JPH10126930A - High frequency cable support - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize cost reduction by greatly decreasing the number of supports for supporting a high frequency cable along a structure significantly as compared with a conventional case, thereby decreasing the total cost for installing the cable. SOLUTION: The high frequency cable support comprises a fixing member 2 being fixed to a structure X1 , and a member for gripping the circumferential surface of a plurality of high frequency cables Y simultaneously while being fixed integrally to the fixing member 2. The gripping member comprises a pair of stopper metal fittings 16, 18 having substantially Ω-shape, and a cushion member 20 interposed between them. The cushion member 20 is provided with a cable insertion hole 20b having such a caliber as circumscribing a plurality of bundled high frequency cables and a cut 20c is made from the outer circumferential surface across the cable insertion hole 20b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-frequency cable support device used for supporting and fixing a high-frequency cable connected to a micro-line or various communication antennas along a structure such as a steel tower.

[0002]

2. Description of the Related Art In order to support and fix a high-frequency cable along a structure such as a steel tower, a supporting device having a structure shown in FIGS. 7 and 8, for example, is conventionally used.

[0003] The supporting device 100 is provided with a horizontal beam X of a structure X.
₁ and a fixing member 102 fixed to
And a gripping member 104 that is integrally attached to the gripper and grips the peripheral surface of the high-frequency cable Y.

[0004] fixing member 102 includes a mounting bracket 106 having a substantially U-shape straddling the rungs X ₁ of the structure X, the mounting bracket 1
One end of a support bolt 108 is screwed into one end and fixed by a nut 110. A fastening bolt 112 is screwed into the other end of the mounting bracket 106, and the bolts 108 and 112 are prevented from loosening. Nuts 114, 11 for
6 are provided, and in the middle of the mounting bracket 106,
A nut 118 for adjusting the direction is fixed by welding or the like.

On the other hand, the gripping member 104 includes a pair of substantially Ω-shaped holding members 120 and 122 for holding the high-frequency cable Y from both front and rear sides substantially over the entire circumference, and a pair of holding members 12.
0, 122, a pair of left and right bolts 124 for fixing both ends.
126 and nuts 128, 130, 132, and 134. The thin inner packing 1 such as a rubber sheet is provided on the inner circumferential surfaces of the holding metal fittings 120 and 122 which face each other in an arc shape.
40 and 142 are attached and fixed. The other end of the support bolt 108 is integrally fixed to one holding member 122 of the holding member 104 by welding or the like.

[0006] To support and fix the radio frequency cable Y to the structure X with support device 100 having the above structure, firstly, a mounting bracket 106 of the fixing member 102 on which has cross the upper rungs X _1, fastening tighten the bolts 112, attaching the support device 100 to the rungs X _1. The mounting of the support device 100 is performed at a relatively short interval (for example, 1.0 m to 1.0 m) so that each high-frequency cable Y can withstand wind pressure vibration and the like.
(5m intervals).

Next, one high-frequency cable Y is sandwiched between a pair of holding members 120 and 122 via packings 140 and 142 for each of the support devices 100, and bolts 124 and 126 and nuts 128 and 132 are provided. The two metal fittings 120 and 122 are tightened and fixed from the front and the back using.
Finally, each locking nut 114, 116, 130, 13
Tighten 4.

[0008]

By the way, such a supporting device 100 of the prior art is provided with each high-frequency cable Y.
Can be firmly fixed to the structure X, but there is the following problem.

In the related art, even when a plurality of high-frequency cables Y are arranged in parallel, it is necessary to provide the support device 100 individually for each of the high-frequency cables Y. The larger the number, the larger the number of support devices 100 used, and the higher the overall cost of cable installation.

In order to clamp the high-frequency cable Y between the holding members 120 and 122 in one supporting device 100, it is necessary to tighten the left and right bolts 124 and 126 and the nuts 128, 130, 132 and 134 respectively. Therefore, it is extremely troublesome to attach the high-frequency cable Y to the structure X using a large number of support devices 100. In particular, it is extremely troublesome to perform the above fixing work in an unstable state at a high place, and excessive labor is required.

Further, in order to fix the high-frequency cable Y, the left and right bolts 124 and 126 and the nuts 128 and 132 are tightened in a state where one of the holding members 120 is held down. May fall. Further, in a state where the support device 100 is temporarily fixed to the structure X by loosely tightening the bolts 112, if an unexpected external force is applied to the support device 100 and the device 100 is tilted, the device itself can be easily replaced. There is also a possibility that it falls off the structure X.

An object of the present invention is to solve each of the above-mentioned problems at a stretch.

[0013]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is for supporting and fixing a high-frequency cable along a structure, and includes a fixing member fixed to the structure, The following configuration is adopted in a high-frequency cable support device that includes a gripping member that is integrally attached to a fixing member and grips a peripheral surface of the high-frequency cable.

That is, according to the first aspect of the present invention, the gripping member has a pair of substantially Ω-shaped holding members and a cushion member interposed between the two holding members. A cable insertion hole having a diameter circumscribing each high-frequency cable in which the cable is bundled is formed, and a cut is provided from the outer peripheral surface to the cable insertion hole.

According to a second aspect of the present invention, in the configuration of the twelfth aspect, the fixing member includes an inverted concave support fitting straddling the structure, and the substantially L-shaped contact fitting is held by the support fitting. A fastening bolt is screwed into one side of the opposing portions of the support fitting that face each other with the structure interposed therebetween, and the fitting is interposed between the other end and the fastening bolt.

According to a third aspect of the present invention, in the configuration of the first or second aspect, the pair of press fittings are
Each of the butted ends is connected to be openable and closable with one end serving as a fulcrum.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view showing a state in which a high-frequency cable is supported and fixed along a structure using a support device of the present invention, and FIG. FIG. 3 is a plan sectional view taken along line AA of FIG.

The supporting device 1 of this embodiment, the gripping and fixing member 2 fixed to the lateral beam X ₁ of the structure X, and integrally attached to the fixing member 2 in the circumferential surfaces of the plurality of high frequency cable Y simultaneously And a gripping member 4 to be used.

[0019] The fixing member 2 includes a support bracket 6 opposite concave across the rungs X _1. The support bracket 6 is connected to the horizontal rail X ₁
Of the facing portions 6a and 6b facing each other with the
The opposing portion 6a of (the left side in FIG. 2) engaged fastening bolt 8 is screwed, also in the opposite portions 6b on the other side (right side in FIG. 2), protrudes on the left and right along the rungs X ₁ Flanges 6c and 6d for restricting lateral deflection are provided. Further, a connecting portion 16 of a holding member 16 described later is provided on an upper portion of the supporting member 6.
The connection bolt 10 is inserted through a and the nut 11 is fastened, whereby the fixing member 2 is integrally connected to the holding member 4.

The connecting bolt 10 has a through hole 12 formed at the upper end of a substantially L-shaped fitting 12 as shown in FIG.
a is inserted. The contact fitting 12 has an intermediate portion 12b interposed between the opposing portion 6b on the other side and the fastening bolt 8, and a lower end of the holding portion 1 for the horizontal bar X.
2c is provided. Reference numeral 14 denotes a nut provided on the fastening bolt 8 for preventing loosening.

On the other hand, the gripping member 4 has a pair of holding members 16 and 18 having a substantially Ω shape and a cushion member 20 interposed between the holding members 16 and 18.

Of the pair of holding members 16, 18, one of the holding members 16 has a central portion of the string projecting toward the gripping member 4 to form a connecting portion 16a, and the connecting portion 16a is formed on the connecting portion 16a. The connection bolt 10 is inserted. Further, a flange 16b is formed at one end of the presser fitting 16, and a bent portion 16c is formed by folding the other end. Further, the other holding member 18 has a flange 18b at one end and an insertion hole 18c at the other end. When the bent portion 16c of the one holding member 16 is inserted into the insertion hole 18c, the two holding members 16, 18 are connected to each other so as to be openable and closable about one end of each butted metal member as a fulcrum. Fastening screws 22 are screwed into the flanges 16b and 18b.
O-ring 2 for preventing fall is located between b and 18b
4 is fitted.

The cushion member 20 is made of a resilient member such as neoprene rubber, for example, and has a circumferential groove 20 on its outer peripheral surface in which the holding members 16 and 18 are fitted.
a is formed, and a plurality of
A cable insertion hole 20b having a diameter circumscribing each high-frequency cable bundled (three in this embodiment) is formed, and a cut 20c is provided from the outer peripheral surface to the cable insertion hole 20b.

A description will now be given working procedure for supporting and fixing the plurality of high frequency cable Y to rungs X ₁ of the structure X with supporting apparatus 1 having the above configuration.

First, the supporting member 6 of the fixing member 2 is connected to the structure X
Is disposed so as to straddle the horizontal rail X _1, and the horizontal rail X ₁ is positioned between the support bracket 6 and the hook 12 c of the contact bracket 12. When the fastening bolt 8 is tightened, the contact fitting 1
2 is advanced, the flange portion 6c of the support fitting 6 and the abutting member 12, lateral beam X ₁ is pinched between 6d. That is, when the fastening bolt 8 is strongly tightened,
Since the intermediate portion 12b and the flange portion 6c of the support fitting 6, and a 6d in surface contact with the rungs X _1, the fixing member 2 is firmly fixed to the rungs X _1.

The attachment to the rungs X ₁ of the support device 1, as can be each of the high-frequency cable Y to withstand wind pressure vibration, a relatively short interval (e.g. 1.0M～1.
(5m intervals).

[0027] Here, in a state in which temporarily stopped the support device 1 by tightening loose a fastening bolt 8 to the rungs X _1, even if the external force is applied a sudden in the support device 1, against member 12
Since the latching portion 12c of are hooked on rungs X _1, device 1
Tilting is restricted in this order, there is little possibility apparatus 1 from falling out rungs X _1. Further, the device 1 relative to the rungs X _1, after securing upside down in the state shown in FIG. 1, also loose fastening bolts 8 for such vibration, engaging portion 12c of the abutting member 12 rungs to be hooked on X _1, support device 1 is prevented from falling shifted off the rungs X _1. Furthermore, the fastening bolt 8 is not directly pressed against the rungs X _1, since member 12 against therebetween is interposed, no inconvenience such as paint peeling and scratch the rungs X _1. Therefore, even after the support device 1 is fixed, the occurrence of corrosion in that portion is suppressed for a long time, and the fastening bolt 8 is not loosened, so that a good fixed state is maintained.

[0028] After fixing the respective supporting apparatus 1 as described above in rung X ₁ at a predetermined interval, for each supporting device 1,
Spread the cut 20c using the cushion material 20,
A plurality (three in this case) of high-frequency cables Y are fitted into the cable insertion holes 20b.

The holding member 18 is opened in advance with the fastening screw 22 attached to the flange portion 18b of the holding member 18 with the O-ring 24, and the cushion member 20 in which the plurality of high-frequency cables Y are fitted is removed. After inserting between the holding metal fittings 16 and 18 to fit the holding metal fittings 16 and 18 into the orbital groove 20 a, the fastening screw 22 is screwed into the flange portion 16 b of the other metal fitting 16.

As a result, a plurality (three in this case) of high-frequency cables Y are sandwiched between the holding members 16 and 18 via the cushion member 20 at a time. Finally, the locking nut 14 and the like are tightened.

Thus, the plurality of high-frequency cables Y
Are sequentially supported and fixed to the structure X using the support device 1.

In the above embodiment, the cushion member 20 is formed with the cable insertion hole 20b having a diameter circumscribing the three bundled high-frequency cables Y, as shown in FIGS. 6 (a) to 6 (e).
As shown in (1), the shape of the cable insertion hole 20a can be appropriately set according to the number of the high-frequency cables Y.
Further, as shown in FIGS. 6 (f) and 6 (g), in a state in which a plurality of high-frequency cables Y ₁ and Y ₂ having different outer diameters are bundled, a diameter of a diameter circumscribing each of these cables Y ₁ and Y _2. It is also possible to form the cable insertion hole 20a.

[0033]

According to the present invention, the following effects can be obtained.

(1) According to the first aspect of the present invention, a plurality of high-frequency cables can be simultaneously supported and fixed along a structure such as a steel tower by one supporting device. The number used is greatly reduced, and the overall cost of cable installation can be kept low.

(2) According to the second aspect of the present invention, since the contact fitting can be hooked to the structure, even if an external force is suddenly applied in the temporarily fixed state of the support device, the tilting of the device is restricted. Therefore, there is little possibility that the device falls off from the structure, and the workability is improved. Further, even when the mounting direction of the device is reverse to the upside-down direction, since the contact fitting is hung on the structure, the device does not slip off the structure even if the fastening force is loosened after fixing. Further, since the fastening bolt is not directly pressed against the structure, the structure is not damaged, and the effect of preventing the fastening bolt from being loosened is favorably maintained for a long time.

(3) According to the third aspect of the present invention, after a plurality of high-frequency cables are fitted into a cushion material, the plurality of high-frequency cables are simultaneously inserted only by pulling them between a pair of holding members and tightening a fastening screw. It is not necessary to butt a pair of holding brackets separately and tighten them with bolts and nuts as in the past, which greatly reduces the time and effort required to attach a high-frequency cable to a structure using a large number of support devices. Can be omitted. Therefore, the work can be easily performed even in an unstable state at a high place, and the labor is reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a high-frequency cable is supported and fixed along a structure using a support device according to an embodiment of the present invention.

FIG. 2 is a side view showing a part of the support device shown in FIG.

FIG. 3 is a plan sectional view taken along the line AA of FIG. 2;

FIG. 4 is a perspective view of a metal fitting constituting the supporting device.

FIG. 5 is a perspective view of a cushion material constituting the support device.

FIG. 6 is a plan sectional view when a plurality of high-frequency cables having different numbers and outer diameters are held on a cushion material.

FIG. 7 is a perspective view showing a state in which a high-frequency cable is supported and fixed along a structure using a conventional support device.

FIG. 8 is a plan view of a conventional support device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Supporting device, 2 ... Fixed member, 4 ... Grasping member, 6 ... Support bracket, 6a, 6b ... Opposing part, 6c, 6d ... Flange part, 8 ...
Fastening bolts, 12 ... fittings, 16, 18 ... holding fittings,
20: cushion material, 20b: cable insertion hole, 20c ...
Notch.

Claims (3)

[Claims] 1. A high-frequency cable for supporting and fixing a high-frequency cable along a structure, comprising: a fixing member fixed to the structure; and a holding member integrally attached to the fixing member to grip a peripheral surface of the high-frequency cable. A supporting device for a high-frequency cable comprising: a holding member having a pair of substantially Ω-shaped holding members; and a cushion member interposed between the holding members. A high-frequency cable support device, wherein a cable insertion hole having a diameter circumscribing each high-frequency cable in which a plurality of cables are bundled is formed, and a cut is provided from the outer peripheral surface to the cable insertion hole. 2. The high-frequency cable support device according to claim 1, wherein the fixing member includes an inverted concave support member straddling a structure, and the support member holds a substantially L-shaped contact member. A fastening bolt is screwed into one side of the opposing portions of the support fitting that face each other with the structure interposed therebetween, and the contact fitting is interposed between the other end of the supporting fitting and the fastening bolt. A high-frequency cable support device. 3. The high-frequency cable support device according to claim 1, wherein the pair of presser fittings are connected to be openable and closable about one end of each butted butted portion as a fulcrum. High-frequency cable support device.