CN201535309U - An iron tower anti-loosening and anti-theft thread connection pair - Google Patents

Abstract

An iron tower anti-loosening and anti-theft thread connection pair, which includes bolts, anti-loosening ferrules and nuts, is characterized in that the bolts are connected to nuts through the anti-loosening ferrules, and there are several grooves on the threads of the bolts; one side of the nuts is in the shape of a hexagonal column , the other side is cylindrical, and there are two or several arc-shaped stop posts symmetrically arranged on the outer edge of the round nut; the anti-loosening ferrule has two stepped holes of different sizes, and several inner Convex teeth fit with grooved bolts, cross grooves are formed at the end of the large step hole, and two or several stop holes are formed on the ferrule. The technical effect of the utility model is: the fixing of the bolt and the nut is realized through the anti-loosening ferrule, so as to achieve the purpose that the bolt connection pair is not easy to loosen and prevents theft.

Description

An iron tower anti-loosening and anti-theft thread connection pair

technical field

The utility model relates to a connection pair, in particular to an iron tower anti-loosening and anti-theft thread connection pair.

Background technique

Iron towers are affected by wind vibrations, and the threaded connection pairs of its components tend to be loose, so they are easy to wear and fall off, causing major accidents and unnecessary losses; at the same time, the threaded connections of existing iron towers can be disassembled with ordinary tools, which is very easy It is easy to bring opportunities for criminals. In order to solve the problem of anti-loosening, the existing methods include: 1. Add spring washers; 2. Penetrate the bolt and nut matrix with steel wire rope or latch; 3. Double nut connection, such as Chinese patent No. ZL992349.15. Patent; 4. Use the expansion principle to expand the bolt, such as Chinese patent No. ZL01271652.9 and ZL200320131108.1 and so on. The above-mentioned first method is not ideal due to the uneven effect of the elastic force; the second method has improved the anti-loose effect and also has a certain anti-theft effect, but it is difficult to install at high altitude; the latter two methods have better anti-loose effect. Some improvements have been made, but most of them do not have the anti-theft function, and the structure is more complicated, the bolts or nuts are difficult to process, and the cost is higher.

Contents of the invention

The purpose of the utility model is to provide an iron tower anti-loosening and anti-theft thread connection pair, which is effective in anti-loosening and anti-theft, has low manufacturing cost and is easy to install.

The utility model is realized in this way, it comprises bolt, anti-loosening ferrule and nut, it is characterized in that bolt connects nut through anti-loosening ferrule, and there are several grooves on the screw thread of bolt; The shape of one side of nut is hexagonal column shape, The other side is cylindrical, and two or several arc-shaped stop posts are arranged symmetrically on the outer edge of the round nut; the anti-loose ferrule has two stepped holes of different sizes, and several inner protrusions are arranged at the small stepped holes. Teeth, fitted with bolts with grooves, the end of the large step hole is provided with a cross groove, and the diameter of the large step hole can be inserted into a round nut with a stopper column to expand the ferrule, and the ferrule has a Two or more stop holes positioned so that the round nut presses against the step and cooperates with the stop post on the nut. When in use, the bolt is installed on the workpiece, and the bolt and the ferrule are fixed by the cooperation between the bolt groove and the convex teeth in the ferrule; while the nut is tightened, the round nut with the stopper part enters the ferrule, Make the large hole end of the ferrule gradually undergo elastic-plastic deformation and expand until the round nut presses the step on the ferrule and the stop post enters the stop hole, the ferrule elastically recovers, and the nut and ferrule are fixed.

The technical effect of the utility model is: the fixing of the bolt and the nut is realized through the anti-loosening ferrule, so as to achieve the purpose that the bolt connection pair is not easy to loosen and prevents theft.

Description of drawings

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

Fig. 2 is a top view of the bolt of the present invention.

Fig. 3 is a top view of the anti-loosening ferrule of the present invention.

Fig. 4 is a front view of the anti-loosening ferrule of the present invention.

Fig. 5 is the front view of the nut of the present utility model.

Fig. 6 is the bottom view of the nut of the present invention.

In the figure, 1, bolt 2, anti-loose ferrule 3, nut 4, groove 5, inner convex tooth 6, cross groove 7, stop hole 8, step 9, stop post

Detailed ways

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the iron tower anti-loosening and anti-theft thread connection pair is composed of a bolt 1, an anti-loosening ferrule 2 and a nut 3. There are several grooves 4 at the screw thread of the bolt 1 . The anti-loosening ferrule 2 has two holes of different sizes, and there is a step 8 between the two holes. Several internal convex teeth 5 are arranged at the small hole, which fit with the bolt 1 with the groove 4, and there is a Cross groove 6 and two or several stop holes 7. One side of the nut 3 is hexagonal in shape, and the other side is cylindrical, and two or several arc-shaped stop posts 9 are arranged symmetrically on the outer edge of the round nut. The bolt 1 is installed on the workpiece, put on the anti-loosening ferrule 2 and then screw on the nut 3, the stop post 9 of the round nut part enters the anti-loosening ferrule 2, so that the anti-loosening ferrule 2 expands until the round nut presses the clamp The step 8 on the sleeve and the stop post 9 enter the stop hole 7, the ferrule 2 returns elastically, and the bolt 1 and the nut 3 are not easy to loosen under the fixation of the ferrule 2 and can prevent theft.

Claims (1)

1. iron tower anti-loose anti-theft pair that is threaded, it comprises bolt, locking cutting ferrule and nut, it is characterized in that bolt passes through locking cutting ferrule attaching nut, the screw thread place of bolt has several grooves; Nut one facial contour is the hexagonal cylindricality, and another side is cylindrical, is arranged with two or the curved stop column in several bottoms in the round nut outer rim; Lockingly be covered with two step holes that vary in size, place, small stair hole is provided with double wedge in several, and with the bolt fit that has groove, big step nose end has cross recess, has two or several stop hole on cutting ferrule.

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