CN213511615U - Constant-force self-tightening anti-loose bolt - Google Patents
Constant-force self-tightening anti-loose bolt Download PDFInfo
- Publication number
- CN213511615U CN213511615U CN202022579247.7U CN202022579247U CN213511615U CN 213511615 U CN213511615 U CN 213511615U CN 202022579247 U CN202022579247 U CN 202022579247U CN 213511615 U CN213511615 U CN 213511615U
- Authority
- CN
- China
- Prior art keywords
- bolt
- rod
- hole
- constant
- taper sleeve
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- KJLPSBMDOIVXSN-UHFFFAOYSA-N 4-[4-[2-[4-(3,4-dicarboxyphenoxy)phenyl]propan-2-yl]phenoxy]phthalic acid Chemical compound C=1C=C(OC=2C=C(C(C(O)=O)=CC=2)C(O)=O)C=CC=1C(C)(C)C(C=C1)=CC=C1OC1=CC=C(C(O)=O)C(C(O)=O)=C1 KJLPSBMDOIVXSN-UHFFFAOYSA-N 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- -1 Hard Lock locknuts Chemical compound 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Landscapes
- Connection Of Plates (AREA)
Abstract
本实用新型公开了一种恒力自紧防松螺栓，包括固定座、封闭组件、锥度螺栓和弧面顶杆；所述固定座和封闭组件固定连接，所述固定座内部设有螺纹通孔，所述封闭组件设有与螺纹通孔相连通的内孔；所述锥度螺栓包括依次固定相连的螺栓头、螺栓杆和内锥套，所述锥度螺栓贯穿所述螺纹通孔，且内锥套一端伸入所述内孔中；所述弧面顶杆包括固定连接的圆柱杆和弧面杆，所述弧面杆的外表面为弧形面，所述弧面顶杆设于所述内孔中，且弧面杆一端卡于所述内锥套中。本实用新型提供的恒力自紧防松螺栓，固定座和锥度螺栓之间的锁紧力大，防松效果好，使用后不需频繁维护。
The utility model discloses a constant-force self-tightening anti-loosening bolt, which comprises a fixed seat, a closing component, a taper bolt and an arc-surface ejector rod; the fixed seat and the closing component are fixedly connected, and a threaded through hole is arranged inside the fixed seat , the closing assembly is provided with an inner hole that communicates with the threaded through hole; the taper bolt includes a bolt head, a bolt shank and an inner taper sleeve that are fixedly connected in sequence, the taper bolt penetrates the threaded through hole, and the inner taper One end of the sleeve protrudes into the inner hole; the cambered ejector rod includes a fixedly connected cylindrical rod and an cambered bar, the outer surface of the cambered bar is an arcuate surface, and the cambered ejector rod is arranged on the in the inner hole, and one end of the arc rod is clamped in the inner cone sleeve. The constant-force self-tightening anti-loosening bolt provided by the utility model has a large locking force between the fixing seat and the taper bolt, has a good anti-loosening effect, and does not require frequent maintenance after use.
Description
Technical Field
The utility model belongs to the technical field of the bolt, concretely relates to constant force self-tightening check bolt.
Background
The screw connection has been widely used in the industries of automobiles, machine tools, aerospace, railways and the like because of the advantages of compact structure, easy assembly and disassembly, large connecting force, reusability and the like. The traditional threaded connection meets the self-locking condition under the conditions of static load action and small temperature change, the unscrewing torque between threads is smaller than the self-locking torque, the connection system is in a balanced state, effective locking can be realized, and generally, an additional anti-loosening method is not required to be introduced to prevent loosening. However, when the structure is subjected to impact and vibration, particularly to dynamic load in a transverse circulation mode, the pretightening force of the threaded connection is easy to gradually reduce, and finally, the problems of connection failure in the modes of loosening, disengaging, dropping and the like are caused. In safety and critical applications, such failures can be catastrophic.
The looseness prevention of the threads is a worldwide problem, and accidents caused by the looseness of the threads are frequent. Although thousands of anti-loosening structures and patents appear, under the severe environment of large vibration, large temperature difference and large deformation, how to eliminate the dynamic clearance caused by thermal deformation, plastic deformation and structural deformation and keep the basically constant pretightening force is not an ideal solution at present.
At present, high-performance anti-loosening technologies are monopolized by Hadlock of Japan, Shibija in the United states, Sweden Lodija and the like, but the anti-loosening technologies cannot avoid the adverse effect of dynamic gaps on the performance, have low reliability in severe environment and cause the limitation of application occasions. In general, the durability of a mechanical structure is proportional to the number of bolted connections, and with the development of modern manufacturing industry, the problem of avoiding loosening of a threaded connection structure during operation has become one of the core problems of the design of the threaded connection structure at present. Therefore, it is critical to design and use a secure and reliable threaded coupling anti-loosening method. Although there are many methods for preventing loosening of threaded fasteners, there are four general methods: the first is friction anti-loosening, which mainly depends on increasing friction force; the second is mechanical anti-loosening, which is to use a pin, a gasket and a steel wire to clamp a bolt; the third is rivet punching anti-loosing, mainly to rivet and weld the thread pair; the fourth is structural lockdown, such as Hard Lock locknuts, schoppel locknuts in the united states, leidi louse lockdown washers in sweden, down's thread lockdown, ST2 type thread lockdown, SLB thread lockdown, and the like.
The first type of friction locking is the most widely used locking method, which generates a positive pressure between the thread pairs that is not changed by an external force, thereby obtaining a friction force that can prevent the thread pairs from rotating relative to each other. This friction can be achieved by axial or simultaneous two-way compression of the thread pairs. Such as an elastic washer, a double bolt, a self-locking bolt, a nylon insert locking bolt and the like. The anti-loosening mode is convenient for disassembling the bolt, but under the conditions of impact, vibration and variable load, the bolt can be loosened to cause the reduction of pretightening force, the lost pretightening force is slowly increased along with the increase of the vibration times, the bolt can be loosened and the thread coupling can be failed finally, and the increase of the friction force by increasing the positive pressure between the thread pairs is limited.
The second way is to use a stop to directly limit the relative rotation of the thread pairs. Such as the use of cotter pins, tandem wires, and stop washers. This kind of mode causes to dismantle inconvenient, and its locking mode does not have the pretightning force moreover, and when the screw thread pair pine moved back to locking position, locking mode could take place the effect promptly. Thus, this approach is not anti-loosening in nature, but rather anti-drop.
The third mode is riveting and anti-loosening, which adopts the methods of punching, welding, bonding and the like after screwing, so that the screw pair loses the characteristics of the kinematic pair and is connected into non-detachable connection. The disadvantage of this method is that the bolt can only be used once and is difficult to remove, and the thread pair must be destroyed to remove. The application range is very limited.
The most classical anti-loose structure in the fourth structure is a Japanese Hard Lock anti-loose nut, which is improved by combining the anti-loose principle of a double nut and a convex-concave nut. The upper nut is a concave nut, the lower nut is a convex nut, the center slightly shifts during processing, eccentric processing is achieved, the effect of driving a wedge into a gap is achieved, loosening of threads is prevented, different corresponding eccentric amounts exist for different sizes and materials, manufacturing and production are troublesome, and efficiency is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome not enough among the prior art, provide a constant force self-tightening check bolt, locking force between fixing base and the tapering bolt is big, and locking effect is good, does not need frequent maintenance after the use.
The utility model provides a following technical scheme:
a constant-force self-tightening anti-loose bolt comprises a fixed seat, a sealing component, a taper bolt and a cambered surface ejector rod;
the fixed seat is fixedly connected with the sealing component, a threaded through hole is formed in the fixed seat, and an inner hole communicated with the threaded through hole is formed in the sealing component;
the taper bolt comprises a bolt head, a bolt rod and an inner taper sleeve which are fixedly connected in sequence, the taper bolt penetrates through the threaded through hole, and one end of the inner taper sleeve extends into the inner hole;
the cambered surface ejector rod comprises a cylindrical rod and a cambered surface rod which are fixedly connected, the outer surface of the cambered surface rod is an arc surface, the cambered surface ejector rod is arranged in the inner hole, and one end of the cambered surface rod is clamped in the inner taper sleeve.
Preferably, the outer surfaces of the bolt rod and the inner taper sleeve are provided with external threads, and the threaded through hole of the fixing seat is provided with an internal thread matched with the external threads.
Preferably, the device further comprises a push rod disc spring, wherein the push rod disc spring is arranged in an inner hole of the closed assembly and is in contact with the cylindrical rod of the cambered surface push rod.
Preferably, the fastening device further comprises a bolt rod belleville spring which is installed between a bolt head of the bolt rod and a fastening object.
Preferably, the surface of the inner taper sleeve is a conical surface, and a plurality of through grooves extending along the axial direction of the inner taper sleeve are formed in the inner taper sleeve.
Preferably, the cone angle of the inner taper sleeve is 1-20 degrees, and the through grooves are uniformly distributed along the circumferential direction of the inner taper sleeve.
Preferably, the diameter of the cross section circle of the cylindrical rod is larger than that of the cross section circle of the arc rod, and the end face, close to the arc rod, of the cylindrical rod is parallel to the outer end face of the inner taper sleeve and is provided with a gap.
Preferably, the closing component comprises a ejector rod seat and a rear cover plate which are fixedly connected, and the inner hole is formed in the ejector rod seat.
Preferably, the rear cover plate is provided with outer bolt holes, and the ejector rod seat and the fixed seat are respectively provided with inner bolt holes corresponding to the outer bolt holes, so that the rear cover plate, the ejector rod seat and the fixed seat are in bolted connection.
Preferably, the rear cover plate is fixedly connected with the ejector rod seat and the ejector rod seat is fixedly connected with the fixed seat in a welding mode.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model provides a constant force self-tightening check bolt, fixing base and closed component fixed connection, the fixing base is inside to be equipped with the screw thread through-hole, the closed component is equipped with the hole that is linked together with the screw thread through-hole, the tapering bolt is including the bolt head, shank of bolt and the interior taper sleeve that fix in proper order and link to each other, the tapering bolt runs through the screw thread through-hole, and interior taper sleeve one end stretches into in the hole, the afterbody of tapering bolt is the cantilever beam structure, warp and form back-off structure and prevent the screw motion, prevent that the tapering bolt from becoming flexible, do not need frequent;
(2) the utility model discloses a cambered surface ejector pin includes fixed connection's cylinder pole and cambered surface pole, and the surface of cambered surface pole is the arcwall face, and in the hole was located to the cambered surface ejector pin, and cambered surface pole one end card in interior taper sleeve, during the installation, the tapering bolt is rotatory, and the cambered surface pole can give interior taper sleeve reaction force, and this reaction force can be decomposed into axial force and radial force, and this radial force is a plurality of times of axial force to prevent that the tapering bolt from sliding and not hard up, need not frequently maintain after the use.
Drawings
FIG. 1 is a schematic view of the overall structure of a constant force self-tightening check bolt;
FIG. 2 is a schematic sectional view of the constant force self-tightening check bolt;
FIG. 3 is a schematic structural view of a taper bolt;
fig. 4 is a sectional structural view of a fastening object and a fixing base;
FIG. 5 is a schematic cross-sectional view of the cambered surface mandril;
FIG. 6 is a schematic view of the construction of the ejector pin holder;
FIG. 7 is a schematic structural view of a rear cover plate;
labeled as: 1. a tapered bolt; 1-1, bolt head; 1-2, bolt bar; 1-3, inner taper sleeve; 1-4, through grooves; 2. fastening an object; 2-1, through holes; 3. a fixed seat; 3-1, a threaded through hole; 4. a cambered surface ejector rod; 4-1, a cambered surface rod; 4-2, cylindrical rod; 4-3, arc surface; 5. a jack rod seat; 5-1, inner hole; 5-2, inner bolt holes; 6. a rear cover plate; 6-1, external bolt holes; 7. a push rod disc spring; 8. the bolt rod is a belleville spring.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
It should be noted that, in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc. indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention but do not require the present invention to be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-5, a constant force self-tightening anti-loose bolt comprises a fixed seat 3, a sealing component, a taper bolt 1 and a cambered surface mandril 4; the fixed seat 3 is fixedly connected with the sealing component, a threaded through hole 3-1 is formed in the fixed seat 3, and an inner hole 5-1 communicated with the threaded through hole 3-1 is formed in the sealing component; the taper bolt 1 comprises a bolt head 1-1, a bolt rod 1-2 and an inner taper sleeve 1-3 which are sequentially and fixedly connected, the taper bolt 1 penetrates through a thread through hole 3-1, one end of the inner taper sleeve 1-3 extends into an inner hole 5-1, so that the tail of the taper bolt 1 forms a cantilever beam structure and is easy to deform, outer surfaces of the bolt rod 1-2 and the inner taper sleeve 1-3 are respectively provided with an external thread, and the thread through hole 3-1 of the fixed seat 3 is provided with an internal thread matched with the external thread; the cambered surface ejector rod 4 comprises a cylindrical rod 4-2 and a cambered surface rod 4-1 which are fixedly connected, the outer surface of the cambered surface rod 4-1 is a cambered surface 4-3, the cambered surface ejector rod 4 is arranged in the inner hole 5-1, and one end of the cambered surface rod 4-1 is clamped in the inner taper sleeve 1-3.
As shown in fig. 2, the constant-force self-tightening anti-loose bolt provided by this embodiment further includes a push rod disk spring 7, and the push rod disk spring 7 is disposed in the inner hole 5-1 of the sealing component and is in contact with the cylindrical rod 4-2 of the arc-surface push rod 4.
As shown in fig. 1-2, the constant-force self-tightening anti-loose bolt provided in this embodiment further includes a bolt bar belleville spring 8, the bolt bar belleville spring 8 is installed between the bolt head 1-1 of the bolt bar and the fastening object 2, and the bolt bar belleville spring 8 can compensate a dynamic gap generated by various deformations (thermal deformation, structural deformation, and the like) in the use process, so as to keep the thread pre-tightening force substantially constant. The fastening object 2 is provided with a through hole 2-1, and the diameter of the through hole 2-1 is larger than that of the bolt rod 1-2.
As shown in the figures 2-3, the surface of the inner taper sleeve 1-3 is a conical surface, and a plurality of through grooves 1-4 extending along the axial direction of the inner taper sleeve are arranged on the inner taper sleeve 1-3. The cone angle of the inner taper sleeve 1-3 is 1-20 degrees. The through grooves 1-4 are uniformly distributed along the circumferential direction of the inner taper sleeve 1-3. The through grooves 1-4 enable the inner taper sleeves 1-4 to uniformly deform along the radial direction within a certain range, so that gaps between external threads on the bolt rods 1-2 and internal threads of the fixed seat 3 are eliminated, and the attaching area and the locking friction force are increased.
As shown in FIGS. 2 and 5, the diameter of the cross-section circle of the cylindrical rod 4-2 is larger than that of the cross-section circle of the arc rod 4-1, and the end surface of the cylindrical rod 4-2 close to the arc rod 4-1 is parallel to and spaced from the outer end surface of the inner taper sleeve 1-3.
As shown in fig. 1-2 and 6-7, the sealing assembly comprises a top rod seat 5 and a rear cover plate 6 which are fixedly connected, and an inner hole 5-1 is formed in the top rod seat 5. The rear cover plate 6 is provided with an outer bolt hole 6-1, and the ejector rod seat 5 and the fixed seat 3 are respectively provided with an inner bolt hole 5-2 corresponding to the outer bolt hole 6-1, so that the rear cover plate 6, the ejector rod seat 5 and the fixed seat 3 are in bolt connection. In addition, the rear cover plate 6 and the ejector rod seat 5, and the ejector rod seat 5 and the fixed seat 3 can also be fixedly connected in a welding mode.
As shown in figure 2, the diameter of the cross section circle of the cylindrical rod 4-2 is smaller than that of the inner hole 5-1 of the ejector rod seat 5, so that the cylindrical rod 4-2 can float in the radial direction, and the influence of errors is eliminated.
As shown in fig. 1-5, during installation, after a bolt rod 1-2 of a taper bolt 1 sequentially passes through a bolt rod belleville spring 8 and a through hole 2-1 of a fastening object 2, the bolt head 1-1 is rotated to enable threads on the bolt rod 1-2 to be matched with internal threads of a fixing seat 3, the taper bolt 1 moves leftwards, the bolt head 1-1 is continuously rotated to enable an inner taper sleeve 1-4 to be in contact with an arc-shaped surface 4-3 of an arc-shaped rod 4-1, the arc-shaped ejector rod 4 overcomes the elasticity of an ejector rod belleville spring 7 while the taper bolt 1 compresses the bolt rod belleville spring 8, the arc-shaped ejector rod 4 is driven to move leftwards together, and locking torque applied during rotation needs to meet the standard requirement. At the moment, the inner taper sleeve 1-4 is subjected to the axial force given by the locking moment and the elasticity of the ejector rod disc spring 7, and is also subjected to the reaction force given by the arc-shaped surface 4-3 (the reaction force can be decomposed into the axial force and the radial force), the radial force is multiple times of the axial force, the tail part of the taper bolt 1 is of a cantilever beam structure, the deformation forms an inverted buckle structure to prevent the thread from moving rightwards, the loosening is prevented, meanwhile, the inner taper sleeve 1-3 deforms along the radial direction in a certain range in the installation process, the gap between the threads is eliminated, the outer thread of the taper bolt 1 is tightly attached to the inner thread of the fixing seat 3, the attaching area of the inner taper sleeve 1-3 and the fixing seat 3 is increased, the thread locking force is greatly increased. After the taper bolt 1 is installed, the anti-loosening effect is good.
As shown in fig. 1-5, the constant force self-tightening anti-loose bolt provided by the utility model, besides adopting the above-mentioned back-off structure to lock and loosen, also adopts the principle of expansion screw, combines the wedge force-increasing structure with the through groove 1-4 and the spring structure, and the axial pretightening force is unchanged and the radial pretightening force is multiplied. Different from other traditional structures, due to the existence of the through grooves 1-4, the front ends of the inner taper sleeves 1-3 are easy to generate overall deformation under the action of radial pretightening force, and simultaneously, the internal threads on the fixed seat 3 are matched with the external threads on the taper bolt 1 (the thread shape and the thread pitch are completely consistent), so that the axial gap and the radial gap between the bolt and the nut are effectively eliminated, the actual contact area between the bolt and the nut is obviously increased, the reliability of thread locking is improved, overlarge local abrasion and damage between locking surfaces during disassembly can be avoided, and the locking force can be continuously used after more than 50 times of disassembly without obvious change; the spring structure can provide constant and lasting pretightening force, and the anti-loosening effect is better on occasions with large vibration and temperature change.
To Hard Lock locknut and the utility model provides a constant force self-tightening check bolt carries out the performance and detects, and test equipment adopts ann cloth internal medicine transverse vibration testing machine, and experimental frequency is 12.5Hz, and lubricated condition is machine oil, and the vibration number of times is 1500 times, and the result is as follows table 1, and number "/" left side digit is the initial axial force of convex nut or installation moment of torsion in the table, and the right side digit is the initial axial force of concave nut or installation moment of torsion.
TABLE 1Hard Lock locknut and constant force self-tightening lockbolt Performance test data
| Sample (I) | Hard Lock locknut | Constant force self-tightening anti-loose bolt |
| Initial axial force (kN) | 13.8/21.6 | 75.5 |
| 30 seconds axial force (kN) | 18.5 | 69.2 |
| 60 second axial force (kN) | 18.0 | 68.8 |
| 90 second axial force (kN) | 17.7 | 68.6 |
| 120 seconds axial force (kN) | 17.3 | 68.2 |
| Residual/initial (%) | 80.1 | 90.3 |
| Installation torque (N.m) | 42/59 | 252 |
The international common core anti-loosening indexes are as follows: residual/initial (%), i.e., residual pre-tightening force/initial pre-tightening force) (%), in practical applications, a residual/initial (%) of more than 80 is excellent, 80-50 is good, and a residual/initial (%) of more than 75 is generally required in cases with anti-loosening requirements. As can be seen from table 1, the utility model provides a constant force self-tightening check bolt's remaining/initial (%) is 90.3, far exceeds 80 outstanding standard, also is greater than Hard Lock locknut's 80.1.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (10)
1. A constant-force self-tightening anti-loose bolt is characterized by comprising a fixed seat, a closed component, a taper bolt and a cambered surface ejector rod;
the fixed seat is fixedly connected with the sealing component, a threaded through hole is formed in the fixed seat, and an inner hole communicated with the threaded through hole is formed in the sealing component;
the taper bolt comprises a bolt head, a bolt rod and an inner taper sleeve which are fixedly connected in sequence, the taper bolt penetrates through the threaded through hole, and one end of the inner taper sleeve extends into the inner hole;
the cambered surface ejector rod comprises a cylindrical rod and a cambered surface rod which are fixedly connected, the outer surface of the cambered surface rod is an arc surface, the cambered surface ejector rod is arranged in the inner hole, and one end of the cambered surface rod is clamped in the inner taper sleeve.
2. The constant-force self-tightening anti-loose bolt according to claim 1, wherein the outer surfaces of the bolt shank and the inner taper sleeve are provided with external threads, and the threaded through hole of the fixing seat is provided with internal threads matched with the external threads.
3. The constant-force self-tightening anti-loose bolt according to claim 1, further comprising a push rod disc spring, wherein the push rod disc spring is arranged in the inner hole of the closing component and is in contact with the cylindrical rod of the cambered surface push rod.
4. The constant-force self-tightening anti-loose bolt according to claim 1, further comprising a bolt shank belleville spring installed between a bolt head of the bolt shank and a fastening object.
5. The constant-force self-tightening anti-loose bolt according to claim 1, wherein the surface of the inner taper sleeve is a tapered surface, and the inner taper sleeve is provided with a plurality of through grooves extending along the axial direction of the inner taper sleeve.
6. The constant-force self-tightening anti-loose bolt according to claim 5, wherein the taper angle of the inner taper sleeve is 1-20 degrees, and the through grooves are uniformly distributed along the circumferential direction of the inner taper sleeve.
7. The constant force self-tightening anti-loose bolt according to claim 1, wherein the cylindrical rod has a cross-sectional circular diameter larger than that of the arc rod, and an end surface of the cylindrical rod adjacent to the arc rod is parallel to and spaced from the outer end surface of the inner taper sleeve.
8. The constant force, self-tightening check bolt of claim 1, wherein the closure assembly comprises a fixedly connected ejector pin base and a back cover plate, the inner bore being disposed within the ejector pin base.
9. The constant-force self-tightening anti-loose bolt according to claim 8, wherein the rear cover plate is provided with an outer bolt hole, and the ejector rod seat and the fixed seat are provided with an inner bolt hole corresponding to the outer bolt hole, so that the rear cover plate, the ejector rod seat and the fixed seat are bolted.
10. The constant-force self-tightening anti-loose bolt according to claim 8, wherein the rear cover plate and the ejector rod seat, and the ejector rod seat and the fixed seat are fixedly connected by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022579247.7U CN213511615U (en) | 2020-11-10 | 2020-11-10 | Constant-force self-tightening anti-loose bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022579247.7U CN213511615U (en) | 2020-11-10 | 2020-11-10 | Constant-force self-tightening anti-loose bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213511615U true CN213511615U (en) | 2021-06-22 |
Family
ID=76423745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022579247.7U Active CN213511615U (en) | 2020-11-10 | 2020-11-10 | Constant-force self-tightening anti-loose bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213511615U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160964A (en) * | 2020-11-10 | 2021-01-01 | 扬州工业职业技术学院 | Constant-force self-tightening anti-loose bolt |
| CN112160964B (en) * | 2020-11-10 | 2025-02-25 | 扬州工业职业技术学院 | A constant force self-tightening anti-loosening bolt |
-
2020
- 2020-11-10 CN CN202022579247.7U patent/CN213511615U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160964A (en) * | 2020-11-10 | 2021-01-01 | 扬州工业职业技术学院 | Constant-force self-tightening anti-loose bolt |
| CN112160964B (en) * | 2020-11-10 | 2025-02-25 | 扬州工业职业技术学院 | A constant force self-tightening anti-loosening bolt |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111173830A (en) | Composite locknut | |
| JP5204856B2 (en) | Improved nuts and bolts | |
| CN110552946B (en) | An anti-loose and back-stop bolt assembly with a single nut | |
| CN110671414B (en) | Self-locking bolt mechanism and use method thereof | |
| CN2200720Y (en) | Double-locking anti-loose combined nut | |
| CN211820332U (en) | Composite locknut | |
| CN111306173B (en) | Collet chuck structure type locknut | |
| CN112268055A (en) | Anti-loosening fastening nut gasket assembly | |
| CN213511615U (en) | Constant-force self-tightening anti-loose bolt | |
| CN112160964B (en) | A constant force self-tightening anti-loosening bolt | |
| CN112160964A (en) | Constant-force self-tightening anti-loose bolt | |
| CN101776117A (en) | Anti-loosening method for connection between round nut and bolt | |
| CN214661426U (en) | Check bolt group with internal thread regular polygon gasket | |
| CN111577742A (en) | A never-loose self-tightening bolt washer nut system | |
| CN214007745U (en) | Self-tightening anti-loose fastening device | |
| CN110821938A (en) | Anti-loosening fastening bolt | |
| CN211951127U (en) | Anti-loosening bolt with sawtooth structure | |
| CN209245035U (en) | A kind of anti-loosening bolt assembly | |
| CN101975213A (en) | Anti-loose method of nut | |
| CN112727896A (en) | Elastic self-locking nut | |
| CN113757243A (en) | Variable-shaft type locknut | |
| CN106763049A (en) | Push away swollen drawing type flexible fastening connector | |
| CN112268054A (en) | Anti-loosening fastening nut gasket suite | |
| CN221144987U (en) | Dual anti-loosening lock shaft structure | |
| CN112128209A (en) | Upper Locking Elastic Cone Lock Nuts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |