JPH0472446B2 - - Google Patents

Description

[Detailed Description of the Invention] <Field of Application of the Invention> The present invention relates to a self-propelled wire extension device, especially a self-propelled wire extension device in a condition where electric lines are congested and there is not much space between upper and lower electric lines. Concerning self-propelled line extension equipment that is ideal for lines.

<Prior Art> A typical example of a conventional self-propelled wire extending machine will be described below with reference to FIGS. 6 and 7.

That is, this self-propelled wire extending machine 1 includes a drive wheel 2 on the upper side and a body part 3 on the lower side in which a drive motor, a drive mechanism, a drive power source, etc. (not shown) are installed. and is suspended from a messenger wire 4 (this messenger wire 4 may be an existing electric wire or a wire temporarily installed for that purpose) via a drive wheel 2, While running on it, the fuselage part 3
The electric wire 6 is connected via the wire extension rope 5 appropriately connected to the
This involves extending the line and deploying a hanging metal car.

<Problem to be solved by the invention> However, as shown in Fig. 7, under conditions where the electric lines are congested and there is not much space between the upper and lower electric lines, such extension In the case of a self-propelled vehicle 1, a drive motor, a drive transmission mechanism, a drive power source, etc. are installed inside the body part 3, which necessarily requires a certain size. This results in interference as shown by the imaginary line in Figure 7, and in the end it becomes unusable.

Therefore, the present invention aims to provide a self-propelled wire extending machine that can be easily used even under conditions where the electric lines are congested and there is not much space between the upper and lower electric lines.

<Means for solving the problem> Specifically, multiple driving functional components, including a drive motor, a drive transmission mechanism, and a drive power source, are distributed and attached to each side so that the weight is evenly balanced. A self-propelled wire extending machine that has a pair of body parts and a crotch part between the pair of left and right body parts that straddles the electric wire below while suspended from the messenger wire. This is what we provide.

<Function> That is, when there is an existing electric wire below, since the crotch portion straddles the existing electric wire, interference with this electric wire can be avoided.

<Example> Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 5. Note that the same reference numerals are given to parts that are common to those described in relation to the prior art, and redundant explanations will be omitted.

This self-propelled wire extending machine 10 has a pair of left and right body parts 1.
1 and 12, and this pair of left and right body parts 1
A crotch part 13 is provided between 1 and 12, and a pair of drive wheels 14 and 14 are provided above the crotch part 13 in tandem in the self-running direction (direction of arrow A).

Each drive wheel 14 has a pair of annular wheel pieces 17 each having an inclined surface 16.
6 and 16 are combined to form a single annular wheel groove 18, and both wheel pieces 1
The width W of the wheel groove 18 can be adjusted by adjusting the distance between the wheels 7 and 17. Further, the intersecting angle α between both inclined surfaces 16, 16, that is, the angle α of the wheel groove 18 is 60°, and the contact angle β with the messenger wire 4, that is, the angle α between the messenger wire 4 and both inclined surfaces 16, 16 is set to 60°. The angle β between the normal line drawn from the contact point P to the center of the messenger wire 4 and a line segment perpendicular to the rotational center line S of the drive wheel 14 is 60°. The reason why the contact angle β was set to 60° was that it was found through repeated experiments that the maximum frictional force, that is, the driving force (traction force) could be obtained at this angle. In addition, the width W of the wheel groove 18
The reason for this is that by adjusting the width W, the contact point P can always be positioned at a constant distance L from the rotation center line S of the drive wheel 14, even if the diameter R of the messenger wire 4 is different. This is to ensure that the free running speed caused by the torque of the drive wheel 14 and the rotation of the drive wheel 14 is constant, so that a stable running state can always be obtained.

In addition, the right body section 11 in FIG. 1 mainly includes a drive motor 20 and a drive transmission mechanism 21, and the left body section 12 mainly includes a battery 22 as a drive power source and an operation switch. are distributed and installed so that the weight on the left and right sides is balanced.

Furthermore, as shown in FIGS. 1 to 3, a hanging ring 23 is provided at the bottom of each body part 11, 12, and an auxiliary rope 24 is passed between the pair of hanging rings 23, 23. The electric wire 6 below the wire-running machine 10 is held in place to prevent the wire-running machine 10 from derailing or falling, and the auxiliary rope 24 is used for connecting the wire-running rope. Additionally, as shown in Figures 1 and 2, a switch arm 25 for emergency stop is provided, and if there is an obstacle, the switch arm 25 will automatically stop when it comes into contact with the obstacle. .

Hereinafter, the usage condition of this self-propelled wire extending machine 10 will be explained.

First, the messenger wire 4 is suspended via the drive wheels 14, 14. At that time, the width W of the wheel groove 18 is adjusted according to the thickness (diameter R) of the messenger wire 4, and the contact point P is at a predetermined position (this position can be easily recognized by marking, for example). (Figure 5). Further, if there is an existing electric wire 6 below, the electric wire 6 is straddled at the crotch part 13 to avoid interference therebetween. Next, the auxiliary rope 24
is passed between the hanging rings 23, 23, and this auxiliary rope 2
Connect the wire extension rope 5 to 4. Then, the start switch 26 is turned on, and the line is run automatically.

In this way, in this self-propelled wire extending machine 10, the crotch part 13 is provided, and when there is an existing electric wire 6 below, this electric wire 6 is straddled by the crotch part 13, so that this electric wire 6 and It can be easily used even in conditions where the electric lines are congested and there is not much space between the upper and lower electric lines.

In addition, since this self-propelled wire extending machine 10 has the drive structure as described above, ● the drive wheel 14 type is used, which has a relatively simple structure and is lightweight; ● this drive wheel 14 is , a pair of wheel pieces 1
The wheel groove 18 is formed on both inclined surfaces 16 and 17 of 7 and 17, and at the same time, the width W of the wheel groove 18 is made adjustable, so that the contact point P is always It is possible to position the drive wheel 14 at a constant position from the rotation center line S, and the torque of the drive wheel 14 and the self-running speed caused by the rotation of the drive wheel 14 are constant, so that a stable running condition can always be obtained. ●Furthermore, the angle α of the wheel groove 18 is 60°,
The contact angle β of the messenger wire 4 can be set to 60°, which can obtain the maximum frictional force, and together with this, it is possible to achieve the requirements of a self-propelled wire stretching machine (a). It is possible to satisfy the following requirements in a well-balanced manner: (b) the traction force is as large as possible, and (c) stable running conditions can be obtained regardless of the thickness of the messenger wire. .

<Effects of the Invention> As explained above, the self-propelled wire extending machine according to the present invention has a pair of left and right body parts, a crotch part between the body parts, and when there is an electric wire below, Since this wire can be straddled between the crotches, interference with the wires below can be avoided, making it easy to use even in conditions where the wires are congested and there is not much space between the wires above and below. It has an excellent effect.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of a self-propelled wire drawing machine according to the present invention, FIG. 2 is a schematic plan view seen from the direction of the arrow in FIG. 1, and FIG. 4 is a schematic side view seen from the direction indicated by the arrow in FIG. 1, FIG. 5 is a schematic side view showing the relationship between the drive wheel and the messenger wire, and FIG. This figure is a schematic side view of a conventional self-propelled wire extending machine, and FIG. 7 is an explanatory diagram of an electric line. 1, 10... Self-propelled wire extension device, 11, 12... Body part, 13... Crotch part, 20... Drive motor,
21... Drive transmission mechanism, 22... Battery.

Claims (1)

[Claims] 1. It has a pair of left and right body parts, each of which has a plurality of driving functional members, including a drive motor, a drive transmission mechanism, and a drive power source, distributed and attached to each part so as to have an even weight balance, and A self-propelled wire extending device that has a crotch section between the body sections that straddles the electric wire below while suspended from the messenger wire.