CN214742642U - Novel locknut - Google Patents

Abstract

The utility model discloses a novel locknut, including locknut, locknut includes the nut body and is located the inside elasticity locking ring of nut, and the inside cold-heading pressure forming of nut has a plurality of groups thread groove, and thread groove department pressure casting shaping that a plurality of groups thread groove equidistance was seted up and was located the upper end has the inner circle, and the lower extreme of inner circle is the slope form and sets up, and elasticity locking ring pressure equipment is in the inner circle, and the excircle of elasticity locking ring is anomalous geometry and interior round processing shaping has locking ring internal thread mouth, and the specification and the thread groove structure of locking ring internal thread mouth are the same. The utility model discloses a locknut for railway mainly includes the nut body and elasticity anti-loosening ring, and this structure does not influence the operation at the in-process that the bolt was screwed up on the one hand, and on the other hand can prevent loosening the ring through elasticity and reach spacing fixed to the bolt, locking purpose to simple structure has better practical value.

Description

Novel locknut

Technical Field

The utility model relates to a railway spare part technical field specifically is a novel locknut.

Background

Nuts are nuts, and are parts screwed together with bolts or screws for fastening, one of the necessary components of all production and manufacturing machines is classified into carbon steel, stainless steel, non-ferrous metals (such as copper) and the like according to the material, and nuts are used in many fields, including railway fields, where the railway has high requirements for the fastening of nuts to ensure the safety of the railway during operation.

However, the existing nuts for railways have the following problems in use: (1) the existing nut for the railway is similar to a common nut in structure, and because vibration and pressure are increased in the running process of the railway, the nut for fixing is not stable enough and has poor safety performance, and is easy to loosen, so that safety accidents occur; (2) the existing connection fastening technology has no enough self-locking force and corrosion resistance, cannot keep a fastening state for a long time, needs to arrange maintenance personnel to carry out high-frequency routing inspection, timely screws a loosened nut, replaces a rusted and damaged part, wastes certain manpower resources and increases the maintenance cost of the railway. For this reason, a corresponding technical scheme needs to be designed to solve the existing technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel locknut, it is similar with ordinary nut structure to have solved current nut for railway, because the railway is strengthened at the in-process vibration of operation and pressure, leads to being used for fixed nut to connect stability inadequately and the security performance is not good easily, produces easily not hard up to the incident appears, this problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel locknut, includes locknut, locknut includes the nut body and is located the inside elasticity locking ring of nut, the inside cold-heading pressure forming of nut parent has a plurality of screw thread groove of group, a plurality of groups the screw thread groove equidistance is seted up and is located the screw thread groove department die-casting shaping of upper end and has the inner circle, the lower extreme of inner circle is the slope form and sets up, elasticity locking ring pressure equipment is in the inner circle, the excircle of elasticity locking ring is anomalous geometry and interior round processing shaping has locking ring internal thread mouth, the specification of locking ring internal thread mouth is the same with the screw thread groove structure.

As a preferred embodiment of the present invention, the elastic anti-loosening ring is a bowl-shaped structure with a downward inner part in a free state, and the elastic anti-loosening ring is made of stainless steel and is movably disposed in the inner ring.

As a preferred embodiment of the present invention, the opening angle of the inner ring is greater than 90 degrees and the upper end is formed to have the arc-shaped convex ring, the inner diameter of the arc-shaped convex block and the inner diameter of the lower end of the inner ring are both smaller than the inner diameter of the elastic anti-loosening ring.

As a preferred embodiment of the present invention, the elastic anti-loosening ring is located at the same horizontal plane with the thread groove at the position of the inner circular thread opening of the anti-loosening ring in the free state.

As a preferred embodiment of the present invention, the lower end surface of the elastic anti-loosening ring has the same slope as that of the lower end surface of the inner ring.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. this scheme has designed a locknut for railway, mainly includes the nut body and elasticity anti-loosening ring, and this structure does not influence the operation at the in-process that the bolt was screwed up on the one hand, and on the other hand can reach spacing fixed to the bolt through elasticity anti-loosening ring, locking purpose to simple structure has better practical value.

2. The nut is made of high-quality high-strength steel and is formed by adopting a cold heading pressing process, the elastic anti-loosening ring is made of special-strength steel, the shape of the elastic anti-loosening ring is in a bowl shape with the downward inner part in a free state, the outer circle of the anti-loosening ring is in an irregular geometric shape so that the ring is clamped in the nut body, the anti-loosening ring does circular motion, and the anti-loosening ring can do vertical displacement motion after being stressed in the nut body. After the anti-loosening ring and the nut are integrally pressed, integral tapping is performed, the consistency of threads is ensured, the stability of the nut is ensured, manual periodical maintenance is not needed, and manpower and material resources are saved.

Drawings

Fig. 1 is a schematic view of the butt joint of the locknut and the bolt of the present invention;

fig. 2 is the internal structure diagram of the locknut of the present invention.

In the figure, 1, a nut body; 2. an elastic anti-loosening ring; 3. a thread groove; 4. an inner ring; 5. an inner circular thread opening of the anti-loosening ring; 6. an arc convex ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a novel anti-loose nut comprises an anti-loose nut, the anti-loose nut comprises a nut body 1 and an elastic anti-loose ring 2 positioned inside a nut body, a plurality of groups of thread grooves 3 are formed in the nut body 1 through cold heading and pressing, the thread grooves 3 at the upper end are equidistantly arranged and are formed into an inner ring 4 through die casting, the lower end of the inner ring 4 is obliquely arranged, the elastic anti-loose ring 2 is pressed in the inner ring 4, the excircle of the elastic anti-loose ring 2 is in an irregular geometric shape and is provided with an anti-loose inner circular thread opening 5 through inner circular processing, the specification of the anti-loose inner circular thread opening 5 is the same as that of the thread grooves 3, the elastic anti-loose ring 2 in the nut is downward at a certain angle in a natural state (not screwed into the screw), after the nut is completely screwed into the screw, the anti-loose ring can be automatically lifted up to a horizontal state under the action of pre-tightening force, at the moment, the anti-loose ring utilizes a lever principle in the axial direction, prying the screw up increases the clamping force of the nut. The internal thread of the anti-loosening ring is like a brake caliper, and the screw thread is tightly clamped in the radial direction within 360 degrees. Therefore, the locknut integrates the clamping force of the locknut, the axial clamping force of the lockring and the radial locking force, and the three forces are added to ensure that the locknut can play the best locking role.

Supplementary note 1: the left side of fig. 1 is the position of the elastic anti-loosening ring 2 in the non-tightened state and the right side is the position of the elastic anti-loosening ring 2 in the tightened state.

Further improved, as shown in fig. 1 and 2: the elastic anti-loosening ring 2 is of a bowl-shaped structure with the downward inner part in a free state, and the elastic anti-loosening ring 2 is made of stainless steel materials and is movably arranged in the inner ring 4.

Further improved, as shown in fig. 1 and 2: the opening angle of the inner ring 4 is larger than 90 degrees, the upper end of the inner ring is machined and formed to be provided with the arc-shaped convex ring 6, the inner diameter of the arc-shaped convex block and the inner diameter of the lower end of the inner ring 4 are both smaller than the inner diameter of the elastic anti-loosening ring 2, and the purposes of limiting the elastic anti-loosening ring 2 and placing the elastic anti-loosening ring away from the inner ring 4 can be achieved.

Further improved, as shown in fig. 1: the position of the circular thread opening 5 in the anti-loosening ring 2 in the free state and the thread groove 3 are on the same horizontal plane.

Specifically, the lower end face of the elastic anti-loosening ring 2 is identical and matched with the lower end face of the inner ring 4 in gradient, and the design mode facilitates the bolt to be screwed into the nut.

And (4) supplementary notes: the nut can be made of A2-70 stainless steel or 1.722542 CrMo4 low-temperature resistant steel.

When in use: the utility model discloses after the screw rod is twisted completely to the nut, locking ring can be automatic up lifting to horizontality under the effect of pretension, and locking ring utilizes lever principle at the axial this moment, with the screw rod prying up, this clamp force that has increased the nut. The inner thread of the locknut is like a brake caliper, the screw thread is tightly clamped in the radial direction within the range of 360 degrees, so that the locknut integrates the clamping force of the locknut, the axial clamping force of the locknut and the radial locking force, and the three forces are added to ensure that the locknut can play the best locking role.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The utility model provides a novel locknut, includes locknut, its characterized in that: the anti-loosening nut comprises a nut body (1) and an elastic anti-loosening ring (2) located inside the nut body, wherein the internal cold heading and pressing forming of the nut body (1) is provided with a plurality of groups of thread grooves (3) and a plurality of groups of thread grooves (3) are equidistantly arranged and are located at the upper end of the thread grooves (3) and are formed into an inner ring (4) in a die-casting mode, the lower end of the inner ring (4) is obliquely arranged, the elastic anti-loosening ring (2) is pressed in the inner ring (4), the outer circle of the elastic anti-loosening ring (2) is irregular in geometric shape and is provided with an inner circular thread opening (5) of the anti-loosening ring, and the specification of the inner circular thread opening (5) of the anti-loosening ring is identical to the structure of the thread grooves (3).

2. The novel locknut of claim 1, wherein: elasticity anti-loosening ring (2) are inside decurrent bowl-shaped structure under free state, elasticity anti-loosening ring (2) adopt stainless steel material and activity sets up in inner circle (4).

3. The novel locknut of claim 2, wherein: the opening angle of the inner ring (4) is larger than 90 degrees, an arc-shaped convex ring (6) is formed at the upper end of the inner ring in a machining mode, and the inner diameter of the arc-shaped convex block and the inner diameter of the lower end of the inner ring (4) are smaller than the inner diameter of the elastic anti-loosening ring (2).

4. The novel locknut of claim 3, wherein: the position of the inner circle thread opening (5) of the elastic anti-loosening ring (2) in a free state and the thread groove (3) are on the same horizontal plane.

5. The novel locknut of claim 4, wherein: the lower end face of the elastic anti-loosening ring (2) is the same as and matched with the lower end face of the inner ring (4) in gradient.

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