CN215171399U - High-strength cold-forged bolt - Google Patents
High-strength cold-forged bolt Download PDFInfo
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- CN215171399U CN215171399U CN202121752994.4U CN202121752994U CN215171399U CN 215171399 U CN215171399 U CN 215171399U CN 202121752994 U CN202121752994 U CN 202121752994U CN 215171399 U CN215171399 U CN 215171399U
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Abstract
High strength cold forged bolts. Relates to a bolt. Compact structure, can effectively improve fixed effect. The bolt comprises a bolt body, wherein the bolt body comprises a head part and a rod part which are integrally formed, the top of the head part is provided with an accommodating hole, the accommodating hole extends to the lower part of the rod part, the upper part of the accommodating hole is connected with a rotating seat through threads, the bottom of the rotating seat is provided with a bearing, and a pair of elastic limiting strips is inserted in the bearing; the hole bottom center of the containing hole is provided with a top column, the axis of the top column coincides with the binding surfaces of the pair of limiting strips, the lower part of the rod part is symmetrically provided with a pair of openings communicated with the containing hole, and the inner diameter of each opening is larger than the outer diameter of each limiting strip.
Description
Technical Field
The utility model relates to a bolt, concretely relates to high strength cold forging bolt.
Background
The bolt is a fitting which is widely applied and cannot be used from aerospace to daily life, and can be divided into a common bolt and a high-strength bolt according to different strengths. Compared with the common bolt, the high-strength bolt has many advantages: the on-site assembly has the advantages of short time, small influence on production, long service life, wide application range of components, safe and reliable connection, and better manufacturability and economy.
The existing high-strength bolt only improves the performance through the preparation method, the structure is too simple, and the fixing effect of the bolt in the hole is poor.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a compact structure can effectively improve the high strength cold forging bolt of fixed effect.
The utility model discloses a following technical scheme realizes: the high-strength cold-forging bolt comprises a bolt body, wherein the bolt body comprises a head part and a rod part which are integrally formed, the top of the head part is provided with an accommodating hole, the accommodating hole extends to the lower part of the rod part, the upper part of the accommodating hole is connected with a rotating seat through threads, the bottom of the rotating seat is provided with a bearing, and a pair of elastic limiting strips is inserted in the bearing;
the hole bottom center of the containing hole is provided with a top column, the axis of the top column coincides with the binding surfaces of the pair of limiting strips, the lower part of the rod part is symmetrically provided with a pair of openings communicated with the containing hole, and the inner diameter of each opening is larger than the outer diameter of each limiting strip.
The bearing is characterized in that a sleeve is fixedly arranged in the accommodating hole, the top of the sleeve is positioned below the bearing, the bottom of the sleeve is positioned above the top column, and the pair of limiting strips are arranged in the sleeve in a matching manner.
The top of the top column is hemispherical, the bottom of the limiting strip is provided with a cambered surface, and the cambered surfaces at the bottoms of the limiting strips surround to form a bowl shape.
The lowest position of the opening on the horizontal plane is flush with the lowest position of the containing hole on the horizontal plane.
Compared with the prior art, the utility model discloses at work, the seat rotation is rotated in the use tool drive, under the effect of bearing, the rotation downstream of rotating the seat can drive a pair of spacing straight line downstream, after a pair of spacing of laminating each other is contradicted the fore-set, a pair of spacing respectively towards both sides crooked, and extend to the outside in holding the hole through the opening, thereby the inner wall of shoring the mounting hole, the joint strength of bolt body has been improved, moreover, the steam generator is compact in structure, the fixed effect of bolt body in the mounting hole has effectively been improved
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an action state reference diagram of FIG. 1;
in the figure: 1. a head portion; 2. a rod portion; 3. a housing hole; 4. a rotating seat; 5. a bearing; 6. a limiting strip; 7. a top pillar; 8. an opening; 9. a sleeve.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
As shown in fig. 1-2, the high-strength cold-forging bolt comprises a bolt body, the bolt body comprises a head portion 1 and a rod portion 2 which are integrally formed, a containing hole 3 is formed in the top of the head portion 1, the containing hole 3 extends to the lower portion of the rod portion 2, the upper portion of the containing hole 3 is connected with a rotating seat 4 through threads, that is, inner threads are formed in the upper portion of the containing hole 3, adaptive outer threads are formed in the outer wall of the rotating seat 4, a bearing 5 is arranged at the bottom of the rotating seat 4, and a pair of elastic limit strips 6 is inserted in the bearing 5;
the hole bottom center of the containing hole 3 is provided with a top column 7, the axis of the top column 7 coincides with the binding surfaces of the pair of limiting strips 6, the lower part of the rod part 2 is symmetrically provided with a pair of openings 8 communicated with the containing hole 3, and the inner diameter of each opening 8 is larger than the outer diameter of each limiting strip 6. After the bolt body is inserted into the mounting hole and an object is locked, the rotating seat 4 is driven to rotate by using a tool (a cross hole can be formed in the top of the rotating seat 4 and is rotated by using an adaptive cross knife), the rotating seat 4 rotates downwards under the action of the bearing 5 to drive the pair of limiting strips 6 to linearly downwards move, and after the pair of mutually attached limiting strips 6 are abutted to the ejection column 7, the pair of limiting strips 6 are respectively bent towards two sides and extend to the outside of the accommodating hole 3 through the opening 8, so that the inner wall of the mounting hole is supported, the connection strength of the bolt body is improved, the structure is compact, and the fixing effect of the bolt body in the mounting hole is effectively improved; the inner diameter of the opening 8 is larger than the outer diameter of the limiting strip 6, so that the limiting strip 6 can reliably extend to the outside of the rod part 2 through the opening 8 after being bent.
The containing hole 3 is internally and fixedly provided with a sleeve 9, the top of the sleeve 9 is positioned below the bearing 5, the bottom of the sleeve 9 is positioned above the top column 7, and the pair of limiting strips 6 are arranged in the sleeve 9 in a matching manner. Set up sleeve pipe 9, play the restriction effect to a pair of spacing strip 6, ensure that spacing strip 6 is straight reciprocating motion in sleeve pipe 9, also ensured that a pair of spacing strip 6 can be inserted in a pair of opening 8 respectively and one-to-one after being parted by fore-set 7.
The top of the top column 7 is hemispherical, the bottom of the limiting strip 6 is provided with a cambered surface, and the cambered surfaces of the bottoms of the limiting strips 6 are encircled to form a bowl shape. In this way, it is ensured that the knock pin 7 can reliably achieve separation of the pair of stopper bars 6.
The lowest position of the opening 8 in the horizontal plane is flush with the lowest position of the receiving hole 3 in the horizontal plane. After being separated by the top pillar 7, the limiting strip 6 is attached to the bottom of the accommodating hole 3 to move, and the lowest position of the opening 8 on the horizontal plane is flush with the lowest position of the accommodating hole 3 on the horizontal plane, so that the limiting strip 6 can smoothly move into the opening 8.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (4)
1. High strength cold forging bolt, including the bolt body, the bolt body includes integrated into one piece's head and pole portion, its characterized in that: the top of the head is provided with an accommodating hole which extends to the lower part of the rod part, the upper part of the accommodating hole is connected with a rotating seat through threads, the bottom of the rotating seat is provided with a bearing, and a pair of elastic limiting strips is inserted in the bearing;
the hole bottom center of the containing hole is provided with a top column, the axis of the top column coincides with the binding surfaces of the pair of limiting strips, the lower part of the rod part is symmetrically provided with a pair of openings communicated with the containing hole, and the inner diameter of each opening is larger than the outer diameter of each limiting strip.
2. The high strength cold forged bolt according to claim 1, wherein: the bearing is characterized in that a sleeve is fixedly arranged in the accommodating hole, the top of the sleeve is positioned below the bearing, the bottom of the sleeve is positioned above the top column, and the pair of limiting strips are arranged in the sleeve in a matching manner.
3. The high strength cold forged bolt according to claim 1, wherein: the top of the top column is hemispherical, the bottom of the limiting strip is provided with a cambered surface, and the cambered surfaces at the bottoms of the limiting strips surround to form a bowl shape.
4. The high strength cold forged bolt according to claim 1, wherein: the lowest position of the opening on the horizontal plane is flush with the lowest position of the containing hole on the horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121752994.4U CN215171399U (en) | 2021-07-29 | 2021-07-29 | High-strength cold-forged bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121752994.4U CN215171399U (en) | 2021-07-29 | 2021-07-29 | High-strength cold-forged bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215171399U true CN215171399U (en) | 2021-12-14 |
Family
ID=79405425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121752994.4U Active CN215171399U (en) | 2021-07-29 | 2021-07-29 | High-strength cold-forged bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215171399U (en) |
-
2021
- 2021-07-29 CN CN202121752994.4U patent/CN215171399U/en active Active
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