CN204437017U - A kind of bolt - Google Patents
A kind of bolt Download PDFInfo
- Publication number
- CN204437017U CN204437017U CN201420753327.1U CN201420753327U CN204437017U CN 204437017 U CN204437017 U CN 204437017U CN 201420753327 U CN201420753327 U CN 201420753327U CN 204437017 U CN204437017 U CN 204437017U
- Authority
- CN
- China
- Prior art keywords
- nut
- screw rod
- bolt
- hole
- stepped shaft
- 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 - Fee Related
Links
Landscapes
- Connection Of Plates (AREA)
Abstract
The bolt that the utility model proposes comprises stepped shaft screw rod and nut, the front threads direction that the rear threads that in screw thread on stepped shaft screw rod, cross-sectional diameter is large is little with cross-sectional diameter is contrary, this nut comprises the first nut be screwed in rear threads and the second nut be screwed in front threads, the axis of the first nut is provided with blind hole, the axis of the second nut is provided with and the through hole of blind hole on same straight line, and inserts the bounding means in through hole and blind hole.This bolt can by two nut drivings on stepped shaft screw rod, and two nuts are fixed, even if be subject to very large External Force Acting after making this kind of bolt be locked also can not make bolt looseness by recycling bounding means.
Description
Technical field
the utility model relates to a kind of bolt, especially relates to a kind of bolt being applied in the numerous areas such as Off-the-road tire and ready-mixed concrete equipment.
Background technique
in the prior art, bolt is made up of screw rod and nut usually, screw rod is wherein provided with outside thread, and on nut, be provided with the internal thread that to match with the outside thread on screw rod, although utilize this kind of bolt parts can be connected by being screwed in screw rod upper cap nut, but due to screw rod being only provided with unidirectional screw thread, even if screw multiple nut on screw rod, because all nuts are also rotate along identical direction, so, even if the bolt of said structure with multiple nut screwing clamping on screw rod, its the machinery of fixing constantly producing in the process of vibrations, bolt also can shake along with the vibration of machinery, bolt is in the easy autorotation of vibrational state lower nut, thus the superstructure loosening causing it to connect.Bolt looseness brings certain influence can to undoubtedly connected parts, thus causes mechanical precision to decline, and may cause inconceivable consequence time serious.Cause mechanical failure for avoiding bolt looseness or lead to major accident, in the prior art, usual adopted spring washer increases the coupling mechanism force of nut, loosen again after preventing nut check, but because spring washer has certain intensity and endurance degree and limit of elasticity, namely there is strain limit in elastic washer self, fatigue limit and limit of elasticity, when the periodic vibration of the system be fastened by bolts in high strength, the gap of the elastic compensating that the packing ring as elastic element utilizes it intrinsic and the generation of elimination periodicity and stress, when vibration frequency and intensity exceed its strain limit, its anti-loosing effect will lose efficacy, this periodic vibrations easily cause metal fatigue again, if maintenance discovers part not in time or not easily, still nut loosening may be fallen, so this kind of packing ring anti-loosing effect is undesirable, working life is also relatively short.
in the prior art, " locking glue " solves nut loosening problem also to adopt a kind of name to be called, namely on the surface of external thread of screw, first coats locking glue, and then screw on nut.Because locking glue is a kind of multicomponent high molecular polymer with high-strength high-elasticity, it has very lasting elasticity and mechanical strength, so, after it is by interior outer nut compression, produce powerful friction in the circumference of internal and external threads, this friction can produce a decline threshold values in whole bolt, when comprehensive external force fails to exceed this decline threshold values, bolt can keep original steady state, effectively can prevent nut loosening.But because locking glue has elasticity and mechanical strength, working resistance during screw on nut can be strengthened on the one hand, affect working efficiency, can raise the cost on the other hand.
the name that No. 201020674043, Chinese patent is authorized is called that " anti-loosening MACHINE SCREWS " provides a solution, this MACHINE SCREWS comprises cap head and the screw rod with the projection of cap first side institute, and outside thread is provided with on screw rod, and externally threaded multiple Luo Feng both sides are the asymmetric formula outside thread of shaping differing tilt angles, for the shaping difference in externally threaded multiple Luo Feng both sides large small angle, its meaning wants by the peak-to-peak angular slope of screw thread spiral shell to strengthen frictional force between nut and occlusal contact area to reach fastening object.Although multiple Luo Feng tilt angle that the outside thread of this kind of MACHINE SCREWS is arranged, screw can be avoided to loosen after locking, but because the screw thread on screw rod is made up of mechanical tapping, and utilizing in the process of mechanical tapping, tapping multiple Luo Feng tilt angle is quite difficult, makes its working process relative complex, manufacturing efficiency is also relatively low, topmost problem is, if when this kind of MACHINE SCREWS bears relatively large external force, screw also can loosen.
the name of Chinese patent No. 2011200314890 notice of authorization is called that the jam nut proposed in " Shockproof anti-loosening screw " comprises one and has bolt slot, a directed nut and an embolus, after being threaded to bolt slot to fastening position or position location by directed nut, again embolus body is inserted the groove of described bolt slot, stretch in the bolt mother of directed nut, and closely withstand the screw thread of nut, to complete location and antivibration locking functions.Although this patent can by embolus by nut location to play the locking effect of antivibration, move along bolt slot because embolus is also easy under external force, and embolus to move and directly can cause nut loosening, and working process also relative complex.
Summary of the invention
the purpose of this utility model is to provide a kind of and utilizes two kinds of nuts to rotate according to opposite direction and easily loosen the bolt of problem after preventing the mode mutually rotated from solving screw coupling member.
the bolt that the utility model proposes comprises stepped shaft screw rod and nut, and the front threads direction that the rear threads that in the screw thread on stepped shaft screw rod wherein, cross-sectional diameter is large is little with cross-sectional diameter is contrary; This nut comprises the first nut be screwed in rear threads and the second nut be screwed in front threads, the axis of the first nut is provided with blind hole, and the axis of the second nut is provided with and the through hole of blind hole on same straight line, and insert the bounding means in through hole and blind hole.
the axis of described first nut is provided with 2-10 blind hole, and the axis of the second nut is provided with 2-10 through hole.
the both sides of described stepped shaft screw rod are respectively arranged with rear threads and front threads, are provided with the location shaft shoulder extended radially outwardly in the central region of stepped shaft screw rod.
an end of described stepped shaft screw rod is provided with head, and this stepped shaft screw rod is disposed with rear threads and front threads away from one end of head.
blind hole on described first nut and the through hole on the second nut are respectively arranged with internal thread, and described bounding means is made up of the screw rod matched with the internal thread in blind hole and through hole.
described bounding means is made up of rod member.
the stepped shaft screw rod that a kind of bolt that the utility model proposes adopts is provided with the contrary outside thread of both direction, and adopt two nuts, the first nut is wherein provided with blind hole, second nut is provided with and the through hole of blind hole on same straight line, after two nut drivings are on stepped shaft screw rod, two nuts are fixed by recycling bounding means, and because of the sense of rotation of two nuts contrary, so, even if be subject to very large External Force Acting after this kind of bolt is locked, also nut rotation can not be made, bolt can be made also can not to loosen under very big bang power effect, in addition, the parts connected due to bolt need first to be fallen by Bolt dismantling when changing, and when nut is screwed off from screw rod, as long as with regard to energy demounting bolt after first bounding means being taken out in nut, so, even if this kind of bolt locking, also can not be damaged when dismantling.
Accompanying drawing explanation
accompanying drawing 1 is the surface structure schematic diagram that the nut of the bolt embodiment that the utility model proposes launches;
accompanying drawing 2 is surface structure schematic diagram of Fig. 1 scala media trapezoidal screw.
Embodiment
see Fig. 1 and Fig. 2, these two figure provide the overall appearance structure of the bolt embodiment that the utility model proposes.This bolt comprises stepped shaft screw rod 1, nut 2, bounding means 3 and the location shaft shoulder 4.The described location shaft shoulder 4 is the parts for preventing stepped shaft screw rod 1 from rotating, it is arranged on the central region of stepped shaft screw rod 1, this location shaft shoulder 4 extending radially outwardly from stepped shaft screw rod 1, the stepped shaft screw rod 1 of the shaft shoulder 4 both sides, location is respectively arranged with rear threads 11 and front threads 12, the cross-sectional diameter at position, rear threads 11 place is greater than the cross-sectional diameter at position, front threads 12 place, and rear threads 11 is contrary with the direction of front threads 12; Nut 2 comprises first nut 21 that can be screwed in rear threads 11 and the second nut 22 be screwed in front threads 12, and the first nut 21 and the second nut 22 are provided with internal thread 25.The axis of described first nut is provided with blind hole 23, and the axis of the second nut 22 is provided with the through hole 24 with blind hole 23 on same straight line, and blind hole 23 and through hole 24 can be provided with 2-10, and the present embodiment only provides 6 blind holes 23 and through hole 24.Described bounding means 3 can adopt rod member or screw rod, if employing screw rod, first internal thread (not providing in figure) is respectively arranged with by the blind hole 23 on the first nut 21 and the through hole 24 on the second nut 22, screw rod can be screwed in blind hole 23 and through hole 24, if employing rod member, rod member directly can be inserted in blind hole 23 and through hole 24.
the bolt that the present embodiment proposes is suitable for fixing Off-the-road tire, connect tire process in, after in the hole of first the location shaft shoulder 4 of stepped shaft screw rod 1 being inserted spoke, first the first nut 21 is screwed in the rear threads 11 of stepped shaft screw rod 1, then the second nut 22 is screwed in the front threads 12 of stepped shaft screw rod 1, and make the blind hole 23 on the first nut 21 and the through hole 24 on the second nut 22 on same straight line, finally bounding means 3 is inserted in blind hole 23 from through hole 24.The direction of rotating due to the first nut 21 and the second nut 22 is contrary, and after mounting limit part 3, the first nut 21 and the second nut 22 are subject to super-strength vibration frequency and also can not rotate, and effectively can protect tire.
in addition, bolt due to this kind of structure can connect the parts in each field, so, bolt also can adopt and an end of stepped shaft screw rod 1 is provided with head (not providing in figure), and be disposed with rear threads and front threads at this stepped shaft screw rod 1 away from one end of head, namely this kind of bolt only can screw the first nut 21 and the second nut 22 in a direction.
Claims (6)
1. a bolt, is characterized in that comprising:
Stepped shaft screw rod: the front threads direction that the rear threads that in the screw thread on this stepped shaft screw rod, cross-sectional diameter is large is little with cross-sectional diameter is contrary; With
Nut: this nut comprises the first nut be screwed in rear threads and the second nut be screwed in front threads, the axis of the first nut is provided with blind hole, the axis of the second nut is provided with and the through hole of blind hole on same straight line, and inserts the bounding means in through hole and blind hole.
2. bolt according to claim 1, is characterized in that: the axis of described first nut is provided with 2-10 blind hole, and the axis of the second nut is provided with 2-10 through hole.
3. bolt according to claim 1, is characterized in that: the both sides of described stepped shaft screw rod are respectively arranged with rear threads and front threads, is provided with the location shaft shoulder extended radially outwardly in the central region of stepped shaft screw rod.
4. bolt according to claim 1, is characterized in that: an end of described stepped shaft screw rod is provided with head, and this stepped shaft screw rod is disposed with rear threads and front threads away from one end of head.
5. bolt according to claim 1, is characterized in that: described bounding means is made up of rod member.
6. bolt according to claim 1, is characterized in that: the blind hole on described first nut and the through hole on the second nut are respectively arranged with internal thread, and described bounding means is made up of the screw rod matched with the internal thread in blind hole and through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420753327.1U CN204437017U (en) | 2014-12-05 | 2014-12-05 | A kind of bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420753327.1U CN204437017U (en) | 2014-12-05 | 2014-12-05 | A kind of bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204437017U true CN204437017U (en) | 2015-07-01 |
Family
ID=53604889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420753327.1U Expired - Fee Related CN204437017U (en) | 2014-12-05 | 2014-12-05 | A kind of bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204437017U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564989A (en) * | 2014-12-05 | 2015-04-29 | 本溪钢铁(集团)建设有限责任公司 | Bolt |
| CN108612242A (en) * | 2018-05-12 | 2018-10-02 | 四川华厦建辉门窗幕墙装饰有限公司 | A kind of crossbeam anti-kink structure |
-
2014
- 2014-12-05 CN CN201420753327.1U patent/CN204437017U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564989A (en) * | 2014-12-05 | 2015-04-29 | 本溪钢铁(集团)建设有限责任公司 | Bolt |
| CN108612242A (en) * | 2018-05-12 | 2018-10-02 | 四川华厦建辉门窗幕墙装饰有限公司 | A kind of crossbeam anti-kink structure |
| CN108612242B (en) * | 2018-05-12 | 2019-11-29 | 四川华厦建辉门窗幕墙装饰有限公司 | A kind of crossbeam anti-kink structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104564989A (en) | Bolt | |
| KR102270032B1 (en) | Screw element having a tool engagement portion | |
| CN105090208A (en) | Looseness-preventing and disassembling-preventing bolt | |
| WO2021077992A1 (en) | Self-locking bolt mechanism and use method thereof | |
| CN103498856B (en) | A kind of high speed rotor surface bolt fastener damping device | |
| CN1987134A (en) | Threaded connection anti-loose fastener | |
| CN202732635U (en) | Bolt capable of being prevented from loosening after being locked | |
| CN204437017U (en) | A kind of bolt | |
| CN202646308U (en) | Engineering machinery chassis driving axle annular gear shaft end slack-preventing device | |
| CN104454913A (en) | Loosening-preventing bolt | |
| CN204284167U (en) | Prevent loose type bolt | |
| CN209494822U (en) | Check bolt and automobile with the check bolt | |
| CN208169309U (en) | Nut anti-looseness device, clamp device and wheel | |
| CN213039613U (en) | Fastening device applying wedge-shaped geometric principle to prevent looseness and locking | |
| CN102678727B (en) | Fastening bolt for preventing loose after locking | |
| CN203098532U (en) | Left and right screwing thread bolt | |
| CN209621828U (en) | A kind of check bolt | |
| CN110848231A (en) | Anti-loosening connecting pair | |
| CN114165510B (en) | Antitheft self-locking integrated combined bolt fastener | |
| CN202402444U (en) | Fastening lock bolt | |
| CN205639248U (en) | Anti vibration is from jack panel | |
| CN114135633A (en) | Rotary machine torsional vibration suppression structure based on particle damping vibration absorption | |
| CN103089783A (en) | Locking oblique groove metal insert nut | |
| CN203114845U (en) | Symmetrical prepressing type anti-loosing screw nut assembly | |
| CN209557462U (en) | A kind of backstop lock nut, vehicle, generating equipment and track |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20150701 Termination date: 20161205 |