CN206458704U

CN206458704U - Stop nut

Info

Publication number: CN206458704U
Application number: CN201720099025.0U
Authority: CN
Inventors: 徐志坤; 谷青林; 蒲春雷; 孙建国
Original assignee: Huatian Engineering and Technology Corp MCC
Current assignee: Huatian Engineering and Technology Corp MCC
Priority date: 2017-01-23
Filing date: 2017-01-23
Publication date: 2017-09-01
Anticipated expiration: 2027-01-23

Abstract

The utility model discloses a kind of stop nut, larger moment of torsion is needed mainly for the pairs of anti-loose nut under prior art, unhandy problem, propose a kind of simple in construction, reliable stop nut of installation, including a nut, it is provided with the flank of nut on an inner groove, the lateral wall of nut and is provided with an outer groove, inner groove basal diameter is more than outer groove basal diameter；The midfeather of inner groove and the axially spaced setting of outer groove, outer groove and inner groove is deformation section, and the both sides of the inner groove are respectively preceding thread section and rear thread section；The front end face of nut is provided with an anti-porosity, and anti-porosity runs through inner groove and outer groove.The utility model is deformed by the deformation section between outer groove and inner groove, nut preceding thread section and the screw thread of rear thread section is set to be adjacent to screw flight front and rear sides, and due to coordinating section and locking section to be integrated making, will not relatively rotate, therefore anti-loosing effect is reliable.

Description

Stop nut

Technical field

The utility model is related to a kind of stop nut.

Background technology

Threaded connection is widely used in plant equipment, but the reason such as vibration, the impact of equipment in the running is influenced whether The tightness and reliability of threaded connection.Therefore the locking of threaded connection is just must take into consideration in visual plant and key position to ask Topic.

Double nuts structure is a kind of locking thread mechanism being most widely used, although its structure is simple, anti-loosing effect It is decided by screw-down torque during two nut installations, it is higher to installation requirement, it otherwise will weaken the locking effect of double nuts structure Fruit even results in the locking failure of double nuts structure.

If in addition, the size of connection screw thread is larger, very big moment of torsion is accomplished by when installing double nut, installs and be just stranded very much It is difficult.

Utility model content

In view of the above-mentioned problems, the utility model provides a kind of simple in construction, reliable stop nut of installation.

It is provided with to reach on above-mentioned purpose, the utility model stop nut, including a nut, the flank of the nut An outer groove is provided with one inner groove, the lateral wall of the nut, the inner groove basal diameter is more than the outer groove bottom Face diameter；The midfeather of the inner groove and the axially spaced setting of the outer groove, the outer groove and the inner groove For deformation section, the both sides of the inner groove are respectively preceding thread section and rear thread section；The front end face of the nut, which is provided with one, to be prevented Porosity, the anti-porosity runs through the inner groove and the outer groove.

Further, the part of anti-described locking section of the porosity correspondence is unthreaded hole, described to loosen the cooperation of hole correspondence The part of section is screwed hole.

Further, the basal diameter of the inner groove is straight more than the reference diameter and the anti-porosity of the anti-porosity Footpath sum；The inner groove basal diameter is more than the outer groove basal diameter；

And/or,

The basal diameter of the outer groove is less than the reference diameter of the anti-porosity and the difference of the locking bore dia；Institute Inner groove basal diameter is stated more than the outer groove basal diameter.

Further, the opening of outer groove is provided with a sealing ring, and the sealing ring is matched somebody with somebody with outer shroud channel opening sealing Close.

Further, the thickness of the deformation section vertically is 1-5mm.

Further, described locking section of diameter is less than the diameter of the cooperation section, and each anti-porosity is along the nut Circumference be uniformly distributed.

Further, the outer groove is arranged on the front side of the inner groove.

When the utility model stop nut is installed, rear side is first screwed in, after being installed in place, then inserts screws into nut front side end In the anti-porosity in face.During screw-driving, when screwing force is reached to a certain degree, can make inside and outside two groove in nut it Between part (L sections) when deforming, the left surface of front side threaded portion ridge and connecting bolt ridge on nut inner ring Left surface compress, the right surface of rear side threaded portion ridge is pressed with the right surface of connecting bolt ridge on nut inner ring Tightly, so it is achieved that the locking of nut.

In addition, the utility model stop nut is an entirety, will not occur relatively between two sections of internal threads before and after nut Rotate, thus improve nut at work by impact shock when locking reliability.

The utility model stop nut anti-loosing effect is good, simple in construction, without to control to twist as double nuts structure during installation The size of tight moment of torsion, install convenient, required moment of torsion is small during locking, it is adaptable to the threaded connection of big specification.

Brief description of the drawings

Fig. 1 is the sectional view of the embodiment 1 of the utility model stop nut；

Fig. 2 is enlarged drawing at the I of Fig. 1；

Fig. 3 be the utility model stop nut embodiment 1 install after thread pitch schematic diagram.

Embodiment

The utility model is further described with reference to Figure of description.

" preceding " in the utility model refer to fasten on nut finish it is rear away from by the side of fastening workpiece, " rear " refer to by Nut fastening finishes rear close to by the side of fastening workpiece；The reference circle that anti-porosity in the utility model is refers to nut The center of circle is the center of circle, the circle formed to prevent the distance between the porosity center of circle and nut center of circle by radius.

Embodiment 1

As Figure 1-3, the present embodiment provides a kind of stop nut；As shown in figure 1, the present embodiment stop nut is at least wrapped Include screw 1, dust ring 2 and nut 3.Wherein, screw 1 and the anti-porosity of the anterior end surface of nut 3 coordinate, for locking nut；It is anti- Konisphere 2 is arranged on the groove on the outer ring of nut 3, for preventing dust and other impurities from falling into the groove, so as to influence nut just Often use.

On the outer ring of nut 3, there are a groove, groove diameter B close to front side；On the inner ring of nut 3, have one recessed close to rear side Nut inner thread is divided into front and rear two sections by groove, groove diameter C, groove, and the distance between inside and outside two grooves are L.

Groove diameter B on the outer ring of nut 3<Groove diameter C on A-D, the inner ring of nut 3>A+D；And between two grooves Can not be excessive apart from L, otherwise nut 3 be difficult to it is locking, or even can not be locking；The thickness of L sections in the present embodiment is taken as 1mm.

The centre of nut 3 is to be evenly distributed with several anti-porosities on tapped through hole, the anterior end surface circumferencial direction of nut 3. The form of anti-porosity is：It is circular hole using inner ring groove as boundary, on front side of inner ring groove, aperture is more than screw diameter；Outer ring groove Rear side is screwed hole, and thread size D, screw thread hole depth will take into full account the length and stroke of screw, screwed hole reference diameter A.

Screw 1 and the anti-porosity of the anterior end surface of nut 3 coordinate, for locking nut.

Dust ring 2 is arranged on the groove on the outer ring of nut 3, for preventing dust and other impurities from falling into the groove, so that shadow The normal of nut is rung to use.

When the present embodiment stop nut is installed, nut 3 is screwed in from rear side, after being installed in place, then screw 2 is screwed into spiral shell successively In the screwed hole of female 3 anterior end surfaces.In the rundown process of screw 1, the part (L between inside and outside two groove in nut 3 can be made Section) when deforming, the preceding surface of front side threaded portion ridge is pressed with the preceding surface of connecting bolt ridge on the inner ring of nut 3 Tightly, the right surface of rear side threaded portion ridge is compressed with the right surface of connecting bolt ridge on the inner ring of nut 3, thus real The locking of nut 3 is showed.

Fig. 2 show the thread pitch schematic diagram after stop nut is installed.

Because the present embodiment stop nut is will not occur relatively between the two sections of internal threads in left and right in the middle of an entirety, nut Rotate, thus improve nut at work by impact shock when locking reliability.

Embodiment 2

The present embodiment provides a kind of stop nut, a kind of stop nut is present embodiments provided, as illustrated, the present embodiment Stop nut at least includes screw, dust ring and nut.Wherein, screw and the anti-porosity of nut anterior end surface coordinate, for locking Tight nut；Dust ring is arranged on the groove on nut outer ring, for preventing dust and other impurities from falling into the groove, so as to influence spiral shell Female normally uses.

On the outer ring of nut, there are a groove, groove diameter B close to front side；On the inner ring of nut, have one recessed close to rear side Nut inner thread is divided into front and rear two sections by groove, groove diameter C, groove, and the distance between inside and outside two grooves are L.

Groove diameter B on nut outer ring<C, and B is not less than the groove diameter C on A-D, nut inner ring>A+D.

The centre of nut is to be evenly distributed with several anti-porosities on tapped through hole, nut anterior end surface circumferencial direction.It is anti- The form of porosity is：It is circular hole using inner ring groove as boundary, on front side of inner ring groove, aperture is more than screw diameter；After the groove of outer ring Side is screwed hole, and thread size D, screw thread hole depth will take into full account the length and stroke of screw, screwed hole reference diameter A.

Screw and the anti-porosity of nut anterior end surface coordinate, for locking nut.

Dust ring is arranged on the groove on nut outer ring, for preventing dust and other impurities from falling into the groove, so as to influence The normal of nut is used.

When the present embodiment stop nut is installed, nut is screwed in from rear side, after being installed in place, then screw is screwed into nut successively In the screwed hole of anterior end surface.During screw-driving, (L sections) of the part hair between inside and outside two groove in nut can be made During the shape that changes, the preceding surface of front side threaded portion ridge is compressed with the preceding surface of connecting bolt ridge on nut inner ring, spiral shell The right surface of rear side threaded portion ridge is compressed with the right surface of connecting bolt ridge on female inner ring, is so achieved that spiral shell Female is locking.

Embodiment 3

The present embodiment provides a kind of stop nut；The present embodiment stop nut at least includes screw, dust ring and nut.Its In, screw and the anti-porosity of nut anterior end surface coordinate, for locking nut；Dust ring is arranged on the groove on nut outer ring On, for preventing dust and other impurities from falling into the groove, so as to influence the normal of nut to use.

Groove diameter B on nut outer ring<Groove diameter C on A-D, nut inner ring>B, and C is not more than A+D.

Embodiment 4

On the outer ring of nut, there are a groove, groove diameter B close to rear side；On the inner ring of nut, have one recessed close to front side Nut inner thread is divided into front and rear two sections by groove, groove diameter C, groove, and the distance between inside and outside two grooves are L.

Groove diameter B on nut outer ring<Groove diameter C on A-D, nut inner ring>A+D.L sections in the present embodiment Thickness is taken as 5mm.

More than, preferred embodiment only of the present utility model, but protection domain of the present utility model is not limited thereto, and appoints What those familiar with the art the change that can readily occur in or replaces in the technical scope that the utility model is disclosed Change, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with claim The protection domain defined is defined.

Claims

1. a kind of stop nut, it is characterised in that：Including a nut, an inner groove, institute are provided with the flank of the nut State and an outer groove is provided with the lateral wall of nut, the inner groove basal diameter is more than the outer groove basal diameter；It is described The midfeather of inner groove and the axially spaced setting of the outer groove, the outer groove and the inner groove is deformation section, institute The both sides for stating inner groove are respectively preceding thread section and rear thread section；The front end face of the nut is provided with an anti-porosity, described anti- Porosity runs through the inner groove and the outer groove.

2. stop nut as claimed in claim 1, it is characterised in that：Part before the anti-porosity correspondence inner groove is Part after unthreaded hole, the anti-porosity correspondence inner groove is screwed hole.

3. stop nut as claimed in claim 1, it is characterised in that：The basal diameter of the inner groove is more than the anti-porosity Reference diameter and the locking bore dia sum；The inner groove basal diameter is more than the outer groove basal diameter；

And/or,

The basal diameter of the outer groove is less than the reference diameter of the anti-porosity and the difference of the locking bore dia；In described Annular groove basal diameter is more than the outer groove basal diameter.

4. stop nut as claimed in claim 3, it is characterised in that：The opening of outer groove is provided with a sealing ring, the sealing Circle is sealed with the outer shroud channel opening to be coordinated.

5. stop nut as claimed in claim 1, it is characterised in that：The thickness of the deformation section vertically is 1-5mm.

6. stop nut as claimed in claim 1, it is characterised in that：The race diameter of the preceding thread section is less than the rear thread The race diameter of section, circumference of each anti-porosity along the nut is uniformly distributed.

7. stop nut as claimed in claim 1, it is characterised in that：The outer groove is arranged on the front side of the inner groove.