Maintenance tool special for power transmission line optical cable strain insulator string hardware fitting

Abstract

The utility model discloses a special maintenance tool for power transmission line optical cable strain insulator string fittings, which comprises two groups of connecting frames, an optical cable clamping fixture and a movable pull rod, the connecting frames are respectively a connecting frame I and a connecting frame II, a clamping groove is arranged in the middle of each connecting frame, the optical cable clamping fixture is clamped at the clamping groove, and the movable pull rod is connected with the optical cable clamping fixture. The optical cable clamping fixture comprises a cable clamping device and a clamping sleeve, the cable clamping device is installed in the clamping groove, and the clamping sleeve is installed outside the clamping groove; the two ends of the first connecting frame and the two ends of the second connecting frame are connected through movable pull rods. According to the utility model, a double-side connection structure, double-side tensioning and two sets of optical cable clamping fixtures are arranged, so that the power transmission line optical cable strain insulator string fitting is safer and more stable during maintenance and replacement; the conical resistance optical cable clamping fixture is arranged, installation is rapid, the clamping sleeve enables the cable clamping device to be more stable in the clamping groove, the clamping ring is arranged in the clamping groove of the cable clamping device, an optical cable is clamped more stably, and the surface of the optical cable cannot be damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of power grid overhauling tool especially relates to a kind of special overhauling tool for transmission line optical cable strain string hardware. BACKGROUND

[0002] Transmission line optical cable strain string hardware is used to fix optical cable on the hanging point of corner, strain, terminal tower, and bear optical cable tension, and it is an important hardware, wherein strain clamp is core component, for directly holding optical cable, and transmitting tension to tower and other support structure, and common pre-stranding strain clamp is composed of inner stranding wire and outer stranding wire, inner stranding wire protects optical cable, and can avoid optical cable outer sheath being pulled by excessive stress, while transmitting axial tension;Outer stranding wire is directly connected with tower through embedding ring and other connecting hardware, and bears line load;Connecting hardware is used to connect strain clamp and tower or other hardware, such as U-shaped hanging ring, to ensure effective transmission of force and stable installation of entire strain string;Grounding drain wire is equipped in some strain string hardware, for introducing induced current or fault current on optical cable into ground, to ensure safety of equipment and personnel.

[0003] At present, there are many overhauling tools and overhauling methods, which use wire clamp and wire tightener in cooperation, but wire clamp and wire tightener are single-wire tensioning, and it is not stable when overhauling and replacing overhead ground wire strain string hardware in overhauling work, and there may be problem of wire clamp sliding, and wire clamp needs to be connected with safety rope when used, to avoid wire clamp sliding, and safety rope needs to be connected to fixed object, which is troublesome to install, and affects overhauling and replacing work;There are also structural clamps and pressing sheet connection structures for fixing optical cable, but clamps and pressing sheet connection structures have problem of damaging optical cable surface, thereby affecting service life of optical cable in later period, and increasing use risk. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in prior art, and provides a kind of special overhauling tool for transmission line optical cable strain string hardware.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a kind of transmission line optical cable strain string hardware special maintenance tool, including connecting frame, optical cable clamping fixture and movable pull rod, the connecting frame is provided with two groups, respectively connecting frame one and connecting frame two, the connecting frame middle is provided with the clamping groove, the clamping groove is clamped optical cable clamping fixture, the optical cable clamping fixture includes wire clamp and sleeve, the wire clamp is installed in clamping groove, and the sleeve is installed outside clamping groove;Connecting frame one and connecting frame two between two ends are connected by movable pull rod, and the movable pull rod includes connecting rod one and connecting rod two, and the connecting rod one and connecting rod two are movably connected.

[0007] The clamping groove is conical groove body, the top of the clamping groove is provided with a clamping groove opening, and the two sides of the clamping groove are symmetrically provided with connecting arms, the connecting arms include horizontal arms and inclined arms, one end of the inclined arm is connected to the side of the clamping groove, the other end of the inclined arm is connected to one end of the horizontal arm, and the other end of the horizontal arm is provided with a connecting hole. The clamping groove opening is provided so that the optical cable can pass through when clamping.

[0008] The connecting frame one includes clamping groove one, connecting arm one and connecting head, the top of the clamping groove one is provided with a clamping groove opening one, the two sides of the clamping groove one are symmetrically provided with connecting arms one, the end of the connecting arm one is provided with a connecting head, the connecting head is provided with a connecting hole two, and the connecting hole one is arranged at the position close to the connecting head of the connecting arm one.

[0009] The connecting frame two includes clamping groove two and connecting arm two, the top of the clamping groove two is provided with a clamping groove opening two, the two sides of the clamping groove two are symmetrically provided with connecting arms two, and the end of the connecting arm two is provided with a connecting hole three.

[0010] The wire clamp is a double cone with small diameter at both ends and large diameter in the middle, one end of the wire clamp is correspondingly arranged with the clamping groove, so that one end of the wire clamp can be inserted into the clamping groove for fixation, the wire clamp includes upper and lower corresponding clamping grooves one and two, a plurality of clamping rings are correspondingly arranged in the clamping grooves one and two, connecting ears one are arranged on the two sides of the clamping groove one, vertical screw rods are arranged on the connecting ears one, connecting ears two corresponding to the connecting ears one are arranged on the two sides of the clamping groove two, through holes corresponding to the screw rods are arranged on the connecting ears two, and the screw rods of the clamping groove one pass through the through holes of the clamping groove two to detachably connect the clamping grooves one and two by nuts.

[0011] The material of the wire clamp is rubber or plastic.

[0012] The sleeve is provided with a corresponding butt joint plate at the top of the sleeve, a corresponding cylindrical sleeve is arranged at the small-diameter end of the sleeve, and corresponding inclined-angle clamping grooves are arranged at the two sides of the sleeve.

[0013] One end of the first connecting rod is provided with a first connecting clamping plate, the other end of the first connecting rod is provided with a fourth connecting hole, the two ends of the second connecting rod are respectively provided with a second connecting clamping plate and a third connecting clamping plate, the fourth connecting hole is rotatably connected with one end of the second connecting rod through bolts, the first connecting clamping plate is detachably connected at the first connecting hole of the first connecting frame through bolts, and one end of the second connecting rod is detachably connected at the third connecting hole of the second connecting frame through bolts.

[0014] The second connecting hole is detachably connected with a connector through bolts, the connector comprises a fourth connecting clamping plate and a connecting ring, the fourth connecting clamping plate comprises symmetrically arranged first and second ear plates, the first and second ear plates are fixedly connected through the connecting ring, corresponding through holes are arranged on the first and second ear plates, and the second connecting hole is arranged in correspondence with the through holes.

[0015] The utility model discloses the beneficial effects are as follows: bilateral connection structure is set up, and bilateral tension is more stable, the taper resistance cable clamp fixture is set up, and installation is quick, the sleeve is set up, makes the cable clamp more stable in the clamping groove, and two sets of cable clamp fixtures are set up in the two connecting frames, when the transmission line cable strain insulator clamp is overhauled and replaced, it is more safe and stable, can replace the safety rope, does not influence the overhauling and replacement work, and installation is more convenient, the clamping groove of cable clamp is provided with the clamping ring, and the cable clamp is more stable, and the surface of cable is not damaged. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structural drawing of the utility model;

[0017] Figure 2 It is the split structure drawing of the first connecting frame of the utility model;

[0018] Figure 3 It is the split structure drawing of the second connecting frame of the utility model;

[0019] Figure 4 It is the sleeve structure drawing of the utility model;

[0020] Figure 5 It is the split structure drawing of the movable pull rod of the utility model;

[0021] In the diagram: 1. Connecting frame one; 11. Snap-fit ​​slot one; 111. Snap-fit ​​slot opening one; 12. Connecting arm one; 13. Connecting hole one; 14. Connector; 15. Connecting hole two; 2. Connecting frame two; 21. Snap-fit ​​slot two; 211. Snap-fit ​​slot opening two; 22. Connecting arm two; 23. Connecting hole three; 3. Optical cable clamping clamp; 31. Cable clamp; 311. Snap-fit ​​slot one; 312. Snap-fit ​​slot two; 313. Connecting ear one; 314. Connecting ear two; 315. Screw; 316. Nut; 317. Snap-fit ​​ring; 32. Sleeve; 321. Sleeve; 322. Butt plate; 323. Opening slot; 324. Angled slot; 325. Cylindrical sleeve; 4. Movable pull rod; 41. Connecting rod one; 411. Connecting plate one; 412. Connecting hole four; 42. Connecting rod two; 421. Connecting plate two; 422. Connecting plate three; 5. Connector; 51. Connecting plate four; 52. Connecting ring. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0023] Example 1

[0024] Referring to the accompanying drawings and descriptions, this utility model provides a special maintenance tool for tension cables of transmission lines. Its structure includes a connecting frame, a cable clamping fixture, and a movable pull rod. The connecting frame has a locking groove in the middle, where the cable clamping fixture is engaged. The cable clamping fixture includes a wire clamp and a sleeve; the wire clamp is installed inside the locking groove, and the sleeve is installed outside the locking groove. The two ends of the first connecting frame and the second connecting frame are connected by the movable pull rod.

[0025] The snap-fit ​​groove is a conical groove with a snap-fit ​​opening at the top. Connecting arms are symmetrically arranged on both sides of the snap-fit ​​groove. The connecting arms include a horizontal arm and a diagonal arm. One end of the diagonal arm is connected to the side of the snap-fit ​​groove, and the other end of the diagonal arm is connected to one end of the horizontal arm. The other end of the horizontal arm is provided with a connecting hole. The snap-fit ​​opening is designed to allow the optical cable to pass through during snap-fit.

[0026] The connecting frame is provided in two sets, namely connecting frame one and connecting frame two. Connecting frame one includes a snap-fit ​​groove one, a connecting arm one, and a connecting head. The top of snap-fit ​​groove one is provided with a snap-fit ​​opening one. Connecting arms one are symmetrically arranged on both sides of snap-fit ​​groove one. The end of connecting arm one is provided with a connecting head. The connecting head is provided with a connecting hole two. Connecting arm one is provided with a connecting hole one near the connecting head. Connecting frame two includes a snap-fit ​​groove two and a connecting arm two. The top of snap-fit ​​groove two is provided with a snap-fit ​​opening two. Connecting arms two are symmetrically arranged on both sides of snap-fit ​​groove two. The end of connecting arm two is provided with a connecting hole three.

[0027] The wire clamp is a double cone with small diameters at both ends and a large diameter in the middle. One end of the wire clamp is correspondingly set in the locking slot, allowing it to be inserted and fixed in place. The wire clamp includes a locking slot 1 and a locking slot 2 with corresponding upper and lower parts. Multiple locking rings are correspondingly set in the locking slot 1 and the locking slot 2. Connecting lug 1 is set on both sides of the locking slot 1, and a vertical screw is set on the connecting lug 1. Connecting lug 2 is set on both sides of the locking slot 2, and a through hole corresponding to the screw is set on the connecting lug 1. The screw of the locking slot 1 passes through. The through hole of slot two allows slot one and slot two to be detachably connected by a nut; the material of the cable clamp is rubber or plastic; the sleeve is set with corresponding slots and connecting brackets, the sleeve includes a conical sleeve with corresponding slots, the top of the sleeve has a mating plate corresponding to the slot opening, the small diameter end of the sleeve has a corresponding cylindrical sleeve, the two sides of the sleeve have beveled slots corresponding to the inclined arms, and the bottom of the sleeve and the cylindrical sleeve has a through opening slot; the opening slot is designed to allow the optical cable to pass through during clamping.

[0028] The movable pull rod includes connecting rod one and connecting rod two, which are movably connected. One end of connecting rod one is provided with connecting plate one, and the other end of connecting rod one is provided with connecting hole four. Connecting plate two and connecting plate three are provided at both ends of connecting rod two, respectively. Connecting hole four is rotatably connected to one end of connecting rod two by bolts. Connecting plate one is detachably connected to one connecting hole of connecting frame one by bolts, and one end of connecting rod two is detachably connected to one connecting hole three of connecting frame two by bolts. Connector is detachably connected to connecting hole two by bolts. Connector includes connecting plate four and connecting ring. Connecting plate four includes symmetrically arranged ear plate one and ear plate two, which are fixedly connected by connecting ring. Ear plate one and ear plate two are provided with corresponding through holes, and connecting hole two is provided with corresponding through holes. Connector is used to install a tensioner for maintenance.

[0029] Specifically, during the maintenance of the tension string hardware for optical cables in transmission lines, remove the two clamping sleeves and take out the cable clamps. Install the two cable clamps one after the other on the optical cable, with the distance between them less than the distance when the movable tie rod is horizontal. Place the optical cable between the first and second clamping slots of the cable clamps and close and fix the first and second clamping slots with nuts. Insert the optical cable at the front end of the cable clamp into the clamping slot through the opening of the clamping slot, and then insert the cable clamp into the clamping slot. The optical cable at the front end of the clamping slot enters the clamping sleeve through the opening slot under the clamping sleeve. Push the clamping sleeve back and insert it into the clamping slot and the inclined arm. After the two optical cable clamping clamps are installed, connect the tensioner through the connectors on both sides and fix the other end of the tensioner to the crossarm steel frame corresponding to the tension string hardware for optical cables in transmission lines. Tighten the tensioner on both sides to make the entire tool tighten the optical cable for maintenance and replacement work.

Claims

1. A special maintenance tool for tension string fittings of optical cables in power transmission lines, comprising a connecting frame, optical cable clamping clamps, and a movable pull rod, characterized in that: The connecting frame is provided in two sets, namely connecting frame one and connecting frame two. A snap-fit ​​groove is provided in the middle of the connecting frame. The snap-fit ​​groove is used to snap-fit ​​an optical cable clamping device. The optical cable clamping device includes a wire clamp and a clamp sleeve. The wire clamp is installed in the snap-fit ​​groove, and the clamp sleeve is installed outside the snap-fit ​​groove. The two ends of connecting frame one and connecting frame two are connected by a movable pull rod. The movable pull rod includes connecting rod one and connecting rod two, and connecting rod one and connecting rod two are movably connected.

2. The special maintenance tool for tension string fittings of optical cables in transmission lines according to claim 1, characterized in that: The snap-fit ​​groove is a conical groove with a groove opening at the top. Connecting arms are symmetrically arranged on both sides of the snap-fit ​​groove. Each connecting arm includes a horizontal arm and an oblique arm. One end of the oblique arm is connected to the side of the snap-fit ​​groove, and the other end of the oblique arm is connected to one end of the horizontal arm. A connecting hole is provided at the other end of the horizontal arm.

3. A special maintenance tool for tension string fittings of optical cables in transmission lines according to claim 2, characterized in that: The connecting frame includes a snap-fit ​​groove, a connecting arm, and a connector. The top of the snap-fit ​​groove has a snap-fit ​​opening. The two sides of the snap-fit ​​groove are symmetrically arranged with connecting arms. The end of the connecting arm is provided with a connector. The connector is provided with a connecting hole. The connecting arm is provided with a connecting hole near the connector.

4. A special maintenance tool for tension string fittings of optical cables in transmission lines according to claim 3, characterized in that: The second connecting frame includes a second snap-fit ​​groove and a second connecting arm. The top of the second snap-fit ​​groove is provided with a second snap-fit ​​opening. The second connecting arm is symmetrically arranged on both sides of the second snap-fit ​​groove. The end of the second connecting arm is provided with a third connecting hole.

5. A special maintenance tool for tension string fittings of optical cables in transmission lines according to claim 1, characterized in that: The wire clamp is a double cone with small diameters at both ends and a large diameter in the middle. One end of the wire clamp is correspondingly set in the snap-fit ​​groove, so that one end of the wire clamp can be inserted into the snap-fit ​​groove for fixation. The wire clamp includes a snap-fit ​​groove 1 and a snap-fit ​​groove 2 with corresponding upper and lower snap-fit ​​rings in the snap-fit ​​groove 1 and the snap-fit ​​groove 2. The snap-fit ​​groove 1 has connecting lugs 1 on both sides, and a vertical screw is provided on the connecting lugs 1. The snap-fit ​​groove 2 has connecting lugs 2 on both sides, and a through hole corresponding to the screw is provided on the connecting lugs 2. The screw of the snap-fit ​​groove 1 passes through the through hole of the snap-fit ​​groove 2 and the snap-fit ​​groove 1 and the snap-fit ​​groove 2 are detachably connected by a nut.

6. A special maintenance tool for tension string fittings of optical cables in transmission lines according to claim 5, characterized in that: The cable clamp is made of rubber or plastic.

7. A special maintenance tool for tension string fittings of optical cables in transmission lines according to claim 2, characterized in that: The sleeve is correspondingly provided with the snap-fit ​​groove and the connecting frame. The sleeve includes a conical sleeve. The sleeve is correspondingly provided with the snap-fit ​​groove. The top of the sleeve is provided with a mating plate corresponding to the opening of the snap-fit ​​groove. The small diameter end of the sleeve is provided with a corresponding cylindrical sleeve. The two sides of the sleeve are provided with angled snap-fit ​​grooves corresponding to the inclined arm. The bottom of the sleeve and the cylindrical sleeve are provided with through opening grooves.

8. A special maintenance tool for tension string fittings of optical cables in transmission lines according to claim 4, characterized in that: One end of the connecting rod is provided with a connecting plate 1, and the other end of the connecting rod is provided with a connecting hole 4. The two ends of the connecting rod 2 are respectively provided with a connecting plate 2 and a connecting plate 3. The connecting hole 4 is rotatably connected to one end of the connecting rod 2 by bolts. The connecting plate 1 is detachably connected to a connecting hole of the connecting frame 1 by bolts, and one end of the connecting rod 2 is detachably connected to the connecting hole 3 of the connecting frame 2 by bolts.

9. A special maintenance tool for tension string fittings of optical cables in transmission lines according to claim 3, characterized in that: The connector is detachably connected to the second connection hole by bolts. The connector includes a fourth connection plate and a connecting ring. The fourth connection plate includes a first ear plate and a second ear plate that are symmetrically arranged. The first ear plate and the second ear plate are fixedly connected by the connecting ring. The first ear plate and the second ear plate are each provided with a corresponding through hole. The second connection hole is provided with a corresponding through hole.

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