CN104406457B - A kind of shearing fracture screw detachable mechanism - Google Patents
A kind of shearing fracture screw detachable mechanism Download PDFInfo
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- CN104406457B CN104406457B CN201410753231.XA CN201410753231A CN104406457B CN 104406457 B CN104406457 B CN 104406457B CN 201410753231 A CN201410753231 A CN 201410753231A CN 104406457 B CN104406457 B CN 104406457B
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Abstract
The present invention relates to a kind of shearing fracture screw detachable mechanism, belong to civil rocket bullet field. Fracture screw detachable mechanism of the present invention, comprises dismounting piece, locking screw, sunk screw, location matrix; Dismounting piece is placed in the cylindrical recesses of location body upper surface, and two sunk screw front ends, through dismantling the counterbore of piece both sides, being threaded with the screwed hole of both sides, the end in the matrix cylindrical recesses of location, make to dismantle piece and fix with location matrix; The thread segment of locking screw lower end is threaded in the screwed hole of centre of dismounting piece, and insert in the unthreaded hole of matrix cylindrical recesses Nei Di center, location locking screw lower end. Fracture screw detachable mechanism of the present invention, simple in structure, easy to process, solution, when the closedown structure of traditional structure is subject to after cross shear, is difficult to take out the technological difficulties of locking screw remainder, has important application value.
Description
Technical field
The present invention relates to a kind of shearing fracture screw detachable mechanism, belong to civil rocket bullet field.
Background technology
In civil rocket bullet transportation, mainly play location, guiding and locking effect by being positioned at the directed button of rocket projectile afterbody; In emission process, it coordinates with rocket gun tube helical guide groove, can ensure to make low-speed rotation after rocket ejects gun muzzle, to reduce motor power bias and the asymmetric adverse effect of body profile.
At present, civil rocket bullet is to precise guidance future development, and its inertial navigation system cannot normally be worked in missile rotation situation, is to ensure guided rocket bullet and the suitability of tradition with helical guide groove gun tube, requires the directed button can Automatic-falling in emission process.
The directed button automatic dropping device of tradition civil rocket projectile tail portion adopts and is connected with body with the locking screw of cut groove, and when transmitting, locking screw is sheared by gun tube, and after separating, fracture screw nubbin is still stayed in body. according to the design of rocket projectile blocking force, locking screw is within the specific limits stressed. under normal circumstances, in transport and filling and march process, can not rupture, but under some extreme cases, such as screw material and manufacturing deficiency and while manually lifting the improper collision such as not in place, locking screw is severed sometimes by mistake, and be connected with body because locking screw root adopts screw thread, and after requiring to shear, section is smooth, nubbin is imbedded in rocket airframe completely, add priming system and accurate guidance instrument are housed on bullet, therefore adopt conventional instrument to be difficult to it taking-up, when serious, body screw thread even can stress deformation, cause changing screw, cause scrapping of civil rocket bullet or assembly.
Summary of the invention
To the object of the invention is to be subject to after cross shear when the closedown structure of traditional structure in order solving, to be difficult to take out the remainder of locking screw, and a kind of shearing fracture screw detachable mechanism is provided.
The object of the invention is to be achieved through the following technical solutions:
The shearing fracture screw of one of the present invention detachable mechanism, comprises dismounting piece, locking screw, sunk screw, location matrix;
Locking screw comprises lower end thread segment and upper end cylinder connection section, between the thread segment of locking screw and cylinder connection section, has annular cut groove;
The upper surface of location matrix has cylindrical recesses, and matrix cylindrical recesses Nei Di center, location has the unthreaded hole that internal diameter is greater than locking screw lower end thread segment external diameter, and unthreaded hole both sides, matrix cylindrical recesses Nei Di center, location respectively have a screwed hole;
The profile of dismounting piece matches with the interior shape of location body upper surface cylindrical recesses, and dismounting Kuai center has the screwed hole of vertical perforate, and the internal thread of dismounting piece screwed hole of centre and the external screw thread of locking screw lower end thread segment match; The both sides of dismounting piece screwed hole of centre have the counterbore of vertical perforate; The dismounting screwed hole of centre of piece and the distributing position of both sides counterbore match with the pore size and distribution position of location matrix cylindrical recesses Nei Di center unthreaded hole and both sides screwed hole respectively;
Dismounting piece is placed in the cylindrical recesses of location body upper surface, and the screwed hole of centre and the both sides counterbore that make to dismantle on piece align with location matrix cylindrical recesses Nei Di center unthreaded hole and both sides screwed hole respectively; Two sunk screw front ends, through dismantling the counterbore of piece both sides, being threaded with the screwed hole of both sides, the end in the matrix cylindrical recesses of location, make to dismantle piece and fix with location matrix; The thread segment of locking screw lower end is threaded in the screwed hole of centre of dismounting piece, and insert in the unthreaded hole of matrix cylindrical recesses Nei Di center, location locking screw lower end; Matrix lower end, location and body sidewall are fixed, and cylinder connection section and the directed button of locking screw upper end are fixed.
The course of work
When rocket projectile transport, when locking screw is in the time being subject to cross shear, this shearing force can be passed on the matrix of location by dismounting piece, can not deform for fixing dismounting piece and two sunk screws of location matrix; Therefore can unload dismounting piece by unclamping two sunk screws, because the thread segment of locking screw lower end is only fixed with the screwed hole of centre of dismounting piece, there is gap with matrix cylindrical recesses Nei Di center, location unthreaded hole in locking screw lower end, in the time unloading dismounting piece, locking screw is together taken out with dismounting piece by the remainder branch after cutting off; If the remainder of locking screw compared with large and cannot take out time, is changed dismounting piece and completes the connection of new locking screw in the screwed hole of centre internal strain of dismounting piece.
Beneficial effect
Fracture screw detachable mechanism of the present invention, simple in structure, easy to process, solution, when the closedown structure of traditional structure is subject to after cross shear, is difficult to take out the technological difficulties of locking screw remainder, has important application value.
Brief description of the drawings
Fig. 1 is the present invention's screw detachable mechanism cutaway view that ruptures;
Fig. 2 is that the present invention is ruptured and dismantled the cutaway view of piece in screw detachable mechanism;
Fig. 3 is that the present invention is ruptured and dismantled the top view of piece in screw detachable mechanism;
Fig. 4 is the rupture structure chart of locking screw in screw detachable mechanism of the present invention;
Fig. 5 is that the present invention is ruptured and located the structure chart of matrix in screw detachable mechanism;
Wherein, 1-dismounting piece; 2-locking screw; 3-sunk screw; 4-locates matrix.
Detailed description of the invention
Below in conjunction with drawings and Examples, content of the present invention is further described:
Embodiment
The shearing fracture screw of one of the present invention detachable mechanism, as shown in Figure 1, comprises dismounting piece 1, locking screw 2, sunk screw 3, location matrix 4;
As shown in Figure 4, locking screw 2 comprises lower end thread segment and upper end cylinder connection section, between the thread segment of locking screw 2 and cylinder connection section, has annular cut groove;
As shown in Figure 5, the upper surface of location matrix 4 has cylindrical recesses, matrix 4 cylindrical recesses Nei Di centers, location have the unthreaded hole that internal diameter is greater than locking screw 2 lower end thread segment external diameters, and matrix 4 unthreaded hole both sides, cylindrical recesses Nei Di center, location respectively have a screwed hole;
As shown in Figure 2,3, the profile of dismounting piece 1 matches with the interior shape of location matrix 4 upper surface cylindrical recesses, the center of dismounting piece 1 has the screwed hole of vertical perforate, and the internal thread of dismounting piece 1 screwed hole of centre and the external screw thread of locking screw 2 lower end thread segments match; The both sides of dismounting piece 1 screwed hole of centre have the counterbore of vertical perforate; The dismounting screwed hole of centre of piece 1 and the distributing position of both sides counterbore match with the pore size and distribution position of location matrix 4 cylindrical recesses Nei Di center unthreaded holes and both sides screwed hole respectively;
Dismounting piece 1 is placed in the cylindrical recesses of location matrix 4 upper surfaces, and the screwed hole of centre and the both sides counterbore that make to dismantle on piece 1 align with location matrix 4 cylindrical recesses Nei Di center unthreaded holes and both sides screwed hole respectively; Two sunk screw 3 front ends, through dismantling the counterbore of piece 1 both sides, being threaded with the screwed hole of both sides, the end in matrix 4 cylindrical recesses of location, make to dismantle piece 1 and fix with location matrix 4; The thread segment of locking screw 2 lower ends is threaded in the screwed hole of centre of dismounting piece 1, and insert in the matrix 4 cylindrical recesses Nei Di center unthreaded holes of location locking screw 2 lower ends; Matrix 4 lower ends, location and body sidewall are fixed, and cylinder connection section and the directed button of locking screw 2 upper ends are fixed.
The course of work
When rocket projectile transport, when locking screw 2 is in the time being subject to cross shear, this shearing force can be passed on the matrix 4 of location by dismounting piece 1, can not deform for fixing dismounting piece 1 and two sunk screws 3 of location matrix 4; Therefore can unload dismounting piece 1 by unclamping two sunk screws 3, because the thread segment of locking screw 2 lower ends is only fixed with the screwed hole of centre of dismounting piece 1, there is gap with location matrix 4 cylindrical recesses Nei Di center unthreaded holes in locking screw 2 lower ends, in the time unloading dismounting piece 1, locking screw 2 is together taken out with dismounting piece 1 by the remainder branch after cutting off; If the remainder of locking screw 2 compared with large and cannot take out time, is changed dismounting piece 1 and completes the connection of new locking screw 2 in the screwed hole of centre internal strain of dismounting piece 1.
Claims (1)
1. a shearing fracture screw detachable mechanism, is characterized in that: comprise dismounting piece, locking screw,Sunk screw, location matrix;
Locking screw comprises lower end thread segment and upper end cylinder connection section, the thread segment of locking screw and cylinderBetween body linkage section, have annular cut groove;
The upper surface of location matrix has cylindrical recesses, and matrix cylindrical recesses Nei Di center, location has internal diameterBe greater than the unthreaded hole of locking screw lower end thread segment external diameter, unthreaded hole both sides, matrix cylindrical recesses Nei Di center, locationRespectively have a screwed hole;
The profile of dismounting piece matches with the interior shape of location body upper surface cylindrical recesses, and open at dismounting Kuai centerThere is the screwed hole of vertical perforate, outside the internal thread of dismounting piece screwed hole of centre and locking screw lower end thread segmentScrew thread matches; The both sides of dismounting piece screwed hole of centre have the counterbore of vertical perforate; Dismounting Kuai center spiral shellThe distributing position of pit and both sides counterbore respectively with location matrix cylindrical recesses Nei Di center unthreaded hole and both sides spiral shellThe pore size and distribution position of pit matches;
Dismounting piece is placed in the cylindrical recesses of location body upper surface, make to dismantle screwed hole of centre on piece andBoth sides counterbore aligns with location matrix cylindrical recesses Nei Di center unthreaded hole and both sides screwed hole respectively; Two heavyScrew front end through the counterbore of dismounting piece both sides, with location matrix cylindrical recesses in the screwed hole spiral shell of both sides, the endLine connects, and makes to dismantle piece and fixes with location matrix; The thread segment of locking screw lower end is threaded in dismounting pieceScrewed hole of centre in, insert in the matrix cylindrical recesses Nei Di center unthreaded hole of location locking screw lower end; FixedMatrix lower end, position and body sidewall are fixed, and cylinder connection section and the directed button of locking screw upper end are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410753231.XA CN104406457B (en) | 2014-12-11 | 2014-12-11 | A kind of shearing fracture screw detachable mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410753231.XA CN104406457B (en) | 2014-12-11 | 2014-12-11 | A kind of shearing fracture screw detachable mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN104406457A CN104406457A (en) | 2015-03-11 |
| CN104406457B true CN104406457B (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410753231.XA Active CN104406457B (en) | 2014-12-11 | 2014-12-11 | A kind of shearing fracture screw detachable mechanism |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107115610B (en) * | 2017-06-09 | 2019-08-30 | 娄文忠 | A kind of fire extinguisher bomb jettison system of individual equipment and its method of jettisoninging |
| CN107137845B (en) * | 2017-06-09 | 2019-09-17 | 娄文忠 | A kind of integral type fire extinguisher bomb jettison system of individual equipment and method of jettisoninging |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4187759A (en) * | 1977-09-16 | 1980-02-12 | The United States Of America As Represented By The Secretary Of The Navy | Separation nut system |
| CN201810948U (en) * | 2010-09-26 | 2011-04-27 | 扬州诚德重工有限公司 | Improved T-shaped head foundation bolt |
| CN203645054U (en) * | 2013-11-21 | 2014-06-11 | 西安艾力特电子实业有限公司 | Installing and uninstalling mechanism for integrated product |
| CN203668966U (en) * | 2013-11-30 | 2014-06-25 | 重庆诚硕科技有限公司 | Foundation bolt set easy to disassemble |
| CN203939817U (en) * | 2014-07-09 | 2014-11-12 | 北京星网卫通科技开发有限公司 | A kind of detachable connecting device |
| CN204313710U (en) * | 2014-12-11 | 2015-05-06 | 晋西工业集团有限责任公司 | A kind of shearing fracture screw detachable mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2963803B1 (en) * | 2010-08-10 | 2017-02-10 | Astrium Sas | FIXING DEVICE WITH PYROTECHNIC LOCK |
-
2014
- 2014-12-11 CN CN201410753231.XA patent/CN104406457B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4187759A (en) * | 1977-09-16 | 1980-02-12 | The United States Of America As Represented By The Secretary Of The Navy | Separation nut system |
| CN201810948U (en) * | 2010-09-26 | 2011-04-27 | 扬州诚德重工有限公司 | Improved T-shaped head foundation bolt |
| CN203645054U (en) * | 2013-11-21 | 2014-06-11 | 西安艾力特电子实业有限公司 | Installing and uninstalling mechanism for integrated product |
| CN203668966U (en) * | 2013-11-30 | 2014-06-25 | 重庆诚硕科技有限公司 | Foundation bolt set easy to disassemble |
| CN203939817U (en) * | 2014-07-09 | 2014-11-12 | 北京星网卫通科技开发有限公司 | A kind of detachable connecting device |
| CN204313710U (en) * | 2014-12-11 | 2015-05-06 | 晋西工业集团有限责任公司 | A kind of shearing fracture screw detachable mechanism |
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| CN104406457A (en) | 2015-03-11 |
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