Tension clamp of composite post insulator

Abstract

The utility model relates to the technical field of insulator testing, and discloses a tension clamp of a composite post insulator, which comprises a pulling plate and a clamping column, connecting rings are fixed on the surfaces of the upper part and the lower part of the pulling plate close to the inner side, the connecting rings are fixed on the surface of the pulling plate in a welding manner, and a plurality of screw holes are uniformly formed in the surface of the pulling plate on the side edges of the connecting rings. The tail end of the clamping column is integrally connected with a screw, the diameter of the screw is smaller than that of the clamping column, and the screw is screwed into the screw hole in a screwing mode so that the clamping column can be fixedly connected to the surface of the pulling plate. According to the technical scheme of the utility model, the screws are fixed on the surfaces of the pull plates by screwing the screws into the screw holes at proper positions, and can be aligned with the through holes in the surfaces of the flanges to pass through, and two pull plates are tightly attached to the inner sides of the flanges at the two ends of each insulator by adopting the same mode, so that the insulator can be fixed. And then the pulling plate is pulled to transmit an acting force to the flange for a tension test, and can be quickly and simply connected with the flange of the insulator during detection.

Description

Technical Field

[0001] The utility model relates to the technical field of insulator testing, in particular to a tension clamp for a composite post insulator. Background Art

[0002] Post composite insulators can effectively utilize narrow corridors to transmit electricity, are suitable for urban network technology transformation, can reduce the height of poles and towers, and can save a lot of manpower, material and financial resources. Due to their high bending strength, they can prevent cascade fracture accidents that are prone to occur in porcelain cross-arms, and are products that cannot be replaced by porcelain cross-arms. They are small in size, light in weight, and have strong shock and impact resistance, and do not require manual cleaning, providing protection for safe operation.

[0003] The composite post insulator includes a core and flanges connected to both ends of the core. When performing a tensile test on the core, a tensile clamp is required to be connected to the flange at the end of the insulator by tightening and locking with bolts. The connection operation is complicated and inconvenient for quick connection. Therefore, a tensile clamp for a composite post insulator is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a tension clamp for a composite post insulator, which is fixed on the surface of a pull plate by screwing a screw into a screw hole at a suitable position, and can be aligned with the perforations on the flange surface and passed through. The flanges at both ends of each insulator are tightly attached to two pull plates on the inner side in the same way, and then the pull plates are pulled to transfer the force to the flange for a tension test. During testing, it can be quickly and easily connected to the flange of the insulator, solving the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tension clamp for a composite post insulator, comprising a pull plate and a clamping column, wherein the upper and lower surfaces of the pull plate close to the inner side are fixed with connecting rings, and the connecting rings are fixed to the surface of the pull plate by welding; a plurality of screw holes are evenly arranged on the surface of the pull plate on the side of the connecting ring, and the end of the clamping column is integrally connected with a screw rod, the diameter of the screw rod is smaller than the diameter of the clamping column, and the screw rod is screwed into the screw hole by means of rotation so that the clamping column is connected and fixed to the surface of the pull plate, and the outer ring of the end of the clamping column is connected with a hand-tightened nut by means of rotation.

[0006] By adopting the above technical scheme, the clamping column is connected and fixed to the screw hole at the appropriate position on the surface of the pull plate according to the perforation spacing of the flange, and then the pull plate is made to touch the inner surface of the flange, and the clamping column passes through the perforation of the flange, so that the pull plate can be quickly pressed against the inner surface of the flange, and then the steel rope is pulled to achieve the purpose of quickly pulling the flanges at both ends of the insulator to carry out a tensile test.

[0007] Optionally, an arc opening is formed on the side surface of the pull plate, and the arc opening runs through two sides of the pull plate.

[0008] By adopting the above technical solution, when the pull plate is close to the inner surface of the flange, the column part of the insulator passes through the arc opening.

[0009] Optionally, a first thread is arranged around the outer ring of the end of the clamping column, and the hand-tightened nut is screwed onto the outer ring of the end of the clamping column through the first thread.

[0010] Optionally, a second thread is arranged around the outer ring of the screw, and the screw is screwed into the screw hole through the second thread.

[0011] Optionally, the length of the screw rod is equal to the depth of the screw hole on the surface of the pull plate.

[0012] By adopting the above technical solution, the screw rod can be screwed into the inside of the screw hole as a whole, thereby ensuring the stability of the connection between the screw rod and the screw hole.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] 1. The technical solution of the present application is to provide a plurality of screw holes at different positions on the surface of the pull plate, so that the screw can be screwed into the screw hole at a suitable position to fix it on the surface of the pull plate, and the through-holes on the surface of the flange can be aligned and passed through. The flanges at both ends of each insulator are tightly attached to two pull plates on the inner side in the same way, and then the pull plates are pulled to transfer the force to the flange for a tensile test, which can be quickly and easily connected to the flange of the insulator during testing.

[0015] 2. The technical solution of the present application is to have a hand nut rotatably connected to the end of the clamping column through a first thread. When the pull plate is not pulled by a steel rope, the hand nut can temporarily limit the clamping column so that it will not slip out of the through hole of the flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the tension clamp of the composite post insulator of the utility model;

[0018] Figure 2 The utility model is a schematic diagram of the post clamping structure of the tension clamp of the composite post insulator.

[0019] In the figure: 1, pull plate; 11, arc mouth; 12, connecting ring; 13, screw hole; 2, clamping column; 21, first thread; 22, screw rod; 221, second thread; 3, hand-tightened nut. DETAILED DESCRIPTION

[0020] See also Figure 1-2 The utility model provides a technical solution: a tension clamp for a composite post insulator, comprising a pull plate 1 and a clamping column 2, wherein a plurality of pull plates 1 are provided, so that the inner surface of each flange at both ends of the insulator is in contact with two pull plates 1, and an arc opening 11 is provided on the side surface of the pull plate 1, and the arc opening 11 passes through both sides of the pull plate 1, so that the column of the flange side insulator can pass through the pull plate 1 through the arc opening 11.

[0021] Connecting rings 12 are fixed to the upper and lower surfaces near the inner side of the pull plate 1. The connecting rings 12 are fixed to the surface of the pull plate 1 by welding. The steel cable can be connected and locked to the surface of the pull plate 1 through the connecting rings 12 on both sides of the pull plate 1. The other end of the steel cable is connected to the pulling equipment for the tensile test. During the test, the pull plate 1 can be pulled by the steel cable and act on the flanges at both ends of the insulator.

[0022] A plurality of screw holes 13 are evenly provided on the surface of the pull plate 1 on the side of the connecting ring 12, and a screw rod 22 is integrally connected to the end of the clamping column 2. The diameter of the screw rod 22 is smaller than the diameter of the clamping column 2. A second thread 221 is arranged around the outer ring of the screw rod 22. A screw hole 13 that can be aligned with the flange perforation is selected so that the screw rod 22 at the end of the clamping column 2 can be screwed into the screw hole 13 through the second thread 221, thereby connecting and fixing the clamping column 2 to the surface of the pull plate 1, and can pass through the perforation on the flange surface. The length of the screw rod 22 is equal to the depth of the screw hole 13 on the surface of the pull plate 1, so that the screw rod 22 is integrally screwed into the screw hole 13, thereby maintaining a stable and firm connection between the clamping column 2 and the pull plate 1.

[0023] The outer ring at the end of the clamping column 2 is evenly surrounded by a first thread 21. When the clamping column 2 passes through the through-hole of the flange and touches the inner surface of the flange, the outer ring at the end of the clamping column 2 is connected to the hand nut 3 by means of the first thread 21. The hand nut 3 can achieve a limiting effect. When the steel cable is not tightened, the clamping column 2 can be prevented from slipping out of the through-hole of the flange.

[0024] When in use, according to the hole spacing on the end flange of the insulator, adjust the clamping column 2 on the surface of the pull plate 1 and screw it into the position of the appropriate screw hole 13, unscrew the hand-tightening nut 3 at the end of the clamping column 2, and then clamp the two halves of the pull plate 1 on the surface of the flange close to the core body from both sides, and pass the clamping column 2 through the through-hole on the flange surface, and then screw on the hand-tightening nut 3, so that the clamping column 2 is limited and passes through the through-hole on the flange, so that the steel rope is connected to the connecting ring 12 on both sides of the pull plate 1 surface, and connected to the pulling detection equipment, the flange on the other side of the insulator is also connected with the two halves of the pull plate 1 close to each other in the same way, and then the pulling detection equipment can be started to pull the pull plates 1 on both sides of the insulator outward through the steel rope, and the pull plates 1 are against the inner surface of the flange, thereby pulling the composite post insulator outward for a tension test.

Claims

1. A tension clamp for a composite post insulator, comprising a pull plate (1) and a clamping column (2), characterized in that: The upper and lower surfaces of the pull plate (1) close to the inner side are both fixed with connection rings (12), and the connection rings (12) are fixed to the surface of the pull plate (1) by welding; A plurality of screw holes (13) are evenly arranged on the surface of the pull plate (1) on the side of the connecting ring (12); the end of the clamping column (2) is integrally connected with a screw rod (22); the diameter of the screw rod (22) is smaller than the diameter of the clamping column (2); the screw rod (22) is screwed into the screw hole (13) by means of a screw connection so that the clamping column (2) is connected and fixed to the surface of the pull plate (1); the outer ring of the end of the clamping column (2) is connected with a hand-tightened nut (3) by means of a screw connection.

2. The tension clamp for composite post insulator according to claim 1, characterized in that: The side surface of the pull plate (1) is provided with an arc opening (11), and the arc opening (11) runs through both sides of the pull plate (1).

3. The tension clamp for composite post insulator according to claim 1, characterized in that: The outer ring at the end of the clamping column (2) is surrounded by a first thread (21), and the hand-tightened nut (3) is screwed onto the outer ring at the end of the clamping column (2) through the first thread (21).

4. The tension clamp for composite post insulator according to claim 1, characterized in that: The outer ring of the screw rod (22) is surrounded by a second thread (221), and the screw rod (22) is screwed into the screw hole (13) through the second thread (221).

5. The tension clamp for composite post insulator according to claim 1, characterized in that: The length of the screw rod (22) is equal to the depth of the screw hole (13) on the surface of the pull plate (1).

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