JP2959752B2 - Telephone pole band clamp - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an elongated band body in which a number of through holes are formed in a line, and one end side of a tightening bolt attached to a tightening portion provided at a front end of the band body. The present invention relates to a power pole band tightening device that is fastened by being hooked on a through hole.

[0002]

2. Description of the Related Art For example, there is a structure disclosed in Japanese Utility Model Publication No. 54-18621. In this conventional example, a temporary fixing piece is provided at the tail end of a band main body in which a number of through holes are formed in a line, and the band main body is wound around a telephone pole, and the temporary fixing is performed while tightening the band main body within the range of the strength of an operator. After the piece is inserted into an appropriate through hole of the band body and temporarily fixed (the tightening state is maintained even if the hand is released in this state), the tightening bolt of the tightening bolt attached to the base-side tightening catch is removed. The distal end is hooked on an appropriate through-hole of the band body, and then the tightening nut screwed to the tail end of the bolt is screwed in so that the base end of the band body together with the tightening catch is drawn. The utility pole band is fastened to the utility pole.

[0003]

SUMMARY OF THE INVENTION The above-mentioned prior art is intended to improve the workability of mounting this type of power pole band made of a steel material having poor flexibility and strong restoring force. When the band main body is wound around a telephone pole by providing a temporary fixing piece at an end, the band main body is temporarily tightened at the same time as the band main body is tightened (sliding on the telephone pole surface or the lower band surface). The final tightening by separately tightening the tightening nut and the tightening bolt can be performed after a certain amount of excess tightening of the body is taken, so that the screwing process of the nut can be shortened (the tightening bolt does not need to be extremely long). It is.

However, depending on the shape of the object mounted on the telephone pole by the band, the band is intended to be tightened under the above-mentioned smooth sliding of the band by the tightening work of the band by the strength of the operator. In some cases, the band cannot be completely tightened even if the tightening nut is screwed in afterwards. Is likely to occur, in which case a series of pillaring work must be redone, wasting labor and time.

The present invention has been made in view of such a drawback.

[0006]

Basically, on one side of a front end portion of a main body fitting having a U-shaped cross section, a hook for an appropriate through-hole arranged in a power pole band is provided to penetrate through the front end portion. A tightening nut, which is locked to the head end of the band and is restricted from rotating with respect to the tightening bolt, is screwed into the tightening bolt, and a receiving pole provided on the telephone pole band is provided on the rear end side of the main body fitting. A configuration in which a pressing piece that engages and disengages a retaining edge is provided, and a protrusion is provided in an appropriate position on one side of the front end of the main body metal fitting in a direction inward of the main body metal fitting, between the protrusion and the front end piece. The latch is inserted, a tightening bolt is passed through a through hole formed in the latch, and a latch piece is provided at a tip of the latch that protrudes from the main bracket to provide more specific means. .

[0007]

At the beginning of the band winding work on the electric pole by hand, a certain amount of extra tightening processing is performed by locking the pressing piece to the receiving edge of the telephone pole band, and the main body is received by the pressing piece. When the band is turned so as to press the locking edge, the band is tightened and the extra length processing is increased. At this point, the locking piece is hooked on the through hole provided in the telephone pole, and the tightening bolt is turned. Then, the tightening nut moves with the head end of the band to the bolt head side, that is, to one side of the front end of the main body fitting, and the band is fastened to the utility pole.

[0008]

1 shows an embodiment of a band tightening device according to the present invention. FIG. 1 is a longitudinal sectional view, FIG.
Is a cross-sectional view showing the relationship between the hook and the band, FIG. 4 is a side view at the start of the tightening operation, FIG. 5 is a partially cutaway plan view of the main body fitting, FIG. 6 is a cross-sectional view of the main body fitting, and FIG. Front view of metal fittings, FIG. 8
9 is a front view of the latch, FIG. 9 is a cross-sectional view of the latch, FIG.
Is a partially cutaway plan view of a latch, FIG. 11 is a perspective view of a part of a power pole band, FIG. 12 is a plan view of a part of a power pole band of a second embodiment, and FIG. 13 is a second embodiment. 14 is a side view at the start of the tightening operation, FIG. 14 is a plan view of a part of the power pole band of the third embodiment, and FIG. 15 is a side view of the third embodiment at the start of the tightening operation.

In FIG. 1, reference numeral 1 denotes a main body fitting. The main body fitting 1 is provided on both sides of an upper piece 2 with partial pieces 3a and 3b projecting downward in a substantially triangular shape at a front end and a rear end. Piece 3,
The front piece 3 is connected to the side pieces 3 and 3 and the upper piece 2 and the front end piece 4 is arranged.
b, a pressing piece 5 is formed by continuously connecting a bottom piece to the pressing piece 5. A substantially vertically long through hole 6 is provided substantially at the center of the front end piece 4, and the lower side of the through hole 6 is formed. Are vertically recessed to form a triangular engaging ridge 7, and the engaging ridge 7 is provided on the front end piece 4 side of the upper piece 2 and the side pieces 3, 3. Similarly, protrusions 8, 8 ′, 8 ′ are provided inwardly of the main body fitting 1, and an insertion gap 10 between the protrusions 8, 8 ′, 8 ′ and the front end piece 4 with respect to the latch metal 9 is provided. It is what it was.

The latch member 9 has a latch piece 12 connected to the center of the lower end of a main piece 11 whose contour is substantially the same as the insertion gap 10, and the main piece 11 is positioned at a position corresponding to the through hole 6. A slightly elongated through hole 13 is provided, and an engaging portion 14 having a triangular cross section for engaging with the engaging ridge 7 is provided vertically below the through hole 13.

The power pole band 15 has a through-hole 16, 16... Arranged in the center along the longitudinal direction, and a band member 18 in which intermediate pieces 17, 17... Between the through-holes 16, 16 project outward. Is bent in a circular shape at one end thereof to form a bent piece 19, a long slot 20 is provided in the bent piece 19 along the longitudinal direction of the band body 18, and reinforcing pieces 21 and 21 are provided on both sides. Is welded to form a band head 22, and the other end corresponding to the band head 22 is formed as a tail end, and provided at the tail end along the longitudinal direction of the band body 18. The temporary tongue 23 is provided by raising the tongue-shaped piece outwardly from the intermediate piece.

Thus, the rotation of the tightening nut 24 with respect to the tightening bolt 25 by engaging the tightening nut 24 is restricted.
The band head 22 of the utility pole band 15 is inserted into and engaged with the main body fitting 1 from the rear end side, and is inserted and engaged with the through hole 6 provided in the front end piece 4 of the main body fitting 1 and the insertion gap 10. Tightening bolt 25 sequentially passed through the through hole 13 provided in the
Is screwed into the tightening nut 24 through an elongated hole 20 formed in the band head 22, so that the main body fitting 1, the hook fitting 9, and the power pole band 15 are integrated,
In addition, the main body fitting 1 is rotatable about the tightening nut 24 in the horizontal direction when the band body 18 is wound around the electric pole D as shown by an arrow in FIG. Assembled in

Then, the electric pole band 15 is wound around the electric pole D, and the temporary fixing piece 23 provided at the tail end portion is locked in an appropriate through hole 16 to maintain the wound state. The pressing piece 5, which is in a position protruding inward (on the side of the electric pole) from the head 22 of the band, is applied to an edge of the appropriate through-hole 16 (constituting the receiving edge described in claim 1). When the body fitting 1 is rotated forward so that the portion is pressed (at this point, the extra length processing can be performed as in the conventional example) and the edge position is used as a fulcrum (FIG. 4). Arrow direction),
The edge moves along the utility pole surface, and as a result, the utility pole band is temporarily tightened strongly by the utility pole D, and the hook pieces are locked in appropriate through holes. At this point, when the pressing piece 5 is removed from the edge portion and the tightening bolt 25 is tightened, the tightening nut 24 is engaged with the band head 22 and the rotation with respect to the tightening bolt 25 is regulated. It relatively moves in the direction of the front end piece 4 with the head 22, and the telephone pole band 1
5 is fully tightened.

FIGS. 12 and 13 show a second embodiment of the present invention. In the second embodiment, the partial pieces 3b and 3b at the rear end of the main body 1 (the bottom pieces are not connected). Is a pair of pressing pieces (provided on both sides of the rear end of the main body fitting).
The power pole band is provided with projections (may be through holes, which constitute the receiving edge in claim 1) 26 respectively provided at appropriate intervals on both sides in the longitudinal direction thereof for locking the pair of pressing pieces. is there.

FIGS. 14 and 15 show a third embodiment of the present invention. In the third embodiment, the band width may be narrower than that of the second embodiment. It is designed to be engaged with engagement notches (constituting the receiving edge described in claim 1) 26 ′ provided on both side ends of the use band 15.

[0016]

Since the present invention is as described above, the band is tightened because the receiving edge is pressed by the pressing piece by the rotation of the main body metal fitting, and the tightening bolt and the nut which are the final extra length processing work are required. The screwing process (tightening length) can be extremely short, and the size of the main body fitting can be reduced accordingly. In addition, since the width of the retaining piece of the tightening bolt is limited because it is engaged with the through hole provided in the pole for power poles, it must have an appropriate thickness to have strength that balances the proof strength of the band. However, in the present invention, since the latching piece is formed as a separate member from the main body fitting, the main body fitting can be formed of a thin plate, so that processing is easy.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view.

FIG. 2 is a partially cut plane.

FIG. 3 is a cross-sectional view showing a relationship between a hook and a band.

FIG. 4 is a side view at the start of a tightening operation.

FIG. 5 is a partially cutaway plan view of a main body fitting.

FIG. 6 is a sectional view of a main body fitting.

FIG. 7 is a front view of a main body fitting.

FIG. 8 is a front view of a latch.

FIG. 9 is a sectional view of a latch.

FIG. 10 is a partially cutaway plan view of the latch.

FIG. 11 is a perspective view of a part of a power pole band.

FIG. 12 is a plan view of a part of a power pole band according to a second embodiment.

FIG. 13 is a side view of the second embodiment at the start of the tightening operation.

FIG. 14 is a plan view of a part of the utility pole band of the third embodiment.

FIG. 15 is a side view of the third embodiment at the start of the tightening operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body metal fitting 4 Front end piece 5 Pressing piece 8 Protrusion 9 Hook metal fitting 10 Insertion gap 12 Hook piece 15 Telephone pole band 16 Through hole

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H02G 7/00-7/22

Claims (2)

(57) [Claims] 1. One side of a front end of a main body bracket having a U-shaped cross section,
A locking piece for an appropriate through-hole arranged in the pole pole band was provided, and a tightening bolt penetrating through the front end piece was locked to the head end of the band to restrict rotation with respect to the tightening bolt. A power pole band tightening device, wherein a tightening nut is screwed in and a pressing piece is provided at a rear end side of the main body fitting to engage and disengage a receiving edge provided on the power pole band. 2. A protrusion is provided at an appropriate position on one side of a front end portion of the main body fitting so as to be inward of the main body fitting, and a latch is inserted between the protrusion and the front end piece. 2. The power pole band tightening device according to claim 1, wherein a fastening bolt is passed through a through hole provided in the metal fitting, and a locking piece is provided at a tip end of the metal fitting which protrudes from the main metal fitting.