JPS6339406A - Apparatus for fitting snow-proof ring - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an anti-snow ring attachment device for power transmission lines.

Snow that adheres to power lines in winter can potentially cut the power lines and cause power transmission towers to collapse, so it is necessary to take measures to prevent snow from accumulating. There is a technique called wearing a snow ring. The present invention relates to a device for fitting this ring onto an electric wire.

(Prior art) As shown in Figure 5 (a), snow adhering to a part of the electric wire (
B), (C), and (D) run along the wire while rotating along the grooves of the stranded wires that make up the wire, forming a snow pipe as shown in (E). Therefore, if appropriate rings are attached to the wires at regular intervals, the snow that adheres to the wires will not be able to rotate along the grooves of the stranded wires, and will not form snow pipes.

Such a ring is called a snow-resistant ring.

By the way, there are two ways to attach such anti-snow rings to electric wires: manually attaching them and using a self-propelled attaching machine.

To attach the anti-snow ring manually, as shown in Figure 6, hang the entry 50 on the power transmission i51, have the worker ride on it, and install the plastic anti-snow ring as shown in Figure 7. The snow ring is held one by one by the handle part 53 of a tool as shown in FIG. 8, and the ring is caulked with the tip part 54 of the tool.

In addition, in order to attach the anti-snow ring with a self-propelled attaching machine, please refer to the 9th
As shown in the diagram, power transmission line 5! An automatic ring mounting machine 55 is attached to the ring, and the automatic ring mounting machine 55 is self-propelled by air to automatically mount the ring. The air that makes this automatic mounting machine 55 run on its own is guided from an air compressor 56 placed at the base of the steel tower via an air hose.

(Problems to be Solved by the Invention) The method of manually installing anti-snow rings as described above requires a large number of rings. The current situation is that workers are required to attach the equipment every day, which causes severe muscle fatigue in the hands of workers, making it impossible to work continuously for three days.

In addition, with the method of attaching anti-snow rings using a self-propelled attaching machine, it is not possible to run backwards and return to the place where the ring has already been attached, so the air hose has to be retracted from the next steel tower that it ran to, or the compressor The disadvantage is that it takes time to move the hose and reconnect the hose.

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and to provide a lightweight, compact and handy type ring mounting device.

(Means for solving the problem) The second purpose is to extrude rings from a cassette containing a plurality of rings onto a power transmission line in a device for attaching anti-snow rings to existing power transmission lines. , and the tightening of the ring to the power transmission line is accomplished by mounting with an eccentric cam and adapting the variable load with an arbitrary cam shape.

Preferably, in the anti-snow ring attachment device, a pair of claws having opposing toes, a slide plate that supports the pair of claws and is movable in the vertical direction, and when actuated, the slide plate is moved in the vertical direction. a first eccentric cam that moves the first cam; a first driving source that operates the first cam; and a pair of first eccentric cams that, when activated, act on the pair of claws and press the tips of the claws toward each other. a second eccentric cam and a second drive source that operates the second cam; the first drive source operates the first cam to raise the slide plate; the claws of the cassette are adjacent to the ring located at the most distal end of the cassette, and the second driving source operates the pair of second cams in response to the pair of pawls being adjacent to the most distal ring of the cassette. The tip of the pair of claws is pressed in a direction toward each other to tighten and attach the most extreme ring to the power transmission line.

(Example) Hereinafter, an example of the anti-snow ring mounting device according to the present invention will be described with reference to the drawings. Fig. 1 shows the external appearance of the anti-snow ring mounting device according to the present invention, Fig. 2 shows its internal structure, Fig. 3A shows an enlarged view of its main parts, and Fig. 3B shows the anti-snow ring mounting device. The fitting part of the tip is shown.

Referring to FIG. 1, the entire mechanism of the anti-snow ring attachment device according to the present invention is housed in a bag-shaped case having a carrying handle 30 at the top. Side A of the case is a monitoring diagram and an operation surface, and side A has an opening 31 for hooking the device to the overhead wire and hanging it, a handle 32 for moving the device on the overhead wire, a power switch 33, and a ring for attaching the device. A push-button switch 34 for starting ring mounting and other control parts (not shown) are provided for starting ring mounting when the ring is moved to a certain point. Further, on the B side, a cassette storage section 35 that accommodates a large number of rings and a battery storage section 36 that accommodates a power source battery are provided.

Next, referring to FIGS. 2 and 3A, two rollers 2 are provided on the frame 3 via respective shafts 2' so that they can move on the overhead wire 1 in the extending direction of the overhead wire. A vertical frame 4 is fixed to. A motor plate 6 is fixed to the vertical frame 4 via a liner 5, and a slide plate 9 that can slide up and down via a collared bearing 12 is attached to the slide plate 9. A pair of left and right claws 14 and 15 that are movable are attached. The claws 14, 15 are always urged downward by a spring 18, and their respective claw tips 14', 15' are kept open. The pair of toes 14' and 15' are used to fit the ring.

Therefore, the claws 14, 15 are positioned so that the ring 25 housed in the cassette 26 is held at a position where it is fed out by the spring 27. Moreover, 16.17 is a roller for transmitting the force for pushing the pawl 14.15 inward to the pawl 14.15 from behind the pawl, and the force is transmitted from the eccentric cams 20.21, respectively.

On the other hand, the slide plate 9 is guided by the guide bearing 12 fixed as described above and can slide up and down.
Its vertical movement is controlled by an eccentric cam 1 attached to the tip of the motor 8.
This is done by pushing up the roller bin 11 fixed to the slide plate 9. 13 is a support plate for supporting the four bearings 12.

Reference numeral 7 denotes a motor as a power source for fitting the ring 25 with claws 14 and 15. When the motor 7 rotates, the cam 20 rotates to the left when viewed from the inverted side view of FIG. 2
1 connects the driving force of the motor 7 to the shaft 22.2 so that it rotates clockwise.
3 etc., the signal is transmitted to the cams 20 and 21 via bevel gears.

Reference numeral 24 denotes a battery for power supply for energizing the motor 7.8, preferably a battery compartment 36 (see Fig. 1) in which two batteries, including a spare one, are provided at the bottom of the case 28.
This also works to lower the center of gravity of the entire device.

Note that the cassette 28 for storing the rings has a plurality of rings 25 in two rows as shown in FIG.
is biased toward the claws 14 and 15 by a spring 27.

The cassette 26 is inserted into a cassette storage section 35 shown in FIG. By arranging the rings in two rows in this way, after using one side, you can replace it and use the other side as well.

Next, the operation of the anti-snow ring mounting device of the present invention constructed as described above will be explained mainly with reference to FIG. 2.

The worker gets on a vehicle 50 as shown in FIG. 6, hangs the anti-snow ring attachment device of the present invention into which the cassette containing the ring is inserted, on the overhead wire, and turns on the device's power switch 33 (FIG. 1). , move it to the desired position using the handle 32 (FIG. 1), and then press the ring installation starting push button 34 (FIG. 1) to give an instruction to install the ring. Thereby,
First, the motor 8 rotates, and the cam 10 pushes up the roller pin 11. As a result, the slide plate 9 rises, and the claw 14.
15 is raised, and the leftmost ring 25 of the ring cassette 26 as seen in FIG. 1 (B) is lifted by the claws 14 and 15. At this time, the claws 14 and 15 are lowered to the position A in FIG. 1(A). When this position is reached, a position detection switch (not shown) is activated, the motor 7 rotates, and the cam 20.2
1 presses the rollers 16, 17 inward, so that the positions of the rollers 16, 17 move from A to B to C, and accordingly, the toes 14' and 15' rotate so as to fit the tip of the ring. In this way, attach the ring 25 to the wire l.
is fitted. After this, the cams 21 and 21.10 continue to rotate, and the pawls 14.15 and slide plate 9 are returned to their initial positions, the motor power is turned off by a position detection switch (not shown), and the operator can move the device to the next position. Move it to the ring attachment position, and repeat the above operation there.

In particular, the shape of the cams 20 and 21 is set as follows. Referring to FIGS. 3A and 3B, the ring tightening stroke L1 is taken until the toes 14', 15' touch the ring, and L2 is the stroke that actually tightens the ring. Among these strokes L2, the stroke L3 for fitting the toes of the rings together requires the strongest force, so the cams 20 and 21 are designed to have a cam shape that produces the maximum force at this stroke L3.

(Effects of the Invention) According to the present invention, as described above, since an eccentric cam is used to make the rotational torque of a small motor into a large force, the capacity of the motor is small, and the battery that is its power source can also be made small. It was possible to make it lightweight and compact.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the whole of the anti-snow ring attachment device according to the present invention, and FIG. 2 is a view showing its internal structure, in which (a) is an inverted view, (b) is an elevational view, and FIG. Figure 3A is an enlarged view of the main part of Figure 2 (A), Figure 3B is a diagram showing the fitting part of the ring, Figure 4 is an exploded perspective view showing the ring storage compartment 7-2, and Figure 5 is an exploded view of the ring storage compartment. An explanatory diagram showing the process leading to cylinder formation, Fig. 6 is a diagram to explain the conventional manual ring installation work, Fig. 7 is a perspective view showing the anti-snow ring, and Fig. 8 is a manual ring. FIG. 9 is a diagram illustrating a tool for attaching a ring, and is a diagram for explaining a conventional ring attaching operation using a self-propelled vehicle. (Explanation of symbols) 1. Transmission line overhead line, 7.8. Motor, 9. Slide plate, 10. First cam, 14-15. ,,,Pair of claws, 14', 15',,,,Pair of claws, 20-21. , Pair of second cams 24, , Batteries, 25, Snow-resistant ring, 2B, Ring storage cassette, 3B, Ring installation start switch.

Claims (2)

[Claims] (1) A device for attaching anti-snow rings to existing power transmission lines, which is capable of pushing out rings from a cassette containing multiple rings onto power transmission lines, and tightening and attaching rings to power transmission lines. This anti-snow ring attachment device is characterized by using an eccentric cam and responding to variable loads with an arbitrary cam shape. (2) In the description of claim 1, a pair of claws having opposing claws, a slide plate that supports the pair of claws and is movable in the vertical direction, and when actuated, the slide plate is moved. a first eccentric cam that moves in the vertical direction; a first drive source that operates the first cam; and a pair that, when activated, acts on the pair of claws and presses the tips of the claws toward each other. a second eccentric cam and a second drive source that operates the second cam, the first drive source operates the first cam to raise the slide plate, and the first drive source operates the first cam to raise the slide plate; the claws of the cassette are adjacent to the ring located at the most distal end of the cassette, and the second driving source operates the pair of second cams in response to the pair of pawls being adjacent to the most distal ring of the cassette. 2. The anti-snow ring attachment device, characterized in that the most advanced ring is tightened and attached to a power transmission line by pressing the toes of the pair of claws toward each other.