CN201250835Y - Anti-demolition bolt pair - Google Patents
Anti-demolition bolt pair Download PDFInfo
- Publication number
- CN201250835Y CN201250835Y CNU2008200272646U CN200820027264U CN201250835Y CN 201250835 Y CN201250835 Y CN 201250835Y CN U2008200272646 U CNU2008200272646 U CN U2008200272646U CN 200820027264 U CN200820027264 U CN 200820027264U CN 201250835 Y CN201250835 Y CN 201250835Y
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- CN
- China
- Prior art keywords
- nut
- bolt
- fastening
- pad
- bolt pair
- 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
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Abstract
The utility model discloses an anti-dismantling bolt pair, comprising a bolt, a nut and a pad. The utility model is characterized in that the axial outer surface of the nut is a conical surface or a spherical surface. The utility model has simple structure, can be fastened and dismantled with special tools and has good anti-dismantling effect.
Description
Technical field
The utility model relates to a kind of fastening piece, particularly a kind of anti-demounting bolt pair.
Background technique
The used connecting bolts of electric power facility such as the iron tower of power circuit, transformer mostly are common hexagon head bolt greatly, utilize instrument (as: spanner, pipe wrench etc.) commonly used to be easy to dismounting, cause a large amount of electric power facilities stolen, cause very big loss to country.In order to solve the easily stolen problem of facility, the method that adopts usually: the one: bolt is adopted the measure of non-dismountable formula,, reach antitheft purpose, but this method makes maintenance become problem as welding etc.; The 2nd: use antitheft bolt, nut.At present, existing anti-theft bolt, nut on the market, most complex structure, component are many, and the processing technology complexity is complicated during operation, and cost is also higher.Secondly, present existing bolt pair fastening, all be to adopt instrument such as spanner that nut is applied an external force, produce a Tightening moment, reach fastening purpose, external force is applied directly on the axial external surface of nut, therefore needs to process tooth or groove or rib etc. on the axial external surface of nut, so that the instrument application of force.If the axial external surface of nut is a smooth surface, then be not easy clamping, can't apply moment and carry out fastening.If on such nut, process point of application of force, then can influence its theftproof performance.
The model utility content
The purpose of this utility model is: provide a kind of dismounting simple in structure, anti-effective, locking bolt pair.
The utility model is achieved by the following technical solution: a kind of anti-demounting bolt pair, comprise bolt, nut and pad, and it is characterized in that: nut outer surface vertically is conical surface or sphere.The profile that is nut is ganoid frustum or billiard table shape, and the nut of this kind shape is because of its special profile, uses the general instrument (spanner, pipe wrench etc.) can't clamping, it can't be disassembled, and reaches antitheft purpose.The utility model can be used with common bolt, and still need use tool holding its head during fastening or demounting bolt this moment, and not only operation is inconvenient, and is unfavorable for antitheft.In order further to improve theftproof performance, the utility model is a hemisphere with the head design of bolt, makes the common instrument can not clamping, has improved theftproof performance.Under this kind situation, can carry out normal fastening or dismounting in order to make bolt and nut, design side's platform at the root of bolt, cooperate the pad that has suitable with it square hole to use.During fastening or demounting bolt, pad plays spline, does not need to re-use the tool holding bolt head, and is easy to use.
Usually electric power facility brings hidden danger because of the situation of bolt looseness appears in resonance or other reason easily to equipment.Bolt looseness in use, the utility model is in the fastening end of nut end face design tooth profile structure, this tooth-shape structure can be sawtooth or arc tooth or chisel teeth, the number of teeth can be several or a plurality of, this tooth-shape structure can guarantee that nut in fastening back and fastening piece strong bonded, can effectively prevent nut loosening.
The utility model is simple in structure, and is easy to use, its fastening and the dismounting all need use special tool.After using special tool fastening, it is fastening reliable for effect, and general instrument can't be to its clamping dismounting, and anti-dismounting is effective, and processing cost is low.
Description of drawings
Fig. 1 is an assembling schematic representation of the present utility model
Fig. 2 is the plan view of embodiment 1 nut
Fig. 3 is the left view of embodiment 1 nut
Fig. 4 be among Fig. 3 B to the rotation enlarged view
Fig. 5 is the plan view of bolt
Fig. 6 is the left view of bolt
Fig. 7 is the plan view of pad
Fig. 8 is the plan view of embodiment 2 nut
Fig. 9 is the end view of embodiment 3 nut fastening end
Figure 10 is the end view of embodiment 4 nut fastening end
Among the figure, 1 bolt, 2 nuts, 3 pads, 4 side's platforms, 5 square holes
Embodiment
Shown in accompanying drawing 1-7, a kind of anti-demounting bolt pair comprises bolt 1, nut 2 and spline pad 3, and wherein, the head of bolt 1 is a hemisphere, the screw rod root place side's of being provided with platform 4 of bolt; Spline pad 3 has the square hole 5 suitable with square platform 4; Nut 2 outer surface vertically is a conical surface, and the end face of its bigger diameter end (fastening end) has some sawtooth.During use, be in place bolt, nut, pad are manual, carry out with special tool fastening, by the rotation of spline pad 3 restriction bolts, fastening after, sawtooth and fastening piece strong bonded on the nut 2 fastening end faces can effectively prevent nut loosening.When the present invention dismantles, also need with the special tool dismounting, general instrument can't be dismantled it, thereby its anti-dismounting is effective.
Shown in accompanying drawing 5-8, a kind of anti-demounting bolt pair comprises bolt 1, nut 2 and spline pad 3, and wherein, the head of bolt 1 is a hemisphere, the screw rod root place side's of being provided with platform 4 of bolt; Spline pad 3 is for having the square hole 5 suitable with square platform 4; Nut 2 outer surface vertically is a sphere, and the end face of its fastening end has some sawtooth.During use, bolt, nut, pad are in place, carry out with special tool fastening, by the rotation of spline pad 3 restriction bolts, fastening after, sawtooth and fastening piece strong bonded on the nut 2 fastening end faces can effectively prevent nut loosening.When the present invention dismantles, also need with the special tool dismounting, general instrument can't be dismantled it, thereby its anti-dismounting is effective.
As accompanying drawing 5, Fig. 6, Fig. 7, shown in Figure 9, a kind of anti-demounting bolt pair comprises bolt 1, nut 2 and spline pad 3, wherein, the head of bolt 1 is a hemisphere, the screw rod root place side's of being provided with platform 4 of bolt; Spline pad 3 is for having the square hole 5 suitable with square platform 4; Nut 2 outer surface vertically is a conical surface, and the end face of its bigger diameter end (fastening end) has some arc teeth.During use, bolt, nut, pad are in place, carry out with special tool fastening, by the rotation of spline pad 3 restriction bolts, fastening after, arc tooth and fastening piece strong bonded on the nut 2 fastening end faces can effectively prevent nut loosening.When the present invention dismantles, also need with the special tool dismounting, general instrument can't be dismantled it, thereby its anti-dismounting is effective.
Embodiment 4
As accompanying drawing 5, Fig. 6, Fig. 7, shown in Figure 10, a kind of anti-demounting bolt pair comprises bolt 1, nut 2 and spline pad 3, wherein, the head of bolt 1 is a hemisphere, the screw rod root place side's of being provided with platform 4 of bolt; Spline pad 3 is for having the square hole 5 suitable with square platform 4; Nut 2 outer surface vertically is a conical surface, and the end face of its bigger diameter end (fastening end) has some chisel teeths.During use, bolt, nut, pad are in place, carry out with special tool fastening, by the rotation of spline pad 3 restriction bolts, fastening after, chisel teeth and fastening piece strong bonded on the nut 2 fastening end faces can effectively prevent nut loosening.When the present invention dismantles, also need with the special tool dismounting, general instrument can't be dismantled it, thereby its anti-dismounting is effective.
Claims (4)
1, a kind of anti-demounting bolt pair comprises bolt (1), nut (2) and pad (3), it is characterized in that: nut (2) outer surface vertically is conical surface or sphere.
2, anti-demounting bolt pair according to claim 1 is characterized in that: the head of bolt (1) is a hemisphere, and the root of screw rod is provided with Yi Fangtai (4); Have on the pad (3) and the suitable square hole of square platform (4).
3, anti-demounting bolt pair according to claim 1 and 2 is characterized in that: the fastening end end face of nut (2) has tooth-shape structure.
4, anti-demounting bolt pair according to claim 3 is characterized in that: described tooth-shape structure is sawtooth or arc tooth or chisel teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200272646U CN201250835Y (en) | 2008-09-01 | 2008-09-01 | Anti-demolition bolt pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200272646U CN201250835Y (en) | 2008-09-01 | 2008-09-01 | Anti-demolition bolt pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201250835Y true CN201250835Y (en) | 2009-06-03 |
Family
ID=40746508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200272646U Expired - Fee Related CN201250835Y (en) | 2008-09-01 | 2008-09-01 | Anti-demolition bolt pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201250835Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384916A (en) * | 2014-12-01 | 2015-03-04 | 南京工业大学 | conical nut pushing and pre-tightening system |
| CN106151242A (en) * | 2015-04-14 | 2016-11-23 | 朱培池 | Exempt to tear screw open |
-
2008
- 2008-09-01 CN CNU2008200272646U patent/CN201250835Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384916A (en) * | 2014-12-01 | 2015-03-04 | 南京工业大学 | conical nut pushing and pre-tightening system |
| CN104384916B (en) * | 2014-12-01 | 2017-05-31 | 南京工业大学 | A kind of tapered cup nut pushing tow pretensioner systems |
| CN106151242A (en) * | 2015-04-14 | 2016-11-23 | 朱培池 | Exempt to tear screw open |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG POWER EQUIPMENT CO., LTD. Free format text: FORMER OWNER: ZHAO YONGZHI Effective date: 20110720 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110720 Address after: 250022 Shandong Province, Ji'nan city central machine West Road No. 3 Patentee after: Shandong Power Equipment Company Address before: 250022 Shandong Province, Ji'nan city central machine West Road No. 3 Patentee before: Zhao Yongzhi |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20140901 |
|
| EXPY | Termination of patent right or utility model |