CN209557457U

CN209557457U - A kind of locking anti-loosing anti-rust nut

Info

Publication number: CN209557457U
Application number: CN201920289285.3U
Authority: CN
Inventors: 李�远; 李宇龙; 李星星
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-07
Filing date: 2019-03-07
Publication date: 2019-10-29
Anticipated expiration: 2029-03-07

Abstract

The utility model discloses a kind of locking anti-loosing anti-rust nuts, the nut upper end is fixed with the anti-rust cap that can cover its opening, it effectively prevent soil, water, air, acid, the substances such as alkali, which enter, makes getting rusty for nut, the nut retaining anti-loosing effect is significant, bolt rotation, which is blocked, by locking tooth inside retaining ratchet snap ring realizes stopping function, during nut tightening nut lower end have locking teeth play back-out torque be greater than be screwed into 1.5 times of torque, nut loosening in high-frequency vibration when preventing long, there is the nut elasticity to hold hoop tightly, the part of locking teeth is protruded from during nut tightening by the upward holding portion of stress, holding subordinate end face is set not protrude from locking teeth, the use of locking teeth is not influenced, holding portion internally deforms, reduce the internal diameter for holding set tightly, increase its frictional force between assembly bolt, so that elasticity holds hoop deformation tightly Bolt is held tightly, is cooperated jointly with locking teeth, anti-loosing effect of nut when long in high-frequency vibration is further increased.

Description

A kind of locking anti-loosing anti-rust nut

Technical field

One kind that the utility model relates to use to a kind of nut field more particularly to railway concrete sleeper upstanding studs Locking anti-loosing anti-rust nut.

Background technique

Locking anti-loosing anti-rust nut mainly solves to be threadably coupled under the conditions of bad environments such as soil, water, air, acid, alkali Deng corrosion and work in prevent shake, prevent rust dead, prevent nut caused by loosening from falling off, the problems such as dismounting is difficult.By force Strong high-frequency vibration loosens concrete sleeper upright nut in groups, and rail fastening failure causes Rail inspection to change Become, seriously jeopardizes traffic safety.Currently, domestic railway working system mostly uses greatly plain nut to add traditional retaining of spring washer Method can guarantee that torque is constant in a short time, not move back button, but under the operating condition of long-term strong high-frequency vibration, be difficult to protect Torque as defined in demonstrate,proving, therefore railway maintenance department will employ large quantities of maintenance personals daily to the solidifying native sleeper of pipe interior lines road Upright nut is checked, multiple to twist, and reaches the requirement of 700Nm torque as defined in Ministry of Railways.

Utility model content

The technical problem to be solved by the utility model is to provide keep regulation to turn round for a long time in a kind of long-term high-frequency vibration Square, will not loose or dislocation, a kind of locking anti-loosing anti-rust nut for preventing rust dead in harsh environment.

In order to solve the above technical problems, technical solution adopted in the utility model is:

A kind of locking anti-loosing anti-rust nut, including nut are fixed with the anti-rust cap that can cover its opening in nut upper end, It is characterized by: nut upper end inner wall offers first annular groove, retaining spine is inlaid in the first annular groove Snap ring is taken turns, the retaining ratchet snap ring inner wall has the locking tooth of circumferential uniformly distributed multiple ratchet-likes；Nut lower end mask There is the locking teeth of ratchet-like, the locking teeth is integrated with nut；The nut lower end inner wall has greater than its Major Diam Reaming, the inner wall of the reaming upper end offer second annular groove, the flexible holding hoop of setting, the elasticity in the reaming Holding hoop tightly includes the annular collar for being stuck in second annular groove, is equipped with outer wall and reaming inner wall in the lower section of annular collar Fitting, inner diameter the holding set equal with nut thread major diameter, holding set lower end protrude from locking teeth, the holding set Upper circumferential direction equidistantly offers multiple notches, so that holding set tightly has multiple independent holding portions.

A further technical solution lies in: the nut upper end has the cylinder bulge loop upwardly extended, the cylinder bulge loop Annular slot is offered on outer wall, the anti-rust cap lower end has for the bayonet fixed with annular slot press fitting.

A further technical solution lies in: the tapered surface that the inner wall of the cylinder bulge loop is extended out in opening, top is inwardly Flanging forms first annular groove and fixes retaining ratchet snap ring.

A further technical solution lies in: the lower part of the nut inner hole is in the pyramidal structure of big mouth down, and big mouth is straight Diameter is greater than elasticity and holds hoop annular collar diameter tightly.

Generated beneficial effect is using the above scheme:

The nut structure is simple, and anti-loosing effect is good, and nut lower end has locking teeth, for increasing nut and fitting plane Between frictional force, play back-out torque be greater than be screwed into 1.5 times of torque, prevent nut loosening in long-term high-frequency vibration.

Flexible holding hoop is arranged in the nut, and the part that locking teeth is protruded from during nut tightening squeezes stress upwards Holding portion is pressed, so that holding subordinate end face is not protruded from locking teeth, does not influence the use of locking teeth, since outer wall and reaming inner wall paste It closes, so holding portion can only internally deform, to reduce the internal diameter for holding set tightly, increases its friction between assembly bolt Bolt is held tightly so that elasticity holds hoop deformation tightly, cooperates jointly with locking teeth, further increase nut high-frequency vibration when long by power In anti-loosing effect.

There is retaining ratchet snap ring the locking tooth of ratchet-like to be able to achieve the rotation of bolt one direction, and bolt can be by retaining when turning round Tooth blocks, and plays stopping function.

The nut is provided with the anti-rust cap that can cover its opening, completely cuts off nut interior and external environment, can effectively prevent Only the substances such as soil, water, air, acid, alkali, which enter, causes getting rusty for nut.

Detailed description of the invention

Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of retaining ratchet snap ring described in the utility model；

Fig. 3 is the isometric structural schematic diagram that elasticity described in the utility model holds hoop tightly.

Specific embodiment

Below with reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear Chu is fully described by, it is clear that described embodiment is a part of the embodiment of the utility model, rather than whole implementation Example.Based on the embodiments of the present invention, those skilled in the art are obtained without making creative work Every other embodiment, fall within the protection scope of the utility model.

Many details are explained in the following description in order to fully understand the utility model, but this is practical new Type can also be implemented using other than the one described here other way, and those skilled in the art can be without prejudice to this reality With doing similar popularization in the case where novel intension, therefore the utility model is not limited by the specific embodiments disclosed below.

As shown in FIG. 1 to 3, a kind of locking anti-loosing anti-rust nut, including nut 4 are fixed with and can cover in 4 upper end of nut The anti-rust cap 1 for covering its opening can effectively prevent the objects such as soil, water, air, acid, alkali for completely cutting off nut interior and external environment Matter, which enters, causes getting rusty for nut, and the 4 upper end inner wall of nut offers first annular groove 3, inlays in first annular groove 3 There is retaining ratchet snap ring 2,2 inner wall of retaining ratchet snap ring has the locking tooth of circumferential uniformly distributed multiple ratchet-likes；Locking tooth can be real Existing bolt one direction rotation, bolt can be blocked when turning round by locking tooth, play stopping function, locking tooth quantity should control locking tooth Number 2-4 are advisable, and structure is simply easily fabricated at this time.

4 lower end surface of nut has locking teeth 7, and the locking teeth 7 is integrated with nut 4, and locking teeth 7 is for increasing nut Frictional force between fitting plane plays and back-outs torque greater than being screwed into 1.5 times of torque, and nut is loose in high-frequency vibration when preventing long It is dynamic.

The 4 interior lower end inner wall of nut has the reaming 8 greater than its Major Diam, and the inner wall of 8 upper end of reaming opens up There is second annular groove 5, the flexible holding hoop 6 of setting in the reaming 8, it includes for being stuck in second that the elasticity, which holds hoop 6 tightly, Annular collar in annular groove 5, in the lower section of annular collar be equipped with outer wall be bonded with 8 inner wall of reaming, diameter of bore and nut 4 The equal holding set of Major Diam, holding set lower end protrude from locking teeth 7, the holding put on it is circumferential equidistantly offer it is more A notch, so that holding set tightly has multiple independent holding portions, it is annular recessed that the annular collar by flexible deformation sticks into second In slot 5, the elasticity holds hoop 6 tightly and uses elastic material, and such as rubber, nylon, the elasticity holds hoop 6 tightly, in 4 screwing operations of nut In protrude from the part of locking teeth 7 for the upward holding portion of stress, make to hold subordinate end face tightly and do not protrude from locking teeth 7, not shadow The use for ringing locking teeth 7, since outer wall is bonded with reaming inner wall, so holding portion can only internally deform, to reduce holding The internal diameter of set increases its frictional force between assembly bolt, holds bolt tightly so that elasticity holds hoop deformation tightly, with locking teeth 7 Common cooperation, further increases anti-loosing effect of nut when long in high-frequency vibration.

To be fixed convenient for anti-rust cap 1 and nut 4, which has cylinder bulge loop, has ring on the outside of the cylinder bulge loop Shape card slot, 1 lower end of anti-rust cap have for the bayonet fixed with annular slot press fitting.

The tapered surface that the inner wall of the 4 upper end cylinder bulge loop of nut is extended out in opening, top are recessed to inside edge formation first Slot 3 is fixed by retaining ratchet snap ring 2, prevents retaining ratchet snap ring 2 from cannot play the role of retaining with bolt rotation.

For the assembly for holding hoop 6 tightly convenient for 4 elasticity of nut, the lower part of 4 inner hole of nut is in the pyramidal structure of big mouth down, And big mouth diameter is greater than elasticity and holds 6 annular collar diameters of hoop tightly.

The above is only the preferred embodiments of the utility model, anyone content according to the present utility model is to the utility model The a little simple modification made, deformation and equivalent replacement each fall within the protection scope of the utility model.

Claims

1. a kind of locking anti-loosing anti-rust nut, including nut (4), the anti-of its opening can be covered by being fixed in nut (4) upper end It becomes rusty cap (1), it is characterised in that: nut (4) upper end inner wall offers first annular groove (3), the first annular groove (3) retaining ratchet snap ring (2) is inlaid in, retaining ratchet snap ring (2) inner wall has circumferential uniformly distributed multiple ratchet-likes Locking tooth；Nut (4) lower end surface has the locking teeth (7) of ratchet-like, and the locking teeth (7) is integrated with nut (4)；Institute Stating nut (4) interior lower end inner wall has the reaming (8) for being greater than its Major Diam, and the inner wall of reaming (8) upper end offers Second annular groove (5), the flexible holding hoop (6) of the interior setting of the reaming (8), it includes for card that the elasticity, which holds tightly and binds round (6), Annular collar in second annular groove (5) is bonded equipped with outer wall with reaming (8) inner wall, inner wall in the lower section of annular collar The diameter holding set equal with nut (4) Major Diam, holding set lower end protrude from locking teeth (7), and the holding is put on Circumferential direction equidistantly offers multiple notches, so that holding set tightly has multiple independent holding portions.

2. a kind of locking anti-loosing anti-rust nut according to claim 1, it is characterised in that: nut (4) upper end has The cylinder bulge loop upwardly extended offers annular slot on the cylinder bulge loop outer wall, and anti-rust cap (1) lower end, which has, to be used for The fixed bayonet with annular slot press fitting.

3. a kind of locking anti-loosing anti-rust nut according to claim 2, it is characterised in that: the inner wall of the cylinder bulge loop is in Be open the tapered surface extended out, and top forms first annular groove (3) to inside edge and fixes retaining ratchet snap ring (2).

4. a kind of locking anti-loosing anti-rust nut according to claim 1, it is characterised in that: under nut (4) inner hole Portion is in the pyramidal structure of big mouth down, and big mouth diameter is greater than elasticity holding and binds round (6) annular collar diameter.

5. a kind of locking anti-loosing anti-rust nut according to claim 1, it is characterised in that: the retaining ratchet snap ring (2) Inner wall has circumferential 2-4 uniformly distributed locking tooth.