Steel cable theft-prevention clamp
Technical field
The present invention relates to the antitheft device that a kind of aerial cable is used, a kind of steel cable theft-prevention clamp.
Background technology
Aerial cable generally is to be suspended on the steel strand wire with metal hanger, and the guiding principle twisted wire is fixed on the electric pole with iron splint.After stealer pliers commonly used is cut off cable it is extracted out from hook, steals.
Summary of the invention
The present invention is intended to propose a kind of cable and steel strand wire can being firmly fixed together, in case the stolen device of cable, a kind of steel cable theft-prevention clamp.
This steel cable theft-prevention clamp, the cover plate that comprises a pair of steel, the recess that two semicircular arcs are arranged on each cover plate, the recess of a semicircular arc of its middle and upper part is the recess of the less semicircular arc of clamping steel strand wire, the recess of a semicircular arc of bottom is the recess of the bigger semicircular arc of clamping cable, and respectively there is a screw jack upper end of cover plate, middle part and lower end.There is a semicircular flanging upper end of cover plate above the screw jack, also there is a semicircular flanging lower end of cover plate below the screw jack; The projection that the both sides of the screw jack at the middle part of cover plate respectively have a bending to form.This steel cable theft-prevention clamp also comprises three groups of abnormity screws, special-shaped nut, and the head of special-shaped screw becomes abnormity, and the profile of special-shaped nut also is an abnormity, and special-shaped screw inserts respectively in three screw jacks, screws mutually with special-shaped nut again.
During use, two steel cover plates of this steel cable theft-prevention clamp are lumped together mutually, be clipped in the outside of steel strand wire and cable, steel strand wire are clipped in the recess of less semicircular arc on cover plate top, make cable clip in the recess of the bigger semicircular arc of cover plate bottom, penetrate respectively in the screw jack at cover plate two ends and middle part with 3 special-shaped screws again, screw on nut, cover plate is fastened, and cable promptly fixes with steel strand wire, plays the effect that prevents that cable is stolen.Because the upper and lower of two screw jacks of the upper and lower end of cover plate has a semicircular flanging respectively, the head of screw is partly surrounded, there is not specific purpose tool screw can't be outwarded winding, the projection of the both sides of the screw jack at the middle part of cover plate also can play the screw that prevents with common wrench turn middle part, the essential again box spanner ability turn of using special use of used special-shaped screw can be played good antitheft effect.
Description of drawings
Accompanying drawing 1 is the structure of cover plate figure of steel cable theft-prevention clamp;
Accompanying drawing 2 is the structure chart of special-shaped screw;
Accompanying drawing 3 is the structure chart of special-shaped screw socket Wrench head;
Accompanying drawing 4 is the application state figure of steel cable theft-prevention clamp;
The box spanner of accompanying drawing 5 special-shaped screw special uses.
Embodiment
This steel cable theft-prevention clamp comprises the cover plate of a pair of steel as shown in Figure 1.The recess 1 of the less semicircular arc of clamping steel strand wire is arranged at the top of each cover plate, and the recess 2 of the bigger semicircular arc of a clamping cable is arranged at the bottom of cover plate, and respectively there is a screw jack 3,5,7 upper end of cover plate, middle part and lower end.There is a semicircular flanging 4 top of the upper end screw jack 3 of cover plate.Also there is the flanging 8 of a semicircle below of the lower end screw jack 7 of cover plate.The projection 6 that the both sides of the screw jack 5 at the middle part of the cover plate of this steel cable theft-prevention clamp also respectively have a bending to form.This steel cable theft-prevention clamp also comprises three groups of abnormity screws, special-shaped nut, the head of abnormity screw becomes abnormity, the profile of abnormity nut also be special-shaped, and triangle for example shown in Figure 2 or pentagon shown in Figure 4 also can be interior pentagon, interior triangle, quincunx etc.
As shown in Figure 4, two steel cover plates of this steel cable theft-prevention clamp are lumped together mutually, be clipped in the outside of steel strand wire 13 and cable 14, steel strand wire 13 are clipped in the less recess 1 on cover plate top, cable 14 is clipped in the bigger recess 2 of cover plate bottom, insert respectively in three screw jacks 3,5,7 with 3 special-shaped screws 9, screw mutually with special-shaped nut, cable 14 promptly fixes with steel strand wire 13.Because the upper and lower of two screw jacks of the upper and lower end of cover plate has a semicircular flanging 4,8 respectively, the head of screw is partly surrounded, there is not specific purpose tool, only screw can't be outwarded winding with common spanner, the projection of the both sides of the screw jack 5 at the middle part of cover plate also can play the screw that prevents with common wrench turn middle part, and the essential box spanner ability turn of using special use of special-shaped screw, played good antitheft effect.This steel cable theft-prevention clamp can be stamped to form with steel plate.
The structure of the box spanner 10 that above-mentioned special-shaped screw is used can be as shown in Figure 5, form outward L shaped, on one side longer, another side is shorter, respectively there is a sleeve 11 at its two ends, as shown in Figure 3, the shape of the inner chamber 12 of this sleeve is consistent with the shape of the head of special-shaped screw 9.