CN2672357Y

CN2672357Y - Novel anti-loose anti-dismantling nut

Info

Publication number: CN2672357Y
Application number: CN 200420002844
Authority: CN
Inventors: 周国平
Original assignee: Individual
Current assignee: Room 311 Unit 3 No 2 Balihuyizhi Road Xunyang
Priority date: 2004-01-13
Filing date: 2004-01-13
Publication date: 2005-01-19
Anticipated expiration: 2014-01-13

Abstract

The utility model relates to a novel anti-loose anti-dismantling apparatus for screwed connecting pieces, in particular to a novel anti-loose anti-dismantling nut used for electric-force steel towers. The novel anti-loose anti-dismantling nut is characterized in that an ear (5) is arranged on the edge of a plastic plug (1) on the structural basis of primary anti-dismantling nuts; a groove whose two sections are cambered is symmetrically distributed on the female-screw wall of a nut (2), one groove is long, and the other groove is short. When the novel anti-loose anti-dismantling nut is provided, one ear of the plastic plug (1) of the novel anti-loose anti-dismantling nut presses against a steel ball (3) in a deep groove of the nut (2) when the plastic plug is ejected out of the inner cavity of the nut (2) by a bolt (8), and the steel ball (3) is prevented from contacting with a first tooth stripe on the head of the bolt (8); when the plastic plug (1) is unceasingly ejected out by the bolt (8), the ear (5) on the plastic plug (1) is ejected out in company with deformation, which can effectively prevent bolt (8) from clamping tightly; meanwhile, the long groove and the short groove are provided, and the novel anti-loose anti-dismantling apparatus forms a moment difference, which greatly enhances the anti-loose anti-dismantling ability of the nut.

Description

Novel anti-loosing and anti-assembling nut

Technical field

The utility model relates to the locking device in the threaded connector, especially for the novel anti-loosing and anti-assembling nut on the electric power tower.

Background technique

In the past, stolen in order to prevent in being threaded on the electric power tower as being connected between nut and the bolt, guarantee the safety of electric power in carrying, adopt locking device.Scyewed joint locking: have that frictional force is locking, mechanical means is locking and permanent stop is locking, and permanent stop locking be with welding, towards point, flange extruding, method such as bonding, but be not suitable for being threaded on the electric power tower.Present more advanced locking device, be 2 grooves that the cross section is an arc that the nut inner thread wall is provided with vertical symmetrical distribution, the anti-thing straight pin that unloads is installed in the groove, during nut precession bolt, adopt plastic core to lay straight pin in advance, fuse is filled in nut, and then the precession bolt, fuse is ejected, stay straight pin.Cumbersome, and owing to be that line contacts in straight pin and the curve bath, frictional force is bigger, be easy to nonstandard owing to straight pin itself or curve bath, and the situation of again revolving after stuck often takes place.Theftproof performance is poor in addition, can adopt into one to move back two ways and make straight pin withdraw from nut.Also having a kind of is to make straight pin into shot, but need when installing by manually shot being put in vertical two curve baths that are symmetrically distributed of nut, and on same plane, in nut precession bolt, plastic plug is ejected, in this process, bolt often withstands on shot the lower end of nut curve bath, nut can not continue precession, because shot enters in first worm tooth of bolt, nut also can't withdraw from and often be stuck.Secondly, the invar ball is placed on the interior same plane of curve bath, and shot and curve bath moment equal zero, and surface friction drag is little, the anti-poor performance of unloading.

Summary of the invention: the purpose of this utility model is at above-mentioned defective, and a kind of novel anti-loosing and anti-assembling nut is provided.

The technical solution of the utility model be in the utilization nut curve bath shot and bolt tooth apart between form " the some wedge yoke is buckled " principle and reach rotation and non-return and prevent the requirement of unloading.On original shot anti-assembling nut architecture basics, plastic plug (1) edge is provided with 1 ear (5); With 2 grooves that the cross section is an arc of vertical symmetrical distribution are arranged on nut (2) the internal thread wall, be set to a flute length, another groove is short.

The utility model has the advantages that when mounted, when plastic plug (1) is ejected nut (2) inner chamber by bolt (8), because being arranged on the stopper (1), ear pushes down the shot (3) in the deep trouth in the nut (2), prevent that shot (3) from contacting with first tooth line of bolt (8) head, when bolt (8) continues to eject plastic plug (1), ear (5) on the stopper (1) is along with distortion just is ejected, prevent the phenomenon that bolt (8) is stuck effectively, the length groove is arranged simultaneously, make device form a torque difference, the blocking and antiunloading ability of nut is strengthened greatly.

Description of drawings

Further describe embodiment below in conjunction with accompanying drawing.

Fig. 1 is a sectional view of the present utility model.

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

Fig. 3 is the schematic representation of plastic plug (1).

Fig. 4 is the schematic representation of the utility model when installing and using.

Embodiment

With reference to Fig. 1,1-plastic plug, 2-nut, 3-shot, 4-plastic washer.As shown, nut (2) is an anti-assembling nut, before use, earlier plastic plug (1) and shot (3) are put in the nut (2), plastic washer (4) and nut (2) snap-fit, as seen from the figure, 2 grooves that the cross section is an arc of vertical symmetrical distribution are arranged on nut (2) the internal thread wall then,, a flute length, another groove is short.

With reference to Fig. 2, be the right elevation of Fig. 1, find out the situation of the curve bath on the nut (2).

With reference to Fig. 3, it is the situation that 1 ear (5) is set on the plastic plug (1), its effect is when construction bolt, plastic plug (1) is when being ejected by bolt, and the shot (3) that the ear on it (5) is pushed down in the middle deep trouth of nut (2) makes first tooth line of bolt head not contact shot (3), when bolt continues to eject plastic plug (1), ear on it (5) is also along with distortion, thereby can be ejected smoothly, therefore, the phenomenon that bolt just can not occur being stuck.

With reference to Fig. 4, be the installation diagram of anti-loosing and anti-assembling nut when using.2-nut, 3-shot, 4-plastic washer, 6-plain nut, 7-fastener, 8-bolt.Anti-loosing and anti-assembling nut (2) at precession bolt (8) before, put shot (3) in its inner chamber earlier into and use plastic washer (4) snap-fit again with plastic plug (1), because curve bath is the length groove, then forms a torque difference, and the blocking and antiunloading ability of nut (2) is strengthened greatly.At this moment, bolt (8) continues precession nut (2), and plastic plug (1) is ejected, and installs also just to finish.Bolt (8) precession clockwise, and can not inhour screw out.

Claims

1. novel anti-loosing and anti-assembling nut, 2 grooves that the cross section is an arc that vertical symmetrical distribution is arranged on nut (2) internal thread wall, lay shot (3) in the groove, shot (3) partly rolls with the curve bath fornix and cooperates, with curve bath tip snap-fit, nut (2) inner chamber activity is combined with one and is used to install the plastic plug (1) of shot (3), and there are plastic washer (4) and its snap-fit in nut (2) end, it is characterized in that:

A, said plastic plug (1) edge are provided with 1 ear (5);

2 grooves that the cross section is an arc that vertical symmetrical distribution is arranged on b, said nut (2) the internal thread wall, a flute length, another groove is short.