JPS5932174Y2 - Flexible wire tensioner - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a flexible cable tensioner used in the construction work of overhead communication cables strung using utility poles.

In order to span an overhead communication cable (hereinafter referred to as cable D) between utility poles, generally first, a suspension wire made of metal wire with high tensile strength is strung between the utility poles under tension, and a hanging hardware, lashing wire, etc. is attached to this suspension wire. A method of attaching communication cables is used.

Furthermore, even in recently developed cables in which a suspension line and a communication cable are integrally coated with synthetic resin or the like, the suspension line is spanned between utility poles by applying tension.

In this way, a flexible wire tensioner (hereinafter referred to as a wire tensioner) is used when hanging wires are strung between utility poles with an appropriate tension applied.

) is used. The structure of a conventional wire tensioner and the state of use of this wire tensioner will be explained with reference to FIGS. 1 and 2.

Figure 1 shows an example of the structure of a conventional wire tensioner.
is a base made of metal with a roughly U-shaped cross section, and this base 1
A winding drum 2 for a tension wire 7, which will be described later, is rotatably supported on both sides of the shaft, and a ratchet gear 3 and a hand-cranking charge 4 are fixed to this rotating shaft. An operating handle 9 having a reverse switching notch 6
are meshing.

The tension wire 7 is for gripping a suspension wire W (see FIG. 2) strung between utility poles, and one end is fixed to the winding drum 2, and the other end is a wire gripping tool for gripping the suspension wire W. 8 is installation.

A locking pin 11 is provided at the bottom of the base 1 for locking a support wire 10 that is wrapped around a fixed object such as a utility pole.
A locking hardware 12 is attached to the other end of the support wire.

The situation in which the suspension wire W is stretched using this wire tensioner will be explained with reference to FIG. 2.

C is a telephone pole erected on the ground, A is a wire tensioner body, and W is a hanging wire.

First, a worker on the pole wraps the support wire 10 latched to the wire tensioner main body A several times around the pole at a specified ground height position, and fixes the support wire 10 with the latching hardware 12 at the end. do.

Next, the suspension wire W, which is to be straddled over an adjacent utility pole (not shown) and fixed to the utility pole C, is grasped by the wire gripping tool 8 at the tip of the tension wire 7, and when the handle 9 is reciprocated by human power, the tension wire 1 is successively wound onto the winding drum 2, and tension is gradually applied to the suspension wire W held by the tension wire 7, so that it is stretched tightly to the vicinity of the utility pole C.

Even if the handle 9 is reciprocated, the ratchet gear 3 causes the winding drum 2 to rotate only in one direction and not in the opposite direction.

Therefore, a worker on the pole fixes the hanging wire to the pole under tension using appropriate means.

Once the suspension wire is fixed, the wire tensioner is removed from the suspension wire, and the suspension wire is strung using the same procedure in the next span section.

As explained above, in the conventional wire tensioner, the length of the support wire 10 for supporting and fixing the wire tensioner body A to the utility pole is constant (
For example, in a wire tensioner with a 1500 kp standard, the wire diameter is 8 mm.
, length 1.95 m), and the length cannot be adjusted, making it difficult to handle the support wire when fixing the wire tensioner to utility poles of various diameters.

If the support wire between the wire tensioner body A and the utility pole is too long, the workability and safety of the tension wire will deteriorate; if it is too short, it will be difficult to fix the support wire to the utility pole, which will also reduce work efficiency. There was a drawback that led to

The present invention aims to provide a flexible wire tensioner that eliminates such drawbacks, and allows the length of the support wire, which cannot be adjusted with conventional wire tensioners, to be adjusted to any length within a certain range. This is what I did.

Therefore, in the present invention, a winding drum is rotatably supported on both side plates of a metal base having a substantially U-shaped cross section, and one end is fixed to the winding drum, and the other end holds a suspension wire to be stretched. a tension wire provided with an auxiliary wire tool, a hand-cranking charge fixed to the rotating shaft of the winding drum, a ratchet gear, a handle that meshes with the ratchet gear, and one end of which is locked to the bottom of the base. , in a flexible wire tensioner consisting of a support wire to be wound around a fixed object such as a utility pole having a locking metal fitting at the other end, the metal plate body having a substantially U-shaped cross section is rotatably mounted on both sides of the metal plate body at the bottom of the base. A flexible wire tensioner characterized in that a support wire winding drum is pivotally supported, and a support wire winding mechanism comprising a ratchet gear and a charge for manually rotating the winding drum is fixed to the winding drum rotating shaft. It is.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 3 is a front view showing the structure of the flexible wire tensioner of the present invention.

Items with the same symbols as in Figure 1 indicate equivalent items, and 1' is a metal plate with a substantially U-shaped cross section that is fixed to the bottom of the base 1, and of course is formed integrally with the base 1. It's okay.

Reference numeral 13 denotes a winding drum for the support wire 10 rotatably supported between both side plates of the metal plate body 1/, and one end of the support wire 10 is fixed to the winding drum 13.

14 is a ratchet gear fixed to the rotating shaft of the winding drum 13, and 16 is a notch pawl for preventing reverse rotation of the ratchet gear.

Reference numeral 15 denotes a charger for manually rotating the rotating shaft of the winding drum 13.

In this way, the drum 13 with two windings of the metal plate 1'. Ratchet gear 14. The notch pawl 16 and the hand-cranking hinge 15 constitute a support wire winding mechanism that is a feature of the present invention.

Next, a method of using the wire tensioner of the present invention will be explained with reference to FIG.

In FIG. 4, B is the main body of the wire tensioner of the present invention.

First, the worker on the pole wraps the support wire 10 around the pole C two or three times at a predetermined height position, and then attaches the locking hardware 12 at the tip of the wire.
Hook it on the wire and fix it.

Next, the charging material 15 is turned by hand to rotate the winding drum 13, and the support wire is wound until the distance between the utility pole C and the wire tensioner main body B becomes a length suitable for the work.

Then, the suspension wire W is held by the auxiliary wire tool 8 at the tip of the tension wire 7, and the handle 9 is operated to span the suspension wire W.

Of course, tension is applied to the tensioning wire 7 and the support wire 10, but the tensioning work can proceed without rotation of the winding drum 22 and the winding drum 13 by the ratchet gears 3 and 14, respectively.

As explained in detail above, the flexible wire tensioner of the present invention can adjust the distance between the utility pole and the main body of the wire tensioner to any distance within the range of the maximum length of the support wire wound around the drum. This brings about great advantages in improving the efficiency of communication line construction work and improving work safety.

[Brief explanation of the drawing]

Figure 1 is a schematic front view showing the structure of a conventional wire tensioner, Figure 2 shows a wire tensioning operation using the conventional wire tensioner, and Figure 3 is an example of the flexible wire tensioner of the present invention. Schematic front view showing the fourth
The figure is a conceptual diagram showing how the flexible wire tensioner of the present invention is used. 1...Base, 1'...Metal plate, 2.
... Winding drum, 3, 14 ... Ratchet gear, 4, 15 ... Chargeable object, 6 ...
Switching notch, 7...Tension wire, 8...
・Auxiliary wire tool, 9...Handle, 10...
Support wire, 11... Locking pin, 12...
... Locking hardware, 13 ... Winding drum, 16 ...
...Notch claw, A, B...Wire tensioner body, C
... Telephone pole, W ... Hanging wire.

Claims (1)

[Scope of utility model registration request] A winding drum rotatably supported by both side plates of a metal base having a substantially U-shaped cross section, and a gripping wire having one end fixed to the winding drum and the other end gripping a hanging wire to be stretched. A tension wire provided with a tool, a charge for manual rotation fixed to the rotating shaft of the winding drum, a ratchet gear, a handle that meshes with the ratchet gear, and one end locked to the bottom of the base and the other end. In a flexible wire tensioner comprising a support wire to be wound around a fixed object such as a utility pole, the support wire is rotatably attached to both side plates of a metal plate having a substantially U-shaped cross section at the bottom of the base. A flexible wire tensioner characterized in that a winding drum is pivotally supported, and a supporting wire winding mechanism comprising a ratchet gear and a charge for manually rotating the winding drum is fixed to the winding drum rotating shaft.