CN209278317U - A kind of pairs of anti-loose nut bolt group with elastic bumps nut and rotary table hex nut composition - Google Patents

A kind of pairs of anti-loose nut bolt group with elastic bumps nut and rotary table hex nut composition Download PDF

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Publication number
CN209278317U
CN209278317U CN201821913426.6U CN201821913426U CN209278317U CN 209278317 U CN209278317 U CN 209278317U CN 201821913426 U CN201821913426 U CN 201821913426U CN 209278317 U CN209278317 U CN 209278317U
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China
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nut
rotary table
elastic bumps
frictional force
screw thread
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Expired - Fee Related
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CN201821913426.6U
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Chinese (zh)
Inventor
韦志锋
曾小波
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Chongqing University of Science and Technology
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Individual
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Publication of CN209278317U publication Critical patent/CN209278317U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

A kind of pairs of anti-loose nut bolt group with elastic bumps nut and rotary table hex nut composition, it is interacted using the upstanding elastomeric protrusion of raised nut and the frustum cone side of rotary table hex nut, when screw thread pair pre-tightens, other than axial pre tightening force, it increases a radial forces more, forms pressure and frictional force bigger between screw thread pair.Simultaneously also as elastic bumps and wedge shaped side interact, an additional rubbing action point is increased again, increase additional pressure and frictional force, improve total frictional force limiting value, total frictional force limiting value is much larger than frictional force limiting value caused by common pretension bolt, its anti-loosing effect is more preferable, can prevent screw thread pair from relatively rotating.Reliability, practicability are good, can be used in severe impact, vibration, alternating load or the big occasion of temperature change, effectively reduce maintenance, maintenance to thread connection, improve safety, the utilization rate of equipment utilization.

Description

A kind of pairs of anti-loose nut spiral shell with elastic bumps nut and rotary table hex nut composition Bolt group
Technical field
The utility model belongs to mechanical engineering threaded connection locking field, be related to one kind can make full use of friction it is locking, It prevents thread connection from loosening, improves connection effect, reduce a kind of band elastic bumps nut and circle of the maintenance of thread connection, maintenance The pairs of anti-loose nut bolt group of platform hex nut composition.
Background technique
Various machines and component be unable to do without connector in being linked and packed.The quantity of connector accounts about machine components sum The 60% of amount, wherein thread connection is in mechanical attachment using the most common form, has that structure is simple, connection is reliable, assembly and disassembly The advantages that facilitating brings conveniently to mechanical industry.But it has an inevitable weakness, severe impact, vibration or Under varying load effect, or when temperature change is big, thread connection is possible to loosen or even completely disengaged.In real life because The product failure generated, machine failure, disintegration are loosened for thread connection, or even causes the example of fatal crass commonplace.Cause How this guarantees the reliability of thread connection, prevents thread connection from loosening, and is that product quality is effectively ensured, and improves product reliability Importance, locking thread problem has become the actual techniques problem of urgent need to resolve.
To solve the problems, such as loosening for connector, since thread connector be born, in the world the scientist of many countries with Engineer has made a large amount of test and research.
There are many locking method, and by the difference of working principle, anti-loose method is divided into friction is locking, machinery is locking etc..Furthermore There are also some special anti-loose methods, for example, between screw thread rivet welding, punching point is locking, coating adhesive is locking etc. screw thread pair.
Rubbing locking is a kind of most widely used locking mode, and this mode generates one between screw thread pair and do not become with external force The normal pressure of change, to generate the frictional force that screw thread pair can be prevented to relatively rotate.This normal pressure can be by axial or simultaneously two It is realized to collet threaded pair.Such as use elastic washer, double nut, self-locking nut and nylon anti-loose nut.It is this anti- Loose measure formula is more convenient for the disassembly of nut, but the shock and vibration and varying load the case where, and bolt can be led because of relaxation at the beginning Pretightning force decline is caused, with the increase of vibration number, pretightning force is gradually reduced, and nut will eventually be caused to loosen, thread connection Failure.
The second way is mechanical locking.It is the relative rotation that appliance directly limits screw thread pair.Such as using split pin, series winding Steel wire and washer etc..This mode causes disassembly inconvenient.
Summary of the invention
The locking root problem of bolt-connection is to prevent the relative rotation of screw thread pair.Rubbing locking will prevent screw thread pair It relatively rotates, just must try to increase the pressure and frictional force between screw thread pair, or increase rubbing action point simultaneously, increase additional Frictional force, improve total frictional force limiting value, can just prevent screw thread pair from relatively rotating.
After material is certain, coefficient of friction can not just change again, only raising screw thread pair between interaction force or Increase rubbing action point quantity.
After threaded pre-tightening, usually only by the effect of single axial pre tightening force, pretightning force is usually material yield strength σ s 50~70%, it is maximum no more than 80%, limit by improving pretightning force and improve the frictional force between screw thread pair.If I As soon as can laterally add external force, the resultant force of the lateral external forces and axial pre tightening force is much larger than single axial pretightening Power, the pressure and frictional force between the screw thread pair of formation are also just bigger, so that it may prevent screw thread pair from relatively rotating.
The utility model is exactly to make screw thread using a kind of double nut with elastic bumps nut and rotary table hex nut composition It when preload, is not only acted on, while the effect also by a lateral external forces, is formed between screw thread pair by normal axial pre tightening force Bigger pressure and frictional force.An additional rubbing action point is also added simultaneously, increases additional frictional force, improves total Frictional force limiting value, prevents screw thread pair from relatively rotating.
The utility model solves technical solution used by its technical problem:
A kind of pairs of anti-loose nut bolt group with elastic bumps nut and rotary table hex nut composition, it is characterized in that: including Band elastic bumps nut, rotary table hex nut, bolt;The elastic bumps with elastic bumps nut are in arc-shaped, semicolumn Shape is cylindric, is made of elastic material, uprightly, vertical with nut end face on an end face of nut;The rotary table Hex nut is made of round estrade and two part of regular hexagon cylinder, and the outsole of rotary table connects regular hexagon cylinder, rotary table it is small Bottom is an end face of nut, and the side of rotary table dissipates inclination outward;Frustum cone height is greater than elastic bumps height, elastic bumps position Setting in the axis projection region of frustum cone side.
A kind of operating method of the pairs of anti-loose nut bolt group with elastic bumps nut and rotary table hex nut composition, it is special Sign is: in use, rotary table hex nut is screwed in screw rod, making hexagon end face and work mounting s face contact, rotary table end face is directed toward The nut screw terminal of shank of bolt pre-tightens work connection;Again by the rotary table of the elastic bumps of raised nut and rotary table hex nut End is opposite to be screwed in, and until raised nut screws rotary table hex nut, stops screwing until reaching regulation maximum pretightning force.
The utility model has the beneficial effects that utilizing the upstanding elastomeric protrusion of raised nut and the rotary table of rotary table hex nut Side interaction other than axial pre tightening force, increases a radial forces more, forms screw thread when screw thread pair is pre-tightened Bigger pressure and frictional force between pair.Simultaneously also as elastic bumps and wedge shaped side interact, and increases one and add Rubbing action point, increase additional pressure and frictional force, improve total frictional force limiting value, total frictional force limiting value is long-range The frictional force limiting value caused by common pretension bolt, anti-loosing effect is more preferable, can prevent screw thread pair from relatively rotating.Reliably Property, practicability it is good, severe impact, vibration, alternating load or the big occasion of temperature change can be used in, effectively reduced to screw thread Maintenance, the maintenance of connection, improve safety, the utilization rate of equipment utilization.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the connection assembly axial cross-sectional views of the utility model.
Fig. 2 is rotary table hex nut axial section.
Fig. 3 is rotary table hex nut rotary table end elevation view.
Fig. 4 is elastic bumps nut axial section.
Fig. 5 is elastic bumps nut protrusion end elevation view.
Fig. 6 be frustum cone side be corrugated when rotary table end elevation view.
In figure: 1. rotary table hex nut, 2. rotary table 3. is with elastic bumps nut
4. raised 6. washers of 5. upstanding elastomeric of bolt
7. the coupled 2. 9. ripple cambered surface of workpiece of coupled workpiece 1 8..
Specific embodiment
In Fig. 1 embodiment, a kind of pairs of anti-loose nut of band elastic bumps nut (3) and rotary table hex nut (1) composition Bolt group, including rotary table hex nut (1), band elastic bumps nut (3), bolt (4).The band elastic bumps nut (3) Upstanding elastomeric protrusion (5) is arc-shaped, is made of elastic material, is located on an end face of raised nut (3), uprightly, and convex It is vertical to play nut (3) end face.The rotary table hex nut (1) is partly made of round estrade (2) and regular hexagon cylinder two, rotary table (2) outsole connects regular hexagon cylinder, and the handle of rotary table (2) is an end face of nut, and the side of rotary table (2) dissipates outward Inclination;Rotary table (2) is highly greater than elastic bumps (5) height, and elastic bumps (5) position is located at the axis projection region of frustum cone side It is interior.
In use, rotary table hex nut (1) is screwed in screw rod (4), contact hexagon end face with work mounting s face (7), The nut screw terminal of shank of bolt (4) is directed toward in rotary table end face, and workpiece (7,8) are coupled and are pre-tightened;It is again that the elasticity of raised nut (3) is convex Rise (5) it is opposite with the rotary table end of rotary table hex nut (1), screw-in screw rod (4).Raised nut (3) constantly rotates, elastic bumps (5) it gradually moves down, gradually contacts and interact with frustum cone side.Because the side of rotary table dissipates inclination, expansion circle outward Platform compresses upstanding elastomeric raised (5) generates flexible deformation and is inclined outwardly, and rotary table hexagonal is given in upstanding elastomeric protrusion (5) reaction (1) cross force of nut.Raised nut (3) is more toward backspin, and the flexible deformation of upstanding elastomeric protrusion (5) is bigger, upstanding elastomeric Raised (5) and the interaction force of rotary table hex nut (1) are also bigger.When raised nut (3) revolves rotary table hex nut (1) Tightly, when reaching regulation maximum pretightning force, it is maximum not only act upon the contact surfaces of two nuts, the axial force on screw thread pair, and The mutually transverse active force of two nuts is also maximum.Horizontal force suffered by raised nut (3) refers to the off-axis heart, rotary table hex nut (1) horizontal force suffered by is directed toward axle center.
Other than the axial pre tightening force suffered by the common pairs of anti-loose nut of screw thread pair at this time, and a more radial effect Power forms bigger pressure and frictional force between screw thread pair.Simultaneously also as elasticity interacts with wedge shaped side, and increase one A additional rubbing action point, increases additional frictional force, improves total frictional force limiting value, total frictional force limiting value is long-range The frictional force limiting value caused by common double nut, anti-loosing effect are also just more preferable, so that it may prevent screw thread pair from relatively rotating.
The side of rotary table hex nut (1) can be made a series of corrugated shape being made of continuous cambered surfaces, advantageous protrusion Nut (3), which screws rear upstanding elastomeric protrusion (5) are chimeric with ripple cambered surface (9), to be engaged.It is chimeric to be engaged effect and adjacent circular arc concave surface Raised edge rib have very strong mechanical inhibition to the sliding of upstanding elastomeric raised (5), more locked screw thread pair, avoided spiral shell Line pair relatively rotates.

Claims (1)

1. a kind of pairs of anti-loose nut bolt group with elastic bumps nut and rotary table hex nut composition, it is characterized in that: including band Elastic bumps nut, rotary table hex nut, bolt;The elastic bumps with elastic bumps nut are in arc-shaped, semi-cylindrical Or it is cylindric, it is made of elastic material, it is uprightly, vertical with nut end face on an end face of nut;The rotary table six Angle nut is made of round estrade and two part of regular hexagon cylinder, and the outsole of rotary table connects regular hexagon cylinder, the handle of rotary table For an end face of nut, the side of rotary table dissipates inclination outward;Frustum cone height is greater than elastic bumps height, elastic bumps position In the axis projection region of frustum cone side.
CN201821913426.6U 2018-11-20 2018-11-20 A kind of pairs of anti-loose nut bolt group with elastic bumps nut and rotary table hex nut composition Expired - Fee Related CN209278317U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821913426.6U CN209278317U (en) 2018-11-20 2018-11-20 A kind of pairs of anti-loose nut bolt group with elastic bumps nut and rotary table hex nut composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821913426.6U CN209278317U (en) 2018-11-20 2018-11-20 A kind of pairs of anti-loose nut bolt group with elastic bumps nut and rotary table hex nut composition

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CN209278317U true CN209278317U (en) 2019-08-20

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CN201821913426.6U Expired - Fee Related CN209278317U (en) 2018-11-20 2018-11-20 A kind of pairs of anti-loose nut bolt group with elastic bumps nut and rotary table hex nut composition

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109185322A (en) * 2018-11-20 2019-01-11 韦志锋 A kind of pairs of anti-loose nut bolt group and its operating method with elastic bumps nut and rotary table hex nut composition
CN114838048A (en) * 2021-01-30 2022-08-02 株式会社贵匠技研 Combined nut with anti-loosening function

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109185322A (en) * 2018-11-20 2019-01-11 韦志锋 A kind of pairs of anti-loose nut bolt group and its operating method with elastic bumps nut and rotary table hex nut composition
CN114838048A (en) * 2021-01-30 2022-08-02 株式会社贵匠技研 Combined nut with anti-loosening function
CN114838048B (en) * 2021-01-30 2024-02-13 株式会社贵匠技研 Combined nut with anti-loosening function

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TR01 Transfer of patent right

Effective date of registration: 20190812

Address after: 401313 No. 20 East Road, University Town, Shapingba District, Chongqing

Patentee after: Chongqing University of Science & Technology

Address before: 400042 No. 1 Petroleum Road, Yuzhong District, Chongqing

Patentee before: Wei Zhifeng

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190820

Termination date: 20201120