CN201335084Y

CN201335084Y - Anti-theft fastening bolt

Info

Publication number: CN201335084Y
Application number: CNU2009201108272U
Authority: CN
Inventors: 周维明
Original assignee: Yunnan Tabiao Fastener Co Ltd
Current assignee: Yunnan Tabiao Fastener Co Ltd
Priority date: 2009-01-13
Filing date: 2009-01-13
Publication date: 2009-10-28
Anticipated expiration: 2019-01-13

Abstract

The utility model provides an anti-theft fastening bolt which comprises a bolt with a screw cap and a nut connected with the bolt in a matched manner, wherein, an axial groove is formed on the bolt. The anti-theft fastening bolt is characterized in that a wedge type pin with a big head at one end and a small head at the other end is arranged in the groove, and the cross section of the small head end of the pin is matched with the cross section of the pin body. Since the wedge type pin with the big and the small heads at the both ends is arranged, especially, the pin with the small head end with the cross section matched with that of the pin body is adopted, when the pin is embedded in the groove between the bolt and the nut, and the internal threads for the nut are damaged so that the nut is not easy to disassemble from the bolt, i.e., the nut is not easy to disassemble eve if under the excessive force to really play the role of theft prevention, in addition, the shape of the cross section of the wedge type pin can be matched with the shape of the groove on the bolt, and the destructive power to the internal threads of the nut can be increased to ensure the anti-theft performances of the bolt and the nut, and therefore, the phenomenon of stealing is fundamentally eliminated.

Description

Antitheft clamping bolt

Technical field

The utility model relates to a kind of clamping bolt, and especially a kind of antitheft clamping bolt with anti-theft feature belongs to Course Exercise in Machinery Elements Design and manufacturing technology field.

Background technique

Be extensive use of on industry, agricultural, transport facility, bridge, waterpower and the electrical circuitry equipment bolt and on nut.Also just because of bolt, this characteristic that the nut consumption is big 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 and other communal facility 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, antitheft clamping bolt simple in structure.

The utility model is realized by following technical proposal: a kind of antitheft clamping bolt, comprise nut bolt and the nut that connects with it, and on bolt, be provided with axial notch, it is characterized in that being provided with in the groove the big and little CONCENTRIC REDUCER wedge-type pin of the other end of an end, and the microcephaly of pin holds section and pin body section to adapt.In in the groove that makes things convenient for by the CONCENTRIC REDUCER pin between stud bolt and nut, by the section of little head end the internal thread of nut is implemented to destroy, thereby can allow other people can't take out nut and reach antitheft purpose fully.

The sectional shape of described wedge-type pin is arranged to the triangle that adapts with the bolt indentation cross section, or prismatic, 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 the wedge-type pin is then made with stainless steel, to prolong its working life.

The utility model compared with prior art has following advantage and effect: adopt such scheme, promptly be the wedge-type pin that CONCENTRIC REDUCER is provided with by two ends, especially the pin that adopts the microcephaly to hold section and pin body section to adapt, 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 worker pin can be arranged to bolt on groove shapes adapt, can increase its collapsing force again to nut inner thread, to ensure the theftproof performance of bolts and nuts, the generation of fundamentally stopping the incident of stealing.

Description of drawings

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

Fig. 2 is the right elevation of Fig. 1;

Fig. 3 is a wedge-type pin feature schematic representation;

Fig. 4 is another wedge-type pin feature schematic 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.

The antitheft clamping bolt that the utility model provides, comprise the bolt 2 of being with nut 1 and the nut 5 that connects with it, and on bolt 2, be provided with axial notch 3, be provided with the big and little CONCENTRIC REDUCER wedge-type pin 4 of the other end of an end in its further groove 3, as Fig. 1, Fig. 2, and the microcephaly of pin 4 holds section and pin body section to adapt, and all is made as triangle 7, as Fig. 3.The microcephaly of pin 4 holds section and pin body section also can be made as prismatic 6, as Fig. 4.

By the big small end head setting of pin 4, the especially not setting of head end makes it in continuous telescopiny, and the internal thread of nut 5 is implemented to destroy, and allows other people take out nut and reaches antitheft purpose.

Claims

1, a kind of antitheft clamping bolt, comprise nut bolt and the nut that connects with it, and on bolt, be provided with axial notch, it is characterized in that being provided with in the groove the big and little CONCENTRIC REDUCER wedge-type pin of the other end of an end, and the microcephaly of pin hold section and pin body section to adapt.

2, antitheft clamping bolt according to claim 1, the sectional shape that it is characterized in that described wedge-type pin are arranged to the triangle that adapts with the bolt indentation cross section or prismatic.