CN202391921U

CN202391921U - Anti-loosening device for round nut

Info

Publication number: CN202391921U
Application number: CN2011204849457U
Authority: CN
Inventors: 魏征宇
Original assignee: Taiyuan Heavy Industry Co Ltd
Current assignee: Taiyuan Heavy Industry Co Ltd
Priority date: 2011-11-15
Filing date: 2011-11-15
Publication date: 2012-08-22
Anticipated expiration: 2021-11-15

Abstract

The utility model discloses an anti-loosening device for a round nut, which relates to a fastening piece and solves the anti-loosening problem of the round nut. The anti-loosening device for a round nut is characterized in that two threaded holes are machined on an end surface which is half sawn at the position 2-3 screw pitches away from the end surface in the axial direction of the round nut, and two bolts are respectively screwed into the two threaded holes. The anti-loosening device for a round nut has the advantages of even nut load bearing and good applicability, does not generate permanent damage, is convenient to install and disassemble, is simple to operate and is easy to realize.

Description

A kind of locking device of round nut

Technical field

The utility model relates to fastening piece, particularly a kind of locking device of round nut.

Background technique

Round nut is common fastening piece, in mechanical industry, is widely used.Under static load, the ability that is threaded self-locking conditions satisfied; The friction at nut pressure-bearing surface place also has the effect of loosening.But under impact, vibration or varying load, or when temperature variation is big, is connected with and becomes flexible, even unclamp.This just is prone to accidents.So when design is threaded, must consider locking problem.Locking root problem is to prevent relatively rotating of screw pair.Anti-loose method commonly used has:

1. increase frictional force (like Fig. 1, shown in Figure 2):, be used for the connection of of such little moment because elastic force is uneven, very unreliable more.

2. destroy screw pair (like Fig. 3, shown in Figure 4): dismounting back union piece can not be used again.

3. utilize metallic member directly to pin: can only be used for to hold the operating mode restriction of this metallic member.

Summary of the invention

The purpose of the utility model is to overcome the shortcoming of existing technology, and a kind of locking device of round nut is provided, and not only solves the locking problem of round nut, and has improved the join strength of screw pair.

The technical solution of the utility model is:

A kind of locking device of round nut; It is characterized in that: said locking device be at said round nut axial direction, cut on the half the end face apart from 2～3 pitch positions of end face; Process two tapped holes, be screwed into respectively in two said tapped holes with two screws.

The utility model compared with prior art has the following advantages and beneficial effect:

The device that loosens of the utility model adopts the destruction screw pair to realize that nut carries evenly, the unbalance loading situation can not occur; Since not permanent damage, easy installation and removal; Operation is simple, and applicability is good.

Description of drawings

Fig. 1 is the Relaxation Methods that the elastic force after the back cushion circle flattens vertically compresses screw pair;

Fig. 2 acts on the Relaxation Methods that screw pair is vertically compressed to the top after utilizing nut screwing clamping;

Fig. 3 loosens with the method for welding;

Fig. 4 loosens with the method for dashing point;

Fig. 5 utilizes lock washer to pin nut;

Fig. 6 is the structural representation (plan view) of the utility model;

Fig. 7 is the plan view of Fig. 6.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further.

Like Fig. 6, shown in 7; A kind of locking device of round nut; It is characterized in that: said locking device is to cut at the axial direction of said round nut 1, apart from 2～3 pitch positions of end face on the half the end face, processes two tapped holes, is screwed into respectively in two said tapped holes with two screws 2.

The method for using of the utility model: at first with round nut 1 at its axial direction, cut half 1-1 apart from 2～3 pitch positions of end face, make a call to two tapped holes at end face, the round nut radial direction is opened six hole 1-2, is convenient to the nut installation and removal.After nut and bolt are tightened, two screws 2 are screwed in two tapped holes, make round nut be out of shape.

Because local pitch changes, the gap of having eliminated screw pair, nut and bolt can be regarded an integral body as.Therefore not only solve nut and the bolted problem of loosening, and improved the rigidity of fastening piece.

During the round nut dismounting, screw is back-outed, made it recover thread pitch, promptly detachable.

Claims

1. the locking device of a round nut; It is characterized in that: said locking device is to cut at the axial direction of said round nut (1), apart from 2～3 pitch positions of end face on the half the end face; Process two tapped holes, be screwed into respectively in two said tapped holes with two screws (2).