Anti-galloping strain clamp

Abstract

The utility model relates to the technical field of strain clamps, in particular to an anti-galloping strain clamp which comprises a metal shell, a connecting steel rope is movably installed at the rear end of the metal shell, and connectors are fixedly connected to the positions, corresponding to the connecting steel rope, of the left side and the right side of the metal shell. A plurality of groups of reinforcing rib plates are fixedly connected to the outer side of the metal shell, a wedge-shaped cavity is formed in the inner side of the metal shell, and an insulating fixing sleeve is inserted into the wedge-shaped cavity. Meanwhile, the insulation protection sleeve is used for limiting deflection and protecting the connecting position, the overall structural strength of the strain clamp is guaranteed, the strain clamp cannot be damaged or broken when the wire gallops, the service life of the strain clamp is greatly prolonged, the wire can be fixed under the condition that tools are not used, and the service life of the strain clamp is prolonged. And the convenience of installation operation is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of strain clamps, in particular to an anti - dancing strain clamp. Background Art

[0002] A strain clamp is a fitting used to fix conductors on strain towers in overhead transmission lines. Its main body is integrally crimped with the conductor and is connected in series with strain insulators, bearing all the tension from the conductor. The drainage plate of the strain clamp is connected to the jumper wire, not only playing a role in guiding current, but also having to bear the gravity and tension exerted by the jumper wire. Most drainage plates of ordinary strain clamps are made by pressing an aluminum tube after bending. This kind of structure is simple to process, but the transition part between the aluminum tube and the drainage plate is a weak part. If the jumper wire is unevenly stressed or the stress changes suddenly, it is easy to cause the fracture of the transition part of the drainage plate.

[0003] With the change of meteorological conditions in the areas of transmission lines, the problem of transmission line dancing appears in some areas. The dancing is more serious in the dancing section, especially in the strain section. When the strain clamp is dancing, the impact force it bears from the jumper wire will increase exponentially. Due to the limited strength of the existing strain clamps, if they are in a dancing state for a long time, it is bound to cause damage or fracture to the strain clamps, thus reducing the service life of the strain clamps. At the same time, in order to avoid the problem of limited locking force of the existing strain clamps, it is usually necessary to pre - tighten manually with tools before installing the strain clamps. The installation operation is relatively complex, especially more dangerous for construction workers working at heights.

[0004] Therefore, it is particularly important to design an anti - dancing strain clamp to solve the above - mentioned defects urgently. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model designs an anti - dancing strain clamp, which aims to solve the technical problems that the strength of the anti - dancing strain clamp in the prior art is limited. If it is in a dancing state for a long time, it is bound to cause damage or fracture to the strain clamp, reducing the service life of the strain clamp. At the same time, the installation operation is relatively complex, especially more dangerous for construction workers working at heights.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] An anti - dancing strain clamp includes a metal shell. A connecting steel rope is movably installed at the rear end of the metal shell. Connecting heads are fixedly connected to the positions on the left and right sides of the metal shell corresponding to the connecting steel rope. A plurality of reinforcing rib plates are fixedly connected to the outside of the metal shell. A wedge - shaped cavity is arranged inside the metal shell, and an insulating fixing sleeve is inserted into the wedge - shaped cavity. An insulating protective sleeve is clamped at the front end of the insulating fixing sleeve.

[0008] As a preferred embodiment of the present utility model, a nylon sleeve is sleeved outside the connecting steel rope. Both ends of the connecting steel rope are fixedly connected with fixing heads, and fixing card slots adapted to the fixing heads are provided inside the connecting heads.

[0009] As a preferred embodiment of the present utility model, the insulating fixing sleeve is composed of a first clamping sleeve and a second clamping sleeve. The outer sides of the first clamping sleeve and the second clamping sleeve are both in fit with the inner wall of the wedge-shaped cavity. A tightening seam is provided between the first clamping sleeve and the second clamping sleeve, and threading sleeves are fixedly connected to the inner sides of the first clamping sleeve and the second clamping sleeve.

[0010] As a preferred embodiment of the present utility model, sliders are fixedly connected to the front ends of the tops of the first clamping sleeve and the second clamping sleeve. Sliding grooves are provided at positions corresponding to the sliders on the top of the metal shell. Pushing blocks are fixedly connected to the rear ends of the tops of the first clamping sleeve and the second clamping sleeve.

[0011] As a preferred embodiment of the present utility model, multiple anti-slip grooves are provided inside both of the two threading sleeves, and multiple friction blocks are fixedly connected to the outer sides of the first clamping sleeve and the second clamping sleeve.

[0012] As a preferred embodiment of the present utility model, the insulating protective sleeve is designed in a horn-shaped structure. An opening gap is provided on the outer side of the insulating protective sleeve, and two groups of clamping blocks are symmetrically connected to the rear end of the insulating protective sleeve.

[0013] As a preferred embodiment of the present utility model, clamping protrusions are fixedly connected to the opposite sides of the two groups of clamping blocks, and connecting card slots are provided at positions corresponding to the clamping protrusions on the outer side of the insulating fixing sleeve.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] Through design, when the connecting steel rope is connected to the overhead frame in the present utility model, the nylon sleeve is simultaneously inserted into the inner side of the fixing ring or the fixing hole position, thereby preventing the connection between the connecting steel rope and the overhead frame from being worn and broken when the wire dances. After the wire is fixed, the wire is double-protected by the insulating fixing sleeve and the metal shell. At the same time, the insulating protective sleeve is used to limit the yaw and protect the connection, ensuring the overall structural strength of the strain clamp, so that the strain clamp will not be damaged or broken when the wire dances, greatly improving the service life of the strain clamp;

[0016] At the same time, the connection between the metal shell and the overhead frame can be completed without the aid of tools, and the wire can be firmly fixed without the aid of tools, further improving the convenience of the installation operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 This is a schematic diagram of the connector structure of the present utility model;

[0019] Figure 3 This is a schematic diagram of the split structure of the insulation protective sleeve of the present utility model;

[0020] Figure 4 is Figure 3 the enlarged schematic diagram at position A in

[0021] Figure 5 This is a schematic diagram of the internal structure of the wire threading sleeve of the present utility model.

[0022] In the figure: 1. Metal shell; 2. Connecting steel rope; 201. Nylon sleeve; 202. Fixed head; 3. Connector; 301. Fixed card slot; 4. Reinforcing rib plate; 5. Wedge-shaped cavity; 6. Insulating fixing sleeve; 601. First clamping sleeve; 602. Second clamping sleeve; 603. Wire threading sleeve; 604. Slide block; 605. Slide groove; 606. Pushing block; 607. Anti-slip groove; 608. Friction block; 7. Insulation protective sleeve; 701. Block; 702. Clamping protrusion; 703. Connecting card slot. Specific embodiments

[0023] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment:

[0025] Please refer to Figures 1-5 , the present utility model provides a technical solution:

[0026] An anti-galloping strain clamp includes a metal shell 1, a connecting steel rope 2 is movably installed at the rear end of the metal shell 1, connecting heads 3 are fixedly connected to the positions on both left and right sides of the metal shell 1 corresponding to the connecting steel rope 2, multiple groups of reinforcing rib plates 4 are fixedly connected to the outer side of the metal shell 1, a wedge-shaped cavity 5 is provided inside the metal shell 1, an insulating fixing sleeve 6 is inserted into the wedge-shaped cavity 5, and an insulation protective sleeve 7 is clamped at the front end of the insulating fixing sleeve 6.

[0027] First, a nylon sleeve 201 is sleeved outside the connecting steel rope 2. Fixed heads 202 are fixedly connected to both ends of the connecting steel rope 2. A fixed card slot 301 adapted to the fixed head 202 is provided inside the connecting head 3. Before fixing the wire, first take out the fixed head 202 at one end of the connecting steel rope 2 from the inside of the fixed card slot 301, then pass the connecting steel rope 2 through the fixing ring or fixing hole position on the overhead frame, and at the same time pass the nylon sleeve 201 into the inside of the fixing ring or fixing hole position together, so as to prevent the connection between the connecting steel rope 2 and the overhead frame from being worn and broken when the wire dances, thereby improving the service life of the strain clamp. After passing the connecting steel rope 2, then snap the fixed head 202 into the fixed card slot 301 to fix the metal shell 1, so that the connection between the metal shell 1 and the overhead frame can be completed without tools, thereby improving the convenience of the installation operation.

[0028] Furthermore, the insulating fixing sleeve 6 is composed of a first clamping sleeve 601 and a second clamping sleeve 602. The outer sides of the first clamping sleeve 601 and the second clamping sleeve 602 are both in contact with the inner wall of the wedge-shaped cavity 5. There is a tightening seam between the first clamping sleeve 601 and the second clamping sleeve 602. Threading sleeves 603 are fixedly connected to the inner sides of the first clamping sleeve 601 and the second clamping sleeve 602. Before fixing the wire, first slide the first clamping sleeve 601 and the second clamping sleeve 602 backward to loosen the first clamping sleeve 601 and the second clamping sleeve 602, then pass the wire into the inside of the threading sleeve 603, and then slide the first clamping sleeve 601 and the second clamping sleeve 602 forward and insert them into the wedge-shaped cavity 5. As the first clamping sleeve 601 and the second clamping sleeve 602 are inserted, the tightening seam gradually tightens. Since the connecting steel rope 2 is fixed to the overhead frame, the wire is pulled forward and fixed, and the wire can be firmly fixed under the opposite acting force, so that the wire can be firmly fixed without tools, further improving the convenience of the installation operation.

[0029] Then, sliding blocks 604 are fixedly connected to the front ends of the tops of the first clamping sleeve 601 and the second clamping sleeve 602. A sliding groove 605 is provided at a position corresponding to the sliding block 604 on the top of the metal shell 1. Pushing blocks 606 are fixedly connected to the rear ends of the tops of the first clamping sleeve 601 and the second clamping sleeve 602. Before fixing the wire, slide the first clamping sleeve 601 and the second clamping sleeve 602 backward through the pushing block 606. After passing the wire into the inside of the threading sleeve 603, slide the first clamping sleeve 601 and the second clamping sleeve 602 forward through the sliding block 604, and drive the first clamping sleeve 601 and the second clamping sleeve 602 to move stably under the connection of the sliding groove 605.

[0030] Secondly, a plurality of anti-slip grooves 607 are formed on the inner sides of the two wire threading sleeves 603. A plurality of friction blocks 608 are fixedly connected to the outer sides of the first clamping sleeve 601 and the second clamping sleeve 602. When the wire is fixed inside the wire threading sleeve 603, the anti-slip grooves 607 can improve the friction between the wire and the wire threading sleeve 603, thereby improving the fixing effect on the wire. At the same time, after the first clamping sleeve 601 and the second clamping sleeve 602 slide forward and fix the wire, the friction blocks 608 can increase the friction with the metal shell 1, further preventing loosening between the wire and the metal shell 1 after the wire is fixed and affecting the fixing effect.

[0031] Finally, the insulating protective sleeve 7 is designed in a horn-shaped structure. An opening gap is formed on the outer side of the insulating protective sleeve 7. Two clamping blocks 701 are symmetrically connected to the rear end of the insulating protective sleeve 7. Clamping protrusions 702 are fixedly connected to the opposite sides of the two clamping blocks 701. Connecting clamping grooves 703 are formed at positions corresponding to the clamping protrusions 702 on the outer side of the insulating fixing sleeve 6. After the wire is fixed, the insulating protective sleeve 7 is opened through the opening gap and sleeved on the outer side of the wire. Then, the clamping blocks 701 are clamped at the front end of the insulating fixing sleeve 6, and the clamping protrusions 702 are clamped into the inner sides of the connecting clamping grooves 703 to install and fix the insulating protective sleeve 7. When the wire sways, it will deflect, which easily causes wear at the connection between the wire and the front end of the insulating fixing sleeve 6. The insulating protective sleeve 7 is used to limit the deflection and protect the connection, further improving the service life of the strain clamp.

[0032] In this embodiment, the implementation scenario is specifically as follows: Before fixing the wire, first take out the fixing head 202 connected to one end of the connecting steel rope 2 from the inside of the fixing card slot 301, and then pass the connecting steel rope 2 through the fixing ring or fixing hole position on the overhead frame. At the same time, the nylon sleeve 201 is also passed into the inside of the fixing ring or fixing hole position, so as to prevent the connection between the connecting steel rope 2 and the overhead frame from being worn and broken when the wire dances, thereby improving the service life of the strain clamp. After passing the connecting steel rope 2, then snap the fixing head 202 into the fixing card slot 301 to fix the metal shell 1, so that the connection between the metal shell 1 and the overhead frame can be completed without the aid of tools. After the wire is fixed, the wire is double-protected by the insulating fixing sleeve 6 and the metal shell 1. At the same time, multiple groups of reinforcing rib plates 4 are provided on the outer side of the metal shell 1, so as to ensure the overall structural strength of the strain clamp, so that the strain clamp will not be damaged or broken when the wire dances. Before fixing the wire, first slide the first clamping sleeve 601 and the second clamping sleeve 602 backward to loosen the space between the first clamping sleeve 601 and the second clamping sleeve 602. Then pass the wire into the inside of the wire threading sleeve 603, and then slide the first clamping sleeve 601 and the second clamping sleeve 602 forward and insert them into the inside of the wedge-shaped cavity 5. As the first clamping sleeve 601 and the second clamping sleeve 602 are inserted, the tight-fitting seam gradually tightens. Since the connecting steel rope 2 is fixed to the overhead frame, the wire is pulled forward and fixed. Under the opposite acting force, the wire can be firmly fixed, so that the wire can be firmly fixed without the aid of tools. After the wire is fixed, install the insulating protective sleeve 7 at the connection between the wire and the front end of the insulating fixing sleeve 6. The whole operation process is simple and convenient. Compared with the existing strain clamps, the utility model double-protects the wire through the insulating fixing sleeve 6 and the metal shell 1, and at the same time uses the insulating protective sleeve 7 to limit the yaw and protect the connection, ensuring the overall structural strength of the strain clamp, so that the strain clamp will not be damaged or broken when the wire dances, greatly improving the service life of the strain clamp, and can fix the wire without using tools, further improving the convenience of the installation operation.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-galloping tension clamp, comprising a metal housing (1), characterized in that: A connecting steel rope (2) is movably mounted at the rear end of the metal shell (1); connectors (3) are fixedly connected at positions on both sides of the metal shell (1) corresponding to the connecting steel rope (2); a plurality of groups of reinforcing ribs (4) are fixedly connected to the outer side of the metal shell (1); a wedge-shaped cavity (5) is provided on the inner side of the metal shell (1); an insulating fixing sleeve (6) is inserted into the interior of the wedge-shaped cavity (5); and an insulating protective sleeve (7) is clamped at the front end of the insulating fixing sleeve (6).

2. The anti-galloping tension clamp according to claim 1, characterized in that: The outer side of the connecting steel rope (2) is provided with a nylon sleeve (201), both ends of the connecting steel rope (2) are fixedly connected with a fixing head (202), and the interior of the connecting head (3) is provided with a fixing slot (301) adapted for use with the fixing head (202).

3. The anti-galloping tension clamp according to claim 1, characterized in that: The insulating fixing sleeve (6) is composed of a first sleeve (601) and a second sleeve (602); the outer sides of the first sleeve (601) and the second sleeve (602) are both in contact with the inner wall of the wedge-shaped cavity (5); a tight seam is provided between the first sleeve (601) and the second sleeve (602); and the inner sides of the first sleeve (601) and the second sleeve (602) are both fixedly connected with a threading sleeve (603).

4. The anti-galloping tension clamp according to claim 3, characterized in that: The front ends of the tops of the first jacket (601) and the second jacket (602) are fixedly connected with sliders (604), a slide groove (605) is provided at a position of the top of the metal shell (1) corresponding to the slider (604), and the rear ends of the tops of the first jacket (601) and the second jacket (602) are fixedly connected with push blocks (606).

5. The anti-galloping tension clamp according to claim 3, characterized in that: The inner sides of the two sets of threading sleeves (603) are provided with a plurality of anti-slip grooves (607), and the outer sides of the first jacket (601) and the second jacket (602) are fixedly connected with a plurality of friction blocks (608).

6. The anti-galloping tension clamp according to claim 1, characterized in that: The insulating protective sleeve (7) is designed in a trumpet-shaped structure, an opening and closing notch is provided on the outer side of the insulating protective sleeve (7), and two groups of clamping blocks (701) are symmetrically connected to the rear end of the insulating protective sleeve (7).

7. The anti-galloping tension clamp according to claim 6, characterized in that: The two groups of the clamping blocks (701) are fixedly connected to opposite sides with clamping protrusions (702), and a connecting clamping groove (703) is provided at a position on the outside of the insulating fixing sleeve (6) corresponding to the clamping protrusion (702).

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