JPH0724888Y2 - Aerial machine for overhead lines - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is used when an operator rides on an overhead power transmission line or an overhead ground wire and sequentially moves on the electric wire during maintenance and inspection. It concerns the improvement of airborne vehicles.

[Prior Art] An electric wire is damaged and deteriorated due to various causes such as external damage caused by shooting of a hunting gun, damage due to lightning damage, and progress of corrosion of the electric wire itself. It is difficult to detect the condition of damage and deterioration of the electric wire connected to the ground simply by observing it on the ground. Therefore, it is often necessary for an operator to directly inspect the electric wire while directly traveling on the electric wire using an airborne machine and repair the abnormal portion in some cases.

FIG. 9 shows the structure of a conventional airborne vehicle used for such maintenance and inspection.
The metal wheels 21, 21 capable of traveling on the electric wire 30 are attached to the wire 20, the stool 5'is installed on the support 6 ', and the worker rides on the stool 5'and grips and moves the electric wire 30 by his / her arm force. While checking the abnormal condition of the electric wire 30. Reference numeral 22 denotes a brake, which obtains a braking force by bringing a rubber pad at the tip end into contact with and slides on the electric wire 30 to prevent braking on a downward slope or reverse movement on an upward slope.

In the aerial vehicle constructed as described above, there is no problem as long as the target electric wire is a stranded wire having an ordinary circular cross section. However, in recent years, fin-shaped projections 31 are formed on the outer circumference of the electric wire 30 as shown in FIG. 10 or the electric wire as shown in FIG. Many examples have been found in which plastic rings 32, 32 are attached to the outer periphery of 30 at predetermined intervals.

In this way, the fin-like protrusions 31 or the rings 32, 32 are formed on the outer surface.
When an airborne vehicle such as that shown in FIG. 9 is run on the electric wire 30 having the above, the traveling wheels may deform or damage the convex portion of the electric wire. May result in loss of intended function.
Further, when the brake 22 of the airborne vehicle as shown in FIG. 9 is applied to the electric wire in the downward slope or the upward slope, a large pressure is applied to the electric wire in order to obtain the frictional force due to the sliding. The rubber pad is abraded due to the convex portions of, and the braking force may be adversely affected. In addition, in the case of the electric wire to which the plastic ring is attached, the ring may be detached or damaged by the brake 22 when the brake 22 is operated.

[Problems to be Solved by the Invention] In order to solve the above problems, even if the fins are moved or braked on an electric wire having fins or rings on the outer surface, these fins Or, it is necessary to have an aerial vehicle that allows smooth running without adversely affecting the ring.

In addition, the airborne structure with the above-mentioned structure is not a problem as long as it is suspended vertically, but when an operator gets on board and enters a working state, the weight imbalance of the passenger and wind pressure As a result, the entire airborne vehicle is tilted.

If this inclination occurs, smooth running on the electric wire of the airborne vehicle may be hindered, and the original function of the airborne vehicle may be impaired.

The object of the present invention is to solve the above-mentioned problems of the prior art, and even if the fins or rings are moved or braked on an electric wire having fins or rings on the outer surface thereof, the fins or rings are not moved. It is an object of the present invention to provide an overhead line airborne vehicle which can be smoothly driven without adversely affecting the vehicle and can always maintain a smooth running state even if the airborne vehicle is tilted.

[Means for Solving the Problems] The present invention has a structure in which a traveling part that travels on an electric wire is not driven by metal wheels but by, for example, a rubber-made caterpillar, and a rotary driving body that rotationally drives the caterpillar. In an overhead line airborne vehicle provided with a braking mechanism, the above airborne vehicle is provided with a rotation support mechanism such as a bearing which is disposed on both sides of the airborne vehicle in parallel with the electric wire and which supports the caterpillar from the back side. It is configured such that it has an opening angle toward the lower inside of the airborne vehicle rather than the horizontal state.

[Operation] If the rubber caterpillar is rotated and moved, the pressing force applied to the surface of the electric wire can be widely dispersed, and the risk of damage to the electric wire can be eliminated, while a separate braking mechanism is provided on the drive unit of the caterpillar. By providing the brake, it is possible to eliminate the possibility that the brake may damage the outer surface of the electric wire or the brake itself.

Further, the supporting surface of the rotation support mechanism has an opening angle toward the lower inner side of the air vehicle (when viewed from the rear surface of the caterpillar supported by the supporting surface, the rear surface faces the upper outer side of the air vehicle). When the airborne vehicle tilts and the electric wire tries to move toward the side plate, a component force is generated in the electric wire toward the center of the track, and this component force causes the electric wire to move. Can be held at the center position of the caterpillar, and smooth running is always maintained.

[Embodiment] First, although not the embodiment itself of the present invention, an aerial vehicle using a caterpillar made of an elastic material such as rubber having some of the constituent features of the present invention will be described with reference to the drawings.

FIG. 1 is a front view showing an example of the above-mentioned airborne vehicle, FIG. 2 is a side view thereof, FIG. 3 is a front view showing another example, and FIG. 4 is a side view thereof.

In each figure, 1 is a rubber-tipped caterpillar made of urethane rubber or the like (this may be any material having appropriate elasticity and strength), and the central portion is formed in a valley shape so that the electric wire 30 is covered. It is configured to run and move without falling off. 2 is a metal side plate holding the caterpillar 1, and 3 is an electric wire attached to the side plate.
An electric wire holding wheel for holding 30 from below the caterpillar 1 to maintain the traveling state of the caterpillar 1 in a more stable state.

Further, in each of the drawings, reference numeral 4 is a drive handle for applying a rotational drive force to the caterpillar 1. Handle 4
The drive force of the drive shaft 4c is configured to be connectable to a drive mechanism that applies a rotational drive force to the caterpillar 1. For example, when the handle 4 is moved in the forward direction 4'as shown in FIG.
The gear with ratchet of the caterpillar drive mechanism is rotated via (see FIG. 4), and for example, a sprocket that gives a rotational force to the caterpillar 1 is rotationally driven to advance the airborne vehicle,
When the handle 4 is returned to its original position, only the drive shaft 4c is configured to idle.

Therefore, it is more efficient to apply the driving force by the handle 4 by using the flexible shaft 4b shown in FIGS. That is, a gear box 4a is provided at the end of the stool 5 on which an operator rides, and the handle 4 is connected to the gear box 4a, while the gear box 4a and the drive mechanism of the caterpillar 1 are themselves flexible. The flexible shaft 4b, which is flexible and capable of transmitting the rotational force, is connected as shown in the figure. With this configuration, the operator can operate the handle 4 on the side as it is while sitting down, and the driving force obtained by the handle operation is transmitted to the flexible shaft 4b so that the other end of the flexible shaft is By driving the caterpillar drive mechanism connected thereto, the operator can give rotational drive to the caterpillar while sitting down.

In order to stabilize the body of the worker, a back band 6a is attached to the support body 6 as shown in FIG. 2 so that the back band 6a can firmly support the worker on the aerial vehicle. Good to do.

Reference numeral 7 is a foot board which is suspended by a mounting piece 8 at a position where it is convenient for an operator to rest his / her feet on the waist board 5, and 9 is a foot brake. By operating the foot brake 9, the braking force is transmitted through a braking force transmission body 9a (FIG. 3) formed of a wire or a hydraulic hose so as to apply the braking force to the rotating portion of the caterpillar drive portion. Is composed of. Therefore, as the most preferable mode of the brake in that case, it is desirable that the sprocket is provided with a disc brake and the sprocket is braked by the disc brake. However, this braking mechanism is not limited to the disc brake, and it is also possible to adopt a configuration in which braking is performed by an appropriate means such as a band brake, if necessary.

As described above, the braking mechanism of the airborne vehicle provided with some of the constituent features of the present invention does not depend on the frictional force with the electric wire as in the conventional example, and does not depend on the rotating body itself that rotationally drives the caterpillar. Since it is configured to have a braking function, there is no risk of damage to the outer surface of the wire or damage to the brake itself even when the wire has a protrusion on the outer surface.

Further, since the above-mentioned airborne machine has a configuration in which a rubber-tipped caterpillar is provided in a portion which is driven by contacting an electric wire as described above, the surface pressure on the electric wire is largely averaged as compared with the metal wheel of the conventional example. Since no local pressing force is generated, there is no possibility of damaging the outer surface of the wire due to traveling of the air vehicle. In addition, a large frictional force may be generated between the electric wire and the caterpillar, and even if the electric wire has a large inclination of, for example, about 35 °, there is a risk that the airborne vehicle may run over and fall on the electric wire. There is no.

FIG. 8 is a diagram for explaining in more detail the structure in the vicinity of the caterpillar 1 in the airborne vehicle.

10 is a back metal plate that reinforces the caterpillar 1 from the back,
Reference numeral 11 is a bearing attached to the lower portion of the side plate 2, and the bearings 11 and 11 are the lower portion in the traveling direction of the airborne vehicle and the electric wire 30.
Are arranged at positions on both sides of the caterpillar, and constitute a rotation support mechanism similar to that in a caterpillar of a tank, and smooth the rotation progress of the caterpillar 1 on the electric wire 30.

13 is the sprocket already explained, 14 is the sprocket 13
The reference numeral 15 denotes a rotary shaft, 15 is a chain for engaging the sprocket 13 with a rotational force to the caterpillar 1, and 16 is a skidder made of a fluororesin or the like for supporting the upper side of the caterpillar 1 and slidingly guiding it.

The airborne vehicle configured as described above is self-propelled at the downward slope of the electric wire, is rowed at the horizontal portion, and is allowed to travel by using the handle 4 at the upward slope, so that the surface is ringed as already described in detail. It can run very smoothly even on an electric wire with a spiral protrusion.

However, the above-mentioned traveling is not a problem as long as the airborne vehicle is suspended vertically, but when an operator gets on the vehicle and enters a working state, the influence of the imbalance of the weight of the passenger and the wind pressure may occur. In many cases, the airborne vehicle receives a tilt.

When this inclination occurs, the electric wire 30 tries to move toward the side plate 2 due to the unbalanced load, and the reaction force causes the caterpillar 1 to come into contact with the inner surface of the side plate 2 to increase the friction resistance, and the electric wire of the airborne vehicle. As a result, smooth running on the upper side is hindered, and the above-mentioned original function of the air vehicle is impaired.

On the other hand, the airborne vehicle according to the present invention has a special configuration for preventing such a problem. FIG. 5 is a diagram showing one embodiment of the airborne vehicle according to the present invention (a diagram showing the configuration in the vicinity of the caterpillar), and the configuration other than that shown in FIG. 1 to FIG. 4 or FIG. It is the same as the one.
As shown in the figure, the airborne machine of this embodiment is a bearing box.
12 (not in a limiting sense), the bearing box 12 is mounted such that it is not parallel to the plane of the side plate 2 but has an opening angle that opens upwards and outwards, so that the bearing surface of the bearing 11 is also Instead of the horizontal plane shown in FIG. 8, it is configured to have an opening angle toward the lower inner side,
The supporting surface itself is arranged so as to form a part of one arc surface extending to the left and right in the figure.

This opening angle does not have to be large, and according to the results of actual experiments, the angle of about 10 ° is formed on the left and right in the figure, which causes It is possible to prevent the caterpillar 1 from being pressed against the inner surface of the side plate 2 by the force and causing frictional resistance.

6 and 7 are explanatory views showing a state in which the airborne vehicle according to the present invention traveling on the electric wire 30 is tilted by the tilt angle θ.

Even if this inclination angle θ is generated, the inclination is usually within 10 °, and even if such an inclination is generated, in the airborne machine having the above-described configuration, the reaction force of the electric wire 30 causes the component force toward the center of the caterpillar 1. Occurs, the action of holding the electric wire 30 in the center position of the groove of the caterpillar 1 occurs, and as described above, the situation in which the caterpillar 1 is pressed against the inner surface of the side plate 2 due to the reaction force of the electric wire and friction is avoided, If possible to run smoothly.

By the way, in the aerial vehicle shown in FIGS. 1 to 4 having a part of the constitutional requirements of the present invention, the electric wire 30 and the aerial vehicle main body are obtained as a result of the traveling portion being constituted by the rubber-lined caterpillar 1. Insulated from the part. Therefore, if an inductive voltage is generated in the electric wire 30 while the electric wire 30 is traveling, a shock may be given to an onboard operator. In FIGS. 1 and 3, reference numeral 2a is a so-called ground roller provided to electrically connect the electric wire 30 and the side plate 2 in order to prevent such a shock, whereby the airborne body and the electric wire are separated from each other. The potential is held at the same potential, eliminating the risk of shock.

Further, the driving force for movement in the airborne vehicle is not limited to the rotation force imparted by the lever-type handle 4 and the sprocket or ratchet, but is forwarded by rotating, for example, a rotating handle that rotates in the circumferential direction. Alternatively, there is no problem even if the mechanism is configured to retract, and in some cases, various design changes can be made to this drive source, such as addition of power drive.

[Effects of the Invention] As described above, the airborne vehicle according to the present invention can achieve the following excellent effects.

(1) Since the running portion is composed of, for example, a rubber caterpillar, the surface pressure per unit of the electric wire is reduced and the pressing force is widely and evenly distributed. As a result, a convex portion is formed on the surface of the electric wire. Even in such a case, there is no possibility of damaging or deforming the convex portion.

(2) By providing an opening angle toward the lower inside of the rotation support surface, there is no risk of running resistance even when the airborne vehicle is tilted, and smooth running is always ensured, which is an excellent feature of the caterpillar system. The advantages can be fully exerted.

(3) Since the brake does not depend on the sliding frictional force with the electric wire and a braking mechanism of, for example, a disc brake system is provided on the drive rotating shaft, it is not necessary to slide the electric wire surface by the brake, and the electric wire surface for braking is The damage or damage to the brake itself is eliminated, and the braking force and the traveling speed can be adjusted accordingly.

(4) By using the caterpillar traveling method using rubber, etc., traveling is facilitated, and moreover, the large frictional force with the electric wire can prevent slipping at a steep slope, that is, runaway. You can train them.

[Brief description of drawings]

FIG. 1 is a front view showing an example of an airborne vehicle using a caterpillar made of an elastic material such as rubber having some of the constituent features of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. Is a front view of another example of an airborne vehicle using a caterpillar also made of an elastic material such as rubber, FIG. 4 is a side view thereof, and FIG. 5 is a diagram showing a configuration in the vicinity of the caterpillar of an embodiment according to the present invention. FIGS. 6 and 7 are explanatory views showing a situation in which the airborne vehicle according to the present invention is tilted, and FIG. 8 shows a configuration in the vicinity of the caterpillar of the airborne vehicle provided with some of the constituent requirements of the present invention. FIG. 9 is a front view showing a conventional air vehicle, FIG. 10 is an explanatory sketch of an electric wire having a fin-shaped projection on the outer circumference, and FIG. 11 is a front sketch of an electric wire having a ring on the outer circumference. 1: Rubber-lined caterpillar, 2: Side plate, 2a: Ground roller, 4:
Drive handle, 4b: Flexible shaft, 5: Waist plate, 7: Footboard, 9: Foot brake, 10: Rear metal plate, 11:
Bearing, 12: Bearing box, 30: Electric wire.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Koichi Ogura, 1500 Kawajiri-cho, Hitachi-shi, Ibaraki Hitachi Cable Co., Ltd.Toyoura factory (72) Creator Akira Takahata 1500 Kawajiri-cho, Hitachi-shi, Ibaraki Hitachi Cable Co., Ltd. Toyoura Plant (56) References JP 64-5315 (JP, A) JP 60-42685 (JP, B2) JP 58-25002 (JP, B2) JP 50-39837 (JP, B2) Actual public Sho-59-32170 (JP, Y2)

Claims (4)

[Scope of utility model registration request] 1. A caterpillar made of an elastic material such as rubber capable of traveling on an electric wire, a rotating mechanism for giving a driving force to the caterpillar, and a braking mechanism for giving a braking force to a rotating body giving a driving force to the caterpillar. In the overhead line airborne vehicle having the above, the rotating caterpillar has a rotation supporting mechanism such as a bearing that supports it from the rear surface at both side positions parallel to the electric wire, and the rotation supporting mechanisms on both sides are An aerial vehicle for overhead lines, the supporting surface of which is configured to have an opening angle toward the lower inside of the aerial vehicle. 2. An aerial vehicle for overhead wire according to claim 1, wherein the braking mechanism is a disc brake for braking a plate-shaped rotating body provided on the drive shaft. 3. The overhead line airborne machine according to claim 1, wherein the driving force of the caterpillar is applied by a lever type manual handle connected to a sprocket. 4. An electric connection mechanism for keeping the human body riding section at the same potential as the electric wire in the airborne machine.
4. An overhead line airborne flight according to any one of 3 to 3.