CN2375810Y - Theft-proof bolt - Google Patents

Abstract

The utility model relates to a theft-proof bolt, which is composed of screw rods and nuts. The end of the screw rod extends one inclined pin hole towards the inner side, and a knife edge lock pin is in interference fit and connection with an inclined hole. The utility model has the advantages of simple structure, lightness, easy fabrication, low cost, flexible operation, and convenient use, and random adjustment. Because the screw rod is drilled with one inclined hole, the knife edge lock pin is inserted in interference fit; a hand hammer is used for punching. The installation progress of engineering can be accelerated, and the screw bolt can not be wasted.

Description

The inclined cutout anti-theft bolt

The utility model belongs to a kind of anti-theft device, is meant a kind of anti-theft bolt especially.

At present, some open-air shared devices such as stolen phenomenon such as transformer, iron tower are more serious, relevant department has taked many new preventive measure in order to prevent that equipment is destroyed and to lose, and more representational is to adopt anti-theft bolt stolen to prevent the shared device equipment.The detailed report of existing many relevant anti-theft bolts in the disclosed patent documentation, for example CN93200847, CN88219895, CN88219950, CN89202321, CN89207717, CN89214266, CN89219210, CN90202175 etc., the anti-theft bolt that these documents are reported generally all is made up of screw rod, nut nut and roller, the direction that on screw rod or nut, parallels to the axis fluting, roller is housed in the groove, nut is contained on the fluting, nut can only be tightened can not be unloaded, or flywheel-type, reach antitheft purpose in proper order.The common defects of these anti-theft bolt structures is, group structure complexity, the manufacturing difficulty, the anti-theft bolt that has has increased the weight of self, and in installation process, roller comes off from groove easily, if error is installed to be difficult to adjust, cause bolt to be scrapped, cause unnecessary waste, also very inconvenient in installation.

The novel purpose of this use is, under the situation of the weight that does not increase anti-theft bolt, provide a kind of simple in structure, manufacturing is easy, with low cost, manipulate flexiblely, can arbitrarily adjust, can not cause the anti-theft bolt structure of bolt waste, to overcome many deficiencies of existing anti-theft bolt.

Based on above-mentioned purpose, the utility model has designed a kind of inclined cutout anti-theft bolt, this anti-theft bolt is made of screw rod 1 and nut 2 two-part, in the tail end of the screw rod 1 taper pin hole 11 that extends internally, the front end of this pin-and-hole 11 passes from the bar wall of screw rod 1, have a knife edge lock pin 3 to be connected with this pin-and-hole 11, its Placement is to connect with stationary fit.

Below in conjunction with drawings and Examples structural feature of the present utility model is further described.

The fastening back of Fig. 1 the utility model assembling sectional view.

Knife edge lock pin plan view in Fig. 2 the utility model.

Knife edge lock pin plan view in Fig. 3 the utility model.

Knife edge lock pin termination schematic representation in Fig. 4 the utility model.

1-screw rod 11-pin-and-hole

The 2-nut

3-knife edge lock pin

As shown in Figure 1, the utility model inclined cutout anti-theft bolt is made up of screw rod 1 and nut 2, pass from the bar wall of screw rod 1 at the extend internally front end that is drilled with a taper pin hole 11 these pin-and-holes 11 of the tail end of screw rod 1, a knife edge lock pin 3 is arranged, knife edge lock pin 3 and these pin-and-hole 11 stationary fits.During use, screw rod 1 is fixed on the equipment of desire reinforcing, in nut 2 precession screw rods 1, after screwing and having adjusted, knife edge lock pin 3 is inserted in the pin-and-hole 11 of screw rods 1 tail end, with hand hammer knife edge lock pin 3 is squeezed into to the knife edge of its front end and passed pin-and-hole 11, in the screw thread of the knife edge termination insert nut 2 of knife edge lock pin 3, nut 2 can not advance and can not retreat, and plays antitheft effect with this structure.

In sum, the utility model compared with prior art its advantage be:

1, simple in structure, do not increase the weight of anti-theft bolt, processing and manufacturing is held Easily, with low cost;

2, use flexible and convenient operation, can arbitrarily adjust;

3, owing to only bore an inclined hole on screw rod, knife edge lock pin is inserted in stationary fit, squeezes into hand hammer to get final product, thereby has accelerated the project installation progress, and do not cause the waste of bolt.

Claims (1)

1. A kind of inclined cutout anti-theft bolt, constitute by screw rod (1) and nut (2) two-part, it is characterized in that: from the tail end of screw rod (1) the taper pin hole (11) that extended internally, the front end of this pin-and-hole (11) passes from the bar wall of screw rod (1), and other has a knife edge lock pin 3 to be connected in the stationary fit mode with this pin-and-hole 11.

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