CN210404671U - 'three-span' ADSS optical cable wedge-shaped block clamping security fitting - Google Patents
'three-span' ADSS optical cable wedge-shaped block clamping security fitting Download PDFInfo
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- CN210404671U CN210404671U CN201920716363.3U CN201920716363U CN210404671U CN 210404671 U CN210404671 U CN 210404671U CN 201920716363 U CN201920716363 U CN 201920716363U CN 210404671 U CN210404671 U CN 210404671U
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- groove
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Abstract
The utility model discloses a three-span ADSS optical cable wedge clamping security fitting, wherein a wedge groove (9) is arranged on a metal body (1), and arc grooves (7) of two wedges (2) are oppositely arranged in the wedge groove (9) to form an optical cable slot; the ADSS optical cable (4) at the outer side of the optical cable clamp (18) is clamped in the optical cable groove; the metal body (1) is connected with a pull ring (3); one end of an insulating rope (16) is connected to the pull ring (3), and the other end of the insulating rope is connected to the cross arm (15); when the wedge-shaped block (2) moves towards the direction far away from the optical cable clamp (18), the ADSS optical cable (4) is clamped and fixed in the optical cable slot; the broken optical cable can be fixed at the original position when the optical cable breaks, namely a pair of safety ropes is added for the three-span optical cable, the occurrence of major traffic accidents caused by falling when the optical cable breaks is avoided, and the potential safety hazard of the three-span optical cable is solved.
Description
Technical Field
The patent relates to an ADSS optical cable security fitting arranged along an overhead transmission line, in particular to a three-span ADSS optical cable wedge clamping security fitting.
Background
According to the ' three-span ' important anti-accident measure ' (trial run) (national grid operation check 2016-. The ADSS optical cable is also called an all-dielectric self-supporting optical cable, the all-dielectric optical cable is made of all-dielectric materials, and the self-supporting optical cable means that a self-reinforcing member of the optical cable can bear self weight and external loads. Because the ADSS optical cable is generally erected by using the tower of the high-voltage transmission line and parallel to the transmission line conductor, the ADSS optical cable also has to comply with the requirements of ' three-span ' major anti-accident measures for overhead transmission lines '.
The ADSS optical cable is generally hung on a tower cross arm through optical cable clamps (including strain clamps or suspension clamps), the wind deflection angle of the ADSS optical cable is very large under the condition of strong wind, and when the wind speed is 30m/s, the wind deflection angle of the ADSS optical cable can reach 80 degrees, and the wind deflection angle of a lead is only about half of that of the optical cable; transverse wind blows to the ADSS optical cable, and the ADSS optical cable can generate wind vibration; therefore, the ADSS optical cable is subjected to fatigue damage at a hanging point, the ADSS optical cable is broken at the outer side of the cable clamp, and the broken optical cable falls in a three-span area, so that large traffic safety accidents and large social influences are caused.
In recent years, three-span optical cable breakage accidents occur all over the country, for example, in Jiangsu province, the three-span optical cable breakage accidents occur several times in the whole province range, and the traffic safety is threatened. One of the problems is that the optical cable falls due to accumulated snow in Jiangsu province, so that the normal operation of the electrified railway is seriously influenced, and the power grid and the society are seriously influenced. Therefore, Jiangsu electric power saving company requires that all three-span ADSS optical cables in each region need to be completely modified, and the current modification scheme mainly comprises the steps of tube penetration and underground burying or modification into OPGW optical cable penetration. However, in any of the reforming methods, the construction resistance is very high due to the problems of difficulty in construction, high construction cost and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at designing a "three span" ADSS optical cable wedge presss from both sides tight security armour clamp, can fix the optical cable that breaks at original position when the optical cable breaks, be equivalent to for "three span" optical cable increases a pair safety rope, stops the emergence of causing major traffic accident because of falling when the optical cable breaks, solves "three span" optical cable potential safety hazard.
The technical scheme of the utility model is that: the clamping security fitting of the wedge-shaped block of "three span" ADSS optical cable, its characteristic is: the wedge-shaped groove is matched with a wedge formed by combining the two wedge-shaped blocks; each wedge-shaped block is provided with a through arc-shaped groove, the arc size of each arc-shaped groove is matched with the outer diameter of the ADSS optical cable, and the arc-shaped grooves of the two wedge-shaped blocks are oppositely arranged in the wedge-shaped grooves to form optical cable slots; the ADSS optical cable outside the optical cable clamp is clamped in the optical cable groove; the large end of each wedge block and the large end opening of the wedge-shaped groove of the hardware fitting body face towards the optical cable clamp, and a wedge block screw hole is formed in the large end face of each wedge block; the end surface of the hardware fitting body facing the optical cable clamp is connected with a pull ring and provided with a hardware fitting screw hole; one end of the insulating rope is connected to the pull ring, and the other end of the insulating rope is connected to the cross arm; when the wedge-shaped blocks move towards the direction far away from the cable clamp, the gap between the two wedge-shaped blocks is reduced, the clamping degree of the formed optical cable groove on the ADSS optical cable is increased, and the ADSS optical cable is clamped and fixed in the optical cable groove;
the material of the wedge-shaped block is polytetrafluoroethylene or PEEK, and a sawtooth-shaped anti-skidding structure is arranged in the arc-shaped groove of the wedge-shaped block along the direction of the arc axis;
the tool comprises a tool body, a wedge-shaped groove and an ADSS optical cable, wherein the tool body is connected with the tool body through the tool body; one end of the insulating operating rod is an external thread end, and the other end of the insulating operating rod is connected with an internal thread quick connector; one end of the connecting block is provided with an internal thread hole, the connecting block is in threaded connection with one end of the double-head screw through the internal thread hole, the other end of the connecting block is connected with an internal thread quick connector, and the connecting block is connected with an external thread end of the insulating operating rod through the internal thread quick connector at the end part of the connecting block; the other end of the double-end screw is matched with the hardware fitting screw hole on the hardware fitting body.
The utility model has the advantages that: the wedge-shaped block clamping security fitting does not bear the weight of the optical cable in the normal state of the ADSS optical cable, but can bear the whole weight of the optical cable when the optical cable is broken, so that traffic, electric power and communication safety accidents caused by the drop of the ADSS optical cable are avoided; the security hardware fitting has simple structure and convenient operation and use; the problems of difficulty in optical cable, difficulty in construction, high transformation cost and the like in three-span rectification engineering are solved.
Drawings
FIG. 1: a front view of the optical cable wedge block clamping security hardware fitting and the optical cable connection state;
FIG. 2: the optical cable wedge block clamps the bottom view of the security hardware fitting and the optical cable in a connection state;
FIG. 3: a right view of the optical cable wedge block clamping security hardware fitting and the optical cable connection state; (ii) a
FIG. 4: a front view of the wedge block;
FIG. 5: a top view of the wedge block;
FIG. 6: a golden concrete front view;
FIG. 7: a top view of the hardware fitting body;
FIG. 8: the structure schematic diagram of the insulating operating rod;
FIG. 9: the structural schematic diagram of the special tool for connecting the screw rod of the lengthened operating rod is shown;
FIG. 10: the patent refers to the field of 'optical cables'.
In the figure, 1-a metal body, 2-a wedge block, 3-a pull ring, 4-an ADSS optical cable, 5-a hardware fitting screw hole, 6-a wedge block screw hole, 7-an arc groove, 8-a pull ring connecting hole, 9-a wedge groove, 10-an insulating operating rod, 11-an external thread end, 12-an internal thread quick connector, 13-a double-thread screw rod, 14-a connecting block, 15-a cross arm, 16-an insulating rope, 17-a vibration damper and 18-an optical cable clamp.
Detailed Description
The following detailed description of the present patent refers to the accompanying drawings and detailed description.
As shown in fig. 1 to 3, 6 and 7, the three-span ADSS optical cable wedge clamping security fitting of the present patent includes a metal fitting body 1 and two wedge blocks 2, a wedge groove 9 is provided on the fitting body 1, and the shape of the wedge groove 9 is adapted to the wedge shape of the two wedge blocks 2 after combination; the two wedges 2 are symmetrically distributed in the wedge groove 9, a through arc-shaped groove 7 is formed in each wedge 2, the arc size of each arc-shaped groove 7 is matched with the outer diameter of the ADSS optical cable 4, the arc-shaped grooves 7 of the two wedges 2 are oppositely arranged in the wedge groove 9 to form an optical cable slot, and the arc surfaces of the arc-shaped grooves 7 of the two wedges 2 are opposite and a gap is reserved between the end surfaces; the ADSS optical cable 4 outside the optical cable clamp 18 is clamped in an optical cable groove formed in the hardware fitting body 1; the large end of each wedge-shaped block 2 and the large end opening of the wedge-shaped groove 9 of the hardware fitting body 1 face the optical cable clamp 18, and a wedge-shaped block screw hole 6 is formed in the large end face of each wedge-shaped block 2; the end surface of the hardware fitting body 1 facing the optical cable clamp 18 is connected with a pull ring 3 and provided with a hardware fitting screw hole 5; be provided with two pull ring connecting holes 8 on the terminal surface of the 1 lower part of gold utensil body towards optical cable fastener 18, pull ring 3 is the U type, and the tip of two connecting rods of U type pull ring 3 is provided with the screw thread, and two connecting rod screw thread parts of pull ring 3 are connected with the nut respectively on end external screw thread upper portion after passing two pull ring connecting holes 8 on the body of gold 1 to connect pull ring 3 on the body of gold 1. One end of an insulating rope 16 is connected to the pull ring 3, and the other end is connected to the cross arm 15; when the wedge-shaped block 2 moves towards the direction far away from the optical cable clamp 18, the gap between the two opposite end faces of the two wedge-shaped blocks 2 becomes smaller, and the clamping degree of the formed optical cable groove on the ADSS optical cable 4 is increased, namely the ADSS optical cable 4 is clamped and fastened.
As shown in fig. 4 and 5, each wedge-shaped block 2 is rectangular, one surface of the wedge-shaped block is an inclined surface to form a wedge-shaped structure, and a positioning table is arranged at the large end of the wedge-shaped block and is matched with the structure of one end, facing the optical cable clamp 18, of the metal body 1; a wedge block screw hole 6 is formed in the large end face of each wedge block 2 and used for being connected with a special tool during installation and construction, a through arc-shaped groove 7 is formed in the side face opposite to the inclined face along the length direction, and a sawtooth-shaped anti-skidding structure is arranged in the arc-shaped groove 7 in the axial direction of an inner arc; the arc grooves 7 of the two wedge-shaped blocks 2 are oppositely arranged to form a cable slot, and the inner diameter of the cable slot is matched with the outer diameter of the ADSS optical cable 4; a gap is reserved between the arc-shaped grooves 7 of the two wedge-shaped blocks 2, and the clamping degree of the ADSS optical cable 4 is adjusted through the gap.
The material of the wedge-shaped block 2 is polytetrafluoroethylene or PEEK. The metal body 1 is made of titanium alloy or aluminum alloy, and is light in weight; the insulating rope 16 is made of aramid fiber.
As shown in fig. 8, the middle insulation part of the insulation operating rod 10 is generally made of bakelite, epoxy glass plastic pipe material, the length of a single insulation part is 1 to 2 meters, the insulation part accounts for more than 80% of the total length, the insulation material is required to be high-pressure resistant, high in strength, moisture-proof and light in weight, and can be independently operated by one person; the two ends of the insulating operating rod 10 are metal joints, the metal joints at the two ends are fixedly connected with the insulating rod in a crimping and riveting mode, one metal joint at one end is an external thread end 11, a structure matched with an internal thread quick joint 12 is arranged on the metal joint at the other end, the metal joint is connected with the internal thread quick joint 12 to form a quick joint, and the internal thread quick joint 12 is connected with the external thread end of another insulating operating rod 10, so that the insulating operating rod is combined and lengthened.
As shown in fig. 9, the special tool for connecting the lengthened operating rod screw consists of an insulating operating rod 10, a connecting block 14 and a double-end screw 13 which are rigidly connected in sequence, and is used for moving the metal body 1 to the outer side of the optical cable clamp 18 and enabling the wedge-shaped groove 9 of the metal body 1 to surround the ADSS optical cable 4 on the tower by an operator through the special tool for connecting the lengthened operating rod screw; one end of the connecting block 14 is provided with an internal threaded hole, and is in threaded connection with one end of the double-threaded screw 13 through the internal threaded hole; the other end of the connecting block 14 is provided with a structure matched with the internal thread quick-connection joint 12 and connected to the internal thread quick-connection joint 12, and the connecting block 14 is connected with the external thread end 11 of the insulating operating rod 10 through the internal thread quick-connection joint 12 at the end part of the connecting block; the other end of the double-end screw 13 is matched with the hardware fitting screw hole 5 on the hardware fitting body 1.
The use method of the three-span ADSS optical cable wedge-shaped block clamping security fitting comprises the following steps:
firstly, a pull ring 3 is connected to a metal body 1, one end of an insulating rope 6 is connected to the pull ring 3, a special tool for connecting a screw rod of a lengthened operating rod is ready to carry hardware fittings and the special tool for connecting the screw rod of the lengthened operating rod to climb a tower;
the special tool for connecting the lengthened operating rod screw is connected to a fitting screw hole 5 on a fitting through a double-end screw 13 at the end part of the special tool, an insulating operating rod 10 is used for lifting a fitting body 1 to be sent to the upper part of an ADSS optical cable 4 at the outer side of an optical cable clamp 18, a wedge-shaped groove 9 on the fitting body 1 is made to surround the ADSS optical cable 4, a wedge block 2 at one side is firstly inserted between the ADSS optical cable 4 and the wedge-shaped groove 9 through another special tool for connecting the lengthened operating rod screw, an arc-shaped groove 7 is tightly attached to one side of the ADSS optical cable 4, and the inclined plane of the wedge block 2 is attached to the inclined plane at; in the same method, the wedge-shaped block 2 at the other side is inserted into the other side of the ADSS optical cable 4 by using a special tool for connecting a lengthened operating rod screw; the wedge block 2 is pressed, so that the optical cable slot is clamped on the ADSS optical cable 4, and the ADSS optical cable 4 is clamped; then reversely rotating the screw rod of the lengthened operating rod to connect with a special tool to retreat;
and finally, connecting the other end of the insulating rope 16 to a cross arm 15 of the tower, and straightening the insulating rope 16.
As shown in fig. 10, which is a schematic view of the working state of the optical cable wedge clamping security fitting, the fitting body 1 is clamped on the ADSS optical cable 4 outside the optical cable clamp 18, according to past accident experience and theoretical analysis, the fitting body 1 is preferably clamped at a distance of about 80 to 100 mm from the end of the optical cable clamp 18, the fitting body 1 is located between the vibration damper 17 and the optical cable clamp 18, and the vibration damper 17 is spiral and clamped on the ADSS optical cable 4 to prevent and reduce vibration of the optical cable under the action of laminar wind. After the ADSS optical cable 4 is in service for a long time, fatigue fracture occurs at the joint of the ADSS optical cable 4 and the optical cable clamp 18, the fractured ADSS optical cable 4 is separated from the optical cable clamp 18 under the action of tension and gravity, the ADSS optical cable 4 moves towards the direction far away from the optical cable clamp 18, the fitting body 1 is pulled by the insulating rope 16, the wedge block 2 slightly moves along with the ADSS optical cable 4, so that the gap between the wedge blocks 2 is reduced, the clamping degree of the ADSS optical cable 4 in the optical cable groove is more fastened, the ADSS optical cable 4 is fastened in the optical cable groove of the fitting body 1, and the metal body 1 is connected to the cross arm 15 through the insulating rope 16, so that the fractured ADSS optical cable 4 cannot directly fall from the air but is basically fixed at the original position, and serious traffic and other electric power safety accidents caused by falling when the optical cable is fractured are avoided. The optical cable clamp 18 in this embodiment is a suspension clamp, and the same applies to strain clamps.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and not to limit the same. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
- "three span" ADSS optical cable wedge presss from both sides tight safety fitting, characterized by: the gold body comprises a gold body (1) and two wedge blocks (2), wherein a wedge groove (9) is formed in the gold body (1), and the shape of the wedge groove (9) is matched with the shape of a wedge formed by combining the two wedge blocks (2); a through arc-shaped groove (7) is formed in each wedge-shaped block (2), the arc size of each arc-shaped groove (7) is matched with the outer diameter of the ADSS optical cable (4), and the arc-shaped grooves (7) of the two wedge-shaped blocks (2) are oppositely arranged in the wedge-shaped grooves (9) to form optical cable slots; the ADSS optical cable (4) at the outer side of the optical cable clamp (18) is clamped in the optical cable groove; the large end of each wedge-shaped block (2) and the large end opening of the wedge-shaped groove (9) in the metal body (1) face the optical cable clamp (18), and a wedge-shaped block screw hole (6) is formed in the large end face of each wedge-shaped block (2); the end face, facing the optical cable clamp (18), of the metal body (1) is connected with a pull ring (3) and provided with a hardware fitting screw hole (5); one end of an insulating rope (16) is connected to the pull ring (3), and the other end of the insulating rope is connected to the cross arm (15); when the wedge-shaped blocks (2) move towards the direction far away from the optical cable clamp (18), the gap between the two wedge-shaped blocks (2) is reduced, the clamping degree of the formed optical cable groove on the ADSS optical cable (4) is increased, and the ADSS optical cable (4) is clamped and fixed in the optical cable groove.
- 2. The 'three-span' ADSS optical cable wedge clamping security fitting of claim 1, wherein: the wedge-shaped block (2) is made of polytetrafluoroethylene or PEEK, and a sawtooth-shaped anti-skidding structure is arranged in an arc-shaped groove (7) of the wedge-shaped block (2) along the direction of an arc axis.
- 3. The 'three-span' ADSS optical cable wedge clamping security fitting of claim 1, wherein: the device is characterized by further comprising a special lengthened operating rod screw rod connection tool consisting of an insulating operating rod (10), a connecting block (14) and a double-head screw rod (13) which are rigidly connected in sequence, and an operator moves the metal body (1) to the outer side of the optical cable clamp (18) on a tower through the special lengthened operating rod screw rod connection tool and enables the wedge-shaped groove (9) to surround the ADSS optical cable (4); one end of the insulating operating rod (10) is an external thread end (11), and the other end is connected with an internal thread quick connector (12); one end of the connecting block (14) is provided with an internal thread hole, the connecting block is in threaded connection with one end of the double-threaded screw (13) through the internal thread hole, the other end of the connecting block (14) is connected with an internal thread quick connector (12), and the connecting block (14) is connected with an external thread end (11) of the insulating operating rod (10) through the internal thread quick connector (12) at the end part of the connecting block; the other end of the double-end screw (13) is matched with the hardware fitting screw hole (5) on the metal body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920716363.3U CN210404671U (en) | 2019-05-17 | 2019-05-17 | 'three-span' ADSS optical cable wedge-shaped block clamping security fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920716363.3U CN210404671U (en) | 2019-05-17 | 2019-05-17 | 'three-span' ADSS optical cable wedge-shaped block clamping security fitting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210404671U true CN210404671U (en) | 2020-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920716363.3U Active CN210404671U (en) | 2019-05-17 | 2019-05-17 | 'three-span' ADSS optical cable wedge-shaped block clamping security fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210404671U (en) |
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2019
- 2019-05-17 CN CN201920716363.3U patent/CN210404671U/en active Active
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