anti-snow ring, or does not fit into the protrusion, the toothed part between the grooves on the outside of the belt is elastically deformed, allowing the belt to easily climb over the anti-snow ring. This prevents damage to the snow accretion ring.

Reference numeral 10 denotes a foot-operated disc brake device for stopping the flight of the spacecraft main body 1. Disc 8B, 88
A pair of brake units 11.a are mounted to face each other. lla, this brake unit 11.
lla are connected by a connecting rod 12 as shown in FIG. The brake unit 11.11a includes a brake shoe 13.13a that contacts the brake disc 86.86a of the roller wheel 83a, and this brake shoe 13.1.
A brake cam 14.14a is incorporated as shown in FIG. 3 to operate the brake cam 14.14a to press the brake disc 3a against the brake discs 8B, 80a. This brake cam 14.14a has operating protrusions 17, 17a that engage with the oblong guide hole 1B of the brake lever 15.15a as shown in FIGS. 2 and 3, and a cam portion 18.1 that presses the brake shoe 13.13a. 18a, the middle part of which has a cam operating projection 17.17a and a cam portion 18.17a.
The brake unit 11.18a is rotatable in the vertical direction by a cam fixing screw 19.19a perpendicular to the brake unit 11.18a. l
It is pivoted within la.

The brake lever 15.15a has the horizontally elongated guide hole 16 in which the cam operating protrusion 17.17a engages, and the brake lever support bolt 20 (brake unit 11.ll).
The brake cam 14.14a has an arcuate guide hole 21 that engages with the brake cam 14.14a (screwed into the brake cam 14.
11. It is pivotally supported on the outer wall of lla so that it can move up and down. This brake lever 15.15a is operated by the operator using his/her foot to operate the brake lobe 23 (brake lever 15, 15a).
One end is fixed to the connection shaft 24 of the brake cam 14, and the other end is rotated downward when stepping on the seat (one end of which is fixed to the connecting shaft 24 of the brake cam 14).
．． 14a is pressed down and rotated, and this cam rotation presses the brake shoe 13.13a against the brake disk 86.88a to perform braking, but this braking operation, that is, the foot pedal operation of the brake lobe 23 is released. A tension spring 25 is installed between the brake lever connecting shaft 24 and the brake unit connecting rod 12 so that the brake shoes 13, 13a are in the brake release state when the brake lever is pressed.
It is strung up as shown in Figure 3.

In the above embodiment, a case has been described in which the disc brake device IO is provided only on the left side crawler device 8, but the same effect can be obtained even if it is provided on both left and right crawler devices 8 and 9. Also, regarding the crawler device 8.9, a caterpillar rubber belt 80.90 is provided with grooves 8 on the outside of the belt.
It is possible to use a rubber belt that does not have 9c, and the same effect can be obtained even if the number of belt hanging rollers 81 to 83 and 91 to 93 is increased to 4 or 5. Furthermore, although the above-mentioned embodiments have explained that the spacecraft has a single-conductor structure suspended from one overhead electric wire W, the spacecraft may have a double-conductor structure suspended from two overhead electric wires W. In this case, it is constructed as a multi-conductor type having a total of four crawler devices in which two single-conductor configuration spacecraft are connected.

〔Effect of the invention〕

Since the capillary spacecraft of the present invention has the above-described configuration, the hanging load of the entire spacecraft, including the weight of the worker and the weight of the work equipment, is distributed between the two sets of left and right crawler devices. The cables can be applied evenly to the overhead electric wires, and therefore, even if the overhead electric wires are optical fiber composite overhead wires with optical fibers inserted therein, it is possible to prevent the optical fibers from being damaged or broken. In addition, even if the overhead power line is uneven and has a snow-resisting ring attached to it, the crawler device can smoothly overcome the snow-retaining ring due to the elasticity of the caterpillar rubber belt, preventing damage to the snow-retaining ring. Traveling on top is also easy.

Furthermore, the brake device installed on the spacecraft is a foot-operated disc brake device that applies braking to the belt-hung rollers of the crawler device, so even if the brakes are applied strongly, overhead power lines will not be damaged. There is no problem of crushing or damage to the overhead electric wires, and the problem of damage to the electric wires due to braking can be solved, which is an excellent effect.

[Brief explanation of the drawing]

FIG. 1 is a front view of a caterpillar-type spacecraft according to an embodiment of the present invention suspended from an overhead power line, and FIG. 2 is an enlarged view of the left side crawler device of the same caterpillar-type spacecraft. Figure 3 is a longitudinal sectional view taken along line ■-■ in Figure 2, Figure 4 is a cross-sectional view taken along line ■-IV in Figure 2, and Figure 5 is a diagram for conventional overhead power line work. It is a front view showing a spacecraft. W: Overhead electric wire, 1: Aircraft body, 5: Traverse overhead wire frame, 7: Seat is a stand, 8: Left side crawler device, 80: Caterpillar type rubber belt, 81 ~83・
... Belt hanging roller, 84 ... Main roller support plate, 85
... Subroller support plate, 8B, 86a... Braking disc,
9... Right side crawler device, 90... Caterpillar type rubber belt, 91-93... Belt hanging roller, 94
...Main roller support plate, 95...Subroller support plate, 10.
・・Foot operated disc brake device, 13° 13a
...Brake shoe, 14.14a...Brake cam, 15, 15a...Brake lever, 23...
brake lobe.

Claims (3)

[Claims] (1) In a spacecraft for overhead power line work that carries a worker and travels over the overhead power lines to carry out work such as maintenance and inspection of the overhead power lines, the seat of the body of the spacecraft is suspended from the overhead wires. The frame is equipped with two sets of left and right crawler devices consisting of a caterpillar-type rubber belt that rolls on overhead electric wires and a plurality of rollers on which the caterpillar-type rubber belts are suspended. A caterpillar-type aerial vehicle characterized by a configuration that distributes the load evenly. (2) In the caterpillar type spacecraft according to claim 1,
A caterpillar characterized in that a plurality of belt-hanging rollers in two sets of left and right crawler devices are not fixed integrally, but are provided with a roller support plate structure in which the rollers move up and down in accordance with the catenary angle of an overhead electric wire. Type spacecraft. (3) In the caterpillar type spacecraft according to claim 1,
A caterpillar-type spacecraft characterized in that the brake device installed on the spacecraft body is a foot-operated disc brake device that applies braking to a belt-hung roller of a crawler device.