Large-knife clamp for replacing LF-type yoke plate insulator chain

Abstract

The invention discloses a broadsword clamp for replacing an LF type yoke plate insulator chain, and relates to the technical field of tools for live-line (power-off maintenance) operation of power transmission lines, the broadsword clamp comprises an LF type yoke plate insulator chain assembly to be replaced and a broadsword clamp clamped on the LF type yoke plate insulator chain assembly, the broadsword clamp comprises a front clamp, a rear clamp, a lead screw assembly and an insulating pull plate, the front clamp is clamped on the equipotential side yoke plate, the rear clamp is clamped on the ground potential side yoke plate, and the front clamp and the rear clamp are connected and tensioned through the lead screw assembly and the insulating pull plate so that the two ends of the insulator string can be released from being tightened, and an operator can conveniently dismount and replace insulators; the acting force originally located on the insulator is transferred to the clamp through the large-knife clamp. Through the design of the broadsword fixture, the efficiency and the safety of replacement operation are improved, meanwhile, the damage to an insulator is reduced to the greatest extent, and a solid guarantee is provided for stable and reliable operation of an electric power system.

Description

Technical Field

[0001] The invention relates to the technical field of tools for live (power outage maintenance) operations on power transmission lines, and in particular to a broadsword clamp for replacing a LF type connecting plate insulator string. Background Art

[0002] In today's society, electricity is an important support for economic development and people's daily life, and its stable supply is crucial. In the huge network of power transmission, the tension tower insulators connected by LF type coupling plates play a key role. The line insulator string bears the load of the line and ensures the normal transmission of electric energy. It is indispensable for the normal operation of the power grid. Therefore, the insulator must be replaced in time after deterioration.

[0003] The traditional replacement method is to use a hoist and a bottle rack to replace the LF-type joint-plate-connected tension tower insulators, but this replacement method has many shortcomings: 1. When performing the replacement operation, the operator needs to perform a series of complex operation steps to arrange the hoist and the bottle rack. This process not only requires the transportation of relatively bulky equipment to the operation site, but also involves tedious installation and commissioning work. Due to the complex structure of these equipment, a high level of technology and rich experience are required to operate them. 2. The hoist will inevitably generate a certain impact force during operation, and this impact force is easily transmitted to the insulator. The insulators connected to the LF-type joint plate are usually made of relatively fragile materials such as glass and ceramics, and have limited ability to withstand external forces. Once hit, the insulator may have slight cracks or damage. These damages may not be easy to detect at the time, but as time goes by and the power system continues to operate, the damaged insulators will gradually become more fragile under the combined action of multiple factors such as electric fields, temperature changes, and mechanical stress. In the subsequent operation process, these damaged insulators are very likely to explode. The explosion of insulators will not only interrupt the power supply and affect the normal operation of the power system, but also pose a safety threat to the surrounding personnel and equipment. 3. With the increasing demand for electricity in modern society and the rapid development of power technology, the scale and complexity of the power system are also increasing, which puts higher requirements on the reliability and maintenance efficiency of power equipment. The traditional replacement method can no longer adapt to the rapid development of the modern power system.

[0004] The traditional method of replacing hoists and bottle racks is unable to cope with these new challenges. Therefore, a more advanced, convenient, efficient and safe replacement method is urgently needed. Summary of the invention

[0005] In view of the above shortcomings, the present invention provides a large knife fixture for replacing LF type connecting plate insulator string, which overcomes the problems existing in the background technology, improves the efficiency and safety of the replacement operation, and minimizes the damage to the insulator, providing a solid guarantee for the stable and reliable operation of the power system. The specific technical solution is as follows:

[0006] A broadsword fixture for replacing an LF type connecting plate insulator string, comprising an LF type connecting plate insulator string assembly to be replaced, wherein the LF type connecting plate insulator string assembly comprises an equipotential side connecting plate, a ground potential side connecting plate, an insulator string and a U-shaped ring, wherein two strings of the insulator strings are symmetrically arranged between the equipotential side connecting plate and the ground potential side connecting plate, wherein the U-shaped ring is installed on the equipotential side connecting plate and the ground potential side connecting plate, and wherein the broadsword fixture further comprises a broadsword fixture installed on the LF type connecting plate insulator string assembly, wherein opposite ends of the broadsword fixture are respectively clamped on the equipotential side connecting plate and the ground potential side connecting plate;

[0007] The broadsword clamp comprises a front clamp, a rear clamp, a screw assembly and an insulating pull plate. The front clamp is mounted on the equipotential side connecting plate, and the rear clamp is mounted on the ground potential side connecting plate. The front clamp and the rear clamp are connected and tightened through the screw assembly and the insulating pull plate to release the tension at both ends of the insulator string.

[0008] Preferably, the front card includes a front card plate body and card release feet symmetrically installed on the front card plate body, and a support shoulder with the same slope as the equipotential side connecting plate is formed between two opposite card release feet, and threaded holes are penetrated through the card release feet, and a screw assembly mounting hole is provided on the front card plate body, and the width between the two card release feet is equal to the width between the equipotential side connecting plates.

[0009] Preferably, a plurality of through holes are hollowed out on the front card plate body.

[0010] Preferably, the rear card includes a rear card plate body and hook-fixed support legs 1 and 2 symmetrically installed on the rear card plate body, a card release groove with the same slope as the ground potential side connecting plate is formed between the two hook-fixed support legs, the hook-fixed support legs 1 and the hook-fixed support legs 2 abut against the U-shaped ring, and either the hook-fixed support legs 1 or the hook-fixed support legs 2 can be detachably installed on the rear card plate body.

[0011] Preferably, hooks adapted to the U-shaped ring are formed on the hook-fixing support leg one and the hook-fixing support leg two, so that the hook-fixing support leg one and the hook-fixing support leg two can be hooked and clamped on the U-shaped ring.

[0012] Preferably, a plurality of through holes 2 are hollowed out on the rear card plate body.

[0013] Preferably, the rear card plate body is provided with a mounting threaded hole;

[0014] The insulating pull plate is provided with a plurality of mounting through holes at equal intervals, and the rear card plate body is mounted on the insulating pull plate through a connecting piece.

[0015] Preferably, an insertion hole is provided on the ground potential side connecting plate, a connecting arm is rotatably provided on the rear card plate body, an adjustment groove is provided on the connecting arm, and a connecting rod is inserted into the adjustment groove and the insertion hole to ensure a stable connection between the rear card plate body and the ground potential side connecting plate.

[0016] Preferably, the screw assembly includes an operating handle, a screw, a connecting seat and a nut seat, the nut seat is rotatably mounted on the front card plate body, the operating handle is mounted on the nut seat to drive the rotation of the nut seat, the connecting seat is mounted on the insulating pull plate, one end of the screw is connected to the connecting seat, and the other end is threadedly connected to the nut seat, the operating handle is manually cranked to drive the rotation of the nut seat, and the rotation of the nut seat drives the insulating pull plate to move axially along the screw.

[0017] Preferably, the broadsword clamp is made of alloy steel.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention provides a broadsword clamp for replacing an LF type connecting plate insulator string, comprising a broadsword clamp that is assembled and clamped on an LF type connecting plate insulator string component. The broadsword clamp transfers the force originally acting on the insulator string to the clamp, and releases the tension on the insulator string by driving a lead screw component, so that both ends of the insulator string sag, making it convenient for operators to remove and replace the insulator string. The design of the broadsword clamp improves the efficiency and safety of the replacement operation, while minimizing the damage to the insulator, providing a solid guarantee for the stable and reliable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0021] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention;

[0022] Figure 2 It is a schematic diagram of the front card structure in the present invention;

[0023] Figure 3It is a schematic diagram of the rear card structure in the present invention.

[0024] 100-LF type connecting plate insulator string assembly, 110-equipotential side connecting plate, 120-ground potential side connecting plate, 121-insertion hole, 130-insulator string, 140-U-shaped ring, 200-large knife clamp, 210-front clamp, 211-front clamp body, 212-card support foot, 213-support shoulder, 214-threaded hole, 215-through hole one, 220-back clamp, 221-card body, 222-hook support foot one, 223-hook support foot two, 224-through hole two, 225-installation threaded hole, 226-connecting arm, 227-connecting rod, 230-screw assembly, 231-operating handle, 232-screw, 233-connecting seat, 234-nut seat, 240-insulating pull plate, 241-installation through hole. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment 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.

[0026] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0027] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If the terms "first", "second", "third" are described, they are only used for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] Example

[0030] like Figures 1 to 3 As shown, the present invention provides a broadsword fixture for replacing an LF type connecting plate insulator string, comprising an LF type connecting plate insulator string assembly 100 to be replaced, wherein the LF type connecting plate insulator string assembly 100 comprises an equipotential side connecting plate 110, a ground potential side connecting plate 120, an insulator string 130 and a U-shaped ring 140, wherein two strings of the insulator strings 130 are symmetrically arranged between the equipotential side connecting plate 110 and the ground potential side connecting plate 120, wherein the U-shaped ring 140 is installed on the equipotential side connecting plate 110 and the ground potential side connecting plate 120, and further comprising a broadsword fixture 200 installed on the LF type connecting plate insulator string assembly 100, wherein opposite ends of the broadsword fixture 200 are respectively clamped on the equipotential side connecting plate 110 and the ground potential side connecting plate 120;

[0031] Preferably, the broadsword clamp 200 includes a front clamp 210, a rear clamp 220, a screw assembly 230 and an insulating pull plate 240, the front clamp 210 is clamped on the equipotential side connecting plate 110, the rear clamp 220 is clamped on the ground potential side connecting plate 120, the front clamp 210 and the rear clamp 220 are connected and tightened through the screw assembly 230 and the insulating pull plate 240 to release the tension at both ends of the insulator string 130.

[0032] In some preferred embodiments, the front card 210 includes a front card body 211 and card-releasing legs 212 symmetrically mounted on the front card body 211, a shoulder 213 having the same slope as the equipotential side connecting plate 110 is formed between two opposing card-releasing legs 212, a threaded hole 214 is provided through the card-releasing legs 212, a screw assembly mounting hole is provided on the front card body 211, and the width between the two card-releasing legs 212 is equal to the width between the equipotential side connecting plates 110. Among them, a plurality of through holes 215 are hollowed out on the front card body 211.

[0033] In some preferred embodiments, the rear card 220 includes a rear card body 221 and a hook-fixing support leg 1 222 and a hook-fixing support leg 2 223 symmetrically mounted on the rear card body 221, a card slot having the same slope as the ground potential side connecting plate 120 is formed between the two hook-fixing support legs, the hook-fixing support leg 1 222 and the hook-fixing support leg 2 223 abut against the U-shaped ring 140, and either the hook-fixing support leg 1 222 or the hook-fixing support leg 2 223 is detachably mounted on the rear card body 221, in order to adapt to the installation and insertion of different connecting plates by replacing the hook-fixing support legs. The hook-fixing support leg 1 222 and the hook-fixing support leg 2 223 form curved hooks that are compatible with the U-shaped ring 140, so that the hook-fixing support leg 1 222 and the hook-fixing support leg 2 223 are hooked and clamped on the U-shaped ring 140. The rear card plate body 221 is hollowed out to form a plurality of through holes 224. The rear card plate body 221 is provided with mounting threaded holes 225;

[0034] The insulating pull plate 240 is provided with a plurality of mounting through holes 241 at equal intervals, and the rear clamping plate body 221 is mounted on the insulating pull plate 240 via a connector.

[0035] Preferably, an insertion hole 121 is provided on the ground potential side connecting plate 120, and a connecting arm 226 is rotatably provided on the rear card plate body 221, and an adjustment groove is provided on the connecting arm 226. A connecting rod 227 is inserted between the adjustment groove and the insertion hole 121 to ensure a stable connection between the rear card plate body 221 and the ground potential side connecting plate 120.

[0036] Preferably, the screw assembly 230 includes an operating handle 231, a screw 232, a connecting seat 233 and a nut seat 234. The nut seat 234 is rotatably mounted on the front card body 211. The operating handle 231 is mounted on the nut seat 234 to drive the rotation of the nut seat 234. The connecting seat 233 is mounted on the insulating pull plate 240. One end of the screw 232 is connected to the connecting seat 233, and the other end is threadedly connected to the nut seat 234. The operating handle 231 is manually cranked to drive the rotation of the nut seat 234. The rotation of the nut seat 234 drives the insulating pull plate 240 to move axially along the screw 232.

[0037] In some preferred embodiments, the broadsword clamp 200 is made of alloy steel.

[0038] In summary, the present invention provides a broadsword fixture for replacing LF type connecting plate insulator strings, including a broadsword fixture that is assembled and clamped on the LF type connecting plate insulator string assembly. The broadsword fixture transfers the force originally acting on the insulator string to the fixture, and releases the tension on the insulator string by driving the screw rod assembly, so that both ends of the insulator string are loose, which is convenient for operators to remove and replace the insulator string. The design of the broadsword fixture improves the efficiency and safety of the replacement operation, while minimizing the damage to the insulator, providing a solid guarantee for the stable and reliable operation of the power system. The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or replacements that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A large knife fixture for replacing an LF type connecting plate insulator string, comprising an LF type connecting plate insulator string assembly (100) to be replaced, wherein the LF type connecting plate insulator string assembly (100) comprises an equipotential side connecting plate (110), a ground potential side connecting plate (120), an insulator string (130) and a U-shaped ring (140), wherein two strings of the insulator strings (130) are symmetrically arranged between the equipotential side connecting plate (110) and the ground potential side connecting plate (120), and the U-shaped ring (140) is installed on the equipotential side connecting plate (110) and the ground potential side connecting plate (120), characterized in that: It also includes a large knife clamp (200) installed on the LF type connecting plate insulator string assembly (100), and the large knife clamp (200) is clamped on the equipotential side connecting plate (110) and the ground potential side connecting plate (120) at opposite ends respectively; The broadsword clamp (200) comprises a front clamp (210), a rear clamp (220), a screw assembly (230) and an insulating pull plate (240); the front clamp (210) is clamped on the equipotential side connecting plate (110), and the rear clamp (220) is clamped on the ground potential side connecting plate (120); the front clamp (210) and the rear clamp (220) are connected and tightened via the screw assembly (230) and the insulating pull plate (240) so that the two ends of the insulator string (130) are released from tension.

2. A large knife fixture for replacing LF type connecting plate insulator string according to claim 1, characterized in that: The front card (210) comprises a front card board body (211) and card support legs (212) symmetrically mounted on the front card board body (211); a support shoulder (213) having the same slope as the equipotential side connecting plate (110) is formed between two opposing card support legs (212); a threaded hole (214) is provided through the card support legs (212); a screw assembly mounting hole is provided on the front card board body (211); and a width between the two card support legs (212) is equal to a width between the equipotential side connecting plates (110).

3. A large knife fixture for replacing LF type connecting plate insulator string according to claim 2, characterized in that: The front card plate body (211) is hollowed out to form a plurality of through holes (215).

4. A large knife fixture for replacing LF type connecting plate insulator string according to claim 1, characterized in that: The rear card (220) comprises a rear card plate body (221) and a hook-fixed support leg 1 (222) and a hook-fixed support leg 2 (223) symmetrically mounted on the rear card plate body (221), a card slot having the same slope as the ground potential side connecting plate (120) is formed between the two hook-fixed support legs, the hook-fixed support leg 1 (222) and the hook-fixed support leg 2 (223) abut against the U-shaped ring (140), and either the hook-fixed support leg 1 (222) or the hook-fixed support leg 2 (223) can be detachably mounted on the rear card plate body (221).

5. A large knife fixture for replacing LF type connecting plate insulator string according to claim 4, characterized in that: The hook-fixing support leg 1 (222) and the hook-fixing support leg 2 (223) are formed with curved hooks that match the U-shaped ring (140), so that the hook-fixing support leg 1 (222) and the hook-fixing support leg 2 (223) can be hooked on the U-shaped ring (140).

6. A large knife fixture for replacing LF type connecting plate insulator string according to claim 4, characterized in that: The rear clamping plate body (221) is hollowed out to form a plurality of second through holes (224).

7. A large knife fixture for replacing LF type connecting plate insulator string according to claim 4, characterized in that: The rear clamping plate body (221) is provided with a mounting threaded hole (225); The insulating pull plate (240) is provided with a plurality of mounting through holes (241) at equal intervals, and the rear clamping plate body (221) is mounted on the insulating pull plate (240) via a connecting piece.

8. The large knife fixture for replacing LF type connecting plate insulator string according to claim 4, characterized in that: The ground potential side connecting plate (120) is provided with an insertion hole (121), the rear card plate body (221) is rotatably provided with a connecting arm (226), the connecting arm (226) is provided with an adjustment groove, and a connecting rod (227) is inserted into the adjustment groove and the insertion hole (121) to ensure a stable connection between the rear card plate body (221) and the ground potential side connecting plate (120).

9. The large knife fixture for replacing LF type connecting plate insulator string according to claim 2, characterized in that: The screw rod assembly (230) includes an operating handle (231), a screw rod (232), a connecting seat (233) and a nut seat (234); the nut seat (234) is rotatably mounted on the front card body (211); the operating handle (231) is mounted on the nut seat (234) to drive the rotation of the nut seat (234); the connecting seat (233) is mounted on the insulating pull plate (240); one end of the screw rod (232) is connected to the connecting seat (233), and the other end is threadedly connected to the nut seat (234); the operating handle (231) is manually cranked to drive the rotation of the nut seat (234); the rotation of the nut seat (234) drives the insulating pull plate (240) to move axially along the screw rod (232).

10. The large knife fixture for replacing LF type connecting plate insulator string according to claim 1, characterized in that: The broadsword clamp (200) is made of alloy steel.

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