CN201714779U - Dodecagonal star flange-faced semi-threaded bolt device - Google Patents
Dodecagonal star flange-faced semi-threaded bolt device Download PDFInfo
- Publication number
- CN201714779U CN201714779U CN2010201750271U CN201020175027U CN201714779U CN 201714779 U CN201714779 U CN 201714779U CN 2010201750271 U CN2010201750271 U CN 2010201750271U CN 201020175027 U CN201020175027 U CN 201020175027U CN 201714779 U CN201714779 U CN 201714779U
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- China
- Prior art keywords
- nut
- bolt
- screw rod
- screw
- bolt head
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- Expired - Fee Related
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- Bolts, Nuts, And Washers (AREA)
Abstract
A dodecagonal star flange-faced semi-threaded bolt device comprises a bolt, a nut matched with the bolt in a threaded manner, and an anti-loosening screw, wherein a bolt head and a screw rod are integrally formed on the bolt, the cross sections of both the bolt head and the nut are in the shapes of dodecagonal star prisms, flanges integrated with the bolt head and nut are arranged at the inner ends of the bolt head and the nut, the axial length of threads of the bolt is no more than two thirds of the length of the screw rod, a positioning slot axially extending and used for positioning the anti-loosening screw is arranged on the outer peripheral face of the screw rod, size of the positioning slot is matched with that of the anti-loosening screw, and a positioning threaded hole penetrating through along the radial direction and matched with the anti-loosening screw in a threaded manner is arranged on the lateral wall of the nut. The dodecagonal star flange-faced semi-threaded bolt device can axially limit the nut and has fine anti-loosening effect.
Description
Technical field
The utility model relates to technical field of fastening, particularly a kind of 12 jiaos of plum blossom flanged surface partial thread bolt devices.
Background technique
Bolt device is used widely as fastening piece, especially is applied to being connected and fixed of machinery.In order to allow equipment well connect, when fixing bolt, need consider to prevent that its generation is loosening.The common method that prevents bolt looseness generally is that the mode that adopts fasteners such as elastic washer, toothed washer or shell fragment to compress realizes, but in some special mechanical occasions, the bolt device that uses on the cantilever arrangement as crane, its vibration frequency is higher, vibration amplitude is big and bear certain lateral load, if can not prevent effectively that nut and screw rod from producing relative rotation, cantilever equipment can be because of the nut loosening of bolt device, come off and cause damage, has certain potential safety hazard.
The model utility content
Technical problem to be solved in the utility model is: providing a kind of can carry out axial limiting, 12 jiaos of plum blossom flanged surface partial thread bolt devices that anti-loosing effect is good to nut.
The technical scheme in the invention for solving the above technical problem is: a kind of 12 jiaos of plum blossom flanged surface partial thread bolt devices, comprise the bolt and the nut of screw-thread fit with it, and described bolt is provided with integrated bolt head and screw rod; It also comprises at least one jam nut, described bolt head and nut are the prism that cross section is 12 jiaos of plum blossom shapes, and the inner of described bolt head and nut is equipped with integrated with it flange, the axial length of the screw thread of described bolt equal at the most screw rod length 2/3rds; The outer peripheral surface of described screw rod is provided with the locating slot that extends vertically, be used for the jam nut location, the size of described locating slot and the size of described jam nut match, the sidewall of described nut be provided with radially run through and with the positioning spiro pit of described jam nut screw-thread fit.
Compared with prior art, advantage of the present utility model is: the outer peripheral surface of the bolt shank of these 12 jiaos of plum blossom flanged surface partial thread bolt devices is provided with the locating slot that extends vertically, be used for the screw location, radially be provided with the tapped hole that cooperates with screw thread on the outer peripheral surface of nut, during use, nut is screwed on screw rod, determined the mounting point, then backing-up screw is screwed in the positioning spiro pit on nut, and jam nut is butted in the locating slot, is positioned by locating slot.Like this, though nut the vibration and lateral load under, jam nut also can carry out axial limiting to nut, thereby realizes the purpose of locking anticreep, its anti-loosing effect is better.
The quantity of described jam nut, locating slot and positioning spiro pit is two; The quantity of described jam nut, locating slot and positioning spiro pit is two; Described two locating slots are symmetricly set on the outer peripheral surface of screw rod vertically; Described two positioning spiro pits are symmetricly set on the sidewall of nut along axis.Like this, can be good at realizing axial limiting to nut, and stressed evenly, big influence can not arranged to the intensity of bolt.
Described locating slot is an opening slot, and described opening end is located at the end of screw rod away from bolt head.Like this, the processing of locating slot is convenient.
Description of drawings
The structural representation of 12 jiaos of plum blossom flanged surfaces of Fig. 1 the utility model partial thread bolt device.
The left view of the bolt of 12 jiaos of plum blossom flanged surfaces of Fig. 2 the utility model partial thread bolt device.
The sectional view of the nut of 12 jiaos of plum blossom flanged surfaces of Fig. 3 the utility model partial thread bolt device.
Among Fig. 1-3: 1 nut, 1.1 positioning spiro pits, 2 bolts, 2.1 screw rods, 2.2.1 locating slot, 2.2 bolt heads, 3 jam nuts
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
As Figure 1-3, a kind of 12 jiaos of plum blossom flanged surface partial thread bolt devices comprise the bolt 2 and the nut 1 of screw-thread fit with it, and described bolt 2 is provided with integrated bolt head 2.2 and screw rod 2.1; It also comprises two jam nuts 3, and described bolt head 2.2 and nut 1 are the prism that cross section is 12 jiaos of plum blossom shapes, and the inner of described bolt head 2.2 and nut 1 is equipped with integrated with it flange 4, and described flange 4 is round table-like; The axial length of the screw thread of described bolt 2 equal screw rod 2.1 length 2/3rds; Be arranged with the locating slot 2.2.1 that extends vertically, be used for jam nut 3 location on the outer peripheral surface of described screw rod 2.1, the size of the size of described locating slot 2.2.1 and described jam nut 3 matches, the sidewall of described nut 1 be provided with radially run through and with the positioning spiro pit 1.1 of described jam nut 3 screw-thread fit.Described nut 1 screws on the screw rod 2.1 of described bolt 2, and described jam nut 3 screws in positioning spiro pit 1.1, and described jam nut 3 is butted in the locating slot 2.2.1.
In this example, described locating slot 2.2.1 is an opening slot, and described opening end is located at the end of screw rod 2.1 away from bolt head 2.2.And the length of described locating slot 2.2.1 equals the axial length of the screw thread of bolt 2.
The utility model not only is confined to above embodiment, and its concrete structure allows variation, as: the quantity of jam nut 3 can be 1 or 4; Deng.
Claims (3)
1. one kind 12 jiaos plum blossom flanged surface partial thread bolt devices comprise bolt (2) and the nut of screw-thread fit (1) with it, and described bolt (2) is provided with integrated bolt head (2.2) and screw rod (2.1); It is characterized in that: it also comprises at least one jam nut (3), described bolt head (2.2) and nut (1) are the prism that cross section is 12 jiaos of plum blossom shapes, and the inner of described bolt head (2.2) and nut (1) is equipped with integrated with it flange (4), the axial length of the screw thread of described bolt (2) equal at the most screw rod (2.1) length 2/3rds; The outer peripheral surface of described screw rod (2.1) is provided with the locating slot (2.2.1) that extends vertically, be used for jam nut (3) location, the size of the size of described locating slot (2.2.1) and described jam nut (3) matches, the sidewall of described nut (1) be provided with radially run through and with the positioning spiro pit (1.1) of described jam nut (3) screw-thread fit.
2. 12 jiaos of plum blossom flanged surface partial thread bolt devices according to claim 1, it is characterized in that: the quantity of described jam nut (3), locating slot (2.2.1) and positioning spiro pit (1.1) is two; Described two locating slots (2.2.1) are symmetricly set on the outer peripheral surface of screw rod (2.1) vertically; Described two positioning spiro pits (1.1) are symmetricly set on the sidewall of nut (1) along axis.
3. 12 jiaos of plum blossom flanged surface partial thread bolt devices according to claim 1, it is characterized in that: described locating slot (2.2.1) is an opening slot, and described opening end is located at the end of screw rod (2.1) away from bolt head (2.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201750271U CN201714779U (en) | 2010-04-26 | 2010-04-26 | Dodecagonal star flange-faced semi-threaded bolt device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201750271U CN201714779U (en) | 2010-04-26 | 2010-04-26 | Dodecagonal star flange-faced semi-threaded bolt device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201714779U true CN201714779U (en) | 2011-01-19 |
Family
ID=43460775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201750271U Expired - Fee Related CN201714779U (en) | 2010-04-26 | 2010-04-26 | Dodecagonal star flange-faced semi-threaded bolt device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201714779U (en) |
-
2010
- 2010-04-26 CN CN2010201750271U patent/CN201714779U/en not_active Expired - Fee Related
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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: 20110119 Termination date: 20110426 |