Overhaul tool special for overhead ground wire strain insulator string hardware

Abstract

The invention relates to a special maintenance tool for overhead ground wire tension string hardware. The special maintenance tool structurally comprises a connecting frame, a wire clamping fixture, a telescopic pull rod, a connecting plate and a connector, a clamping groove is formed in the middle of the connecting frame, a wire clamping fixture is clamped at the clamping groove, the wire clamping fixture comprises a wire clamping device and a clamping sleeve, the wire clamping device is installed in the clamping groove, and the clamping sleeve is installed outside the clamping groove; the two ends of the connecting frame are connected with the connectors respectively, the connectors are connected with one ends of the telescopic pull rods, the other ends of the telescopic pull rods are connected to the connecting plate, and the two ends of the connecting plate are connected with the telescopic pull rods respectively. The beneficial effects of the invention are that two-side tensioning is more stable, the telescopic pull rod is connected, the length of the tool is convenient to adjust, use scenes of different sizes are facilitated, the conical resistance wire clamping fixture is more stable in wire clamping and convenient to install, the clamping sleeve is arranged, so that the wire clamping device is more stable in the clamping groove, and when the overhead ground wire tension string hardware fitting is overhauled, the maintenance efficiency is improved. The cable is fixed more safely, and the surface of the cable is not damaged.

Description

Technical Field

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

[0002] Overhead ground wire tension string hardware is a combination of electrical hardware used to connect and fix overhead ground wires and withstand the tension of overhead ground wires. The main components include tension clamps: used to clamp overhead ground wires, withstand the tension of the ground wires, and transmit it to poles or other supporting structures. Common types include compression type, bolt type, wedge type and pre-twisted tension clamps; connecting hardware: hardware that connects the tension clamp to the insulator string or pole tower, such as ball-and-socket series connecting hardware (including ball head hanging rings and bowl head hanging plates, etc.), ring-chain series connecting hardware (such as U-shaped hanging rings, right-angle rings, extension rings, etc.), and plate-plate series connecting hardware; insulators: some tension string hardware includes insulators, which are used to isolate overhead ground wires from metal components such as poles and towers to prevent current leakage and short-circuit faults. Insulators are usually made of ceramic, glass or composite materials and have high insulation performance and mechanical strength; adjustment plates: used to adjust the tension and sag of overhead ground wires to ensure that the ground wire maintains appropriate tension under different environments and working conditions, such as db-type convenient adjustment plates and pt adjustment plates.

[0003] The function of the overhead ground wire tension fittings is to withstand tension: during operation, the overhead ground wire will be subject to tension generated by its own gravity, wind load and other factors. The tension fittings can reliably withstand these tensions, ensure the stable operation of the overhead ground wire, and prevent accidents such as breakage or falling off; connection and fixation: firmly connect the overhead ground wire to the pole tower to ensure that the connection between the ground wire and the pole tower is stable and reliable, and it is also convenient for the installation and maintenance of the overhead ground wire; insulation protection: the tension fittings containing insulators can effectively isolate the overhead ground wire from the pole tower, prevent current from leaking to the earth through the pole tower, and ensure the safe operation of the power system; therefore, regular inspection and replacement of overhead ground wire tension fittings is a very important task in the power grid.

[0004] Currently, there are many maintenance tools and methods that are used in conjunction with wire grippers and wire tensioners. However, wire grippers and wire tensioners are used for single-wire tensioning. They are not very stable when replacing the overhead ground wire tension fittings during maintenance work. There may also be problems with wire grippers sliding, affecting the maintenance and replacement work. There are also structural card and pressure plate connection structures to fix cables, but the card and pressure plate connection structures have the problem of damaging the cable surface, thereby affecting the later service life of the cables and increasing the risk of use. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a special maintenance tool for overhead ground wire tension string fittings to solve the problems of instability during maintenance and replacement of overhead ground wire tension string fittings and damage to the cable surface in the connection structure.

[0006] The present invention provides a special maintenance tool for overhead ground wire tension string hardware, which has the following structure: comprising a connecting frame, a conductor clamping fixture, a telescopic pull rod, a connecting plate and a connector; a clamping groove is arranged in the middle of the connecting frame, and the conductor clamping fixture is clamped at the clamping groove, and the conductor clamping fixture comprises a wire clamp and a clamping sleeve, the wire clamp is installed in the clamping groove, and the clamping sleeve is installed outside the clamping groove; the two ends of the connecting frame are respectively connected to connectors, the connector is connected to one end of the telescopic pull rod, the other end of the telescopic pull rod is connected to the connecting plate, and the two ends of the connecting plate are respectively connected to the telescopic pull rod.

[0007] The connecting frame includes a clamping slot, a connecting arm and a connecting head. The clamping slot is a conical slot body. The top of the clamping slot is provided with a clamping slot opening. The two sides of the clamping slot are symmetrically provided with connecting arms and connecting heads. The connecting arms include a horizontal arm and an oblique arm. One end of the oblique arm is connected to the side of the clamping slot, and the other end of the oblique 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 1. The clamping slot opening is provided for the cable to pass through during clamping.

[0008] The oblique arm, the horizontal arm and the connecting head are integrally arranged.

[0009] The wire holder is a double cone with small diameters at both ends and a large diameter in the middle. One end of the wire holder is arranged corresponding to the clamping slot, so that one end of the wire holder can be inserted into the clamping slot and fixed. The wire holder includes a clamping slot one and a clamping slot two corresponding to the upper and lower parts. A connecting ear one is arranged on both sides of the clamping slot one, and a vertical screw is arranged on the connecting ear one. A connecting ear two corresponding to the connecting ear one is arranged on both sides of the clamping slot two, and a through hole corresponding to the screw is arranged on the connecting ear two. The screw of the clamping slot one passes through the through hole of the clamping slot two, and the clamping slot one and the clamping slot two are detachably connected through a nut.

[0010] The material of the wire clamp is rubber or plastic.

[0011] The ferrule is arranged corresponding to the clamping groove and the oblique arm, and the ferrule includes a conical sleeve. The sleeve is arranged corresponding to the clamping groove, a docking plate corresponding to the clamping groove opening is arranged at the top of the sleeve, a corresponding cylindrical sleeve is arranged at the small diameter end of the sleeve, and oblique angle clamping grooves corresponding to the oblique arm are arranged on both sides of the sleeve, and a through opening groove is arranged at the bottom of the sleeve and the cylindrical sleeve. The opening groove is arranged for the cable to pass through during clamping.

[0012] The telescopic pull rod includes a sleeve and an inner screw rod, the inner screw rod is arranged in the sleeve, the inner screw rod is sleeved with a nut, a ratchet is arranged at one end of the nut, a ratchet wrench is arranged on the ratchet, a connecting shaft is arranged on one side of the ratchet wrench, and the connecting shaft and the sleeve are connected by a bearing; a connecting clamping plate 1 is arranged on one side of the inner screw rod, and a connecting clamping plate 2 is arranged on one side of the sleeve, and both the connecting clamping plate 1 and the connecting clamping plate 2 are U-shaped connecting clamping plates, and the U-shaped connecting clamping plate is provided with connecting holes on the clamping plates.

[0013] The connector includes a connecting card plate three and a connecting ring. The connecting card plate includes an ear plate one and an ear plate two that are symmetrically arranged. The ear plate one and the ear plate two are fixedly connected via a connecting ring. The ear plate one and the ear plate two are both provided with corresponding connecting holes three.

[0014] The connecting head is detachably connected to the connector via bolts; the connector is detachably connected to the connecting card plate 1 or the connecting card plate 2 via bolts; the connecting card plate 1 or the connecting card plate 2 is detachably connected to the connecting plate via bolts.

[0015] The connecting plate is provided with connecting holes 2, which are arranged at both ends and the middle position of the connecting plate. The connecting holes at both ends are connected to the telescopic pull rod, and the middle connecting hole is fixed to the cross arm steel frame corresponding to the overhead ground wire tension string hardware by bolts when in use.

[0016] The beneficial effects of the present invention are: a double-sided connection structure is set up, and the double-sided tensioning is more stable; the telescopic pull rod connection is convenient for adjusting the length of the tool and is convenient for use in scenarios of different sizes; the conical resistance wire clamping fixture makes the wire clamping more stable and easy to install; the provision of a clamping sleeve makes the wire clamp more stable in the clamping groove; when the overhead ground wire tension string hardware is inspected and repaired, the cable is fixed more safely and will not damage the cable surface. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a split structure diagram of the present invention;

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

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

[0021] Figure 5 This is a disassembled structural diagram of the telescopic pull rod of the present invention;

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

[0023] In the figure: 1, connecting frame, 11, card slot; 111, card slot opening; 12, connecting arm; 121, horizontal arm; 122, oblique arm; 13, connector; 131, connecting hole 1; 2, wire clamping fixture, 21, wire clamp; 211, card slot 1; 212, card slot 2; 213, connecting ear 1; 214, connecting ear 2; 215, screw; 216, nut; 22, card sleeve; 221, sleeve; 222, docking plate; 223, opening Mouth groove; 224, bevel slot; 225, cylinder sleeve; 3, telescopic pull rod, 31, sleeve; 32, inner screw; 33, connecting card plate one; 34, connecting card plate two; 35, ratchet wrench; 36, nut; 37, ratchet; 38, connecting shaft; 39, bearing; 4, connecting plate; 41, connecting hole two; 5, connector; 51, connecting card plate three; 511, ear plate one; 512, ear plate two; 513, connecting hole three; 52, connecting ring. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Example 1

[0026] In combination with the drawings and the description of the drawings, the present invention provides a special maintenance tool for overhead ground wire tension string hardware, which has the following structure: comprising a connecting frame, a conductor clamping fixture, a telescopic pull rod, a connecting plate and a connector; a clamping groove is arranged in the middle of the connecting frame, the conductor clamping fixture is clamped at the clamping groove, the conductor clamping fixture comprises a wire clamp and a clamping sleeve, the wire clamp is installed in the clamping groove, and the clamping sleeve is installed outside the clamping groove; the two ends of the connecting frame are respectively connected to the connector, the connector is connected to one end of the telescopic pull rod, the other end of the telescopic pull rod is connected to the connecting plate, and the two ends of the connecting plate are respectively connected to the telescopic pull rod;

[0027] Further, the connecting frame includes a clamping slot, a connecting arm and a connecting head, the clamping slot is a conical slot body, a clamping slot opening is arranged at the top of the clamping slot, connecting arms and connecting heads are symmetrically arranged on both sides of the clamping slot, the connecting arms include a horizontal arm and an oblique arm, one end of the oblique arm is connected to the side of the clamping slot, the other end of the oblique arm is connected to one end of the horizontal arm, the end of the horizontal arm is fixedly connected to the connecting head, and a connecting hole 1 is arranged on the connecting head; the clamping slot opening is arranged for the cable to pass through when clamping;

[0028] Furthermore, the oblique arm, the horizontal arm and the connecting head are integrally arranged;

[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 arranged corresponding to the clamping groove, so that one end of the wire clamp can be inserted into the clamping groove and fixed. The wire clamp includes a clamping groove 1 and a clamping groove 2 corresponding to each other above and below. A connecting ear 1 is arranged on both sides of the clamping groove 1, and a vertical screw rod is arranged on the connecting ear 1. A connecting ear 2 corresponding to the connecting ear 1 is arranged on both sides of the clamping groove 2, and a through hole corresponding to the screw rod is arranged on the connecting ear 2. The screw rod of the clamping groove 1 passes through the through hole of the clamping groove 2, and the clamping groove 1 and the clamping groove 2 are detachably connected through a nut;

[0030] Furthermore, the material of the wire clamp is plastic;

[0031] Further, the ferrule is arranged corresponding to the clamping groove and the oblique arm, the ferrule includes a conical sleeve, the sleeve is arranged corresponding to the clamping groove, a docking plate corresponding to the opening of the clamping groove is arranged at the top of the sleeve, a corresponding cylindrical sleeve is arranged at the small diameter end of the sleeve, oblique angle clamping grooves corresponding to the oblique arm are arranged on both sides of the sleeve, and a through opening groove is arranged at the bottom of the sleeve and the cylindrical sleeve; the opening groove is arranged for the cable to pass through when clamping;

[0032] Furthermore, the telescopic pull rod comprises a sleeve and an inner screw rod, the inner screw rod is arranged in the sleeve, a nut is sleeved on the inner screw rod, a ratchet is arranged at one end of the nut, a ratchet wrench is arranged on the ratchet, a connecting cylinder shaft is arranged on one side of the ratchet wrench, and the connecting cylinder shaft and the sleeve are connected through a bearing; a connecting card plate 1 is arranged on one side of the inner screw rod, and a connecting card plate 2 is arranged on one side of the sleeve, both the connecting card plate 1 and the connecting card plate 2 are U-shaped connecting card plates, and the U-shaped connecting card plate is provided with connecting holes on the card plate;

[0033] Further, the connector includes a connecting card plate three and a connecting ring, the connecting card plate includes a symmetrically arranged ear plate one and ear plate two, the ear plate one and the ear plate two are fixedly connected by the connecting ring, and the ear plate one and the ear plate two are both provided with corresponding connecting holes three;

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

[0035] Furthermore, the connecting plate is provided with connecting hole two, which are arranged at both ends and the middle position of the connecting plate. The connecting holes at both ends are connected to the telescopic pull rod, and the middle connecting hole is fixed to the cross arm steel frame corresponding to the overhead ground wire tension string hardware by bolts when in use.

[0036] Example 2

[0037] In combination with the drawings and the description of the drawings, the present invention provides a special maintenance tool for overhead ground wire tension string hardware, which has the following structure: comprising a connecting frame, a conductor clamping fixture, a telescopic pull rod, a connecting plate and a connector; a clamping groove is arranged in the middle of the connecting frame, the conductor clamping fixture is clamped at the clamping groove, the conductor clamping fixture comprises a wire clamp and a clamping sleeve, the wire clamp is installed in the clamping groove, and the clamping sleeve is installed outside the clamping groove; the two ends of the connecting frame are respectively connected to the connector, the connector is connected to one end of the telescopic pull rod, the other end of the telescopic pull rod is connected to the connecting plate, and the two ends of the connecting plate are respectively connected to the telescopic pull rod;

[0038] Further, the connecting frame includes a clamping slot, a connecting arm and a connecting head, the clamping slot is a conical slot body, a clamping slot opening is arranged at the top of the clamping slot, connecting arms and connecting heads are symmetrically arranged on both sides of the clamping slot, the connecting arms include a horizontal arm and an oblique arm, one end of the oblique arm is connected to the side of the clamping slot, the other end of the oblique arm is connected to one end of the horizontal arm, the end of the horizontal arm is fixedly connected to the connecting head, and a connecting hole 1 is arranged on the connecting head; the clamping slot opening is arranged for the cable to pass through when clamping;

[0039] Furthermore, the oblique arm, the horizontal arm and the connecting head are integrally arranged;

[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 arranged corresponding to the clamping groove, so that one end of the wire clamp can be inserted into the clamping groove and fixed. The wire clamp includes a clamping groove 1 and a clamping groove 2 corresponding to each other above and below. A connecting ear 1 is arranged on both sides of the clamping groove 1, and a vertical screw rod is arranged on the connecting ear 1. A connecting ear 2 corresponding to the connecting ear 1 is arranged on both sides of the clamping groove 2, and a through hole corresponding to the screw rod is arranged on the connecting ear 2. The screw rod of the clamping groove 1 passes through the through hole of the clamping groove 2, and the clamping groove 1 and the clamping groove 2 are detachably connected through a nut;

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

[0042] Further, the ferrule is arranged corresponding to the clamping groove and the oblique arm, the ferrule includes a conical sleeve, the sleeve is arranged corresponding to the clamping groove, a docking plate corresponding to the opening of the clamping groove is arranged at the top of the sleeve, a corresponding cylindrical sleeve is arranged at the small diameter end of the sleeve, oblique angle clamping grooves corresponding to the oblique arm are arranged on both sides of the sleeve, and a through opening groove is arranged at the bottom of the sleeve and the cylindrical sleeve; the opening groove is arranged for the cable to pass through when clamping;

[0043] Furthermore, the telescopic pull rod comprises a sleeve and an inner screw rod, the inner screw rod is arranged in the sleeve, a nut is sleeved on the inner screw rod, a ratchet is arranged at one end of the nut, a ratchet wrench is arranged on the ratchet, a connecting cylinder shaft is arranged on one side of the ratchet wrench, and the connecting cylinder shaft and the sleeve are connected through a bearing; a connecting card plate 1 is arranged on one side of the inner screw rod, and a connecting card plate 2 is arranged on one side of the sleeve, both the connecting card plate 1 and the connecting card plate 2 are U-shaped connecting card plates, and the U-shaped connecting card plate is provided with connecting holes on the card plate;

[0044] Further, the connector includes a connecting card plate three and a connecting ring, the connecting card plate includes a symmetrically arranged ear plate one and ear plate two, the ear plate one and the ear plate two are fixedly connected by the connecting ring, and the ear plate one and the ear plate two are both provided with corresponding connecting holes three;

[0045] Furthermore, the connector is detachably connected to the connector by bolts; the connector is detachably connected to the second connecting card plate by bolts; the first connecting card plate is detachably connected to the connecting plate by bolts;

[0046] Furthermore, the connecting plate is provided with connecting hole two, which are arranged at both ends and the middle position of the connecting plate. The connecting holes at both ends are connected to the telescopic pull rod, and the middle connecting hole is fixed to the cross arm steel frame corresponding to the overhead ground wire tension string hardware by bolts when in use.

[0047] Specifically, when inspecting and repairing the tension string hardware of the overhead ground wire, remove the ferrule, take out the wire clamp, place the cable between the first and second slots of the wire clamp, close and fix the first and second slots with nuts, pass the cable at the front end of the wire clamp into the connecting slot through the slot opening, then insert the wire clamp into the connecting slot, and the cable at the front end of the connecting slot enters the ferrule through the opening slot below the ferrule, push the ferrule back and clamp it into the connecting slot and the inclined arm, and then fix the connecting plate to the crossbar steel frame corresponding to the tension string hardware of the overhead ground wire with bolts; tighten the telescopic rods with the ratchet wrenches on both sides so that the entire tool tightens the cable for inspection and replacement work.

Claims

1. A special maintenance tool for overhead ground wire tension string hardware, including a connecting frame, a conductor clamping fixture, a telescopic pull rod, a connecting plate and a connector, characterized in that: A clamping groove is provided in the middle of the connecting frame, and a wire clamping fixture is clamped at the clamping groove. The wire clamping fixture includes a wire clamp and a clamping sleeve. The wire clamp is installed in the clamping groove, and the clamping sleeve is installed outside the clamping groove. The two ends of the connecting frame are respectively connected to connectors, and the connector is connected to one end of the telescopic rod. The other end of the telescopic rod is connected to the connecting plate, and the two ends of the connecting plate are respectively connected to the telescopic rod.

2. A special maintenance tool for overhead ground wire tension string fittings according to claim 1, characterized in that: The connecting frame includes a snap-in slot, a connecting arm and a connecting head. The snap-in slot is a conical slot body. A snap-in slot opening is provided at the top of the snap-in slot. Connecting arms and connecting heads are symmetrically provided on both sides of the snap-in slot. The connecting arm includes a horizontal arm and an oblique arm. One end of the oblique arm is connected to the side of the snap-in slot, and the other end of the oblique arm is connected to one end of the horizontal arm. The end of the horizontal arm is fixedly connected to the connecting head, and a connecting hole 1 is provided on the connecting head.

3. A special maintenance tool for overhead ground wire tension string fittings according to claim 2, characterized in that: The wire holder is a double cone with small diameters at both ends and a large diameter in the middle. One end of the wire holder is arranged corresponding to the clamping slot, so that one end of the wire holder can be inserted into the clamping slot and fixed. The wire holder includes a clamping slot one and a clamping slot two corresponding to the upper and lower parts. A connecting ear one is arranged on both sides of the clamping slot one, and a vertical screw is arranged on the connecting ear one. A connecting ear two corresponding to the connecting ear one is arranged on both sides of the clamping slot two, and a through hole corresponding to the screw is arranged on the connecting ear two. The screw of the clamping slot one passes through the through hole of the clamping slot two, and the clamping slot one and the clamping slot two are detachably connected through a nut.

4. The special maintenance tool for overhead ground wire tension string fittings according to claim 3, characterized in that: The material of the wire clamp is rubber or plastic.

5. A special maintenance tool for overhead ground wire tension string fittings according to claim 4, characterized in that: The ferrule is arranged corresponding to the clamping groove and the oblique arm, and the ferrule includes a conical sleeve. The sleeve is arranged corresponding to the clamping groove, a docking plate corresponding to the opening of the clamping groove is arranged at the top of the sleeve, a corresponding cylindrical sleeve is arranged at the small diameter end of the sleeve, and oblique clamping grooves corresponding to the oblique arms are arranged on both sides of the sleeve, and through opening grooves are arranged at the bottom of the sleeve and the cylindrical sleeve.

6. A special maintenance tool for overhead ground wire tension string fittings according to claim 5, characterized in that: The telescopic pull rod includes a sleeve and an inner screw rod, the inner screw rod is arranged in the sleeve, the inner screw rod is sleeved with a nut, a ratchet is arranged at one end of the nut, a ratchet wrench is arranged on the ratchet, a connecting shaft is arranged on one side of the ratchet wrench, and the connecting shaft and the sleeve are connected by a bearing; a connecting clamping plate 1 is arranged on one side of the inner screw rod, and a connecting clamping plate 2 is arranged on one side of the sleeve, and both the connecting clamping plate 1 and the connecting clamping plate 2 are U-shaped connecting clamping plates, and the U-shaped connecting clamping plate is provided with connecting holes on the clamping plates.

7. A special maintenance tool for overhead ground wire tension string fittings according to claim 6, characterized in that: The connector includes a connecting card plate three and a connecting ring. The connecting card plate includes an ear plate one and an ear plate two that are symmetrically arranged. The ear plate one and the ear plate two are fixedly connected via a connecting ring. The ear plate one and the ear plate two are both provided with corresponding connecting holes three.

8. The special maintenance tool for overhead ground wire tension string fittings according to claim 7, characterized in that: The connecting head is detachably connected to the connector via bolts; the connector is detachably connected to the connecting card plate 1 or the connecting card plate 2 via bolts; the connecting card plate 1 or the connecting card plate 2 is detachably connected to the connecting plate via bolts.

9. A special maintenance tool for overhead ground wire tension string fittings according to claim 8, characterized in that: The connecting plate is provided with connecting holes 2, which are arranged at both ends and the middle of the connecting plate, and the connecting holes at both ends are connected to the telescopic pull rod.

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