CN203560260U - Threaded extrusion anti-loosing fastening connection system - Google Patents
Threaded extrusion anti-loosing fastening connection system Download PDFInfo
- Publication number
- CN203560260U CN203560260U CN201320377768.1U CN201320377768U CN203560260U CN 203560260 U CN203560260 U CN 203560260U CN 201320377768 U CN201320377768 U CN 201320377768U CN 203560260 U CN203560260 U CN 203560260U
- Authority
- CN
- China
- Prior art keywords
- nut
- bolt
- nuts
- thread
- screw thread
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Connection Of Plates (AREA)
Abstract
Provided is a threaded extrusion anti-loosing fastening connection system. New design of thread profile and/or materials having hardness different from the designed harness are provided to facilitate the threaded extrusion deformation fastening during the connection of a nut and a bolt, and low screw-stopping torque can be obtained. A scheme combined with the three characteristics of the new design of the thread profile, the hardness configuration of the nut and the bolt, and the new size of the nut is also provided. In the system, the hardness of the nut is less than that of the bolt, the thread profile is thicker, and after the installation, the threads of the bolt can be embedded into the threads of the nut to be deadly clocked without any gap, thereby achieving the aim of anti-loosing. The profile of the threads is arc-shaped, and is lower and thicker, as well as is wider in bottom, so that the antifatigue strength and the service life are improved and the installation is fast. Because of the new size of the nut, the antifatigue strength is high and the service life is long. The performance is better than that of a common anti-loosing thread fastener. Only one torque wrench is needed for the installation, and the system provided combines the advantages of the deformation fastening effect of a cold-drawn rivet and the simplification of bolt connection, so that the system provided can be applied to railway, heavy-duty automobiles, ships, mine machinery, or electric power equipment etc. and particularly to the conditions having the interference of a riveting tool.
Description
(1) technical field: the utility model relates to a kind of member connected system, is mainly used in having certain fastening strength or vibration operating mode, space, connected plate both sides not too greatly or has the occasions such as interference.Belong to vehicle body fittings, parts class (B60R).
(2) background technique:
Existing being fastenedly connected in industry, if adopt conventional bolt standard piece, even if adopt the bolt of 10.9 grades of high strength grades, under special operation condition, due to a little less than resistance to shock, anti-loosening property is not enough, fatigue strength is not high etc., and problem also can cause often occurring Joint failure.
In recent years, in the connection of the key positions such as lorry, automobile and bridge, all adopt cold drawn riveted joint, and substituted rivet hot in the past and is connected with common nut, connection reliability obtains effectively assurance, and especially resistance to shock is better.But there are the following problems in cold drawn riveted joint (being fastenedly connected with pulling rivet): 1) Riveting Tool of cold drawn riveted joint is riveting machine, riveting machine is installed and dismounting complexity, comprises pumping plant, riveting gun etc., and installation cost is higher.2) riveting machine is generally placed on connected plate rear side, and drag rivet joint after the bar of crimping rivet rear end, thereby need to have certain activity space at connected plate rear side, and some particular surroundings factor, as under the factor impacts such as: interference problem, pumping plant operating conditions and transportation difficulty, has been difficult to installation now.
Chinese utility model patent discloses a kind of < < checknut fastening piece > > (ZL02220635 for 2002.3), it is to adopt the layer of resinizing between binding thread, and when nut bolt is tightened, resin layer is cracked, increases frictional force and reaches locking fastening object.This fastening degree of increasing friction force that only depends on is limited, can not compare with the fastening anti-loosing effect after cold drawn riveted joint distortion, can not substitute pulling rivet.
(3) summary of the invention:
The locking system that is fastenedly connected of screw thread that the utility model provides extruding, one of its object be exactly solve that existing conventional bolt connects that vibration resistance is weak, anti-loosening property is not enough, the fatigue strength Joint failure of high appearance not.Two of its object is exactly to solve existing pulling rivet fastener installation tool and dismounting is complicated, installation cost is high; And need connected plate to have a side space large, and the problem that existing some particular surroundings has been difficult to installation.
The technical solution adopted in the utility model is as follows:
The locking system that is fastenedly connected of screw thread extruding, comprises nuts and bolt; It is characterized in that: provide nut thread and bolt thread tooth form newly to design or/and design the discrepant nut of hardness and bolt product material, when being beneficial to nuts and bolt and connecting screw thread extrusion-deformation fastening, and obtain distortion when fastening only turn-knob square is low.Described herely be conducive to be out of shape the new design of fastening tooth form and generally refer to cases of otherwise standard design.
The locking system that is fastenedly connected of above-mentioned screw thread extruding must be elected following A as, B, one of tri-kinds of C: A nuts and bolt thread profile newly designs, the nut of soft or hard configuration and bolt material and nut new size three all have (seeing embodiment 1); Nut and the bolt material of the new design of B nuts and bolt thread profile and soft or hard configuration all have (seeing embodiment 2); The new design of C nuts and bolt thread profile and nut new size all have (seeing embodiment 3); The span that the nut that various nominal diameters, nuts and bolt thread profile newly design, soft or hard configures and bolt material, nut new size must be elected sequence number 1-5 in table 1 as.
Table 1 mm
In said system A or B, bolt material middle-carbon steel can be selected 35Cr; Nut material low carbon steel can select 08AL(to see embodiment 1-3).In said system A, the configuration of bolt material middle-carbon steel and nut material low carbon steel can be with providing nut product Vickers hardness≤160HV to substitute (seeing embodiment 4).
The utility model beneficial effect:
1) employing is conducive to be out of shape fastening tooth form newly design and material configuration, and the screw thread of nuts and bolt is pushed mutually, and nut thread deforms to realize and is fastenedly connected, and can obtain only turn-knob square lower while being rather tightly out of shape.After its connection, the anti-loose ability of antivibration and fatigue strength are far above the connection of existing conventional criteria part high strength grade 10.9 grade bolts.See Fig. 9, when moment of torsion M reaches the only turn-knob square of regulation, screw thread pushes, and nut thread 2A place is all out of shape, and bolt and nut forms seamless extruding and connects.2) bolt is selected hardness, material that intensity is higher, and nut is selected the material that hardness is lower; Design the thick t of nut thread simultaneously
2than bolt thread thickness t
1larger, in installation, tighten in process thus, when torsion reaches specified value, can there is extrusion-deformation in the screw thread of softer nut, now locked in the complete insert nut screw thread of screw thread texturing zone meeting gapless.Under vibration condition, can there is not relative movement and reach locking object in bolt, nut.See Figure 10, the nut 2N of existing routine and screw thread 1N tighten rear intermeshing, and distortion, does not have gap 3N between two screw threads.Under vibration condition, bolt, nut easily produce relative movement, cause becoming flexible.3) compare with conventional bolt, the high h1 of employing bolt thread tooth reduces, the thick t of tooth
1thicken, tooth bottom width b1 widens (in Table 2, see Fig. 9, Figure 10), makes that connected system lifting surface area increases, meeting with stresses reduces greatly, has improved the working life of fatigue strength and connected system, install to be more prone to, fast simultaneously.4) adopt nut wall thickness B2 and height H 2 all to have increase compared with same specification plain nut, nut field of load is increased, greatly improved connected system and born high loadability, to reach the object that improves join strength and fatigue behaviour.5) setting tool only needs a torque wrench, simple and convenient.6) the utility model can reach the fastening effect after the utilization distortion of existing pulling rivet, but solved setting tool that cold drawn riveted joint exists, takes up room greatly, dismantles complexity, problem that cost is high.The effect that tightens up of having assembled cold drawn rivet is connected simple advantage with bolt, to install and dismantle high-performance to be efficiently fastenedly connected system, can be widely used in the various connection occasions such as railway, heavy-load automobile, boats and ships, mining machinery, particularly be used in the occasion that the Riveting Tool in cold drawn riveted joint exists interference problem, upgrade kit transportation difficult problem etc. to be difficult to installation, alternative pulling rivet.7) test data: in the utility model embodiment 1, nominal diameter is that 16mm and the existing nut nut of same specification connected system Performance Ratio are in Table 2.
Table 2
By table 2 test data, can fully find out, the utility model adopts provides the new design such as tooth form and material, and the system that realizes screw thread distortion locking can improve the anti-loosening property being threaded greatly.
(4) accompanying drawing explanation:
The locking method step 1 that is fastenedly connected of Fig. 1 screw thread extruding) schematic diagram.
The locking method step 2 that is fastenedly connected of Fig. 2 screw thread extruding) schematic diagram.
The locking method step 3 that is fastenedly connected of Fig. 3 screw thread extruding) schematic diagram.
The locking method step 4 that is fastenedly connected of Fig. 4 screw thread extruding) schematic diagram.
Fig. 5 bolt single-piece outline drawing.
Fig. 6 Fig. 5 partial enlarged drawing I (bolt thread tooth form).
Fig. 7 nut single-piece sectional view (nut size).
Fig. 8 Fig. 7 partial enlarged drawing II (nut thread tooth form)
Under the condition of the only turn-knob square M3 of the material that Fig. 9 provides by embodiment 1, tooth form, nut size and correspondence, thread engagement deformation state figure between screw bolt and nut.
Thread engagement phase diagram between the existing conventional criteria part of Figure 10 screw bolt and nut.
(5) embodiment:
Embodiment 1:.
The nut thread that the present embodiment 1 provides and bolt thread tooth form newly design or/and design the discrepant nut of hardness and bolt product material, when being beneficial to nuts and bolt and connecting, screw thread extrusion-deformation is fastening, and obtains the only turn-knob square low scheme of distortion when fastening and be: screw thread extruding is locking is fastenedly connected that system A. nuts and bolt thread profile newly designs, the nut of soft or hard configuration and bolt material and nut new size three all have.
See Fig. 5, Fig. 6, Fig. 7, Fig. 8, the locking system that is fastenedly connected of the present embodiment 1 screw thread extruding, the thread profile of the nuts and bolt of employing newly designs, the configuration of the material soft or hard of nuts and bolt and nut new size value be as shown in sequence number 1-5 in table 3.
Table 3 mm
See Fig. 1--Fig. 4, the locking method that is fastenedly connected of the present embodiment 1 screw thread extruding has the following steps:
1) see Fig. 1, nut 1 is inserted to mounting hole 4.1 from two connected plate 4,3 front side A.2) see Fig. 2, nut 2 is spun on nut 1 from two connected plate rear side B.3) see Fig. 3, with torque wrench 5 by nut 2 spinning on rear connected plate 3 surfaces, and screw.4) see Fig. 4, continue to screw nut with torque wrench 5, watch the torque value M indicating on torque wrench to reach table 4 and end turn-knob square M
1numerical value, just stops screwing installation.Different only turn-knob square M in different size connected system
1numerical value as following table 4:
Table 4
See Fig. 9, adopt under the tooth form, material, nut size of the nominal diameter D=16mm that the present embodiment 1 provides and the condition of corresponding only turn-knob square M1=305N.m, screw thread pushes, bolt and nut forms seamless extruding connection, push thread forms when locked.In visible Fig. 9, indicate 2A place and be nut thread distortion place.From Fig. 9, it can also be seen that the thick t of nut thread tooth
2be greater than the thick t of bolt thread tooth
1.
The strongest (in Table the 2) fatigue strength of the locking property of the present embodiment 1, join strength, working life are all high, are the optimized schemes of the present invention.
Embodiment 2:
The locking system that is fastenedly connected of screw thread extruding that the present embodiment 2 provides is that nut and the bolt material that the new design of B. nuts and bolt thread profile and soft or hard configure all has.
The locking system that is fastenedly connected of screw thread extruding, the tooth form of the nuts and bolt of employing newly designs, the configuration of nuts and bolt material soft or hard is identical with embodiment 1, in Table 3, is no longer repeated in this description here.
The present embodiment 2 nut sizes adopt 10 grades of nut sizes of existing standard, visible GB.Here take nominal diameter D=16mm as example: nut wall thickness B2≤4mm, height of nut H2≤25mm(is in Table 2).
Screw thread extruding is locking be fastenedly connected method and acquisition only turn-knob square M2 numerical value is identical with embodiment 1, in Table 4, be no longer repeated in this description here.
The size of the present embodiment 2 existing 10 grade standard part nuts because nut size adopts, although fatigue strength and working life are lower a little than embodiment 1, still has better anti-loosening property.
Embodiment 3:
The locking system that is fastenedly connected of screw thread extruding that the present embodiment 3 provides is that the new design of C. nuts and bolt thread profile and nut new size all have.
The locking system that is fastenedly connected of screw thread extruding, the new design of tooth form of the nuts and bolt of employing is identical with embodiment 1 with nut new size, in Table 3, is no longer repeated in this description here.
The present embodiment 3 materials adopt existing standard part 10.9 grade bolt materials to join 10 grades of nut materials, visible GB.Existing standard part bolt is divided into 8.8 grades, 10.9 grades, 12.9 grades etc., and standard piece nut is divided into 8 grades, 10 grades etc.When selecting bolt and nut material, should make nut hardness be less than nut.The present embodiment 3 choosing be that 10.9 grade bolts are joined 10 grades of nuts.In actual applications, 10.9 grade bolts also can be joined 8 grades of nuts.
The locking method step that is fastenedly connected of the present embodiment 3 screw thread extruding is identical with embodiment 1, and the only turn-knob square M3 numerical value only obtaining is as numerical value in following table 5.
Table 5
The present embodiment 3 is because selecting the tooth form of optimization and the new design of nut size, and beneficial effect is: 1. have certain anti-loosening property.2. the large and long service life of fatigue resistance.3. install easily, fast.With embodiment 1 than deficiency: because of nut and nut material configuration, do not optimize, produce 1. anti-loosening property slightly a little less than.2. only turn-knob square M3 is larger, and operation easier is slightly large.But can select the fit quality of the existing standard part screw bolt and nut material more optimized to strengthen locking property and to reduce only turn-knob square M3.
Embodiment 4:
The locking system that is fastenedly connected of screw thread extruding that the present embodiment 4 provides is: nuts and bolt thread profile newly designs, nut after heat treatment makes steel material Vickers hardness≤160HV and nut new size three all has.
The locking system that is fastenedly connected of the present embodiment 4 screw thread extruding, the new design of tooth form of the nuts and bolt of employing is identical with embodiment 1 with nut new size, in Table 3, is no longer repeated in this description here.
The nut product adopting is after heat treatment to make steel material Vickers hardness≤160HV.
The present embodiment 4 screw threads extruding are locking, and to be fastenedly connected method step identical with embodiment 1, and only stopping turn-knob square M4 numerical value is numerical value in table 6.
Table 6
Claims (3)
1. the locking system that is fastenedly connected of screw thread extruding, comprises nuts and bolt; It is characterized in that:
Described connected system is following A, B, one of tri-kinds of C: A. nuts and bolt thread profile newly designs, the nut of soft or hard configuration and bolt material and nut new size three all have; B. nut and the bolt material of the new design of nuts and bolt thread profile and soft or hard configuration all have; C. the new design of nuts and bolt thread profile and nut new size all have; Corresponding various nominal diameters, the span that the nut that described nuts and bolt thread profile newly designs, soft or hard configures and bolt material, nut new size are elected respectively sequence number 1-5 in table 1 as;
Table 1 mm
2. by the locking system that is fastenedly connected of screw thread extruding described in claim 1; It is characterized in that: in described system A or B, bolt material middle-carbon steel is selected 35Cr; Nut material low carbon steel is selected 08AL.
3. by the locking system that is fastenedly connected of screw thread extruding described in claim 1; It is characterized in that: in described system A, the configuration of bolt material middle-carbon steel and nut material low carbon steel is with providing nut product Vickers hardness≤160HV to substitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320377768.1U CN203560260U (en) | 2013-06-28 | 2013-06-28 | Threaded extrusion anti-loosing fastening connection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320377768.1U CN203560260U (en) | 2013-06-28 | 2013-06-28 | Threaded extrusion anti-loosing fastening connection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203560260U true CN203560260U (en) | 2014-04-23 |
Family
ID=50509983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320377768.1U Expired - Lifetime CN203560260U (en) | 2013-06-28 | 2013-06-28 | Threaded extrusion anti-loosing fastening connection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203560260U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296622A (en) * | 2018-12-07 | 2019-02-01 | 江西洪都航空工业集团有限责任公司 | A kind of anti-loosening structure for thread connection under space constraint |
-
2013
- 2013-06-28 CN CN201320377768.1U patent/CN203560260U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296622A (en) * | 2018-12-07 | 2019-02-01 | 江西洪都航空工业集团有限责任公司 | A kind of anti-loosening structure for thread connection under space constraint |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2238361B1 (en) | Advanced nut and bolt | |
| EP3364049B1 (en) | Radiused lead-in for interference fit fasteners | |
| US20180238361A1 (en) | Tapered Lead-In for Interference Fit Fasteners | |
| EP3074647B1 (en) | Advanced nut and bolt | |
| CN102174941A (en) | Connection method and structure of steel plate riveting nylon self-locking nut | |
| CN102852952B (en) | Thread positioning locking mechanism and mounting method | |
| CN110714965A (en) | Hexagon socket head cap screw fastener | |
| CN203248492U (en) | Resin injection one-way bolt | |
| CN203560260U (en) | Threaded extrusion anti-loosing fastening connection system | |
| CN102927111A (en) | Locking structure of thread connecting pair | |
| CN103352909A (en) | Anti-loose and fastening connecting method and system through thread extrusion | |
| CN202926831U (en) | Locking structure of threaded connection pair | |
| CN209800516U (en) | Accurate moment control type locknut | |
| CN204061494U (en) | Shockproof locking Self-locking screw and shockproof loosening-preventing self-lock screw-thread fastener assembly | |
| CN202811774U (en) | Thread positioning lock structure | |
| CN202811768U (en) | Novel riveting nut | |
| CN202402444U (en) | Fastening lock bolt | |
| CN211820309U (en) | Anti-loosening bolt | |
| CN202883617U (en) | Minisize rotary pulling rivet | |
| CN202673957U (en) | Self-locking fastening structure and seal structure | |
| CN202937590U (en) | Multi-groove locking bolt | |
| CN202811767U (en) | Novel fastener | |
| CN117231617A (en) | Double-nut anti-loosening fastener and connecting method | |
| CN213598358U (en) | High-strength hexagon bolt | |
| CN219366548U (en) | Anti-loosening structure for bolt and nut |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 620032, No. two, 821, Science Park, Dongpo District, Sichuan, Meishan Patentee after: MEISHAN CRRC FASTENING SYSTEM Co.,Ltd. Address before: 620032, No. two, 821, Science Park, Dongpo District, Sichuan, Meishan Patentee before: MEI SHAN CSR FASTENER SCIENCE&TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140423 |
|
| CX01 | Expiry of patent term |