JPH0731021A - Spacer passing suspension wheel for double conductor transmission line - Google Patents

Abstract

PURPOSE:To provide a spacer passing suspension wheel for double conductor transmission line in which the stability is enhanced when a spacer is passed over while reducing the hauling force. CONSTITUTION:The suspension wheel comprises more than two running wheels 4 rolling on each wire 1 of a double conductor transmission line, and a wheel 11 for guiding a pilot rope 12 when a new wire is stretched. The suspension wheel further comprises mechanisms 5A, 5B for holding the running wheels 4 on a circular track at an equal interval and passing the running wheel 4 over a spacer 2 while revolving, and a frame 6 for holding the revolving shafts 7, 7 of the revolving mechanisms 5A, 5B while shifting by one half of the diameter of revolution or more in the running direction and holding the guide wheel 11 lower than the revolving mechanisms 5A, 5B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spacer passing type hanging vehicle for a double conductor transmission line.

[0002]

2. Description of the Related Art A method of extending a new electric wire by using an existing electric wire is used when replacing a power transmission line or constructing an extension. In this construction method, a hanging wagon is used in which a wheel traveling on an existing electric wire and a wheel for guiding a pilot rope for extending a new electric wire are integrated by a frame or the like.

By the way, since dampers and spacers are usually attached to the existing electric wires, these become obstacles when the wheels run. Therefore, before deploying the hanging wagon, a worker rides on the electric wires to remove them, and then recovers them after collecting the hanging wagon. However, the work of removing the dampers and spacers before deploying the hanging wagon is a work carried out by hanging on the electric wire, and therefore there are many risk factors and the work time is long.

Therefore, in order to solve the above problem, the present applicant has three or more running wheels that can roll on an existing electric wire and a guide wheel that guides a pilot rope for extending a new electric wire. First, I applied for a suspension rail car in which the running wheels are arranged at equal intervals on a circular track and the running wheels revolve when the running wheels come into contact with an obstacle on an existing electric wire. Unpublished).

[0005]

By the way, in the case where the existing electric wire is a parallel double conductor, there may be a sling wagon equipped with a pair of orbitable running wheels rolling on both electric wires. In this case, when the hanging wheel approaches a spacer installed between both electric wires at an appropriate interval, the left and right traveling wheels revolve at the same time to get over the spacer.

However, in the above hanging car, there is no problem when both electric wires are always aligned horizontally, but when they are misaligned due to cross wind or vibration, the left and right running wheels revolve at the same time. When the number of left and right ones has started, it becomes an unstable state in which it tends to slip in the inclination direction, increasing the risk of derailing. In addition, a large traction force is required to orbit the left and right running wheels at the same time.

Therefore, an object of the present invention is to provide a spacer passing type hanging vehicle for a multi-conductor power transmission line, which has improved stability and reduced traction force when getting over a spacer.

[0008]

In order to achieve the above object, a spacer passing type hanging vehicle for a multi-conductor power transmission line according to the present invention has three or more running lines capable of rolling on each wire of the multi-conductor power transmission line. A suspension wheel having a wheel and a guide wheel for guiding a pilot rope for extending a new electric wire, wherein the running wheels are held at equal intervals on a circular track and rolling running wheels are spacers on the wires. The orbiting mechanism for revolving when it abuts against the vehicle and the orbiting shafts of the left and right orbiting mechanisms are displaced by 1/2 or more of the orbital diameter in the traveling direction and are held, and the guide wheels are placed below these orbiting mechanisms. It is characterized by having a frame for holding.

[0009]

According to the above construction, the suspension wagon travels on the multi-conductor power transmission line by two traveling wheels in the left and right revolution mechanisms, and when it approaches the spacer, the revolution shafts of the left and right revolution mechanisms move in the traveling direction. Since the diameter of the orbit is displaced by more than 1/2 of the diameter of the orbit, the left and right orbital revolution mechanisms revolve with a time difference. Specifically, the revolution mechanism in the front starts to revolve and
Even if it becomes individual, the number of running wheels of the rear revolution mechanism remains two. Therefore, even if the multi-conductor power transmission lines are not aligned due to cross wind, vibration, etc., the suspension wagon can pass through the spacer in a stable state. Further, since the left and right revolving mechanisms can be revolved alternately, the traction force required is 1/2 as compared with the case where the left and right revolving mechanisms are revolved at the same time, and the traction force can be reduced.

[0010]

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a multi-conductor transmission line which is an existing electric wire, and spacers 2 are attached between the electric wires 1 and 1 on the left and right at appropriate intervals. The hanging wire car 3 traveling over these electric wires 1 and 1 has a pair of revolution mechanisms 5A and 5B having a plurality of traveling wheels 4 that can roll on the electric wires 1.
Both revolving mechanisms 5A and 5B are rotatably held on the left and right upper ends of a U-shaped frame 6 that surrounds the outer sides of both electric wires 1 and 1.

Each of the revolution mechanisms 5A and 5B is mounted on the upper end of the frame 6 so as to extend horizontally in a direction traversing the electric wire 1, and a revolution shaft 7 which is rotatably attached to the revolution shaft 7 and has a central angle of 90 degrees. Each running wheel 4 is rotatably supported at the tip of each arm 8 that is formed by four arms 8 of equal length that radially extend at intervals. That is, in the embodiment, four traveling wheels 4 are arranged at equal intervals in the circumferential direction on a circular orbit centered on the revolution shaft 7 and having a radius of the substantial length of the arm 8.

In particular, the left and right revolution mechanisms 5A and 5B are held on the frame by shifting the revolution shafts 7 and 7 in the traveling direction by a distance S that is 1/2 or more of the revolution diameter (see FIG. 2), and the spacers 2 have a time difference. To get over.

A guide wheel 11 is suspended at the center of the lower end of the frame 6 through a suspension wire 9 and a support plate 10, and a pilot rope 12 is hung on the guide wheel 11. Further, the revolution shafts 7, 7 of the left and right revolution mechanisms 5A, 5B are connected to a connecting frame 13 which extends inward and extends in the traveling direction, and the hanging frame 3 is pulled by the connecting frame 13. Is connected to the tow rope 14.

Next, the operation of the above embodiment will be described. When carrying out the replacement or extension work of the transmission line using the existing electric wire, first, two traveling wheels 4 in the left and right revolution mechanisms 5A and 5B of the hanging car 3 are placed on the left and right electric wires 1 and 1, and Hang the pilot rope 12 on the guide wheel 11.
Then, by pulling the tow rope 14 in the traveling direction, the traveling wheel 4 rolls along the electric wire, the suspension wagon 3 travels, and the pilot rope 12 is extended.

When the hanging wheel 3 approaches the spacer 2 while traveling on the electric wires 1, 1 in this way, the revolution shafts 7, 7 of the left and right revolution mechanisms 5A, 5B have revolution diameters of 1 or less in the traveling direction. Since it is displaced by more than 1/2, first the revolution mechanism 5A in front
In the traveling direction, the traveling wheel 4a hits the spacer 2, and the revolution mechanism 5A rotates forward (revolves) around the traveling wheel 4a as a fulcrum. Due to the rotation of the revolving mechanism 5A, the adjacent traveling wheel 4b which is not engaged with the electric wire 1 straddles the spacer 2 and is settled on the electric wire 1 in front as shown by a virtual line in FIG. During this time, the rear revolution mechanism 5B has the spacer 2
The traveling wheel 4c is traveling on the electric wire 1 rearward of the spacer 2, and the traveling wheel 4c on the front side of the revolution mechanism 5B in the traveling direction is the spacer 2.
When the vehicle is in contact with the vehicle and rotates (revolves) forward with the traveling wheel 4c as a fulcrum, the traveling wheel 4a, which was the fulcrum in the front revolution mechanism 5A, passes over the spacer 2.

Thus, even if the front revolution mechanism 5A starts to revolve and the number of traveling wheels 4 becomes one, the rear revolution mechanism 5B does.
The number of running wheels 4 remains 2 and the rear revolution mechanism 5
Even if B starts to revolve and the number of traveling wheels 4 becomes one, the number of traveling wheels 4 of the front revolution mechanism 5S becomes two, so that the spacer 2
When passing over the vehicle, the three traveling wheels 4 are always engaged on the electric wires 1, 1. Therefore, the multi-conductor transmission line 1,
Even if 1 is not aligned due to cross wind, vibration, etc., the hanging wheel 3 can pass through the spacer 2 in a stable state. Further, since the left and right revolving mechanisms 5A and 5B may be revolved alternately, the traction force is half that in the case where the left and right revolving mechanisms 5A and 5B are revolved at the same time, and the traction force can be reduced. When the power transmission line has a long diameter, a plurality of suspension wagons are towed in series, but these suspension wagons can be easily deployed.

In the above embodiment, four traveling wheels 4 are shown, but at least three traveling wheels 4 may be used.

[0019]

In summary, according to the present invention, the following excellent effects are exhibited: (1) The revolution shafts of a pair of left and right revolution mechanisms traveling on a multiconductor power transmission line via traveling wheels are arranged in the traveling direction. Since it has been configured to be displaced by 1/2 or more of the revolution diameter, the left and right revolution mechanisms will revolve with a time difference, specifically, even if the front revolution mechanism starts revolving and one traveling wheel becomes one. Since the rear revolution mechanism has only two running wheels, even if the multi-conductor transmission line is misaligned due to cross wind, vibration, etc., the suspension car can pass through the spacer in a stable state. .

(2) Since the left and right revolving mechanisms can be revolved alternately when passing through the spacer, the traction force can be reduced to 1/2 as compared with the case where the left and right revolving mechanisms are simultaneously revolved, and the traction force can be reduced. .

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a spacer passing type hanging vehicle for a double conductor transmission line according to the present invention.

FIG. 2 is a schematic side view for explaining the movement of the gold wheel of FIG.

[Explanation of symbols]

 1 Wire 2 Spacer 3 Hanging Wagon 4 Running Wheel 5A, 5B Revolution Mechanism 6 Frame 7 Revolution Axis 11 Guide Wheel 12 Pilot Rope

Claims (1)

[Claims] 1. A rollable three conductor on each electric wire of a double conductor transmission line.
A hanging wheel having a guide wheel for guiding a pilot rope for extending a new electric wire or more running wheels, wherein the running wheels are kept rolling at equal intervals on a circular track. A revolution mechanism for revolving and getting over when it contacts a spacer on an electric wire, and the revolution shafts of the left and right revolution mechanisms are held while being displaced by ½ or more of the revolution diameter in the traveling direction, and the guide wheels are these revolution mechanisms. A spacer passing type hanging vehicle for a multi-conductor power transmission line, comprising a frame that is held below the frame.