CN209083784U - One kind is from torsion stop nut - Google Patents

One kind is from torsion stop nut Download PDF

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Publication number
CN209083784U
CN209083784U CN201821505583.3U CN201821505583U CN209083784U CN 209083784 U CN209083784 U CN 209083784U CN 201821505583 U CN201821505583 U CN 201821505583U CN 209083784 U CN209083784 U CN 209083784U
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nut
stop nut
torsion
fastening
elastic connection
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CN201821505583.3U
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管铭
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Abstract

The utility model provides a kind of from torsion stop nut, it is characterized by: described be made of from torsion stop nut fastening nut, elastic connection bridge and stop nut, the stop nut is located at the tail portion of the fastening nut, is connect between the fastening nut and the stop nut by the elastic connection bridging of multiple equidistant annular arrays.The offer of utility model from torsion stop nut, by elastic connection bridge by fastening nut together with stop nut organic linking, and make to form the opposition being interacting on bolt after mutually generating rotation dislocation angle between two nuts by the torsion of elastic connection bridge itself, so that the frictional force between nut pitch and bolt tooth is increased and is existed always, prevents nut from loosening automatically under high shock conditions.

Description

One kind is from torsion stop nut
Technical field
The utility model relates to Machine Design manufacturing technology field, more particularly to it is a kind of from torsion stop nut and processing, Application method.
Background technique
It often uses and is bolted in Machine Design, bolt looseness is influence reliability of mechanical equipment and safety one A common factors, stop nut are mainly the following mode.
1. pairs of anti-loose nut, such as CN106837977A, this mode can be used in pretightning force and connect or be used in nothing The bolt connection for pre-tightening force request, is only used for vibrating lighter operating condition, especially the shock and vibration and varying load the case where, spiral shell Bolt meeting pretightning force loss slowly increases, and nut will eventually be caused to loosen, thread connection failure.
2.Hard lock stop nut, such as CN206708171U, by two kinds of nut groups for being up and down in " recessed " " convex " shape Synthesis.This mechanism can be used in pretightning force and connect or be used in without the bolt connection for pre-tightening force request, can be used for shaking Move serious operating condition.But difficulty of processing is big, at high cost.
3. Spiralock nut, there is one 30 degree of tapered ramp in the tooth bottom of screw thread, when bolt and nut is mutually tightened When, the cusp of bolt just tightly withstands on that apply must be on the tapered ramp of firm screw thread, to produce very big coupling mechanism force.But it is this Structure, which can be only used in, the bolt connection for pre-tightening force request, and connected piece cannot be too soft, once there is pretightning force loss will Lose anti-loose effect.And when tightening, to obtain certain bolt pretightening, need to apply bigger torque to overcome screw thread Frictional resistance between tooth.
4. spring washer is locking, such as CN105179434, this structure cannot be used in the especially hard junction of connector, If connector is harder than washer, the sword side of washer can not be embedded into connected piece surface, can not play anti-loose effect, can not use In the demanding junction of pretightning force, pretightning force loss can be caused to accelerate.
5. conical spring washer, the locking principle of conical spring washer is the spring washer meeting after spring washer is flattened A lasting elastic force is generated, makes to generate contact pressure between nut inner thread and the external screw thread of bolt, this pressure generation rubs The moment of resistance is wiped, to prevent nut loosening.Conical spring washer is higher than opening elastic washer rigidity, that is, much compression amount Larger, anti-loosing effect is more preferable for the pressure of generation.This mechanism is not suitable for the demanding junction of pretightning force.
6. two-fold self-locking washer, this washer is big pitch face on one side, has radial sawtooth in the another side of washer. NORD-LOCK washer is that the big flank of tooth is opposite, mounted in pairs.When tightening bolt or nut, radial sawtooth, which is tightly bitten, to be connect Contacting surface keeps NORD-LOCK washer relatively fixed with nut and connector contact surface respectively, only allows the opposite shifting between big pitch face It is dynamic.Any loosening trend of bolt or nut is all prevented by this wedging effect of big sawtooth.Two panels NORD-LOCK washer it Between lifting distance be greater than because of screw thread sliding caused by the distance that is lifted of bolt or nut.This mechanism cannot be used in connection surface Especially hard junction, when connection surface is especially hard, radial sawtooth can not bite contact surface, cannot play anti-loose effect. Washer has positive and negative, does not have anti-loose effect if anti-loaded, the junction not pre-tightened can not be used.Connector is too soft to be also This washer cannot be used.
As it can be seen that stop nut in the prior art, does not have from torque locking function, thus applicable place has office It is sex-limited, based on the above situation, it is necessary to design the stop nut that a kind of structure is simple, adapts to larger vibration workplace.
Utility model content
It cannot be applicable in that pretightning force variation, surface hardness be different, field of serious vibration existing for existing stop nut to overcome The technical issues of conjunction, the utility model provide one kind from torsion stop nut and processing, application method, can effectively overcome existing Defect existing for technology.
The technical solution of the utility model is: a kind of from torsion stop nut, it is characterised in that: described from the locking spiral shell of torsion Mother is made of fastening nut, elastic connection bridge and stop nut, and the stop nut is located at the tail portion of the fastening nut, described It is connect between fastening nut and the stop nut by the elastic connection bridging of multiple equidistant annular arrays.
On this basis, the elastic connection bridging connects the end face in the rib portion of the stop nut and the fastening nut, The elastic connection bridge is square prism structure, and the radial thickness of the elastic connection bridge is slightly less than the described locking of junction The radial thickness of nut or/and the fastening nut.
On this basis, the lateral surface of the elastic connection bridge has and the stop nut or/and the fastening nut Identical prismatic structure.
As a preferred embodiment, the stop nut and the fastening nut are hex nut, the elasticity Connecting bridge is three, in the end face for connecting the corner angle of the stop nut and the fastening nut that is intervally arranged.
On this basis, the fastening nut, elastic connection bridge and stop nut are structure as a whole, the fastening nut with Force direction of the stop nut on bolt be not on the contrary, the elastic connection bridge is contacted with bolt.
On this basis, described to be process from torsion stop nut using elastic material, the elastic material is metal Material or nonmetallic materials.
The fastening nut, elastic connection bridge and stop nut play the role of fastening respectively, twisting force and locking act on, though Right each section effect is different, but this three parts is an organic whole again.
It is described from torsion stop nut be not installed on bolt when, the fastening nut exists between each other with stop nut Rotary shifted angle, the dislocation angle can be left or right rotation.The size of the dislocation angle is 5-45 °, further Preferably 5-30 °.
It is described from torsion stop nut be mounted on bolt when, the fastening nut and the mutual dislocation of stop nut Angle is 0, and the fastening nut and stop nut form contrary active force on bolt.
The utility model additionally provides a kind of processing method from torsion stop nut, which is characterized in that including walking as follows It is rapid:
Step 1, it machines: elastic blank being processed into and is made of fastening nut, stop nut and elastic connection bridge Integral structure, the elastic connection bridge are at least 3, arrangement annular in shape equidistant be connected to fastening nut and stop nut it Between;
Step 2, rotate: making between stop nut and fastening nut with screw thread central axes axis rotation certain angle and Stop nut rotation direction is opposite with screw thread tightening direction;
Step 3, it quenches: quenching heat treatment being carried out to the semi-finished product of offset angular after rotation, keeps its elastic connection bridge rich Elastic force.
In the machining steps, the elasticity blank material carried out annealing before machining;The fastening spiral shell Female screw thread with stop nut must a knife process, it is ensured that the consistency of thread pitch and the integrality of screw thread up and down.
In the spin step, include the following steps:
201: positioning tool being inserted into threaded hole, makes stop nut stop nut rotation direction that can only surround screw thread axis Line rotation, the positioning shaft diameter of the positioning tool are slightly less than diameter of thread;
202: fixing fastening nut with tool, then block stop nut with rotation tool, using screw thread central axes as axle center It turns an angle, rotation direction and screw thread tightening direction turn on the contrary, stop nut and fastening nut is made to be staggered certain angle Locating shaft is extracted after dynamic.
The utility model additionally provides a kind of application method from torsion stop nut, which is characterized in that including walking as follows It is rapid:
401, it resets: mutually exerting on certain torsion between stop nut and fastening nut with fixture, be at The state that reset state, i.e. offset angular are zero;
402, it tightens: stop nut and fastening nut is being kept in the reset state with fixture, by fastening nut, locking spiral shell Mother is screwed into bolt until tightening;
403, it unloads power: successively unclamping fixture and impact wrench, shed application external force, make between stop nut and fastening nut Since the effect of elastic connection bridge generates reversed twisting force on bolt.
Compared with prior art, the utility model has the beneficial effects that
(1) offer of the utility model from torsion stop nut, by elastic connection bridge by fastening nut and locking spiral shell Female organic linking together, and is made after mutually generating rotation dislocation angle between two nuts by the torsion of elastic connection bridge itself And the opposition being interacting on bolt is formed, so that the frictional force between nut pitch and bolt tooth is increased and is deposited always Preventing nut from loosening automatically under high shock conditions.
(2) offer of the utility model from torsion stop nut, can made according to pretightning force occasion of different sizes The process of making makes fastening nut and stop nut generate different size of dislocation angle respectively, can also be according to the workplace of bolt Rotate the dislocation angle of left or right rotation;And can according to the difference of the big ting model of needs and stop nut of different occasions, Doing respective handling to elastic connection bridge in hardening phase makes it generate different torsion, can be applicable in pretightning force variation, surface it is hard Different, serious vibration occasion is spent, thus it is applied widely.
(3) offer of the utility model from torsion stop nut, structure is simple, and processing cost is low, it is only necessary to three step Suddenly can working process, and it is easy to use.
Detailed description of the invention
Fig. 1 is the locking schematic diagram from torsion stop nut of the utility model;
Fig. 2 is the semi-finished product structure figure after the machining in the utility model;
Fig. 3 is the semi-finished product structure figure of the spin step in the utility model;
Fig. 4 is the structure chart from the quenched finished product of torsion stop nut of the utility model;
Fig. 5 is to apply torsion in the utility model to make the structure chart after fastening nut and stop nut reset;
Fig. 6 is the structural schematic diagram from torque nut and bolt installation of the utility model;
Appended drawing reference is as follows in figure, and fastening nut 1, elastic connection bridge 2 and stop nut 3, fixture 5, are determined bolt 4 Position tooling 6.
Specific embodiment
Below in conjunction with drawings and examples, the present invention will be further described in detail.It should be appreciated that this place is retouched The specific embodiment stated only to explain the utility model, is not used to limit the utility model.
Embodiment 1
As Figure 1-Figure 5, a kind of from torsion stop nut, it should be from torsion stop nut by fastening nut 1, elastic connection Bridge 2 and stop nut 3 are constituted, and stop nut 3 is located at the tail portion of fastening nut 1, passes through between fastening nut 1 and stop nut 3 The elastic connection bridge 2 of multiple equidistant annular arrays connects.
Shown in Fig. 2, Fig. 4, the end face of elastic connection bridge 2 connection anti-loose nut 3 and the rib portion of fastening nut 1, elastic connection Bridge 2 is square prism structure, and the radial thickness of elastic connection bridge 2 is slightly less than the stop nut 3 or/and fastening nut of junction 1 radial thickness.
In addition, the lateral surface of elastic connection bridge 2 has prismatic structure identical with stop nut 3 or/and fastening nut 1.
As a preferred embodiment, stop nut 3 and fastening nut 1 are hex nut, elastic connection bridge 2 is three Item, in the end face of the corner angle of be intervally arranged connection anti-loose nut 3 and fastening nut 1.
As shown in Figure 1, fastening nut 1, elastic connection bridge 2 and stop nut 3 are structure as a whole, fastening nut 1 with it is locking Force direction of the nut 3 on bolt be not on the contrary, elastic connection bridge 2 is contacted with bolt.
On this basis, it is process from torsion stop nut using elastic material.
Fastening nut, elastic connection bridge and stop nut play the role of fastening respectively, twisting force and locking act on, although respectively Partial action is different, but this three parts is an organic whole again.
As shown in figure 4, from torsion stop nut be not installed on bolt when, fastening nut is deposited between each other with stop nut In rotary shifted angle, the angle that misplaces can be left or right rotation.The size of the dislocation angle is 5-45 °, further excellent It is selected as 5-30 °.
As shown in fig. 6, from torsion stop nut be mounted on bolt when, fastening nut and the mutual mistake of stop nut Parallactic angle degree is 0, and fastening nut and stop nut form contrary active force on bolt.
Embodiment 2
A kind of processing method from torsion stop nut, which comprises the steps of:
Step 1, it machines: elastic blank being processed into and is made of fastening nut 1, stop nut 3 and elastic connection bridge 2 Integral structure, elastic connection bridge 2 is at least 3, arrangement annular in shape equidistant be connected to fastening nut 1 and stop nut 3 it Between;In this step, elastic blank material carried out annealing before machining;The screw thread of fastening nut 1 and stop nut 3 Must a knife process, it is ensured that the upper and lower consistency of thread pitch and the integrality of screw thread.Semi-finished product such as Fig. 2 after machining It is shown.
Step 2, it rotates: making between stop nut 3 and fastening nut 1 with screw thread central axes axis rotation certain angle simultaneously And 3 rotation direction of stop nut is opposite with screw thread tightening direction;In spin step, include the following steps:
201: positioning tool being inserted into threaded hole, makes 3 rotation direction of stop nut stop nut can only be in screw thread Axis rotation, the positioning shaft diameter of positioning tool are slightly less than diameter of thread;
202: fixing fastening nut with tool, then block stop nut 3 with rotation tool, using screw thread central axes as axle center Turn an angle, rotation direction and screw thread tightening direction on the contrary, stop nut 3 and fastening nut 1 is made to be staggered certain angle, Locating shaft is extracted after rotation.Semi-finished product are as shown in Figure 3.
Step 3, it quenches: quenching heat treatment being carried out to the semi-finished product of offset angular after rotation, keeps its elastic connection bridge rich Elastic force, finished product are as shown in Figure 4.
Embodiment 3
A kind of application method from torsion stop nut, which comprises the steps of:
401, it resets: mutually exerting on certain torsion between stop nut and fastening nut with fixture, be at The state that reset state, i.e. offset angular are zero;As shown in Figure 5.
402, it tightens: stop nut and fastening nut is being kept in the reset state with fixture, by fastening nut, locking spiral shell Mother is screwed into bolt until tightening;
403, it unloads power: successively unclamping fixture and impact wrench, shed application external force, make between stop nut and fastening nut Since the effect of elastic connection bridge generates reversed twisting force on bolt.As shown in Figure 6.
The offer of the utility model from torsion stop nut, fastening nut and stop nut are had by elastic connection bridge Machine links together, and makes between two nuts mutually to generate shape after rotation dislocation angle by the torsion of elastic connection bridge itself At the opposition being interacting on bolt, the frictional force between nut pitch and bolt tooth is made to increase and exist always, prevented Only nut loosens automatically under high shock conditions.
The preferred embodiment of the utility model has shown and described in above description, as previously described, it should be understood that this is practical new Type is not limited to forms disclosed herein, and should not be regarded as an exclusion of other examples, and can be used for various other groups Conjunction, modification and environment, and above-mentioned introduction or the technology of related fields can be passed through within the scope of the inventive concept described herein Or knowledge is modified.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, then It all should be in the protection scope of the appended claims for the utility model.

Claims (10)

1. a kind of from torsion stop nut, it is characterised in that: it is described from torsion stop nut by fastening nut (1), elastic connection Bridge (2) and stop nut (3) are constituted, and the stop nut (3) is located at the tail portion of the fastening nut (1), the fastening nut (1) it is connect between the stop nut (3) by the elastic connection bridge (2) of multiple equidistant annular arrays.
2. according to claim 1 from torsion stop nut, it is characterised in that: described in elastic connection bridge (2) connection The end face in the rib portion of stop nut (3) and the fastening nut (1), the elastic connection bridge (2) are square prism structure, institute The radial thickness for stating elastic connection bridge (2) is slightly less than the stop nut (3) or/and the fastening nut (1) of junction Radial thickness.
3. according to claim 2 from torsion stop nut, it is characterised in that: the lateral surface of the elastic connection bridge (2) With with the stop nut (3) or/and the identical prismatic structure of the fastening nut (1).
4. according to claim 1-3 from torsion stop nut, it is characterised in that: the stop nut (3) with The fastening nut (1) is hex nut, and the elastic connection bridge (2) is three, connects the stop nut in being intervally arranged (3) with the end face of the corner angle of the fastening nut (1).
5. according to claim 1 from torsion stop nut, it is characterised in that: the fastening nut (1), elastic connection bridge (2) and stop nut (3) is structure as a whole, the fastening nut (1) and the active force side of the stop nut (3) on bolt To on the contrary, the elastic connection bridge (2) is not contacted with bolt.
6. according to claim 1 from torsion stop nut, it is characterised in that: the fastening nut and stop nut are mutual Between there is rotary shifted angle, the dislocation angle is left or right rotation.
7. according to claim 6 from torsion stop nut, it is characterised in that: the size of the dislocation angle is 5-45 Degree.
8. according to claim 6 or 7 from torsion stop nut, it is characterised in that: described to be installed from torsion stop nut When on bolt, the fastening nut and the mutual dislocation angle of stop nut are 0, the fastening nut and stop nut Contrary active force is formed on bolt.
9. according to claim 8 from torsion stop nut, it is characterised in that: the fastening nut (1) and stop nut (3) screw thread is processed using a knife, and the fastening nut (1) and the screw pitch of the screw thread of stop nut (3) are with uniformity, Screw thread has integrality.
10. according to claim 1 from torsion stop nut, it is characterised in that: described to use bullet from torsion stop nut Property material be process, the elastic material be metal material or nonmetallic materials.
CN201821505583.3U 2018-09-14 2018-09-14 One kind is from torsion stop nut Active CN209083784U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821505583.3U CN209083784U (en) 2018-09-14 2018-09-14 One kind is from torsion stop nut

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108895080A (en) * 2018-09-14 2018-11-27 管铭 One kind is from torsion stop nut and processing, application method
CN110374980A (en) * 2019-07-22 2019-10-25 新昌县远轴工业设计有限公司 A kind of fast self-locking formula nut structure and its assembly and application method
CN112392835A (en) * 2020-11-16 2021-02-23 浙江瑞昭科技股份有限公司 Fastener with locking function

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108895080A (en) * 2018-09-14 2018-11-27 管铭 One kind is from torsion stop nut and processing, application method
CN110374980A (en) * 2019-07-22 2019-10-25 新昌县远轴工业设计有限公司 A kind of fast self-locking formula nut structure and its assembly and application method
CN110374980B (en) * 2019-07-22 2020-04-10 温州思林工业设计有限公司 Quick self-locking nut structure and assembling and using method thereof
CN112392835A (en) * 2020-11-16 2021-02-23 浙江瑞昭科技股份有限公司 Fastener with locking function
CN112392835B (en) * 2020-11-16 2022-03-15 浙江瑞昭科技股份有限公司 Fastener with locking function

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