CN203687786U - Catcher for radial shrinking type split nut - Google Patents
Catcher for radial shrinking type split nut Download PDFInfo
- Publication number
- CN203687786U CN203687786U CN201320759888.8U CN201320759888U CN203687786U CN 203687786 U CN203687786 U CN 203687786U CN 201320759888 U CN201320759888 U CN 201320759888U CN 203687786 U CN203687786 U CN 203687786U
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- China
- Prior art keywords
- piston rod
- spring
- collar
- distinguish nut
- nut
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- Expired - Lifetime
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- 230000008602 contraction Effects 0.000 claims description 16
- 238000000926 separation method Methods 0.000 abstract description 7
- 239000002360 explosive Substances 0.000 abstract 1
- 230000000977 initiatory effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
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Abstract
The utility model provides a catcher for a radial shrinking type split nut, and relates to a separation mechanism. The catcher comprises a sleeve ring, a spring, a housing and a piston rod, wherein the piston rod penetrates through the interior of the sleeve ring; the piston rod moves along the axial direction; the piston rod is matched with a small-diameter hole in a stepped hole; the end face where one end of a large-diameter hole in the stepped hole is located is an inclined plane; the inner wall of the split nut is provided with a boss; prior to the axial movement of the piston rod, the boss of the split nut is axially matched with the outer wall of the piston rod; the external circular surface of the split nut is connected with the inner wall of the hosing in a thread way; the spring is encircled on the external circumference surface of the piston rod; one end of the spring resists against the piston rod; the other end of the spring resists against the sleeve ring; one end where the inclined plane of the sleeve ring is located is axially fit with one end of the split nut; an annular groove is formed in the external circumference surface of the piston rod. The catcher is light in weight, small in size, capable of bearing required loads caused by greater vibration, compact and the like, and higher in catching reliability, thereby being particularly applicable for the catching of the split nut in a connection thrust type initiating explosive mechanism.
Description
Technical field
The utility model relates to separating mechanism, particularly radial contraction formula distinguish nut.
Background technology
Adopt the point type separator of distinguish nut to have a wide range of applications in bullet rocket body separating mechanism, as separation nut be connected push type pyrotechnical devices, with respect to the former, the latter has connection, release and the function that separates momentum is provided, and is usually used in the stage separation system of space launch vehicle.
For only having the separation nut of connection and unlocking function, because needs provide separation momentum, the piston rod that connects push type pyrotechnical devices must have certain movement travel.Separate momentum function because separation nut does not possess to provide, its distinguish nut can be placed in a housing, and before and after separation nut work, distinguish nut is all stayed in housing, is only radially having certain outside motion, thus the release of the bolt that achieves a butt joint.For connecting push type pyrotechnical devices, its piston rod need to have certain movement travel, in order to realize this movement travel, external envelope space while simultaneously as far as possible reducing to connect the installation of push type pyrotechnical devices, distinguish nut is wanted radial contraction and must be moved together along with piston rod, this just makes the problem of catching and do not become fifth wheel that how to realize distinguish nut highlight, and does not solve the structure that distinguish nut is caught in prior art.
Utility model content
Technology of the present utility model is dealt with problems and is: overcome the deficiencies in the prior art, a kind of grabber for radial contraction formula distinguish nut is provided, be easy to install, catch reliably, be convenient to realize.
Technical solution of the present utility model is: a kind of grabber for radial contraction formula distinguish nut, comprises the collar, spring, shell and piston rod; The described collar is the hollow annular structure that inside has stepped hole, and piston rod passes from collar inside, and piston rod moves vertically; Piston rod coordinates with the small diameter bore in described stepped hole; The difference of the radius of the large diameter hole in stepped hole and the radius of piston rod is greater than the outer wall thickness of distinguish nut, and the end face at the place, large diameter hole one end in stepped hole is inclined-plane; On the inwall of distinguish nut, have boss, before piston rod moves axially, the boss of distinguish nut axially coordinates with the outer wall of piston rod; The periphery of distinguish nut is connected with the inner thread of shell, on the outer circumference surface of piston rod, have piston rod spring groove, ring spring is around in the outer circumference surface of piston rod, and piston rod spring groove is withstood in one end of spring, the other end withstand small diameter bore on the collar outer face at one end; The one end at collar ramp place and one end of distinguish nut are axially being adjacent to, for the power of radial contraction is provided for distinguish nut in the time that piston moves axially; On the outer circumference surface of piston rod, have annular groove, after piston rod moves axially, under the effect of radial contraction power, the boss of distinguish nut falls in annular groove, realizes distinguish nut and catches.
On the described collar, small diameter bore at one end has collar spring groove, and piston rod spring groove is withstood in one end of spring, and the other end withstands collar spring groove.
The inclination angle on described inclined-plane is 45 °.
The utility model compared with prior art beneficial effect is: the utility model has carried out the structural design of grabber for radial contraction formula distinguish nut, make full use of the structure of relevant spare part, have lightweight, volume is little, can bear the requirement of the load such as larger vibration, impact, and there is the higher reliability of catching, be specially adapted to connect catching of distinguish nut in push type pyrotechnical devices; The utility model arresting structure simple in structure, be easy to install, there is stronger practicality, can play rocket body separating mechanism and civilian aspect have a wide range of applications.
Brief description of the drawings
Fig. 1 is the initial installment state schematic diagram of distinguish nut of the present utility model;
Fig. 2 is the critical trapped state schematic diagram of distinguish nut of the present utility model;
Fig. 3 is the complete trapped state schematic diagram of distinguish nut of the present utility model;
Fig. 4 is the profile of the collar in the utility model;
Fig. 5 is the top view of distinguish nut in the utility model;
Fig. 6 be in Fig. 5 A-A to cutaway view;
Fig. 7 is the enlarged drawing of the collar and distinguish nut contact position in the utility model;
Fig. 8 is the part sectioned view of piston rod in the utility model.
Detailed description of the invention
As shown in Figure 1, the utility model comprises the collar 1, spring 2, shell 3 and piston rod 4.As shown in Figure 8, piston rod 4 has annular groove 13 to piston rod 4 on periphery, so it has largest outer diameter face 15 and smaller diameter face 16, the outer portion of piston rod 4 igniter drives and moves vertically.The utility model is used for catching radial contraction formula distinguish nut 5, and the structure of this kind of distinguish nut 5 is as shown in Fig. 5-6, and from top view, its shape is similar to and is divided into some lobes and with externally threaded nut, is the example of three lobes shown in figure; From A-A to cutaway view, it has interconnective outer wall and boss 11, the axial height of boss 11 is less than the height of outer wall.Distinguish nut 5 is at large obtain before, its boss 11 coordinates with the largest outer diameter face of piston rod 4; After distinguish nut 5 is caught completely, its outer wall coordinates with the largest outer diameter face 15 of piston rod 4, and its boss 11 coordinates with the smaller diameter face 16 of piston rod 4, realizes radial contraction.As shown in Figure 4, for inside has the hollow annular structure of stepped hole 6, on the collar 1, small diameter bore 8 at one end has collar spring groove 9 to the collar 1, for limiting the end position of spring 2.
As shown in Figure 1, piston rod 4 passes from the collar 1 inside; Piston rod 4 coordinates with the small diameter bore 8 in stepped hole 6; The difference of the radius of the radius of the large diameter hole 7 in stepped hole 6 and the largest outer diameter face of piston rod 4 is greater than the outer wall thickness of distinguish nut 5.The object of design, can find out in conjunction with Fig. 2-3 like this, and after catching completely, the outer wall of distinguish nut 5 falls between piston rod 4 and the large diameter hole 7 of the collar 1 completely, so the size of the large diameter hole 7 of the collar 1 must be carried out appropriate design.
As Figure 1 and Figure 4, the outer face at large diameter hole 7 places, one end in stepped hole 6 is inclined-plane 10.On the inwall of distinguish nut 5, have boss 11, before piston rod moves axially, the boss 11 of distinguish nut 5 axially coordinates with the outer wall of the largest outer diameter face 15 of piston rod 4; The periphery of distinguish nut 5 is threaded, and realizes and being threaded with the inwall of shell 3, as shown in Figure 1, has piston rod spring groove 14 on the outer circumference surface of piston rod 4.Spring 2 is surrounded on the outer circumference surface of piston rod 4, and spring 2 is all in compressive state before grabber work, in the course of work and after work, and this can and select appropriate size spring 2 to realize by structural design.Piston rod spring groove 14 is withstood in one end of spring 2, and the other end withstands collar spring groove 9, and the two ends of spring 2 are positioned at all the time this two spring 2 grooves before and after grabber work, and the end position of spring 2 is well fixed, and improves the reliability of device.The maximum length that can reach before and after the grabber work for spring 2 due to spring 2 length after work, therefore according to the position of distinguish nut 5 after work, be that distinguish nut 5 boss 11 upper surfaces contact with piston rod 4 annular groove 13 upper surfaces, measure the distance of piston rod 4 annular groove 13 upper surfaces to piston rod spring groove 14 bottom surfaces, this is the critical value of spring 2 free heights, and spring 2 free heights of selecting should be greater than distance L.The collar 1 one end at ramp 10 places and one end 12 of distinguish nut 5 are axially being adjacent to, for the power of radial contraction is provided for distinguish nut 5 in the time that piston rod moves axially.As Figure 2-3, have annular groove 13 on the outer circumference surface of piston rod 4, after piston rod 4 moves axially, piston rod 4 shown in figure is for moving up, and under the effect of radial contraction power, the boss 11 of distinguish nut 5 falls in annular groove 13.
Shown in Fig. 1, installation steps of the present utility model are:
The first step: spring 2 is placed in piston rod spring groove 14, and places the collar 1 on spring 2, and spring 2 upper ends should be in the collar spring groove 9 of the collar 1;
Second step: distinguish nut 5 and shell 3 and piston rod 4 are installed together, the inclined-plane 10 of distinguish nut 5 and the end face of the collar 1 are adjacent to, so just completed the installation of grabber.
As shown in Figure 7, the inclination alpha on inclined-plane 10 is 45 °, the effective balance of this angle the collar 1 give distinguish nut 5 straight up with the inside power of level, guarantee the power of the rigidity of structure and distinguish nut 5 radial contraction: if inclination alpha is greater than 45 °, the inside power of level is inadequate, and distinguish nut 5 is difficult for inwardly shrinking; If inclination alpha is less than 45 °, can there is wedge angle in inclined-plane 10, structural strength and poor rigidity, inclined-plane 10 yielding and damage.
The course of work of the present utility model is: piston rod 4 moves to after certain stroke, the 5 radial constraint releases of distinguish nut, under the radial component effect of the collar 1, the inside radial motion of distinguish nut 5, and enter in annular groove 13, the collar 1 is under the lasting drive of spring 2 and piston rod 4, and the collar 1 entangles distinguish nut 5 completely, and distinguish nut 5 is entered in annular groove 13 completely, just complete catching of distinguish nut 5.
The content not being described in detail in the utility model description belongs to those skilled in the art's known technology.
Claims (3)
1. for a grabber for radial contraction formula distinguish nut, it is characterized in that: comprise the collar (1), spring (2), shell (3) and piston rod (4); The described collar (1) has the hollow annular structure of stepped hole (6) for inside, and piston rod (4) passes from the collar (1) inside, and piston rod (4) moves vertically; Piston rod (4) coordinates with the small diameter bore (8) in described stepped hole (6); The difference of the radius of the large diameter hole (7) in stepped hole (6) and the radius of piston rod (4) is greater than the outer wall thickness of distinguish nut (5), and the end face at large diameter hole (7) place, one end in stepped hole (6) is inclined-plane (10); On the inwall of distinguish nut (5), have boss (11), before piston rod moves axially, the boss (11) of distinguish nut (5) axially coordinates with the outer wall of piston rod (4); The periphery of distinguish nut (5) is connected with the inner thread of shell (3), on the outer circumference surface of piston rod (4), have piston rod spring groove (14), spring (2) is surrounded on the outer circumference surface of piston rod (4), piston rod spring groove (14) is withstood in one end of spring (2), the other end withstand the upper small diameter bore (8) of the collar (1) outer face at one end; The one end at the collar (1) ramp (10) place and one end (12) of distinguish nut (5) are axially being adjacent to, and have annular groove (13) on the outer circumference surface of piston rod (4); After piston rod (4) moves axially, the boss (11) of distinguish nut (5) falls in annular groove (13), realizes distinguish nut (5) and catches.
2. a kind of grabber for radial contraction formula distinguish nut according to claim 1, it is characterized in that: the upper small diameter bore (8) of the described collar (1) at one end has collar spring groove (9), piston rod spring groove (14) is withstood in one end of spring (2), and the other end withstands collar spring groove (9).
3. a kind of grabber for radial contraction formula distinguish nut according to claim 1, is characterized in that: the inclination angle of described inclined-plane (10) is 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320759888.8U CN203687786U (en) | 2013-11-26 | 2013-11-26 | Catcher for radial shrinking type split nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320759888.8U CN203687786U (en) | 2013-11-26 | 2013-11-26 | Catcher for radial shrinking type split nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203687786U true CN203687786U (en) | 2014-07-02 |
Family
ID=51009673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320759888.8U Expired - Lifetime CN203687786U (en) | 2013-11-26 | 2013-11-26 | Catcher for radial shrinking type split nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203687786U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973079A (en) * | 2016-05-05 | 2016-09-28 | 北京理工大学 | Electromagnetic type separation device |
| CN112102969A (en) * | 2020-09-21 | 2020-12-18 | 四川大学 | Reactor driving device and method capable of self-locking and releasing |
| CN112124611A (en) * | 2020-08-22 | 2020-12-25 | 西安科为实业发展有限责任公司 | Shelling and separating system and method for cylindrical jet type folding wing aircraft |
-
2013
- 2013-11-26 CN CN201320759888.8U patent/CN203687786U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973079A (en) * | 2016-05-05 | 2016-09-28 | 北京理工大学 | Electromagnetic type separation device |
| CN112124611A (en) * | 2020-08-22 | 2020-12-25 | 西安科为实业发展有限责任公司 | Shelling and separating system and method for cylindrical jet type folding wing aircraft |
| CN112124611B (en) * | 2020-08-22 | 2023-11-28 | 西安科为实业发展有限责任公司 | Shelling separation system and method for cylindrical jet type folding wing aircraft |
| CN112102969A (en) * | 2020-09-21 | 2020-12-18 | 四川大学 | Reactor driving device and method capable of self-locking and releasing |
| CN112102969B (en) * | 2020-09-21 | 2021-10-15 | 四川大学 | Reactor driving device and method capable of self-locking and releasing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |
|
| CX01 | Expiry of patent term |