An overhead ground wire strain string hardware special maintenance tool

Abstract

An overhead ground wire strain string hardware special maintenance tool, its structure is: including connecting frame, wire clamping fixture, telescopic pull rod, connecting plate and connector; The middle of connecting frame is provided with clamping groove, and the wire clamping fixture is clamped at clamping groove, and the wire clamping fixture includes wire clamp and sleeve, and the wire clamp is installed in the clamping groove, and the sleeve is installed outside the clamping groove; The both ends of connecting frame are connected with connector respectively, one end of connector is connected with telescopic pull rod, the other end of telescopic pull rod is connected on connecting plate, and the both ends of connecting plate are connected with telescopic pull rod respectively.The beneficial effects of the present application are that: bilateral tension is more stable, telescopic pull rod is connected, the length of the tool is adjusted conveniently, the use scene of different sizes is convenient, the wire clamping fixture is clamped more stably, and the installation is convenient, the sleeve is set to make the wire clamp more stable in the clamping groove, the cable is fixed more safely during the maintenance of overhead ground wire strain string hardware, and the cable surface will not be damaged.

Description

Technical Field

[0001] This invention relates to the technical field of power grid maintenance tools, and in particular to a special maintenance tool for overhead ground wire tension string fittings. Background Technology

[0002] Overhead ground wire tension string fittings are a type of electrical fitting assembly used for connecting and fixing overhead ground wires and bearing the tension of the overhead ground wires. The main components include: tension clamps: used to clamp the overhead ground wire, bear the tension of the ground wire, and transfer it to the tower or other supporting structure; common types include compression type, bolt type, wedge type, and pre-stirred tension clamps; connecting fittings: fittings that connect the tension clamps to the insulator string or tower, such as ball-and-socket series connecting fittings (including ball-head hanging rings and cup-head hanging plates), ring-and-chain series connecting fittings (such as U-shaped hanging rings, right-angle rings, extension rings, etc.), and plate-and-plate series connecting fittings; insulators: some tension string fittings include insulators, used to isolate the overhead ground wire from metal components such as towers, preventing current leakage and short-circuit faults. Insulators are usually made of ceramic, glass, or composite materials, possessing high insulation performance and mechanical strength; adjusting plates: used to adjust the tension and sag of the overhead ground wire, ensuring that the ground wire maintains appropriate tension under different environmental and working conditions, such as the DB type convenient adjusting plate and the PT adjusting plate.

[0003] The function of tension string fittings for overhead ground wires is to withstand tension: During operation, overhead ground wires are subjected to tension generated by their own weight, wind loads, and other factors. Tension string fittings can reliably withstand these tensions, ensuring the stable operation of the overhead ground wire and preventing accidents such as breakage or detachment. They also provide connection and fixation: firmly connecting the overhead ground wire to the pole or tower ensures a stable and reliable connection between the ground wire and the tower, while also facilitating the installation and maintenance of the overhead ground wire. Furthermore, tension string fittings containing insulators effectively isolate the overhead ground wire from the tower, preventing current leakage to the ground through the tower and ensuring the safe operation of the power system. Therefore, the regular inspection and replacement of tension string fittings for overhead ground wires is a crucial task in the power grid.

[0004] Currently, there are many maintenance tools and methods that use wire clamps and tensioners together. However, wire clamps and tensioners only tighten a single wire, which is not very stable when replacing overhead ground wire tension string hardware during maintenance work. There may also be problems with the wire clamp slipping, affecting the maintenance and replacement work. There are also structural clamp and pressure plate connection structures to fix the cable, but the clamp and pressure plate connection structure has the problem of damaging the cable surface, thereby affecting the service life of the cable and increasing the risk of use. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a special maintenance tool for overhead ground wire tension string hardware, which solves the problems of instability and damage to the cable surface caused by the connection structure when inspecting and replacing overhead ground wire tension string hardware.

[0006] This invention provides a special maintenance tool for overhead ground wire tension string fittings, the structure of which includes a connecting frame, a wire clamping clamp, a telescopic rod, a connecting plate, and a connector; the connecting frame has a locking groove in the middle, at which the wire clamping clamp is engaged, the wire clamping clamp including a wire clamp and a clamping sleeve, the wire clamp being installed inside the locking groove and the clamping sleeve being installed outside the locking groove; the connectors are respectively connected to both ends of the connecting frame, the connectors being connected to one end of the telescopic rod, the other end of the telescopic rod being connected to the connecting plate, and the telescopic rod being connected to both ends of the connecting plate.

[0007] The connecting frame includes a snap-fit ​​groove, connecting arms, and connecting heads. The snap-fit ​​groove is a conical groove with an opening at its top. Connecting arms and connecting heads are symmetrically arranged on both sides of the snap-fit ​​groove. Each connecting arm includes 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 end of the horizontal arm is fixedly connected to the connecting head. The connecting head has a connecting hole. The snap-fit ​​groove opening is designed to allow the cable to pass through during snap-fit.

[0008] The slanted arm, horizontal arm, and connector are integrated into one unit.

[0009] The wire clamp is a double cone with a small diameter 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 parts. The snap-fit ​​groove 1 has a connecting lug 1 on both sides, and a vertical screw is provided on the connecting lug 1. The snap-fit ​​groove 2 has a connecting lug 2 on both sides, and a through hole corresponding to the screw is provided on the connecting lug 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.

[0010] The cable clamp is made of rubber or plastic.

[0011] The ferrule is correspondingly arranged with the snap-fit ​​groove and the inclined arm. The ferrule includes a conical sleeve that corresponds to the snap-fit ​​groove. The top of the sleeve has a mating plate corresponding to the opening of the snap-fit ​​groove. A corresponding cylindrical sleeve is provided at the small-diameter end of the sleeve. Angled snap-fit ​​grooves corresponding to the inclined arm are provided on both sides of the sleeve. A through-hole groove is provided at the bottom of the sleeve and the cylindrical sleeve. The opening groove is designed to allow the cable to pass through during snap-fit.

[0012] The telescopic rod includes a sleeve and an inner threaded rod. The inner threaded rod is disposed inside the sleeve, and a nut is sleeved on the inner threaded rod. One end of the nut is provided with a ratchet, and a ratchet wrench is provided on the ratchet. A connecting cylinder shaft is provided on one side of the ratchet wrench, and the connecting cylinder shaft and the sleeve are connected by a bearing. A first connecting plate is provided on one side of the inner threaded rod, and a second connecting plate is provided on one side of the sleeve. Both the first and second connecting plates are U-shaped connecting plates, and the U-shaped connecting plates are provided with connecting holes.

[0013] The connector includes a connecting plate three and a connecting ring. The connecting plate includes a symmetrically arranged ear plate one and ear plate two, which are fixedly connected by the connecting ring. Each ear plate one and ear plate two is provided with a corresponding connecting hole three.

[0014] The connector head is detachably connected to the connector by bolts; the connector is detachably connected to either the first or second connecting plate by bolts; and either the first or second connecting plate is detachably connected to the connecting plate by bolts.

[0015] The connecting plate is provided with a second connecting hole, which is located at both ends and the middle of the connecting plate. The connecting holes at both ends are connected to the telescopic tie rod, and the connecting hole in the middle is fixed to the crossbeam steel frame corresponding to the overhead ground wire tension string hardware by bolts during use.

[0016] The beneficial effects of this invention are as follows: the double-sided connection structure makes the double-sided tensioning more stable; the telescopic rod connection makes it easy to adjust the length of the tool, which is convenient for different size application scenarios; the tapered resistance wire clamp makes the wire clamping more stable and easy to install; the clamp sleeve makes the wire clamp more stable in the clamping groove; and the cable fixing is safer and will not damage the cable surface when the overhead ground wire tension string hardware is inspected. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the present invention;

[0018] Figure 2 This is a structural diagram of the present invention.

[0019] Figure 3 This is a partial structural diagram of the present invention;

[0020] Figure 4 This is a structural diagram of the card sleeve of the present invention;

[0021] Figure 5 This is a structural diagram of the telescopic tie rod of the present invention.

[0022] Figure 6 This is a structural diagram of the connector of the present invention;

[0023] In the diagram: 1. Connecting frame; 11. Snap-fit ​​groove; 111. Snap-fit ​​groove opening; 12. Connecting arm; 121. Horizontal arm; 122. Slanted arm; 13. Connecting head; 131. Connecting hole one; 2. Wire clamping fixture; 21. Wire clamp; 211. Snap-fit ​​groove one; 212. Snap-fit ​​groove two; 213. Connecting ear one; 214. Connecting ear two; 215. Screw; 216. Nut; 22. Sleeve; 221. Sleeve; 222. Connecting plate; 223. Opening 224. Groove; 225. Angled slot; 3. Cylindrical sleeve; 3. Telescopic rod; 31. Sleeve; 32. Internal threaded rod; 33. Connecting plate one; 34. Connecting plate two; 35. Ratchet wrench; 36. Threaded nut; 37. Ratchet; 38. Connecting cylinder shaft; 39. Bearing; 4. Connecting plate; 41. Connecting hole two; 5. Connector; 51. Connecting plate three; 511. Ear plate one; 512. Ear plate two; 513. Connecting hole three; 52. Connecting ring. Detailed Implementation

[0024] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1

[0026] Referring to the accompanying drawings and descriptions, this invention provides a special maintenance tool for overhead ground wire tension string fittings. Its structure includes a connecting frame, a wire clamping clamp, a telescopic rod, a connecting plate, and a connector. The connecting frame has a locking groove in the middle, where the wire clamping clamp is engaged. The wire clamping clamp 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. Connectors are connected to both ends of the connecting frame, and the connectors are connected to one end of the telescopic rod. The other end of the telescopic rod is connected to the connecting plate, and the telescopic rod is connected to both ends of the connecting plate.

[0027] Furthermore, the connecting frame includes a snap-fit ​​groove, connecting arms, and connecting heads. The snap-fit ​​groove is a conical groove with a groove opening at the top. Connecting arms and connecting heads 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 end of the horizontal arm is fixedly connected to the connecting head, and the connecting head has a connecting hole. The groove opening is designed for the cable to pass through during snap-fit.

[0028] Furthermore, the inclined arm, the horizontal arm, and the connector are integrated into one piece;

[0029] Furthermore, 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 with 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 parts. The snap-fit ​​groove 1 has a connecting lug 1 on both sides and a vertical screw on the connecting lug 1. The snap-fit ​​groove 2 has a connecting lug 2 on both sides corresponding to the connecting lug 1 and a through hole corresponding to the screw on the connecting lug 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.

[0030] Furthermore, the wire clip is made of plastic;

[0031] Furthermore, the sleeve is provided with a corresponding snap-fit ​​groove and a slanted arm. The sleeve includes a conical sleeve that is provided with a corresponding snap-fit ​​groove. The top of the sleeve is provided with a mating plate that corresponds 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 angular snap-fit ​​grooves that correspond to the slanted arm and engage with it. The bottom of the sleeve and the cylindrical sleeve is provided with a through opening groove. The opening groove is provided so that the cable can pass through when snapping.

[0032] Furthermore, the telescopic rod includes a sleeve and an inner threaded rod. The inner threaded rod is disposed inside the sleeve, and a nut is sleeved on the inner threaded rod. A ratchet is provided at one end of the nut, and a ratchet wrench is provided on the ratchet. A connecting cylinder shaft is provided on one side of the ratchet wrench, and the connecting cylinder shaft and the sleeve are connected by a bearing. A first connecting plate is provided on one side of the inner threaded rod, and a second connecting plate is provided on one side of the sleeve. Both the first and second connecting plates are U-shaped connecting plates, and the U-shaped connecting plates are provided with connecting holes.

[0033] Furthermore, the connector includes a connecting plate three and a connecting ring. The connecting plate includes a symmetrically arranged ear plate one and ear plate two, which are fixedly connected by the connecting ring. Both ear plate one and ear plate two are provided with corresponding connecting holes three.

[0034] Furthermore, the connector head is detachably connected to the connector by bolts; the connector and the first connecting plate are detachably connected by bolts; the second connecting plate is detachably connected to the connecting plate by bolts.

[0035] Furthermore, the connecting plate is provided with a second connecting hole, which is located at both ends and the middle of the connecting plate. The connecting holes at both ends are connected to the telescopic tie rod, and the connecting hole in the middle is fixed to the crossbeam steel frame corresponding to the overhead ground wire tension string hardware by bolts during use.

[0036] Example 2

[0037] Referring to the accompanying drawings and descriptions, this invention provides a special maintenance tool for overhead ground wire tension string fittings. Its structure includes a connecting frame, a wire clamping clamp, a telescopic rod, a connecting plate, and a connector. The connecting frame has a locking groove in the middle, where the wire clamping clamp is engaged. The wire clamping clamp 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. Connectors are connected to both ends of the connecting frame, and the connectors are connected to one end of the telescopic rod. The other end of the telescopic rod is connected to the connecting plate, and the telescopic rod is connected to both ends of the connecting plate.

[0038] Furthermore, the connecting frame includes a snap-fit ​​groove, connecting arms, and connecting heads. The snap-fit ​​groove is a conical groove with a groove opening at the top. Connecting arms and connecting heads 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 end of the horizontal arm is fixedly connected to the connecting head, and the connecting head has a connecting hole. The groove opening is designed for the cable to pass through during snap-fit.

[0039] Furthermore, the inclined arm, the horizontal arm, and the connector are integrated into one piece;

[0040] Furthermore, 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 with 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 parts. The snap-fit ​​groove 1 has a connecting lug 1 on both sides and a vertical screw on the connecting lug 1. The snap-fit ​​groove 2 has a connecting lug 2 on both sides corresponding to the connecting lug 1 and a through hole corresponding to the screw on the connecting lug 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.

[0041] Furthermore, the material of the wire clamp is rubber;

[0042] Furthermore, the sleeve is provided with a corresponding snap-fit ​​groove and a slanted arm. The sleeve includes a conical sleeve that is provided with a corresponding snap-fit ​​groove. The top of the sleeve is provided with a mating plate that corresponds 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 angular snap-fit ​​grooves that correspond to the slanted arm and engage with it. The bottom of the sleeve and the cylindrical sleeve is provided with a through opening groove. The opening groove is provided so that the cable can pass through when snapping.

[0043] Furthermore, the telescopic rod includes a sleeve and an inner threaded rod. The inner threaded rod is disposed inside the sleeve, and a nut is sleeved on the inner threaded rod. A ratchet is provided at one end of the nut, and a ratchet wrench is provided on the ratchet. A connecting cylinder shaft is provided on one side of the ratchet wrench, and the connecting cylinder shaft and the sleeve are connected by a bearing. A first connecting plate is provided on one side of the inner threaded rod, and a second connecting plate is provided on one side of the sleeve. Both the first and second connecting plates are U-shaped connecting plates, and the U-shaped connecting plates are provided with connecting holes.

[0044] Furthermore, the connector includes a connecting plate three and a connecting ring. The connecting plate includes a symmetrically arranged ear plate one and ear plate two, which are fixedly connected by the connecting ring. Both ear plate one and ear plate two are provided with corresponding connecting holes three.

[0045] Furthermore, the connector head is detachably connected to the connector via bolts; the connector and the second connecting plate are detachably connected via bolts; the first connecting plate is detachably connected to the connecting plate via bolts.

[0046] Furthermore, the connecting plate is provided with a second connecting hole, which is located at both ends and the middle of the connecting plate. The connecting holes at both ends are connected to the telescopic tie rod, and the connecting hole in the middle is fixed to the crossbeam steel frame corresponding to the overhead ground wire tension string hardware by bolts during use.

[0047] Specifically, during the maintenance of overhead ground wire tension string hardware, remove the clamping sleeve, take out the cable clamp, place the cable between the clamping slot one and the clamping slot two, and close and fix the clamping slot one and the clamping slot two with nuts. Insert the cable at the front end of the cable clamp into the clamping slot through the slot opening, then insert the cable clamp into the clamping slot. The 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. Then fix the connecting plate to the corresponding crossarm steel frame of the overhead ground wire tension string hardware with bolts. Tighten the telescopic rods using the ratchet wrenches on both sides, so that the entire tool tightens the cable, and then carry out the maintenance and replacement work.

Claims

1. A special maintenance tool for overhead ground wire tension string fittings, comprising a connecting frame, a conductor clamping clamp, a telescopic rod, a connecting plate, and a connector, characterized in that: The connecting frame has a snap-fit ​​groove in the middle, where a wire clamping fixture is snapped in place. The wire clamping fixture includes a wire clamp and a clamping sleeve. The wire clamp is installed inside the snap-fit ​​groove, and the clamping sleeve is installed outside the snap-fit ​​groove. Connectors are connected to both ends of the connecting frame. The connector is connected to one end of a telescopic rod, and the other end of the telescopic rod is connected to a connecting plate. The telescopic rod is connected to both ends of the connecting plate. The connecting frame includes a snap-fit ​​groove, a connecting arm, and a connecting head. The snap-fit ​​groove is a conical groove with a groove opening at the top. Connecting arms and connecting heads are symmetrically arranged on both sides of the snap-fit ​​groove. The connecting arm includes 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 end of the horizontal arm is fixedly connected to the connecting head, and the connecting head is provided with a connecting hole. 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 parts. The snap-fit ​​groove 1 has a connecting lug 1 on both sides and a vertical screw on the connecting lug 1. The snap-fit ​​groove 2 has a connecting lug 2 on both sides corresponding to the connecting lug 1 and a through hole corresponding to the screw on the connecting lug 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. The sleeve is correspondingly arranged with the snap-fit ​​groove and the inclined arm. The sleeve includes a conical sleeve, which is correspondingly arranged 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 that engage with the inclined arm. The bottom of the sleeve and the cylindrical sleeve are provided with through-hole slots. The telescopic rod includes a sleeve and an inner threaded rod. The inner threaded rod is arranged inside the sleeve. A nut is sleeved on the inner threaded rod. One end of the nut is provided with a ratchet. A ratchet wrench is provided on the ratchet. A connecting cylinder shaft is provided on one side of the ratchet wrench. The connecting cylinder shaft and the sleeve are connected by a bearing. A connecting plate one is provided on one side of the inner threaded rod, and a connecting plate two is provided on one side of the sleeve. Both connecting plate one and connecting plate two are U-shaped connecting plates with connecting holes.

2. The special maintenance tool for overhead ground wire tension string fittings according to claim 1, characterized in that: The cable clamp is made of rubber or plastic.

3. A special maintenance tool for overhead ground wire tension string fittings according to claim 2, characterized in that: The connector includes a connecting plate three and a connecting ring. The connecting plate three includes a symmetrically arranged ear plate one and ear plate two, which are fixedly connected by the connecting ring. Each ear plate one and ear plate two is provided with a corresponding connecting hole three.

4. A special maintenance tool for overhead ground wire tension string fittings according to claim 3, characterized in that: The connector head is detachably connected to the connector by bolts; the connector is detachably connected to either the first or second connecting plate by bolts; and either the first or second connecting plate is detachably connected to the connecting plate by bolts.

5. A special maintenance tool for overhead ground wire tension string fittings according to any one of claims 1-4, characterized in that: The connecting plate is provided with a second connecting hole, which is located at both ends and the middle of the connecting plate. The connecting holes at both ends are connected to the telescopic pull rod.

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