JPH039685B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention provides come-along transportation on overhead power lines,
This invention relates to a self-propelled come-along that is pushed by a self-propelled vehicle positioned behind the come-along in the direction of travel.

(Prior Art) FIG. 3 shows a partially sectional side view of an example of a conventional come-along. In the drawing, 21
The come-along main body has a cylindrical shape, and the inner surface 22 is partially tapered. 23 is a wedge, and the wedge 23 has a two-part structure and is inserted into the inner surface of the come-along main body 21, and the wire gripping hole formed on the mating surface of the wedge 23 becomes smaller in diameter as the wedge 23 is inserted deeper, tightening the wire. It is something. 24 is a pin,
The handle 25 is arranged so that the end surface of the cam mechanism 26 formed at one end of the handle 25 at the protrusion 21' from the main body 21 faces the head end surface of the wedge 23.
and the main body 21 are connected. The cam mechanism 26 is bifurcated at the hand end of the handle 25, and the electric wire is configured to pass between the two.

The come-along main body 21 is configured to be able to be opened and closed in a hinged manner.
When the main body 21 is closed, the main body 21 is held by the electric wire and can be slid over the electric wire. When the tension wire attached to one end of the handle 25 is pulled with a winch or the like, the handle 25 rotates around the connecting pin 24'.
The end face of a cam mechanism 26 formed at the end of the handle presses the head end face of the wedge 23 facing opposite to each other with the electric wire in between, pushing the wedge 23 into the inner surface of the main body 21, so that the wedge 23 stably holds the electric wire.

(Problem to be solved) Although the wires are grasped by the come-along at a certain distance from the tower, it is a dangerous task to manually slide the come-along over the wires to that position. It is. Furthermore, since the come-along is quite heavy, there is a lot of friction between the wire and the wedge, and it requires a lot of effort.

For this reason, a self-propelled vehicle running on the electric wire is positioned behind the come-along in the direction of travel, and the self-propelled vehicle backs up the come-along, transports it to a predetermined position, stops it, and recovers only the self-propelled vehicle. A method of tightening the lines is being considered.

However, as mentioned above, come-along performs tensioning work by pulling the tensioning wire attached to the handle attached to the main body using a winch on the ground.
The dead weight of this tensioning wire and the tensioning semi-metal wheel through which the wire passes is applied to the come-along.
When the weight of the tension wire and semi-metal wheel is added to the come-along, the friction between the wedge of the come-along and the electric wire increases, resulting in an increase in the pushing force of the self-propelled vehicle and damage to the electric wire. There is a problem.

(Means for Solving the Problems) The present invention solves the above-mentioned problems and provides a self-propelled come-along configured to leave the dead weight of the tension wire and its semi-metal wheel on a self-propelled vehicle. in,
Its features include a semi-metal wheel attached to the tip of the handle attached to the come-along body, and a tension wire passing through the metal wheel via a connecting fitting fitted into an opening provided at the lower front of the self-propelled vehicle. This is because the vehicle is configured to be left in a self-propelled vehicle.

(Embodiment) FIG. 1 is a partially cutaway external view of an embodiment of the self-propelled come-along of the present invention, and FIG. 2 is an explanatory diagram of a tensioning method using the self-propelled come-along of FIG. 1.

In the drawing, 1 is a come-along main body that can be opened and closed in a hinged manner, and has a tapered groove inside into which a two-part wedge is inserted. By inserting it into the tapered groove, the come-along main body 1 is held on the overhead electric wire A and can be slid over the electric wire.
1-1 is a handle attached to the come-along body 1,
Conventionally, the tensioning action is performed by pulling the tensioning wire passing through the tensioning wire metal wheel attached to the tip part 1-2 with a winch or the like installed on the ground, but in the present invention, The tip end 1-2 of -1 is fitted onto the connecting pin 4-2 of the connecting hardware 4, and in the state shown in the figure it is floating in the air without being pulled. Further, 1-3 is a lever for attaching and detaching a wedge inserted into the come-along body 1;
The wedge can be attached and detached by manipulating the wire 1-4 tied to the tip of the wedge.

2 is located behind the come-along body 1 of the self-propelled vehicle in the traveling direction (→ mark), and is connected to the power cable 8 (second
The come-along main body 1 is propelled by the driving force supplied by the come-along (see figure) on the overhead electric wire A, and the push rod 2-1 moves the come-along main body 1 to a predetermined position in the direction of the arrow.
At the lower front of the self-propelled vehicle 2 is a receiving part 2 having an opening.
-2 is provided, and the head of the connecting hardware 4 is located in this receiving portion 2-2. This connection hardware 4
has a U-shaped lower part, and a hook metal fitting 5 provided on the head of a semi-metal wheel 3 through which a tension wire 6 (see Fig. 2) passes through a connecting pin 4-2, and the aforementioned handle 1-1. The tip portion 1-2 of is fitted. Therefore, in the state shown in the figure, all the weight of the tension wire 6 and the semi-metal wheel 3 is transferred to the self-propelled vehicle 2 via the connecting hardware 4, and these weights are not added to the come-along main body 1. .

Next, the tension line construction method using the self-propelled come-along construction method of the present invention will be explained using FIG. The self-propelled vehicle 2 travels on the overhead electric wire A by the driving force supplied by the power cable 8, presses the come-along main body 1, moves to a predetermined position on the overhead electric wire A, and stops. After that, only the self-propelled vehicle 2 is reversed and recovered, but at this time, the head 4-1 of the connecting hardware 4 comes off from the opening of the receiving part 2-2 provided at the lower front of the self-propelled vehicle 2, and the come-along body The handle 1-1 of 1 and the hook metal fitting 5 provided on the head of the semi-metal wheel 3 connect to the connecting pin 4-
2, but on the other hand, the connection hardware 4
is in a state of play. In this state, by pulling the tip 9 of the tension wire 6 with a winch or the like installed on the ground, a wedge is pushed in by the cam mechanism on the come-along body 1 side of the handle 1-1, and the overhead wire A is stably gripped. The situation is tense.

In FIG. 2, reference numeral 7 indicates a flying wheel for the wire tensioning wire 6, 10 indicates a steel tower, 11 indicates an insulator, and 12 indicates a wire tensioning wheel.

(Effects of the Invention) According to the above-described self-propelled come-along of the present invention, when the self-propelled vehicle runs while pressing the come-along main body, the weight of the tension wire and semi-metal wheel is deposited on the connecting hardware. , the weight of the come-along can be reduced, the friction between the wire and the wedge can be minimized, and damage to the wire is reduced.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway external view of an embodiment of the self-propelled come-along of the present invention, Fig. 2 is an explanatory diagram of the tension line construction method using the self-propelled come-along of Fig. 1, and Fig. 3 is a conventional A side view showing a partial cross section of an example of a come-along is shown. A... Overhead wire, 1... Come-along body, 1
-1...Handle, 1-2...Handle tip, 2...Self-propelled vehicle, 2-2...Receptacle with opening, 3...
Semi-metal wheel for tension line, 4... Connection hardware, 5... Hook metal fittings, 6... Wire for tension line.

Claims (1)

[Claims] 1 A semi-metallic wheel that is equipped with a come-along main body through which an overhead electric wire is inserted, and a self-propelled vehicle that is located behind the come-along in the direction of movement and runs on the overhead electric wire by pressing the come-along main body, and is attached to the tip of the handle attached to the come-along main body. and a self-propelled type, characterized in that the dead weight of the tension wire passing through the metal wheel is deposited on the self-propelled vehicle via a connecting fitting fitted into an opening provided at the lower front of the self-propelled vehicle. Come along.