CN204419804U - A kind of stud - Google Patents
A kind of stud Download PDFInfo
- Publication number
- CN204419804U CN204419804U CN201520060237.9U CN201520060237U CN204419804U CN 204419804 U CN204419804 U CN 204419804U CN 201520060237 U CN201520060237 U CN 201520060237U CN 204419804 U CN204419804 U CN 204419804U
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- CN
- China
- Prior art keywords
- stud
- rod
- boss
- screw
- screw rod
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of stud, comprise stud polished rod and be connected to first screw rod at stud polished rod two ends, second screw rod, the external diameter of described stud polished rod is greater than the first screw rod and the second screw flight diameter, the middle part of described stud polished rod is provided with ring cutting groove, the two ends that described stud polished rod is positioned at ring cutting groove form the first boss and the second boss respectively, the connecting end of described first boss and the first screw rod and the connecting end of the second boss and the second screw rod are provided with tool withdrawal groove, described first screw rod extends away from one end end face of stud polished rod and is provided with push rod and the external diameter of push rod is less than the first screw flight diameter.The utility model structure is more reasonable, improves the installation precision at sealing position, can be good at avoiding stud polished rod part to produce bending deflection, the screw flight root be connected with main body can be avoided to produce phenomenon of rupture simultaneously, be conducive to increasing the service life.
Description
Technical field
The utility model relates to mechanical fasteners link field, is specifically related to a kind of stud.
Background technique
Stud is a kind of axial two ends all threaded column fastening pieces of tool, being mainly used in main body is main equipment, need installation accessories, such as visor, mechanical sealing base, deceleration frame etc., at this moment the stud just used, one end is screwed into main body, the other end is used for installation accessories, install another end band upper cap nut after annex, because annex is often dismounting, when direct employing Bolt Connection main body and annex, main body thread can wear and tear or damage in the course of time, and uses stud can be very convenient for the replacing of annex.Stud generally includes stud polished rod and is connected to the screw rod at stud polished rod two ends, and the external diameter of the stud polished rod of traditional stud is less than screw flight diameter usually, stud polished rod is held and can't stand excessive pressure, easy generation bending deflection phenomenon, location inaccuracy when such stud is installed simultaneously, cause its sealing position installation precision not high, moreover, the screw flight root be connected with the main body power that is usually squeezed is maximum, the larger stress of generation is concentrated, easily produces fracture after long-time use and scrap.
Model utility content
The technical problems to be solved in the utility model is to provide the more rational stud of a kind of structure, the polished rod part solving existing stud easily produces bending deflection, sealing position installation precision is not high, and the screw flight root be connected with main body easily produces the deficiency of fracture.
In order to solve the problem existing for background technique, the utility model have employed following technological scheme: a kind of stud, comprise stud polished rod, first screw rod and the second screw rod, described first screw rod and the second screw rod are connected to stud polished rod two ends and are structure as a whole with stud polished rod, the external diameter of described stud polished rod is greater than the first screw rod and the second screw flight diameter, the middle part of described stud polished rod is provided with ring cutting groove, the two ends that described stud polished rod is positioned at ring cutting groove form the first boss and the second boss respectively, the connecting end of described first boss and the first screw rod and the connecting end of the second boss and the second screw rod are provided with tool withdrawal groove, described first screw rod extends away from one end end face of stud polished rod and is provided with push rod and the external diameter of push rod is less than the first screw flight diameter.
By adopting technique scheme, when the first screw portion of stud is screwed in corresponding main body screw hole, first boss can play good positioning action, it is same when annex is installed on the second screw rod, second boss plays good positioning action, and the end face close contact that the setting of tool withdrawal groove can make the step surface of the first boss and the second boss corresponding with main body and annex respectively, be conducive to the installation precision greatly improving sealing position, the external diameter of stud polished rod is greater than the first screw rod and the second screw flight diameter, screw rod polished rod can be avoided to produce bending deflection phenomenon, and the setting of push rod can avoid the first screw flight root to produce the phenomenon of fracture, be conducive to the working life extending stud.
Further setting of the present utility model: described second screw rod is provided with regular hexagon groove away from one end end face of stud polished rod.
By adopting technique scheme, thus when the first screw rod can be made to be screwed into main body, inner hexagon spanner can be utilized to locate mounting or dismounting stud, thus can avoid manual fastening time the second screw flight silk mouth scratch hand, also can avoid damaging the phenomenon of screw thread with during other instrument auxiliary operations.
Further setting of the present utility model: the outer surface cloth that described screw thread polished rod is positioned at ring cutting groove is provided with some reinforced ribs.
By adopting technique scheme, the intensity of screw thread polished rod as connected portion can be improved further, make it not easily produce bending deflection phenomenon.
Further setting of the present utility model: one end end face of the first described boss and the corresponding ring cutting groove of the second boss is all arranged to conical surface.
By adopting technique scheme, thus when the Sealings such as gasket seal overlapped the first boss and the second boss, can avoid being scratched by the corner angle of the first boss and the second boss, to improve the sealing of equipment sealing station.
Further setting of the present utility model: the length of described push rod is not more than the half of the first spiro rod length.
By adopting technique scheme, thus the length of push rod and the first screw rod can be made more reasonable than more, making the intensity of push rod better, so that push rod better holds out against bottom the tapped hole of main body.
The beneficial effects of the utility model are: stud structure of the present utility model is more reasonable, improve the installation precision at sealing position, can be good at avoiding stud polished rod part to produce bending deflection phenomenon, the screw flight root be connected with main body can be avoided to produce phenomenon of rupture simultaneously, be conducive to increasing the service life.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of stud of the present utility model.
Embodiment
In order to make content of the present utility model more clear, below in conjunction with embodiment, the utility model is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, a kind of stud of the utility model embodiment, comprise stud polished rod 1, first screw rod 2 and the second screw rod 3, first screw rod 2 and the second screw rod 3 are connected to stud polished rod 1 two ends and are structure as a whole with stud polished rod 1, wherein, the external diameter of stud polished rod 1 is greater than the diameter of thread of the first screw rod 2 and the second screw rod 3, screw rod polished rod 1 can be avoided to produce bending deflection phenomenon, further, the middle part of stud polished rod 1 is provided with ring cutting groove 11, thus the two ends making stud polished rod 1 be positioned at ring cutting groove 11 form the first boss 12 and the second boss 13 respectively, and the connecting end of the connecting end of the first boss 12 and the first screw rod 2 and the second boss 13 and the second screw rod 3 is provided with tool withdrawal groove 4, further, to extend away from one end end face of stud polished rod 1 at the first screw rod 2 and be provided with push rod 5 and the external diameter of push rod 5 is less than the diameter of thread of the first screw rod 2, thus when the first screw rod 2 part of stud is screwed in corresponding main body screw hole, first boss 12 can play good positioning action, it is same when annex is installed on the second screw rod 3, second boss 13 plays good positioning action, and the setting of tool withdrawal groove 4 can make the end face close contact that the step surface of the first boss 12 and the second boss 13 is corresponding with main body and annex respectively, be conducive to the installation precision greatly improving sealing position, and the setting of push rod 5 can avoid the thread root of the first screw rod 2 to produce the phenomenon of fracture, be conducive to the working life extending stud.
In the present embodiment, second screw rod 3 is provided with regular hexagon groove 31 away from one end end face of stud polished rod 1, thus when the first screw rod 2 can be made to be screwed into main body, inner hexagon spanner can be utilized to locate mounting or dismounting stud, can avoid manual fastening time the second screw rod 3 silk thread mouth scratch hand, also can avoid damaging the phenomenon of screw thread with during other instrument auxiliary operations.
In the present embodiment, the outer surface cloth that screw thread polished rod 1 is positioned at ring cutting groove 11 is provided with some reinforced ribs 6, can improve the intensity of screw thread polished rod 1 as connected portion further, makes it not easily produce bending deflection phenomenon.
In the present embodiment, one end end face of the first boss 12 and the corresponding ring cutting groove 11 of the second boss 13 is all arranged to conical surface 14, thus when Sealing overlapped the first boss 12 and the second boss 13, can avoid being scratched by the corner angle of the first boss 12 and the second boss 13, to improve the sealing of equipment sealing station.
In the present embodiment, the length of push rod 5 is not more than the half of the first screw rod 2 length, the length of push rod 5 and the first screw rod 2 can be made more reasonable than more, so that push rod better holds out against bottom the tapped hole of main body.
Claims (5)
1. a stud, comprise stud polished rod, first screw rod and the second screw rod, the first described screw rod and the second screw rod are connected to stud polished rod two ends and are structure as a whole with stud polished rod, it is characterized in that: the external diameter of described stud polished rod is greater than the first screw rod and the second screw flight diameter, the middle part of described stud polished rod is provided with ring cutting groove, the two ends that described stud polished rod is positioned at ring cutting groove form the first boss and the second boss respectively, the connecting end of described first boss and the first screw rod and the connecting end of the second boss and the second screw rod are provided with tool withdrawal groove, described first screw rod extends away from one end end face of stud polished rod and is provided with push rod and the external diameter of push rod is less than the first screw flight diameter.
2. a kind of stud according to claim 1, is characterized in that: described second screw rod is provided with regular hexagon groove away from one end end face of stud polished rod.
3. a kind of stud according to claim 1, is characterized in that: the outer surface cloth that described screw thread polished rod is positioned at ring cutting groove is provided with some reinforced ribs.
4. a kind of stud according to claim 1, is characterized in that: one end end face of the first described boss and the corresponding ring cutting groove of the second boss is all arranged to conical surface.
5. a kind of stud according to claim 1, is characterized in that: the length of described push rod is not more than the half of the first spiro rod length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520060237.9U CN204419804U (en) | 2015-01-29 | 2015-01-29 | A kind of stud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520060237.9U CN204419804U (en) | 2015-01-29 | 2015-01-29 | A kind of stud |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204419804U true CN204419804U (en) | 2015-06-24 |
Family
ID=53470178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520060237.9U Expired - Fee Related CN204419804U (en) | 2015-01-29 | 2015-01-29 | A kind of stud |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204419804U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555772A (en) * | 2018-12-11 | 2019-04-02 | 贵州航天精工制造有限公司 | A kind of locking studs modular construction with stop platform |
-
2015
- 2015-01-29 CN CN201520060237.9U patent/CN204419804U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555772A (en) * | 2018-12-11 | 2019-04-02 | 贵州航天精工制造有限公司 | A kind of locking studs modular construction with stop platform |
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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 |
Granted publication date: 20150624 Termination date: 20170129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |