CN2388396Y

CN2388396Y - Anti-theft locknut for steel tower

Info

Publication number: CN2388396Y
Application number: CN 99234915
Authority: CN
Inventors: 任宝玉
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-08-28
Filing date: 1999-08-28
Publication date: 2000-07-19
Anticipated expiration: 2009-08-28

Abstract

The utility model relates to a theftproof locknut for iron towers, which is composed of an upper cap, a lower cap and a theftproof steel jacket, wherein the upper cap and the lower cap are provided with identical inner threads, the joint surface of the upper cap and the lower cap is provided with sawtoothed gear teeth which are mutually engaged, and the gear teeth is bigger than the distance among the inner threads on the gear teeth. The lower end of the lower cap is provided with a round table, and the theftproof steel jacket is sheathed on the round table. The utility model has the advantages of simple and novel structure, convenient installation and operation, unique and complete theftproof performance, simple manufacture methods and low cost. Besides, the utility model adopts the negative direction lock principle, is suitable for large scale production and can be widely popularized and used. The utility model can be tightened at any time by an ordinary wrench especially and satisfies the requirement of electrical operation department, and thus, the utility model is especially suitable for electric power transmission steel towers.

Description

The antitheft tightening nut of iron tower

The utility model relates to the antitheft tightening nut of a kind of iron tower, is mainly used in the anti-loose anti-theft of electric power transmission iron tower fastening piece.

Existing anti-theft nut is of a great variety, cut both ways, but its mainly to act on be for antitheft, and the comparatively desirable several anti-theft nuts of theftproof performance mostly can not tighten up after the once mounting, do not satisfy the requirement that operation power department regularly tightens up.Existing in addition anti-theft nut structure relative complex, manufacture cost is higher, install numerous and diverse, have in addition need special tool just can finish, influenced promoting the use of of anti-theft nut.

The purpose of this utility model is to design the antitheft tightening nut of a kind of iron tower, traditional two caps and tight principle have been broken through with reverse locking principle, make it simple in structure, with low cost, be fit to produce in enormous quantities, large size is promoted the use of, and uses common wrench to tighten up at any time it, has satisfied the requirement that operation power department regularly tightens up.

Design proposal of the present utility model: this antitheft tightening nut is made of last cap (1), following cap (2) and antitheft steel bushing (3), be shaped on identical internal thread up and down on the cap, be shaped on zigzag fashion teeth (4) and (5) respectively on the upper-end surface of the lower end surface of last cap (1) and following cap (2), zigzag fashion teeth (4) and (5) are meshing with each other, and zigzag fashion teeth (4) and (5) intermeshing also necessary coincideing of internal thread of going up simultaneously on cap (1) and the following cap (2); The tooth depth of zigzag fashion teeth (4) and (5) is greater than the pitch of the internal thread on last cap (1) and the following cap (2) in addition, and the lower end outer wall of following cap (2) is shaped on round platform (6), and the external diameter of round platform (6) is less than following cap (2) maximum outside diameter size; Antitheft steel bushing (3) is a cylindrical tube, internal diameter is greater than the maximum outside diameter size of last cap (1) and following cap (2), the line of contact that highly is higher than zigzag fashion teeth (4) and (5), and the lower end surface of antitheft steel bushing (3) is shaped on reducing (7), the internal diameter of reducing (7) is greater than the external diameter of following cap (2) lower end round platform (6), maximum outside diameter size less than following cap (2) is sleeved on down on the cap (2), and makes round platform (6) be positioned at reducing (7).

Be shaped on two symmetrical zigzag fashion teeth (4) and (5) respectively on the upper-end surface of the lower end surface of last cap (1) and following cap (2).Last cap (1) profile is that cap under the multiedge cylinder (2) profile is that cylindrical body or the profile that goes up cap (1) and following cap (2) are multiedge cylinder.

The utility model compared with prior art one is novelty simple in structure, and is easy to install; The 2nd, adopt reverse locking principle to make theftproof performance uniqueness, reliable, adopt antitheft steel bushing to cover down cap, protection has no way of doing it stealer comprehensively; The 3rd, manufacture method is simple, and is with low cost, is fit to produce in enormous quantities, and large size is promoted the use of; Four are to use common wrench to tighten up at any time it, have solved the difficult problem that existing anti-theft nut is difficult to tighten up, and have satisfied the requirement that operation power department regularly tightens up.

Fig. 1 is first kind of structural representation of the present utility model;

Fig. 2 is the plan view of following cap among Fig. 1;

Fig. 3 is first kind of structure user mode of the utility model figure;

Fig. 4 is second kind of structural representation of the utility model;

Fig. 5 is the plan view of following cap among Fig. 4;

Fig. 6 is second kind of structure user mode of the utility model figure.

1,2,3 first kind of embodiment of the present utility model described in conjunction with the accompanying drawings.This antitheft tightening nut is made of last cap (1), following cap (2) and antitheft steel bushing (3), be shaped on identical internal thread up and down on the cap, be shaped on zigzag fashion teeth (4) and (5) respectively on the upper-end surface of the lower end surface of last cap (1) and following cap (2), zigzag fashion teeth (4) and (5) are meshing with each other, and zigzag fashion teeth (4) and (5) intermeshing also necessary coincideing of internal thread of going up simultaneously on cap (1) and the following cap (2); The tooth depth of zigzag fashion teeth (4) and (5) is greater than the pitch of the internal thread on last cap (1) and the following cap (2) in addition, and the lower end outer wall of following cap (2) is shaped on round platform (6), and the external diameter of round platform (6) is less than following cap (2) maximum outside diameter size; Antitheft steel bushing (3) is a cylindrical tube, internal diameter is greater than the maximum outside diameter size of last cap (1) and following cap (2), the line of contact that highly is higher than zigzag fashion teeth (4) and (5), and the lower end surface of antitheft steel bushing (3) is shaped on reducing (7), the internal diameter of reducing (7) is greater than the external diameter of following cap (2) lower end round platform (6), maximum outside diameter size less than following cap (2) is sleeved on down on the cap (2), and makes round platform (6) be positioned at reducing (7).

Be shaped on two symmetrical zigzag fashion teeth (4) and (5) respectively on the upper-end surface of the lower end surface of last cap (1) and following cap (2).The profile of last cap (1) and following cap (2) is multiedge cylinder.

During use antitheft steel bushing (3) is sleeved on down on the round platform (6) of cap (2), then, to go up that cap (2) is worn on the nut (8) synchronously under the cap (1), clockwise with the fastening cap (1) of going up of common wrench, cap (2) screws to rely on its end-side teeth (4) and (5) to promote down, and can only be fastening, can not unload pine, following cap (2) fastening good after, as long as reverse loosening go up cap (1) just can be locked immediately, the power of unloading is big more, lock dead more, this is because the tooth depth of the teeth (4) of last cap (1) and following cap (2) end face and (5) greater than the pitch of its internal thread, makes the mutual contract of the flank of tooth between teeth (4) and (5) dead, and then makes cap locked, if in the time of need tightening up, only need use common wrench fastening clockwise upward cap (1) back and reverse locked getting final product, both can be locking, again can be antitheft.

4,5,6 describe second kind of embodiment of the present utility model in conjunction with the accompanying drawings, its basic structure is identical with embodiment one, and difference is down that cap (2) profile is a cylindrical body, prevents destructive dismounting, makes theftproof performance better.Use installation method identical with embodiment one.

Claims

1, the antitheft tightening nut of a kind of iron tower, it is characterized in that: this antitheft tightening nut is made of last cap (1), following cap (2) and antitheft steel bushing (3), be shaped on identical internal thread up and down on the cap, be shaped on zigzag fashion teeth (4) and (5) respectively on the upper-end surface of the lower end surface of last cap (1) and following cap (2), zigzag fashion teeth (4) and (5) are meshing with each other, and zigzag fashion teeth (4) and (5) intermeshing also necessary coincideing of internal thread of going up simultaneously on cap (1) and the following cap (2); The tooth depth of zigzag fashion teeth (4) and (5) is greater than the pitch of the internal thread on last cap (1) and the following cap (2) in addition, and the lower end outer wall of following cap (2) is shaped on round platform (6), and the external diameter of round platform (6) is less than following cap (2) maximum outside diameter size; Antitheft steel bushing (3) is a cylindrical tube, internal diameter is greater than the maximum outside diameter size of last cap (1) and following cap (2), the line of contact that highly is higher than zigzag fashion teeth (4) and (5), and the lower end surface of antitheft steel bushing (3) is shaped on reducing (7), the internal diameter of reducing (7) is greater than the external diameter of following cap (2) lower end round platform (6), maximum outside diameter size less than following cap (2) is sleeved on down on the cap (2), and makes round platform (6) be positioned at reducing (7).

2, the antitheft tightening nut of iron tower according to claim 1 is characterized in that: upward be shaped on two symmetrical zigzag fashion teeth (4) and (5) respectively on the upper-end surface of the lower end surface of cap (1) and following cap (2).

3, the antitheft tightening nut of iron tower according to claim 1 is characterized in that: going up cap (1) profile is multiedge cylinder, and following cap (2) profile is a cylindrical body.

4, the antitheft tightening nut of iron tower according to claim 1 is characterized in that: the profile that goes up cap (1) and following cap (2) is multiedge cylinder.