Pre-twisted strain clamp with anti-impact structure

Abstract

The utility model belongs to the technical field of high-voltage line fittings, and particularly relates to a pre-twisted strain clamp with an anti-impact structure, which comprises a connecting ring, one side of the connecting ring is provided with an O-shaped ring, the O-shaped ring is sleeved with a U-shaped ring, the connecting ring is provided with a pre-twisted wire, the pre-twisted wire is provided with a first fixing plate and a second fixing plate, and the first fixing plate and the second fixing plate are arranged on the connecting ring. According to the utility model, through the arrangement of a limiting rod, a connecting plate, a second spring and conical needles, when an ice block moves towards the strain clamp and impacts the strain clamp, the plurality of conical needles are in contact with the ice block to play a role in breaking ice, so that the strain clamp can be protected, the service life of the strain clamp is prolonged, and the service life of the strain clamp is prolonged. When the conical needle makes contact with ice blocks, thrust can be applied to the multiple second springs, the second springs can play a buffering role, the impact force of the ice blocks on the strain clamp can be reduced, and the problem that the grip strength performance of the strain clamp is reduced due to the fact that the strain clamp is impacted by the ice blocks is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage line hardware, in particular to a pre-twisted tension clamp with an anti-impact structure. Background Art

[0002] Pretwisted tension clamp is a widely used tension clamp used for fixing the middle and terminal of overhead line conductors and overhead optical cables. The pretwisted tension clamp has a simple structure and is generally composed of a pre-twisted tension wire pre-twisted into a spiral shape and matching connecting hardware. The pretwisted tension clamp has the characteristics of high gripping force, light weight, uniform stress distribution, good corrosion resistance, simple installation, and strong versatility. It is widely used in conductors and overhead composite ground wires OPGW, overhead composite phase wires OPPC, all-dielectric self-supporting overhead optical cables AD SS and other overhead optical cables. The matching connecting hardware consists of a heart-shaped or U-shaped connecting ring and an extension rod or hanging plate, hanging ring, etc.

[0003] However, the pre-twisted tension clamp without an impact-proof structure will cause impact on the outlet of the pre-twisted tension clamp during the de-icing process when the line is installed in a heavy ice area, causing the pre-twisted wire at the outlet of the tension clamp to become loose, affecting the gripping force of the tension clamp. Therefore, a pre-twisted tension clamp with an impact-proof structure is proposed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a pre-twisted tension clamp with an anti-impact structure.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pre-twisted tension clamp with an impact-proof structure, comprising a connecting ring, an "O"-shaped ring is provided on one side of the connecting ring, a "U"-shaped ring is sleeved on the "O"-shaped ring, a pre-twisted wire is provided on the connecting ring, a first fixing plate and a second fixing plate are provided on the pre-twisted wire, a plurality of clamping structures are fixedly provided on one side of the second fixing plate, a plurality of slots are provided on one side of the first fixing plate, an arc-shaped groove is provided on the top inner wall of the slot, a positioning hole is provided on the top inner wall of the arc-shaped groove, two limiting holes are provided at one end of the first fixing plate and the second fixing plate, and an impact-proof mechanism is provided at one end of the first fixing plate and the second fixing plate.

[0006] As a further description of the above technical solution:

[0007] The clamping structure includes an inserting plate fixedly connected to one side of the second fixing plate, a receiving hole is provided on the top of the inserting plate, a first spring is fixedly provided in the receiving hole, and a push rod is fixedly provided on the top of the first spring.

[0008] As a further description of the above technical solution:

[0009] A guide plate is fixedly arranged between the push rod and the first spring, the guide plate is movably connected to the inner wall of the receiving hole, and the push rod is matched with the positioning hole.

[0010] As a further description of the above technical solution:

[0011] The anti-impact mechanism includes two limiting rods movably connected to the limiting holes, one end of the limiting rod is fixed with a connecting plate, the back side of the connecting plate is fixed with a plurality of second springs, and the front side of the connecting plate is fixed with a plurality of conical needles.

[0012] As a further description of the above technical solution:

[0013] The number of the tapered needles is seven, and the tapered needles are made of stainless steel.

[0014] As a further description of the above technical solution:

[0015] The exteriors of the connecting ring, the first fixing plate and the second fixing plate are all coated with an anti-corrosion layer.

[0016] The utility model has the following beneficial effects:

[0017] 1. Compared with the prior art, the pre-twisted tension clamp with an impact-proof structure is provided with a limit rod, a connecting plate, a second spring and a conical needle. When an ice cube moves toward the tension clamp and impacts the tension clamp, a plurality of conical needles contact the ice cube, which can break the ice and protect the tension clamp. When the conical needle contacts the ice cube, a thrust is applied to the plurality of second springs. The second springs can play a buffering role, which can reduce the impact force of the ice cube on the tension clamp and avoid the problem that the grip performance of the tension clamp is reduced due to the impact of the ice cube.

[0018] 2. Compared with the prior art, the pre-twisted tension clamp with an anti-impact structure is provided with a plug plate, a storage hole, a first spring, a push rod and a slot. The two fixing plates can be separated by squeezing the push rod, thereby realizing the disassembly of the anti-impact mechanism and the fixing plate. When replacing the cable, it is convenient to remove the first fixing plate and the second fixing plate, which is convenient for the operation and construction of relevant personnel and reduces the difficulty of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a pre-twisted tension clamp with an impact-proof structure proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of a pre-twisted tension clamp with an impact-proof structure proposed by the utility model after removing the first fixing plate and the second fixing plate;

[0021] Figure 3A schematic diagram of a three-dimensional structure from a first perspective after the first fixing plate and the second fixing plate of a pre-twisted tension clamp with an impact-proof structure proposed by the utility model are separated;

[0022] Figure 4 A schematic diagram of a three-dimensional structure from a second perspective after the first fixing plate and the second fixing plate of a pre-twisted tension clamp with an impact-proof structure proposed by the utility model are separated;

[0023] Figure 5 This is an enlarged structural schematic diagram of part A of a pre-twisted tension clamp with an impact-proof structure proposed by the utility model;

[0024] Figure 6 The utility model provides a stereoscopic schematic diagram of an anti-impact mechanism in a pre-twisted tension clamp with an anti-impact structure.

[0025] Legend:

[0026] 1. Connecting ring; 2. "O"-shaped ring; 3. "U"-shaped ring; 4. Pre-twisted wire; 5. First fixing plate; 6. Second fixing plate; 7. Clamping structure; 701. Insert plate; 702. Storage hole; 703. First spring; 704. Push rod; 8. Slot; 9. Arc groove; 10. Positioning hole; 11. Limiting hole; 12. Anti-impact mechanism; 121. Limiting rod; 122. Connecting plate; 123. Second spring; 124. Conical needle. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figures 1 to 6 The utility model provides a pre-twisted tension clamp with an impact-proof structure: comprising a connecting ring 1, an "O"-shaped ring 2 is provided on one side of the connecting ring 1, a "U"-shaped ring 3 is sleeved on the "O"-shaped ring 2, a pre-twisted wire 4 is provided on the connecting ring 1, a first fixing plate 5 and a second fixing plate 6 are provided on the pre-twisted wire 4, and the outer surfaces of the connecting ring 1, the first fixing plate 5 and the second fixing plate 6 are all coated with an anti-corrosion layer;

[0029] Reference Figure 4 to Figure 5, in order to achieve the purpose of rapid disassembly, a plurality of clamping structures 7 are fixedly provided on one side of the second fixing plate 6, and the clamping structure 7 includes a plug plate 701 fixedly connected to one side of the second fixing plate 6, and a storage hole 702 is provided on the top of the plug plate 701, and a first spring 703 is fixedly provided in the storage hole 702, and a top rod 704 is fixedly provided on the top of the first spring 703, and a same guide plate is fixedly provided between the top rod 704 and the first spring 703, and the guide plate is movably connected to the inner wall of the storage hole 702, and the top rod 704 is adapted to the positioning hole 10, and the two fixing plates can be separated by squeezing the top rod 704, so as to realize the disassembly of the anti-impact mechanism 12 and the fixing plate, and it is convenient to remove the first fixing plate 5 and the second fixing plate 6 when replacing the cable, which is convenient for the operation and construction of the relevant personnel and reduces the difficulty of operation;

[0030] Reference Figure 6 In order to protect the tension clamp, a plurality of slots 8 are provided on one side of the first fixing plate 5, an arc-shaped slot 9 is provided on the top inner wall of the slot 8, a positioning hole 10 is provided on the top inner wall of the arc-shaped slot 9, two limiting holes 11 are provided at one end of the first fixing plate 5 and the second fixing plate 6, and an anti-impact mechanism 12 is provided at one end of the first fixing plate 5 and the second fixing plate 6. The anti-impact mechanism 12 includes two limiting rods 121 movably connected to the limiting holes 11, and a connecting plate 122 is fixedly provided at one end of the limiting rod 121. The connecting plate 122 is A plurality of second springs 123 are fixedly provided on the back side, and a plurality of conical needles 124 are fixedly provided on the front side of the connecting plate 122. There are seven conical needles 124, which are made of stainless steel. The plurality of conical needles 124 come into contact with ice cubes to break ice. When the conical needles 124 come into contact with ice cubes, thrust is applied to the plurality of second springs 123. The second springs 123 can act as a buffer to reduce the impact force of ice cubes on the tension clamp, thereby avoiding the problem of reduced grip performance of the tension clamp due to the impact of ice cubes.

[0031] Working principle: After the pre-twisted wire 4 is used to fix and wrap the cable, the first fixing plate 5 is fitted with the pre-twisted wire 4, and then the top rod 704 is pressed downward, and the top rod 704 squeezes the first spring 703 at the bottom. When the top rod 704 is retracted into the storage hole 702, multiple plug-in plates 701 are inserted into the slot 8. When the top rod 704 moves to the position of the positioning hole 10, the first spring 703 pushes the top rod 704 upward, and the top rod 704 pops out from the positioning hole 10, so that the two fixing plates are spliced. The two fixing plates are fixed to the pre-twisted wire 4. When an ice cube moves toward the tension clamp and impacts the tension clamp, the multiple conical needles 124 contact the ice cube, which can break the ice and protect the tension clamp. When the conical needles 124 contact the ice cube, they apply thrust to the multiple second springs 123. The second springs 123 can play a buffering role, which can reduce the impact force of the ice cube on the tension clamp and avoid the problem of reduced grip performance of the tension clamp due to the impact of the ice cube.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pre-twisted tension clamp with an impact-proof structure, comprising a connecting ring (1), characterized in that: An "O"-shaped ring (2) is provided on one side of the connecting ring (1), a "U"-shaped ring (3) is sleeved on the "O"-shaped ring (2), a pre-twisted wire (4) is provided on the connecting ring (1), a first fixing plate (5) and a second fixing plate (6) are provided on the pre-twisted wire (4), a plurality of clamping structures (7) are fixedly provided on one side of the second fixing plate (6), a plurality of slots (8) are provided on one side of the first fixing plate (5), an arc-shaped groove (9) is provided on the top inner wall of the slot (8), a positioning hole (10) is provided on the top inner wall of the arc-shaped groove (9), two limiting holes (11) are provided on one end of each of the first fixing plate (5) and the second fixing plate (6), and an anti-impact mechanism (12) is provided on one end of each of the first fixing plate (5) and the second fixing plate (6).

2. The pre-twisted tension clamp with an impact-proof structure according to claim 1, characterized in that: The clamping structure (7) comprises an inserting plate (701) fixedly connected to one side of the second fixing plate (6); a receiving hole (702) is provided at the top of the inserting plate (701); a first spring (703) is fixedly provided in the receiving hole (702); and a push rod (704) is fixedly provided at the top of the first spring (703).

3. The pre-twisted tension clamp with an impact-proof structure according to claim 2, characterized in that: A guide plate is fixedly provided between the push rod (704) and the first spring (703), the guide plate is movably connected to the inner wall of the receiving hole (702), and the push rod (704) is adapted to the positioning hole (10).

4. The pre-twisted tension clamp with an impact-proof structure according to claim 1, characterized in that: The anti-impact mechanism (12) comprises two limiting rods (121) movably connected to the limiting holes (11); a connecting plate (122) is fixedly provided at one end of the limiting rod (121); a plurality of second springs (123) are fixedly provided on the back side of the connecting plate (122); and a plurality of conical needles (124) are fixedly provided on the front side of the connecting plate (122).

5. The pre-twisted tension clamp with an impact-proof structure according to claim 4, characterized in that: The number of the tapered needles (124) is seven, and the tapered needles (124) are made of stainless steel.

6. The pre-twisted tension clamp with an impact-proof structure according to claim 1, characterized in that: The exteriors of the connecting ring (1), the first fixing plate (5) and the second fixing plate (6) are all coated with an anti-corrosion layer.

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