CN201050538Y - Theft-proof screw bolt - Google Patents

Abstract

The utility model provides a theftproof bolt which comprises a bolt with a screw cap, a nut, and an axial notch arranged on the bolt. The utility model is characterized in that wedge-shaped pins are arranged in the axial notch. Through the wedge-shaped pins with different big heads and small heads, when being embedded in the axial notch between the bolt and the nut, the theftpoof bolt damages an internal screw thread of the nut to ensure that the nut is hard to be disassembled from the bolt, namely, even when overexerting, the nut is also hard to be disassembled, thereby playing the theftproof role in deed, in addition, the section shape of the wedge-shaped pin can be arranged to be suitable for the shape of the axial notch on the bolt, and can also increase the breakage to the internal screw thread of the nut, so as to ensure the theftproof performance of the bolt and the nut, and put an end to the happening of stealing affairs radically.

Description

Anti-theft bolt

Technical field

The utility model relates to a kind of bolt, especially a kind of anti-theft bolt with anti-theft feature.

Background technique

Bolt and on nut be widely used on industry, agricultural, transport facility, bridge, waterpower and the electrical circuitry equipment as common fastening connection piece, its purposes is wide, consumption is big to be very surprising.Also just because of this wide characteristic of the big purposes of consumption can both be seen bolt, nut in cities and towns, rural area.Bolt, the nut extensive application on equipments such as the electric transmission line support tower of power industry and highway fence, bridge simultaneously, also offer an opportunity for those lawless persons that forget what is right at the sight of profit, not only cause economic loss, but also can cause security incident, jeopardize people's lives and properties to country.For this reason, people have developed various anti-theft bolts, to stop to steal bolt, nut incident.But still there is following deficiency in existing anti-theft bolt, the one, and complex structure is made difficulty, can't realize on the technology; The 2nd, it is cylindrical that latch mostly is greatly, easily roll in its groove that forms between bolts and nuts, even a little firmly with regard to rotary nut, theftproof performance is limited.Therefore, be necessary fully prior art is improved.

Summary of the invention

For overcoming the prior art above shortcomings, the utility model provides a kind of theftproof performance good, simple in structure anti-theft bolt.

The utility model is realized by following technical proposal: a kind of anti-theft bolt, and comprise nut bolt and nut, and on bolt, be provided with axial notch, it is characterized in that being provided with in the groove wedge stud.

Described wedge stud is the big and little CONCENTRIC REDUCER pin of the other end of an end, first can be easily with in the groove between its stud bolt and nut, second the CONCENTRIC REDUCER by pin, make it in continuous telescopiny, the internal thread of nut is implemented to destroy, allow other people take out nut and reach antitheft purpose.

The sectional shape of described wedge stud is arranged to the shape that adapts with the bolt indentation cross section, to implement the destruction to nut inner thread to greatest extent, makes it to play antitheft effect.

Described bolt, nut are made with the 45# steel, and wedge stud is then made with stainless steel.

The utility model compared with prior art has following advantage and effect: adopt such scheme, promptly by the different wedge stud of CONCENTRIC REDUCER, in the time of in the groove between stud bolt and nut, nut inner thread is destroyed, make nut be difficult to pull down from bolt, even overexertion, also be difficult to pull down nut, really play antitheft effect, in addition the sectional shape of wedge stud can be arranged to bolt on groove shapes adapt, can increase its collapsing force again, to ensure the theftproof performance of bolts and nuts, the generation of fundamentally stopping the incident of stealing to nut inner thread.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the wedge stud structural representation.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further, but this reality has to hold within novel and is not limited thereto.

Bolt 2 afterbodys of band nut 1 are provided with axial notch 3, be provided with wedge stud 4 in the groove 3, and bolt 2, nut 5 usefulness 45# steel are made, 4 of wedge studs are made with stainless steel, wedge stud 4 is the big and little CONCENTRIC REDUCER pin of the other end of an end, CONCENTRIC REDUCER by pin 4, make it in continuous telescopiny, the internal thread of nut 5 is implemented to destroy, allow other people take out nut and reach antitheft purpose, the sectional shape of wedge stud 4 is arranged to the shape that adapts with the bolt indentation cross section, to implement the destruction to nut inner thread to greatest extent, makes it to play antitheft effect.

Claims (4)

1. an anti-theft bolt comprises nut bolt and nut, and is provided with axial notch on bolt, it is characterized in that being provided with in the groove wedge stud.

2. anti-theft bolt according to claim 1 is characterized in that described wedge stud is the big and little CONCENTRIC REDUCER pin of the other end of an end.

3. anti-theft bolt according to claim 1, the sectional shape that it is characterized in that described wedge stud are arranged to the shape that adapts with the bolt indentation cross section, to implement the destruction to nut inner thread to greatest extent, make it to play antitheft effect.

4. anti-theft bolt according to claim 1 is characterized in that described bolt, nut make with the 45# steel, and wedge stud is then made with stainless steel.

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