CN2240632Y - Composite self-locking screw rod - Google Patents
Composite self-locking screw rod Download PDFInfo
- Publication number
- CN2240632Y CN2240632Y CN 95240473 CN95240473U CN2240632Y CN 2240632 Y CN2240632 Y CN 2240632Y CN 95240473 CN95240473 CN 95240473 CN 95240473 U CN95240473 U CN 95240473U CN 2240632 Y CN2240632 Y CN 2240632Y
- Authority
- CN
- China
- Prior art keywords
- screw rod
- screw
- thread
- checknut
- section
- 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
- 239000002131 composite material Substances 0.000 title 1
- 150000001875 compounds Chemical class 0.000 claims description 5
- 230000002265 prevention Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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- Bolts, Nuts, And Washers (AREA)
- Reinforcement Elements For Buildings (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model discloses an anti-loosing self-locking screw rod. A screw thread section of the screw rod is simultaneously provided with a fastening screw thread and an anti-loosing screw thread with different screwing directions. The anti-loosing screw thread can be distributed on the whole screw thread section and can also only be distributed on a section of the screw thread section. The screw rod has the advantages of simple structure, convenient use and loosing prevention and high safety.
Description
The utility model belongs to a kind of screw rod with self-locking effect.
Thread connector generally adopts the single line regular screw threads.Lead angle is less than the equivalent friction angle of screw pair.Therefore, thread connector can both self-locking conditions satisfied, that is to say, when static load and temperature change were little, thread connector can not become flexible.But under the effect of impact, vibration or varying load, frictional force may reduce or instantaneous disappearance between screw pair.After this phenomenon repeatedly repeats, will make to connect to get loose.Under the bigger situation of high temperature or temperature variation,, finally cause connecting failure because thread connector and coupled 's material generation creep and stress relaxation also can make pretightening force and frictional force in the coupling reduce gradually.In a single day getting loose appears in thread connector, the lighter can influence machine normal why not, weight person can cause serious accident.Therefore, to get loose in order preventing to connect, to guarantee that connection is safe and reliable, scyewed joint must have locking measure.
At present, anti-loose method has friction locking, and the locking and riveting of machinery is towards locking etc.Specifically, friction is locking pair jacking nut, spring washer, a self-locking nut.But it is locking under impact, vibration condition to rub, and its anti-loosing effect is relatively poor.The machinery anti-loose method has cotter pin and slotted nut, lock washer, and the series connection steel wire, though machinery is locking reliable, installation, dismounting trouble.The riveted joint anti-loose method has the end riveting, and towards point, but it is applicable to the special connection that need not dismantle, and coupling can not be reused, serious waste phenomenon.
But the purpose of this utility model is to provide a kind of self-locking, the anti-loose tight screw rod of thread connector-----compound self-lock.
For realizing the screw rod of the utility model purpose, be characterized on screw rod, being provided with the screw thread of two kinds of different rotation directions, the Hand of spiral of these two kinds of screw threads is opposite, therefore, these two kinds of screw threads have the self-locking effect, and wherein a kind of screw thread is a binding thread, and another kind of screw thread is a checknut.
Described binding thread and checknut can intersect, and all are distributed on the whole thread section of screw rod; Perhaps binding thread and checknut intersect mutually, and binding thread is distributed on the whole thread section, and checknut only is near on one section screw thread of screw tip.
Perhaps, screw design is different two sections of diameter, only is provided with checknut on the thread section of less diameter screw, only is being provided with binding thread than major diameter screw flight section.
The utility model is simple in structure, and is easy-to-use, locking safe and reliable.
Accompanying drawing 1 is a front view of the present utility model.
Accompanying drawing 2 is side views of the present utility model.
Accompanying drawing 3 is one of enforcement illustrations of the present utility model.
Accompanying drawing 4 is two of enforcement illustrations of the present utility model.
Accompanying drawing 5 is three of enforcement illustrations of the present utility model.
Embodiment:
From Fig. 1 and Fig. 2 as can be seen, self-locking screw rod 1 described in the utility model is provided with the binding thread 3 and the checknut 4 of two kinds of different rotation directions, and the Hand of spiral of binding thread 3 and checknut 4 is opposite.Get it in conjunction with Fig. 3, binding thread 3 and checknut 4 can intersect mutually, through whole thread section 2.Tighten respectively when fastening nut 5 and jam nut 6 and to put in place, under the effect of impact, vibration, varying load, the loosening frictional force that will cause producing between fastening nut 5 and jam nut 6 surface of contact of fastening nut 5 is tightened jam nut, thereby prevents the loosening of fastening nut 5 and jam nut 6.For not weakening the intensity of screw thread, can adopt the structure of Fig. 4 or Fig. 5 of the utility model embodiment, be located at as 4 of Fig. 4 checknuts on one section screw thread in top of screw rod 2; Perhaps, be different two sections of diameter as Fig. 5 screw design, only be provided with checknut 4 on its less diameter screw, it is than only being provided with binding thread 3 on the major diameter screw rod.
Screw flight described in the utility model is not only applicable to v thread, and be applicable to trapezoidal, rectangle and other abnormal screw thread, for preventing the slip between tightening nut and the lock nut better, can between tightening nut and lock nut, add elastic washer and lock washer.
Claims (4)
1, a kind of compound self-lock screw rod, it is characterized in that: screw rod is provided with the screw thread of two kinds of different rotation directions, and the hand of spiral of these two kinds of screw threads is opposite, described two kinds of screw threads that Hand of spiral is opposite, it is a kind of to be binding thread, another kind is a checknut.
2, compound self-lock screw rod according to claim 1 is characterized in that:, binding thread and checknut intersect mutually, all are distributed on the whole thread section of screw rod.
3, compound self-lock screw rod according to claim 1, it is characterized in that: binding thread and checknut intersect mutually, and binding thread is distributed in the whole thread section of screw rod, and checknut only is on one section screw thread of screw tip.
4, compound self-lock screw rod according to claim 1 is characterized in that: screw rod can be designed to different two sections of diameter, only is provided with checknut on the thread section of less diameter screw, only is being provided with binding thread than major diameter screw flight section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95240473 CN2240632Y (en) | 1995-09-11 | 1995-09-11 | Composite self-locking screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95240473 CN2240632Y (en) | 1995-09-11 | 1995-09-11 | Composite self-locking screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2240632Y true CN2240632Y (en) | 1996-11-20 |
Family
ID=33882049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95240473 Expired - Fee Related CN2240632Y (en) | 1995-09-11 | 1995-09-11 | Composite self-locking screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2240632Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1081497C (en) * | 1997-11-14 | 2002-03-27 | 唐宗才 | Threading tool for rolling compound thread and processing method thereof |
| WO2002057639A1 (en) * | 2001-01-19 | 2002-07-25 | Zong Cai Tang | A composite screw structure having elliptical cross-section of minor diameter thereof |
| CN1114047C (en) * | 1999-07-27 | 2003-07-09 | 唐宗才 | Compound thread |
| WO2014012409A1 (en) * | 2012-07-18 | 2014-01-23 | 上海鸣志电器股份有限公司 | Linear stepper motor |
| CN105090208A (en) * | 2015-08-25 | 2015-11-25 | 王景东 | Looseness-preventing and disassembling-preventing bolt |
| CN107084184A (en) * | 2017-06-20 | 2017-08-22 | 国家电网公司 | A kind of screw rod for electrical equipment fastens anti-loose structure and method |
-
1995
- 1995-09-11 CN CN 95240473 patent/CN2240632Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1081497C (en) * | 1997-11-14 | 2002-03-27 | 唐宗才 | Threading tool for rolling compound thread and processing method thereof |
| CN1114047C (en) * | 1999-07-27 | 2003-07-09 | 唐宗才 | Compound thread |
| WO2002057639A1 (en) * | 2001-01-19 | 2002-07-25 | Zong Cai Tang | A composite screw structure having elliptical cross-section of minor diameter thereof |
| WO2014012409A1 (en) * | 2012-07-18 | 2014-01-23 | 上海鸣志电器股份有限公司 | Linear stepper motor |
| CN103580370A (en) * | 2012-07-18 | 2014-02-12 | 上海鸣志电器股份有限公司 | Stepping linear motor |
| CN103580370B (en) * | 2012-07-18 | 2016-08-03 | 上海鸣志电器股份有限公司 | Step-by-step linear electric motor |
| CN105090208A (en) * | 2015-08-25 | 2015-11-25 | 王景东 | Looseness-preventing and disassembling-preventing bolt |
| CN107084184A (en) * | 2017-06-20 | 2017-08-22 | 国家电网公司 | A kind of screw rod for electrical equipment fastens anti-loose structure and method |
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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 |
Owner name: NO.302, BUILDING 2,QUEQIAOYICUN, MAANSHAN CITY, AN Free format text: FORMER NAME OR ADDRESS: MACHINE REPAIR WORKSHOP, MEDIUM PLATE FACTORY, MAANSHAN IRON AND STEEL AG, ANHUI |
|
| CP03 | Change of name, title or address |
Patentee address after: Anhui province Ma'anshan city bridge 1 Village 2 302 Patentee address before: Machine repair shop of medium plate plant, Maanshan Iron & Steel Company, Anhui |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |