CN201218265Y - Self-locking fastening bolt device - Google Patents
Self-locking fastening bolt device Download PDFInfo
- Publication number
- CN201218265Y CN201218265Y CNU2008203008630U CN200820300863U CN201218265Y CN 201218265 Y CN201218265 Y CN 201218265Y CN U2008203008630 U CNU2008203008630 U CN U2008203008630U CN 200820300863 U CN200820300863 U CN 200820300863U CN 201218265 Y CN201218265 Y CN 201218265Y
- Authority
- CN
- China
- Prior art keywords
- nut
- bolt
- self
- screw
- locking fixing
- 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
- 230000008961 swelling Effects 0.000 claims description 13
- 230000003044 adaptive effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 description 10
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910000753 refractory alloy Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses a can prevent effectively that bolt fastener is not hard up or the auto-lock fastening bolt device that drops on high-speed rotation, strong vibrating equipment. The device comprises a bolt and a nut matched with the bolt, wherein one end of the bolt, which is connected with the nut, is radially expanded in a screw hole of the nut through an expansion device. One end of the bolt connected with the nut is radially expanded in the screw hole of the nut through the expansion device, so that one end of the bolt connected with the nut is tightly locked inside the nut, the self-locking purpose is achieved, and the bolt fastener is prevented from loosening or falling off. The device can be conveniently installed and detached, effectively resists impact load and alternating load, and prevents the bolt fastener from loosening or falling off under the conditions of strong vibration and the like.
Description
Technical field
The utility model belongs to the machanical fastener technical field, is specifically related to a kind of self-locking fixing bolt device.
Background technique
Various engineering goods especially run up, vibrate in the strong machinery, and under strong impact loading, bolt fastener is easy to loosening and even comes off, and often causes mechanical failure to take place.For preventing the loosening of bolt fastener and come off that the method that adopts is to be coated with special-purpose plastic cement on screw thread usually, perhaps adopt the method that adds spring washer.But said method is unsuitable in high strength, vibrates on the big equipment and use.
The model utility content
Technical problem to be solved in the utility model is: a kind of self-locking fixing bolt device that can prevent effectively that bolt fastener from becoming flexible or coming off on the equipment of high speed rotating, judder is provided.
The technological scheme that solves the problems of the technologies described above is: self-locking fixing bolt device, comprise bolt and adaptive with it nut, an end that connects with nut on the bolt by swelling device radially swelling in the screw of nut.
As the preferred version of technique scheme, an end that connects with nut on the bolt is the structure of radially opening and closing, is provided with in this structure and makes its open support.
As the preferred version of technique scheme, it axially cuts out the cutter groove and forms the radially structure of opening and closing in the bolt upper edge, and support stretches into the cutter groove and outwards withstands the inwall of cutter groove.
Further be that the cross section of cutter groove is cross.
Further be, support is installed on the screw rod, the adaptive connection of the screw thread of screw rod and nut.
Further be that support adopts cone structure.
Further be, the screw of nut is made up of the screw that two sector holes directly vary in size, the adaptive connection of screw that the aperture is big and screw flight, the screw that the aperture is little and the adaptive connection of the screw thread of bolt.
The beneficial effects of the utility model are: an end that connects with nut on the bolt by swelling device radially swelling in the screw of nut, thereby make an end that connects with nut on the bolt tightly be locked in nut inside, reach the self-locking purpose, prevent that bolt fastener is loosening or come off.A kind of concrete structure as swelling device, an end that connects with nut on the bolt is the structure of radially opening and closing, be provided with in this structure and make its open support, in the fastening process of bolt, the end that support connects bolts and nuts produces local deformation, radial dilatation takes place, thereby the end that bolts and nuts are connect tightly is locked in nut inside, reaches the self-locking purpose.The utility model self-locking fixing bolt device can mount and dismount easily, effectively resists impulsive load and alternate load, prevents that bolt fastener is loosening or come off under situations such as judder.
Description of drawings
Fig. 1 is the structural representation of the utility model self-locking fixing bolt device.
Fig. 2 is the structural representation of bolt in the utility model self-locking fixing bolt device.
Fig. 3 be among Fig. 2 A to schematic representation.
Fig. 4 is the structural representation of nut in the utility model self-locking fixing bolt device.
Fig. 5 is the structural representation of support and screw rod in the utility model self-locking fixing bolt device.
Be labeled as among the figure: bolt 1, nut 2, cutter groove 3, support 4, screw rod 5.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
As Fig. 1～self-locking fixing bolt device shown in Figure 5, comprise bolt 1 and adaptive with it nut 2, wherein an end that connects with nut 2 on the bolt 1 by swelling device radially swelling in the screw of nut 2.As a kind of concrete structure of swelling device, an end that connects with nut 2 on the bolt 1 is the structure of radially opening and closing, is provided with in this structure and makes its open support 4.Because bolt 1 is the structure of radially opening and closing with the end that nut 2 connects, therefore in the fastening process of bolt 1, support 4 makes an end that connects with nut 2 on the bolt 1 produce local deformation, make it that radial dilatation take place, thereby make on the bolt 1 end that connects with nut 2 radially swelling reach the self-locking purpose in nut 2 inside.In addition, swelling device also can adopt the screw that makes nut 2 to shrink to reach make the end that connects with nut 2 on the bolt 1 radially swelling in the screw of nut 2.
As Fig. 1～Fig. 3, as a kind of concrete form of radially opening and closing structure, it axially cuts out cutter groove 3 and forms the radially structure of opening and closing in bolt 1 upper edge, and support 4 stretches into cutter groove 3 and outwards withstands the inwall of cutter groove 3.After cutting out cutter groove 3 on the bolt 1, make this position produce the certain elastic deformation ability, when support 4 stretches into cutter groove 3 and outwards withstands the inwall of cutter groove 3, just can produce radial dilatation, make bolt 1 and the end that nut 2 connects tightly be locked in nut 2 inside.Above-mentioned form is simple, is convenient to make.Certainly, radially the structure of opening and closing can also adopt other form, as lobe shape structure, pincerlike structure etc.Bolt 1 preferably adopts carbon steel, alloyed steel, titanium alloy, refractory alloy, aluminum alloy, Cuprum alloy, plastics etc. to be easy to material processed manufacturing, so that the processing of cutter groove 3.
, distortion stressed when local deformation is taken place for the structure that guarantees radially opening and closing evenly guarantees that simultaneously bolt 1 and nut 2 connect the intensity of an end, and as Fig. 1～Fig. 3, the cross section of cutter groove 3 is cross.
As Fig. 1～Fig. 5, for the ease of the installation of support 4, support 4 is installed on the screw rod 5, the adaptive connection of screw thread of screw rod 5 and nut 2.The nose shape of screw rod 5 can be arranged to coiled hair, socket cap, countersunk head, countersunk raised head, hexangle type and special-shaped first-class, so that screw rod 5 is tightened in the nut 2.Screw rod 5 and support 4 preferably adopt integrative-structure, promptly earlier process support 4 at an end of a cylinder blank, process the nose shape of screw rod 5 at the other end, at the cylinder blank screw thread of getting on the bus out, form screw rod 5 then.
As Fig. 1, Fig. 5, support 4 preferably adopts cone structure, is convenient to the inwall that support 4 stretches into cutter groove 3 and outwards withstands cutter groove 3 like this.The cone angle of support 4 is preferably disposed between 30 °～60 °, so that cutter groove 3 is backed down.
As Fig. 1 and Fig. 4, the screw of nut 2 is made up of the screw that two sector holes directly vary in size, the adaptive connection of screw thread of screw that the aperture is big and screw rod 5, the adaptive connection of screw thread of screw that the aperture is little and bolt 1.The axial length of the screw that two sector holes directly vary in size can be determined according to the concrete model of bolt 1.The screw of nut 2 is made up of the screw that two sector holes directly vary in size, and easier judgement nut 2 forward and reverse guarantees that simultaneously screw rod 5 can bear the axial pressure of bolt 1 preferably.
Claims (7)
1. self-locking fixing bolt device comprises bolt (1) and adaptive with it nut (2), it is characterized in that: bolt (1) go up an end that connects with nut (2) pass through swelling device radially swelling in the screw of nut (2).
2. self-locking fixing bolt device as claimed in claim 1 is characterized in that: it is the structure of opening and closing radially that bolt (1) is gone up an end that connects with nut (2), is provided with in this structure and makes its open support (4).
3. self-locking fixing bolt device as claimed in claim 2 is characterized in that: it axially cuts out cutter groove (3) and forms the radially structure of opening and closing in bolt (1) upper edge, and support (4) stretches into cutter groove (3) and outwards withstands the inwall of cutter groove (3).
4. self-locking fixing bolt device as claimed in claim 3 is characterized in that: the cross section of cutter groove (3) is cross.
5. as claim 3 or 4 described self-locking fixing bolt devices, it is characterized in that: support (4) is installed on the screw rod (5), the adaptive connection of screw thread of screw rod (5) and nut (2).
6. self-locking fixing bolt device as claimed in claim 5 is characterized in that: support (4) adopts cone structure.
7. self-locking fixing bolt device as claimed in claim 5, it is characterized in that: the screw of nut (2) is made up of the screw that two sector holes directly vary in size, the adaptive connection of screw thread of screw that the aperture is big and screw rod (5), the adaptive connection of screw thread of screw that the aperture is little and bolt (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203008630U CN201218265Y (en) | 2008-05-26 | 2008-05-26 | Self-locking fastening bolt device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203008630U CN201218265Y (en) | 2008-05-26 | 2008-05-26 | Self-locking fastening bolt device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201218265Y true CN201218265Y (en) | 2009-04-08 |
Family
ID=40541101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008203008630U Expired - Fee Related CN201218265Y (en) | 2008-05-26 | 2008-05-26 | Self-locking fastening bolt device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201218265Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482023A (en) * | 2014-12-07 | 2015-04-01 | 泉州市永茂电子科技有限公司 | Screw rod, expansion rod and anti-loosening bolt available for strong-shock environments or mining machinery |
| CN108561401A (en) * | 2018-07-13 | 2018-09-21 | 嘉兴涵祺汽配科技有限公司 | A kind of high-strength bolt of fixation |
| CN114526281A (en) * | 2022-02-23 | 2022-05-24 | 中国航发沈阳发动机研究所 | Bolt fastener and fastening tool thereof |
-
2008
- 2008-05-26 CN CNU2008203008630U patent/CN201218265Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482023A (en) * | 2014-12-07 | 2015-04-01 | 泉州市永茂电子科技有限公司 | Screw rod, expansion rod and anti-loosening bolt available for strong-shock environments or mining machinery |
| CN108561401A (en) * | 2018-07-13 | 2018-09-21 | 嘉兴涵祺汽配科技有限公司 | A kind of high-strength bolt of fixation |
| CN114526281A (en) * | 2022-02-23 | 2022-05-24 | 中国航发沈阳发动机研究所 | Bolt fastener and fastening tool thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090408 |