JP3464324B2 - Wedge anchor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wedge type detention clamp, and more particularly, to a connecting plate for connecting to a support such as a steel tower and a U-shape pivotally attached to the connecting plate for inserting an electric wire. a body portion having a groove cross-section, wedge retainer which is supported on the main body portion, is pushed between the wedge pressing a body portion, for gripping the wedge portion and the jumper wire to secure the wire in wedge effect A wedge consisting of a grip and the grip of this wedge
The present invention relates to a wedge type detention clamp including a jumper metal fitting for gripping an electric wire .

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 16, a U-bolt 4 is used for gripping an electric wire, that is, a jumper wire, by a gripping portion of a wedge and a jumper metal fitting in this type of wedge-type strain clamp.
0 was used (see Jpn. Pat. Appln. KOKAI No. 48-8072). That is, a connecting plate 2 for connecting to a support such as a steel tower (not shown), and a pivot plate attached to the connecting plate 2.
A body portion 4 having a groove 12 of U-shaped cross-section wire W is inserted, the Kusabiosae 5 supported to the main body portion 4, the wire W is pushed in between the Kusabiosae 5 and the body portion 4 The electric wire is grasped in cooperation with a wedge composed of a wedge portion 7a fixed by the wedge effect and a grasping portion 7b for grasping the electric wire, and a groove of the grasping portion of the wedge.
Lifting jumper fitting the wedge-type anchor clamps 1 your Itewa consisting for, the gripping of the jumper wire by the gripping portion 7b and the jumper fitting 8 wedges, two U-bolts 40, 40 have been used . It should be noted that the U-bolt 4 is also used for gripping the jumper fitting 8 and the jumper wire at a position where the wedge gripping portion 7b is removed.
The holding means 41 composed of a holding metal fitting 42 that uses 0 is used.

In mounting the wedge type detention clamp, at least one leg of the U bolt is removed from the grip portion of the wedge or the bolt hole of the jumper fitting in order to pass the electric wire between the legs of the U bolt. It is necessary to pass both legs of the U-bolt through the bolt holes at the same time after placing the electric wire at the position for gripping the wire, and the U-bolt is usually separated from the grip of the wedge and the jumper metal fitting. For this reason, when installing the wedge-type strain clamp, it is necessary to carry the U-bolt separately and perform detailed work in a highly unstable place such as on a steel tower. The U-bolt and its accompanying nuts and washers are required. There is a risk that the part may be dropped and lost, or the object below may be damaged by dropping it . Not only that, the installation work was complicated and difficult.

[0004]

Focusing on the difficulty of such work, it has already been necessary to connect the J-bolt to the wedge and crimp the U-bolt to the jumper metal fitting in order to grip the jumper wire. Attempted (Actual Kaihei 6-77435
In the case of J-bolt), since the side is open, it is easy to place the electric wire in the gripping position (to bring the retracting clamp to the gripping position), but the gripping is not uniform and it is large. There is a problem that gripping force cannot be obtained.
There was a problem that working such as caulking is Ru is excessively added when the bolt.

The present invention has been made to solve such a conventional problem, and when the jumper wire is held between the holding portion of the wedge and the jumper fitting, the electric wire can be placed at the holding position. It is an object of the present invention to provide a wedge type detention clamp that is not only easy but can provide a sufficient gripping force.

[0006]

In order to achieve the above object, the present invention is to insert a connecting plate for connecting to a support such as a steel tower and an electric wire pivotally attached to the connecting plate. a main body having a groove of U-shaped cross-section, a wedge retainer which is supported on the body portion, the wedge portion and a wire for fixing a wedge effect pushed in <br/> wire between the wedge pressing a body portion A wedge composed of a gripping portion for gripping, and a groove formed in the wedge in cooperation with each other.
In a wedge-type strain clamp consisting of a jumper metal fitting having a groove for gripping an electric wire, on the side of the grip portion of the wedge.
Provided overhanging portion forming a notch that opens to the side, the
Lateral, corresponding to the overhang on the side of the wedge grip
The side of the jumper metal fitting with the overhanging part that has a notch that opens to
Provided parts, one on one of the protruding portion fixing a <br/> pin across the notch and pivoted one end of I volt to this pin
Along with the jumper gold at the position corresponding to the grip of the wedge
The bottom surface of the groove of the ingredient is provided with depressions or wavy irregularities .

Also, a notch portion that opens to the side is formed on one side.
Of the wedge grip and the jumper bracket
At the overhanging part provided on the other side, either one
It is possible to make the projection part L-shaped and pivotally connect both.
Wear.

Further, in the groove of the grip portion of the wedge, the above-mentioned jean is formed.
Swelling that corresponds to the depressions and wavy irregularities on the bottom of the metal fitting groove
It is preferable to provide wavy unevenness.

[0009] Incidentally, even gripping means jumpers in the wedge cooperating with no portion of the jumper fitting, it is preferred to utilize a weight per unit area I bolt.

[0010]

[Action] is on the side of the grip portion of the wedge is provided a projecting portion forming a notch that opens to the side, et provided on the side of the grip portion of the wedge
Form a side-opening notch that corresponds to the overhang
The overhanging part is provided on the side of the jumper bracket, and either
A pin that crosses the notch is fixed to the overhanging portion, one end of the I bolt is pivotally attached to this pin, and the gripping portion of the wedge is provided.
At the bottom of the groove of the jumper bracket at the position corresponding to
Since the wavy unevenness is provided , the I-bolt can be rotated outward around the pin, and it is easy to put the electric wire on the grip part, and it is also possible to put the nut or washer on the I-bolt. It is possible, and there is no dispersion of parts that may cause it to fall, and mounting work is easy. Also the jumper
At the position corresponding to the grip of the wedge of the metal fitting, dent in the bottom of the groove,
Or, since wavy unevenness is provided,
The gripping force can be increased, for example by changing the number of bolts
Can be reduced.

Further, a notch portion that opens to the side is formed on one side.
Of the wedge grip and the jumper bracket
At the overhanging part provided on the other side, either one
When the protrusion is L-shaped and both are pivotally attached, the wedge and
Since it is connected to the damper fitting by pivotal connection,
Dispersion can be made to much less, during installation of the wedge-type anchor clamps, and less risk of falling component, can facilitate work.

Further, a jumper metal fitting is provided in the groove of the grip portion of the wedge.
Bulge and wavy that correspond to depressions or wavy irregularities of the bottom surface of the groove of
If the unevenness of the
It can be great.

[0013] Incidentally, as gripping means jumpers in the wedge cooperating with no portion of the jumper bracket, when utilizing basis weight I bolt mounting operation of the wedge-type anchor clamp becomes easier.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the wedge type detention clamp shown in the drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals.

In FIG. 1, a wedge type detention clamp 1 has a connecting plate 2 for connecting to a support such as a steel tower (not shown).
A main body 4 rotatably fitted to a center bolt 3 fixed to the connecting plate 2, a wedge retainer 5 fitted to the center bolt 3 inside the main body 4, and a main body 4 The reinforcing plate 6 fitted to the center bolt 3 on the outside of the
And the jumper metal fitting 8.

The connecting plate 2 is composed of two flat plates, for example, steel plates, and a pulling tab 10 for tight lines is fixed to the center of the connecting plate 2 by a connecting bolt 9, and an attaching bolt 11 is arranged at the end thereof. There is. The center bolt 3 has an enlarged head portion at one end and a screw for screwing a nut at the other end. The main body 4 is U-shaped in cross section and has a substantially triangular shape when viewed from the front, and is formed of an aluminum alloy so that the groove 12 for inserting the electric wire W is formed in the bottom thereof. The light alloy reinforcing plate 6 is fixed to the outside of the main body portion 4 with screws 6a. The wedge retainer 5 is a triangular flat plate made of aluminum alloy, and is formed such that its bottom surface 5a and the bottom surface 12a of the groove portion 12 of the main body portion 4 are spaced at a predetermined interval.

As shown in FIGS. 2 to 4, the wedge 7 comprises a tapered wedge portion 7a and a grip portion 7b, and one arc-shaped groove 13 is formed through the wedge portion 7a and the grip portion 7b. . The radius of this groove 13 is substantially equivalent to the radius of the electric wire W to be fixed. The bottom surface of the groove 13 is formed in a substantially linear shape over the entire length of the wedge 7.
The b is a bulge 13a that bulges slightly.
Then, the gripping portion 7b of the wedge, the overhanging portions 15 and 16 to form an intermediate in the notch 14, 14 on its opposite sides,
16 are provided respectively.

As shown in FIGS. 5 to 7, the jumper metal fitting 8 is curved so as to draw a large arc, and a similar groove 17 facing the groove 13 of the wedge 7 is formed along the curvature along its entire length. There is. The groove 17 of the jumper metal fitting 8 at the position corresponding to the grip portion 7b of the wedge 7 is the groove 1 of the wedge 7 described above.
In order to ensure the grip of the electric wire W in cooperation with the bulge 13a on the bottom surface of the groove 3, a recess 17a that does not follow the curve is formed. It should be noted that the same effect can be obtained by forming the bulges 13a and the depressions 17a in a corrugated shape, that is, unevenness. Alternatively, the bulges 13a of the groove 13 may be reversely dented and the depressions 17a of the groove 17 may be bulged. A bulge may be formed in the groove. Further, also on the side portion of the jumper metal fitting 8, overhang portions 19, 19 and 20, in which cutout portions 18, 18 are formed in the middle at positions corresponding to the grip portion 7b of the wedge 7,
20 are provided respectively.

Overhangs 19 and 1 on both sides of the jumper fitting 8
9 and 20, 20 are provided with perforations 22, 22 and 23, 23 for fixing the pin 21 (FIG. 1). The eyelet 25 provided at one end of the unit weight I bolt 24 shown in FIGS. 14 and 15 is aligned with the perforations 22, 22 and 23, 23 so that the pin 21 is provided with the perforations 2.
When fixed to 2, 22, 23, and 23, since the eye hole 25 of the I bolt 24 is formed with an inner diameter larger than the diameter of the pin 21, the I bolt 24 is connected to the jumper metal fitting 8 by the pin 21 and It can pivot sideways (see Figure 8).

Therefore, it is possible to bring the electric wire W to the gripping position with the I-bolt 24 rotated laterally, and the fastening nut 26 and washer 27 are attached to the I-bolt 24.
By fitting or screwing together, the work of attaching the wedge type detention clamp can be simplified, and the tightening nut and washer can be prevented from falling. Incidentally, when the gripping of the wire W, by rotating the I bolt 24 in the vertical direction, the overhang portion and the other end portion provided on both sides of the gripping portion 7b of the wedge 7 15,1
6 is engaged with each of the cutouts 14, 14 and fastened with a nut 26. The width of each part is designed so that the gold wheel can pass in this use state.

A hole 2 for fixing the pin 21 is provided.
The 2 and 22 and 23, 23 provided on the projecting portion 15, 15 and 16, 16 provided on both sides of the gripping portion 7b of the wedge, I
It is also possible to fix the pin 21 to the grip portion 7b of the wedge 7 through an eye hole 25 provided at one end of the bolt 24 and to provide only the notches 18 and 18 in the jumper metal fitting 8. In this case, the nut 26 is fastened on the jumper metal fitting 8 side.

As shown in FIG. 9, the grip portion 7b of the wedge 7 is provided.
Are provided with bulges 15, 15 and 16, 16 in which the notches 14, 14 opening to the side are formed on both sides of the pin, and one of the bulges 16, 16 crosses the notch 14. 21
By providing perforations 30 and 30 for providing the holes, as shown in FIG. 9, an L-shaped projecting portion 28 having no cutout portion is provided at a position corresponding to the grip portion 7b of the wedge 7 of the jumper metal fitting 8. , Pin holes 29 are formed. The perforations 30, 16 of the overhanging portions 16, 16 of the wedge 7 and the pin holes 29 of the L-shaped overhanging portion 28 of the jumper fitting 8 are aligned so that the pin 21 is extended.
If it is fixed to, the jumper metal fitting 8 can be connected to the wedge 7 in a hinge shape. Next, I is formed in the perforations 22 and 22 of the projecting portions 19 and 19 in which the cutout portion 18 is formed on the other side of the jumper metal fitting.
Align the eye holes 25 of the bolt 24 and pierce the pin 21 22
The I-bolt 24 is pivotally attached laterally so that it can be pivoted sideways if it is fixed to the overhanging portions 19, 19 through the eyelet hole 25 (see FIG. 11).

In this way, the wedge 7, the jumper fitting 8 and the fastening I bolt 24 are all connected to prevent dissipation of each component, and the I bolt 24 is rotated laterally and the wedge 7 and the jumper are moved. by spacing between the fitting 8, the wire W to be able to put easily into gripping position from the side, fastening <br/> was deposited by a nut 26 by rotating the I bolt 24, the wire W Can be gripped. The width of each component is designed so that the gold wheel can pass in this usage state. By the way, an L-shaped overhanging portion that does not form a notch is provided on the other side of the grip portion 7b of the wedge 7, and the overhanging portion is fixed to one overhanging portion provided on both sides of the jumper metal fitting 8. It is pivotally attached to a pin, and an overhanging portion having a notch is provided on one side to fix the pin, and an I bolt whose one end is pivotally attached to the pin places a nut on the jumper metal fitting side for tightening. Even if it does so, it will be clear that the same action and effect can be obtained.

As shown in FIG. 1, the grip portion 7b of the wedge 7 is formed.
Also the gripping means 41 of the di-catcher lymphoma line at the tip of the jumper fitting 8 leaving the, by utilizing the I bolt,
It is possible to increase the gripping force while reducing the dispersion of the parts. As shown in FIGS. 12 and 13, at the tip of the jumper metal fitting 8, L-shaped protrusions having notches on the other side are provided with protrusions 32, 32 having notches 31 on one side. A portion 34 is provided to form a pivotally mounted pin hole 35. Then, the overhang portions 32, 32 are provided with perforations 33, 33 for fixing the pins. This is almost the same as the structure of both sides of the jumper metal fitting 8 shown in FIG. Note that FIG. 13 is a view of the jumper metal fitting 8 provided with the gripping means 41 as seen from its tip. Also, FIGS.
Typical unit weight I bolt 24 used in the present invention
Is shown.

The holding means 41 at the tip of the jumper fitting 8 is a holding fitting 42 that cooperates with the jumper fitting.
Although not specifically shown, it has substantially the same shape as the grip portion 7b of the wedge 7 shown in FIG. Therefore, in the same relationship as the wedge 7 and the jumper metal fitting 8 and the I bolt shown in FIG. 11, the pressing metal fitting 42 and the jumper metal fitting 8 are rotatably connected by a pin, and at one side, I The bolt is rotatably connected by a pin inserted into and fixed to the perforations 33, 33 so that the jumper wire can be inserted from the side and the parts can be prevented from being dispersed.

[0026]

As described above, according to the present invention, the respective parts are almost not connected and dispersed, the risk of dropping them is small, and the mounting work can be facilitated. Well
And, at a position corresponding to the grip of the wedge jumper bracket recess on the bottom of the groove, or is provided with the wavy unevenness,
Gripping force is improved to grip the wire, Ru can reduce the number of bolts. In addition, connect the wedge and jumper metal fittings in a hinge shape.
In case of use, the parts will be less dispersed and work will be easier.
Can be done. Further , when using the I-bolt with a weight in a portion of the jumper metal fitting that does not cooperate with the wedge, not only the attachment thereof is easy, but also the gripping force can be increased.

[Brief description of drawings]

FIG. 1 is a front view of a wedge type detention clamp showing an embodiment of the present invention.

FIG. 2 is a front view of a wedge of the wedge type retracting clamp of FIG.

FIG. 3 is a plan view showing an upper surface of a wedge of the wedge type detention clamp shown in FIG. 1.

FIG. 4 is a side view showing an end surface of the wedge of FIG. 3 on a gripping portion side.

5 is a front view of a jumper metal fitting of the wedge type detention clamp of FIG. 1. FIG.

6 is a partial plan view of a position corresponding to a grip portion of a wedge of the jumper fitting of FIG.

FIG. 7 is a side view showing an end surface on the wedge side of the jumper metal fitting of FIG. 5;

FIG. 8 is a side view showing the fastening I-bolt pivotally attached to the jumper fitting of FIG.

FIG. 9 is a partial plan view showing an upper surface of a grip portion of a wedge showing another embodiment of the present invention.

FIG. 10 is a partial plan view of a position corresponding to a grip portion of a wedge of a jumper fitting showing another embodiment of the present invention.

11 is a partial cross-sectional side view showing a state where the wedge 7 shown in FIG. 9 and the jumper fitting shown in FIG. 10 are pivotally attached, and further the fastening I bolt is pivotally attached and connected.

FIG. 12 is a partial plan view of a tip end portion of the jumper fitting of FIG.

FIG. 13 is a side view of the jumper fitting of FIG. 1 viewed from the front end direction.

FIG. 14 is a front view of an I-bolt used in the wedge type detention clamp of FIG.

FIG. 15 is a side view of the I-bolt of FIG.

FIG. 16 is a front view of a conventional wedge type detention clamp.

[Explanation of symbols]

1 Wedge type detention clamp 2 connecting plates 3 Center bolt 4 main body 5 wedge presser 7 wedge 7a wedge part 7b grip 8 jumper brackets 12 grooves 12a bottom 13 groove 13a bulge 14 Notch 15,16 Overhang part 17 groove 17a hollow 18,31 Notch 19, 20, 32 Overhang 21 pin 22, 23, 30, 33 Perforation 24 I bolt 26 nuts 28,34 L-shaped overhang 29,35 pin holes 40 U bolt 41 gripping means 42 Press fitting W electric wire

Continuation of the front page (56) Reference JP-A-4-71314 (JP, A) JP-A-7-143648 (JP, A) Actually open 58-111421 (JP, U) Actually open 48-19189 (JP , U) Actual opening Sho 59-69627 (JP, U) Actual opening Sho 55-66245 (JP, U) Actual opening Sho 48-109497 (JP, U) Actual public Sho 48-8072 (JP, Y1) Actual public Sho 46-30830 (JP, Y1) S. 36-17657 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) H02G 7/02

Claims (4)

(57) [Claims] 1. A connecting plate for connecting to a support, such as a steel tower, and a U, into which an electric wire pivotally attached to the connecting plate is inserted.
A main body having a groove having a V-shaped cross section; a wedge retainer supported by the main body; and a wedge portion and an electric wire for fixing the electric wire pushed between the wedge retainer and the main body by a wedge effect. A wedge consisting of a gripping portion for gripping and a groove formed in this wedge cooperate with each other to generate an electric current.
In the wedge-type anchor clamp comprising a jumper fitting having a groove for gripping the line, the extended portion forming a notch that opens to <br/> side provided on the side of the grip portion of the wedge, This wedge
Corresponding to the overhang provided on the side of the grip of the
Open the overhanging part with the cutout to the side of the jumper bracket.
To provided, any on one of the protruding portion fixing a pin <br/> down across the notch, pivoted Then one end of the I bolt this pin
Both are jumper metal fittings at positions corresponding to the grips of the wedges.
A wedge-type retracting clamp, characterized in that the bottom surface of the groove is provided with depressions or corrugations . 2. A notch which opens to the side is formed on one side.
Of the wedge grip and the jumper bracket
At the overhanging part provided on the other side, either one
2. The wedge type detention clamp according to claim 1, wherein the projecting portion is L-shaped and both are pivotally attached. 3. The jumper is provided in the groove of the grip portion of the wedge.
The bulge that corresponds to the depression on the bottom of the groove of the metal fitting and the wavy unevenness
The wedge type tension clamp according to claim 1, wherein wavy unevenness is provided . 4. A portion of the jumper fitting that does not cooperate with the wedge.
Use a unit weight I bolt for gripping the electric wire in
The wedge according to any one of claims 1 to 4, characterized in that
Type retracting clamp.