JP4168190B2 - Gold wheel suspension stand - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to an overhead wire with a power pole equipped with an LP insulator, and more particularly relates to a metal wheel suspension stand and an overhead wire method capable of safely and easily adjusting the slackness of an electric wire and moving the electric wire to an insulator device. .
[0002]
[Problems to be solved by the invention]
The LP insulator device is mainly used for a power transmission line having a relatively low voltage, and is used by being almost vertically set on a metal or utility pole arm made of wood or concrete. Conventionally, in an overhead wire using an LP insulator, for example, an electric wire is supported by a metal wheel suspended from a metal arm attached with an LP insulator device, and the wire is moved to the LP insulator device after the looseness of the wire is roughly adjusted. Was. According to the overhead wire method of this example, it is easy to fix the gold wheel, but in order to move the electric wire from the gold wheel to the LP lever device, it is necessary to bypass the brace and lift the wire high, It was very troublesome work. In particular, overhead wires on slopes have become increasingly difficult work because of the large tension applied to the wires.
[0003]
Another problem of the conventional example relates to the sag adjustment. The slackness of the electric wire that has been roughly adjusted while being supported by the gold wheel will change when it is transferred to the LP lever device located higher than the gold wheel, so it is necessary to readjust again. Unlike the adjustment on a gold wheel equipped with a free wheel, on the LP lever device, the adjustment is performed while contacting the lever member, so that there is a problem that the surface of the electric wire is easily damaged.
[0004]
On the other hand, instead of suspending from the arm metal, a method has been used in which a log wheel or the like is tied to the arm metal or the like so that the gold wheel can be suspended near the LP lever apparatus. According to this overhead wire method, the work of moving the electric wire from the gold wheel to the LP lever apparatus is greatly improved, but the work of fixing a member for hanging the gold wheel, such as a log, is troublesome. Further, it is difficult to adjust the position where the gold wheel is suspended to the optimum position on the side of the LP lever apparatus, and there is a problem that fine adjustment of the sag is required after moving the electric wire to the LP lever apparatus.
[0005]
Therefore, in view of the above-mentioned problems of the prior art, the present inventors have earnestly devised a metal wheel suspension stand and an overhead wire method capable of safely and simply adjusting the slackness of the electric wire and moving the electric wire to the lever device. As a result of repeated research, the present invention has been achieved.
[0006]
[Means for Solving the Problems]
The gist of the gold wheel suspension stand according to the present invention is a stand having a pulley fixing portion at the top and a flat plate fixing portion at the bottom, and at least two pairs of fixings to the flat plate fixing portion. The fixed holes constituting the pair have a diameter in a direction perpendicular to the direction connecting the fixed holes of 17 mm or more and 23 mm or less, and the shortest distance between the outer peripheries of the fixed holes is 74 mm or less. The longest distance between the outer peripheries of each is provided to be 123 mm or more. In particular, a flat plate-shaped fixing portion at the bottom fixed to the arm of the power pole, a leg portion that rises perpendicularly from the flat plate-shaped fixing portion, and an upper pulley fixing portion that extends in a direction perpendicular to the leg portion, The leg portion and the pulley fixing portion are configured by combining a hole selected from the plurality of holes of the leg portion and a hole of the pulley fixing portion and locking them with a bolt and a nut. the height of the fixing part adjustable support, the pulley fixing part, gold wheel which supports the wire is suspended by a pin coupling, by adjusting the height of the該滑wheel fixed part, by the gold car The electric wire to be used and the electric wire gripping portion of the LP lever device are set to have substantially the same height .
[0007]
Furthermore, in such a gold wheel suspension stand, the pulley fixing part is provided so as to suspend the gold wheel.
[0008]
Furthermore, in such a gold wheel suspension stand, a lifting block is disposed at a position higher than the pulley fixing portion.
[0009]
Still further, in the gold wheel suspension stand, the height of the pulley fixing portion can be adjusted.
[0010]
Further, the gist of the overhead wire method with the LP insulator column according to the present invention is that the pulley is fixed to a metal wheel suspension stand fixed on the armrest of the utility pole, and next to the electric wire gripping portion of the LP insulator device. The electric wire is supported, and the electric wire is adjusted to a predetermined sag, and then moved to the LP lever apparatus.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of a lever increasing method according to the present invention will be described in detail based on the drawings.
[0012]
FIG. 1 is a schematic diagram for explaining an example of a metal wheel suspension stand according to the present invention, assuming a state in which a metal wheel 14 is suspended and an electric wire 16 is supported by being fixed on an arm 12 of a utility pole. ing. A fixed portion 20 on a flat plate is provided at the bottom of the gold wheel suspension stand 10, rising at a leg portion 22, and a pulley fixing portion 18 is provided at the top. The traveling direction of the electric wire 16 supported by the gold wheel 14 and the longitudinal direction of the brace 12 intersect at substantially right angles.
[0013]
FIG. 2 is a top view of the gold wheel suspension stand 10 shown in FIG. The four fixing holes 24 provided in the fixing portion 20 form a pair of fixing holes 26 and 28 parallel to the electric wire 16 supported by the gold wheel 14.
[0014]
FIG. 3 is an enlarged view of the main points of FIG. 2, and illustrates the shape and positional relationship of the fixing holes and the fixing hole pairs. The fixed hole 24 has a diameter W in a direction perpendicular to a line connecting the two fixed holes 24 constituting the fixed hole pair 26 of 17 mm or more and 23 mm or less. Moreover, the shortest distance L1 between each outer periphery of the two fixed holes 24 which comprise the fixed hole pair 26 is 74 mm or less, and the longest distance L2 between the outer periphery of each fixed hole is 123 mm or more.
[0015]
As illustrated in FIG. 4, the gold wheel suspension stand 10 is fixed to the arm metal 12 by passing both ends of a so-called V bolt 30 holding the arm metal 12 through the fixing hole 24 and tightening the nut 32. The present invention can be used for either the arm metal 12 made of 75 × 75 angle iron or the arm metal 12 made of 90 × 90 angle steel, and is fixed using a V bolt 30 having a diameter of 16 mm. It is assumed that. The shape and positional relationship of the fixed hole or the fixed hole pair described above satisfy the necessary and sufficient conditions for satisfying this premise. The fixing hole pair may be formed symmetrically by the fixing holes 24 having the same shape as shown in FIG. 5A, or the fixing holes 25 having different shapes as shown in FIG. 5B. , 27 may be formed asymmetrically.
[0016]
Since many of the armatures 12 of the utility poles equipped with the LP lever device are made of 75 × 75 angle steel or 90 × 90 angle steel, the gold wheel suspension stand 10 of the present invention is very versatile, and the LP insulator It can be used for most overhead work on the pole. In addition, since the stand for hanging the gold wheel used for the overhead wire construction with the LP insulator column is usually relatively small, a practically sufficient fixing force can be secured using the V bolt 30 having a diameter of 16 mm. . Thinner V bolts 30 are insufficient in fixing force, and thicker V bolts 30 are not preferable because they are too large or too heavy.
[0017]
The gold wheel suspension stand 10 of the present invention is used as follows. That is, as shown in FIG. 6, the money wheel suspension stand 10 is fixed to the arm metal 12 adjacent to the LP lever device 34 mounted on the arm metal 12. The gold wheel 14 is hung on the pulley fixing portion 18 to support the electric wire 16. Next, after the slackness of the electric wire 16 is adjusted to a predetermined value by the tight line device, the wire is moved to the LP lever device 34 and fixed to the electric wire gripping portion 35. Since the position of the electric wire 16 supported by the gold wheel 14 is set in advance at a position adjacent to the electric wire gripping portion 35 provided at the top of the LP lever device 34, the electric wire is transferred from the gold wheel 14 to the LP lever device 34. The operation of moving 16 is easy, and even if it moves, the height of the electric wire 16 hardly changes, so the sag does not change, and it is not necessary to readjust the sag. As a result, the electric wire is not damaged based on the slack adjustment on the lever device. In FIG. 6, the gold wheel 14 is schematically shown by omitting the opening and closing port for taking in and out the electric wire. As a method of fixing the pulley, it is possible to directly attach the shaft portion of the pulley to the leg portion 22. However, it is easy to hang a commercially available gold wheel, and since the electric wire does not come off, safety is ensured. It is a high and preferable means.
[0018]
In order to move the electric wire 16 from the gold wheel 14 to the LP lever device 34, the electric wire 16 is lifted and removed from the gold wheel 14, and it is carried sideways to the electric wire gripping portion 35 provided at the top of the LP lever device 34. It is usually possible to work directly by hand. However, when a large tension is applied to the electric wire, such as an overhead wire on an inclined ground, it is difficult to lift the electric wire 16 directly by hand, and there are times when a lifting block must be used.
[0019]
FIG. 7 shows an example of the gold wheel suspension stand 11 in which the lifting block 38 is disposed above the pulley fixing portion 18. According to the gold wheel suspension stand 11 of this example, since the electric wire 16 can be pulled up by the lifting block 38, the movement from the gold wheel 14 to the LP lever device 34 is easy even when the electric wire 16 is under high tension. Can be done. The position of the lifting block 38 only needs to be a position where the electric wire 16 can be pulled up, and is particularly limited to a position higher than the gold wheel 14 along the electric wire 16, between the electric wire 16 and the LP lever device 34, etc. It is not arranged.
[0020]
The height of the LP lever device 34 is usually about 40 cm to 120 cm, and the electric wire 16 is held and fixed on the top thereof. Therefore, the position of the electric wire 16 supported by the gold wheel 14 is also preferably about 40 cm to 120 cm, and the shape of the gold wheel suspension stand 10 is determined based on the position of the electric wire 16. For example, when a 22 kv transmission line is installed, if the height of the LP insulator device 34 used is 60 cm and the distance from the top end of the pulley 14 to the pulley fixing portion 18 is 20 cm, The height is about 80 cm.
[0021]
If the suspension height of the gold wheel 14 can be adjusted and the electric wire 16 can be supported at an optimum height for each LP insulator device 34 having a different height, the versatility is enhanced and one kind of gold wheel is provided. Since only the suspension stand 10 needs to be prepared, management costs for storage and transportation can be greatly reduced. FIG. 8 (a) shows an example, but as shown in FIG. 8 (b), two holes 40 provided in the gold wheel suspension member 39 and many provided in the leg portion 22 are shown. The holes 42 are appropriately combined, locked with bolts and nuts, and adjusted to an appropriate height. By combining the metal wheel suspension member 39 shown in FIG. 7B and the leg portion 22 provided with the elongated hole, the metal wheel suspension stand 10 whose height can be adjusted by a sliding method can be obtained.
[0022]
In addition, within the scope of the present invention, various improvements and modifications are made with respect to the shape and material of the metal wheel suspension stand, the shape of the metal wheel suspension part, the leg part, and the fixing part, the type of the metal wheel and the suspension method, etc. It can be implemented in a modified form.
[0023]
Examples of the present invention are described in detail below.
[0024]
Example 1
A gold wheel suspension stand 10 similar to that shown in FIGS. 1, 2, and 3 was produced. A 50 × 50 × 4 angle steel was used for the pulley fixing portion 18 and the leg portion 22, and a steel plate having a thickness of 6 m was used for the fixing portion 20. As shown in FIG. 9, the connecting portion between the leg portion 22 and the fixing portion 20 was reinforced using a reinforcing member 44. The total height of the gold wheel suspension stand 10 was 830 mm, the size of the fixing portion 20 was 175 mm × 125 mm, and the four fixing holes 24 were long holes of 20 mm × 30 mm. The angle steel of the pulley fixing portion 18 is provided with a suspension hole 43 for suspending the gold wheel. Further, the shortest distance L1 between the outer circumferences of the two fixed holes constituting the fixed hole pair is 70 mm, and the longest distance L2 between the outer circumferences of the respective fixed holes is 130 mm.
[0025]
Example 2
Using the gold wheel suspension stand 10 manufactured in Example 1, the overhead wire work was performed on the utility pole on which the LP insulator device 34 was mounted. As shown in FIG. 6, the gold wheel suspension stand 10 was fixed close to the LP lever device 34, the gold wheel 14 was suspended, and the electric wire 16 was supported. The height of the LP lever device 34 is about 600 mm, and a press gold wheel with a gold wheel diameter of 210 mm was used as the gold wheel 14. The position of the electric wire 16 supported by the gold wheel 14 was about 20 cm lateral to the electric wire gripping portion 35 at the top of the LP lever device 34. After the slack of the electric wire 16 was adjusted to a predetermined value on the gold wheel 14, it moved to the LP lever device 34, but it could be easily moved manually. Further, when the slackness was measured again after moving to the LP insulator device 34, it was confirmed that it did not change from a predetermined value.
[0026]
Example 3
As shown in FIG. 7, a gold wheel suspension stand 11 similar to that of Example 1 was manufactured except that a lifting block 38 was disposed above the pulley fixing portion 18. The total height of the gold wheel suspension stand 11 is 1300 mm, and the lifting block 38 is a chain block with a lever called a so-called hipper. According to the gold wheel suspension stand 11 of this example, the electric wire 16 can be pulled up from the gold wheel 14 and moved to the LP lever device 34 by the lifting block 38, so that the electric wire 16 stretched with high tension can be easily operated. I was able to.
[0027]
【The invention's effect】
According to the gold wheel suspension stand according to the present invention, since the position of the electric wire supported by the gold wheel is next to the electric wire gripping portion of the LP lever device, the electric wire can be easily moved from the gold wheel to the LP lever device. .
[0028]
Further, according to the gold wheel suspension stand according to the present invention, the position of the electric wire supported by the gold wheel is almost the same height as the electric wire gripping portion of the LP lever device, so that the electric wire adjusted on the gold wheel can be adjusted. The sag does not change even when moved to the LP lever device, and no readjustment is required.
[0029]
Moreover, according to the money wheel suspension stand which concerns on this invention, since it can fix simply and firmly to the brace which consists of angle iron using a V volt | bolt, the workability | operativity and safety | security of overhead wire construction improve.
[0030]
Moreover, according to the gold wheel suspension stand which concerns on this invention, since an electric wire can be supported at the same height anytime, there exists an effect which a slackness adjustment operation is stabilized.
[0031]
Further, if a lifting block is provided above the pulley fixing portion, the electric wire can be lifted from the gold wheel and moved to the LP lever device, so that it is possible to easily work on the electric wire stretched with high tension.
[0032]
Further, if the height of the pulley fixing portion can be adjusted, it is possible to correspond to each of the LP lever apparatuses having different heights, and versatility is enhanced.
[0033]
Moreover, according to the overhead wire method with the LP insulator mounting column according to the present invention, the position of the electric wire supported by the gold wheel is set to be approximately the same as the electric wire holding portion beside the electric wire holding portion of the LP lever device. Therefore, the electric wire can be easily moved from the gold wheel to the LP lever device, and it is not necessary to readjust the sag of the electric wire after moving to the LP lever device.
[Brief description of the drawings]
FIG. 1 is an overall perspective view showing an example of a gold wheel suspension stand according to the present invention.
FIG. 2 is a top view of the gold wheel suspension stand shown in FIG. 1 according to the present invention.
FIG. 3 is an enlarged schematic top view showing the main points of FIG. 2 according to the present invention.
FIG. 4 is a side view showing an example of a method for fixing a gold wheel suspension stand to a brace according to the present invention.
FIG. 5 is a schematic diagram showing an example of a fixed hole pair according to the present invention, in which FIG. 5 (a) shows an example in which a fixed hole is provided in contrast, and FIG. This is an example.
FIG. 6 is a side view schematically showing a state in which the gold wheel suspension stand is fixed on the arm metal according to the present invention.
FIG. 7 is an overall side view showing another example of the gold wheel suspension stand according to the present invention.
FIGS. 8A and 8B are schematic diagrams for explaining an example of a gold wheel suspension stand in which the height of the pulley fixing portion can be adjusted according to the present invention, in which FIG. 8A is an overall side view, and FIG. The front view of a vehicle suspension member and the figure (c) are front views of a leg part.
FIG. 9 is a perspective view showing an example of a connecting portion between a leg portion and a fixing portion according to the present invention.
[Explanation of symbols]
10, 11: Gold wheel suspension stand 12: Arm metal 14: Gold wheel 16: Electric wire 18: Pulley fixing part 20: Fixing part 22: Leg part 2425, 27: Fixing hole 26, 28: Fixing hole pair 30: V bolt 32 : Nuts 34: LP lever device 35: Electric wire gripping part 38: Lifting block 39: Metal wheel suspension member 40, 42: Hole 43: Hanging hole 44: Reinforcement member

Claims (1)

It is composed of a flat plate-shaped fixing portion at the bottom fixed to the arm of the power pole, a leg portion that rises perpendicularly from the flat plate-shaped fixing portion, and an upper pulley fixing portion that extends in a direction perpendicular to the leg portion. ,
Said tabular fixing portions, two pairs fixing hole of are provided in parallel to each of the two ends is passed through the said fixing hole of the pair the both ends with facing the cross-arm of LP insulator apparatus is fixed consist angle steel Fixed to the arm by two V-bolts fitted with nuts ;
The leg portion and the pulley fixing portion are combined with a hole selected from the plurality of holes of the leg portion and a hole of the pulley fixing portion and locked with a bolt and a nut, thereby increasing the height of the pulley fixing portion. Is adjustable,
A gold wheel supporting the electric wire is suspended by pin coupling on the pulley fixing portion , and by adjusting the height of the pulley fixing portion , the electric wire supported by the gold wheel and the electric wire of the LP lever device A gold wheel suspension stand characterized in that the gripping part is substantially the same height .

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