CN111946722A

CN111946722A - Pneumatic separation nut device

Info

Publication number: CN111946722A
Application number: CN202010754994.1A
Authority: CN
Inventors: 不公告发明人
Original assignee: Beijing Lingkong Tianxing Technology Co Ltd
Current assignee: Beijing Lingkong Tianxing Technology Co Ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2020-11-17

Abstract

The application discloses pneumatic separation nut device includes: the separation component is arranged in the inner cavity, and the spring is vertically arranged between the outer shell and the inner cavity; the inner cavity body can slide up and down in the outer shell; one end of the outer shell is axially provided with a first through hole communicated with the outside, one end of the inner cavity is provided with an air inlet part extending along the axial direction of the inner cavity, and the air inlet part penetrates into the first through hole; a striker is axially arranged in the air inlet part, one end of the striker extends into the inner cavity, the other end of the striker extends out of the air inlet part, and the position of the striker can be limited by the inner wall of the first through hole; the separation assembly comprises: the clamp is connected with one end of the inner cavity, which is relatively far away from the air inlet part, the conical plug is arranged in the inner cavity, which is relatively far away from one end of the clamp, and the melon-petal nut is axially arranged between the conical plug and the inner wall of the inner cavity. The device has the advantages of small impact response, repeated use, no pollution to the environment, short unlocking time and good synchronism.

Description

Pneumatic separation nut device

Technical Field

The present disclosure relates generally to the field of split nut technology, and more particularly, to a pneumatic split nut apparatus.

Background

After the spacecraft such as a satellite, a test aircraft and the like is launched into space by a rocket, satellite and rocket separation are needed, and in addition, after the rocket is launched and lifted off, multiple times of separation, such as interstage separation, booster separation, fairing separation and the like, are needed, so that the separation device plays an important role in the aerospace field, and compared with the common separation devices, the separation device comprises an explosive bolt, an explosive nut, a satellite separation ring and the like, and the separation device is almost all explosive in explosive work for unlocking.

Two types of break-away nuts that are more common in the prior art are the explosive break-away nut and the memory alloy break-away nut. The explosive separation nut utilizes high-pressure gas generated by explosive to push away an internal mechanism so as to achieve the aim of unlocking, and is characterized by short unlocking time and good synchronism, but has the defects of large impact, non-reusability and environmental pollution; the memory alloy separating nut drives the locking mechanism to unlock by utilizing the principle that the memory alloy can stretch under the condition of temperature change, and has the characteristics of small impact, no pollution, reusability and the like, but has the defects of long unlocking time and poor synchronism. Therefore, a separate nut with better overall performance is needed.

Disclosure of Invention

In view of the above-mentioned deficiencies or inadequacies in the prior art, it would be desirable to provide a pneumatic breakaway nut apparatus.

A pneumatic separation nut assembly, comprising: the separation component is arranged in the inner cavity, and the spring is vertically arranged between the outer shell and the inner cavity; the inner cavity body can slide up and down in the outer shell;

one end of the outer shell is axially provided with a first through hole communicated with the outside, one end of the inner cavity is provided with an air inlet part extending along the axial direction of the inner cavity, and the air inlet part penetrates into the first through hole; a second through hole communicated with the interior of the inner cavity is formed in the air inlet part, and the second through hole is communicated with the first through hole; a striker is axially arranged in the air inlet part, one end of the striker extends into the inner cavity, the other end of the striker extends out of the air inlet part, and the position of the striker can be limited by the inner wall of the first through hole;

the separation assembly includes: the clamping hoop is connected with one end of the inner cavity, which is relatively far away from the air inlet part, the conical plug is arranged in the inner cavity, which is relatively far away from one end of the clamping hoop, and the melon-petal nut is axially arranged between the conical plug and the inner wall of the inner cavity; the melon-petal nut is internally provided with a mounting hole which can be matched with the screw 20; the inner side wall of the clamp is provided with a trapezoidal boss, the outer side wall of the melon-petal nut is provided with a trapezoidal groove matched with the trapezoidal boss for use, and the clamp is sleeved outside the melon-petal nut; a third through hole communicated with the second through hole is formed in the conical plug, and the firing pin penetrates through the conical plug and is in contact with the bottom wall of the screw 20; the contact surface slope setting of toper stopper and melon lamella nut, melon lamella nut can be along radial expansion or shrink, the toper stopper can slide from top to bottom in the cavity.

According to the technical scheme provided by the embodiment of the application, an air inlet through hole is formed in one end, far away from the conical plug, of the firing pin.

According to the technical scheme provided by the embodiment of the application, the device further comprises a buffer component; the buffer assembly comprises a buffer block arranged in the first through hole and a buffer spring connected with the buffer block; one end of the buffer spring is connected with the firing pin.

According to the technical scheme that this application embodiment provided, the one end that is close to first through-hole relatively on the shell body is equipped with the supplementary inlet port of several, supplementary inlet port and first through-hole intercommunication.

According to the technical scheme provided by the embodiment of the application, a base is fixedly connected to one end, far away from the spring, of the outer shell, a fourth through hole capable of containing a screw 20 is formed in the base, the fourth through hole is communicated with the mounting hole, and a first inclined plane is arranged on the edge of the fourth through hole in a surrounding mode; the contact surface of melon lamella nut and base is equipped with the second inclined plane that uses with first inclined plane cooperation.

According to the technical scheme provided by the embodiment of the application, the melon lamella nut comprises at least two melon lamella threads which are separately arranged; the melon-petal spiral teeth can be separated or combined along the radial direction.

According to the technical scheme provided by the embodiment of the application, the base is detachably connected with the outer shell; at least two butt joint holes are symmetrically arranged on the base.

According to the technical scheme provided by the embodiment of the application, the angle of the inclined surface of the conical plug is larger than that of the friction angle.

According to the technical scheme provided by the embodiment of the application, the angle of the inclined surface of the first inclined surface is larger than that of the friction angle.

According to the technical scheme provided by the embodiment of the application, a sealing ring is arranged between the outer wall of the air inlet part and the inner wall of the first through hole; a sealing ring is arranged between the outer wall of the firing pin and the inner wall of the conical plug; and a sealing ring is arranged between the inner wall of the inner cavity and the outer wall of the conical plug.

In summary, the technical scheme of the application can rapidly unlock and can be repeatedly used by arranging the slidable inner cavity and the separation component; when the device is used, a screw is matched and connected in the mounting hole in an initial state, firstly, high-pressure gas is introduced into the first through hole and enters the second through hole and the third through hole, and the high-pressure gas can enable the striker to move upwards, the inner cavity to slide downwards and the conical plug to slide upwards; the striker pushes the screw 20 upwards, the inner cavity drives the hoop to move downwards, the trapezoidal boss of the hoop gradually moves to be clamped with the trapezoidal groove of the melon-petal nut along with the movement of the striker, and the melon-petal nut expands and opens outwards along the inclined plane in contact with the conical plug in the radial direction, so that the screw is pushed to the outside of the melon-petal nut and is released out, and the unlocking function is realized; after the separation nut is unlocked, high-pressure gas is released along with the screw, the firing pin returns to the original position under the action of gravity, the spring enables the inner cavity to move upwards, and the conical plug slides downwards under the action of gravity; the inner cavity drives the hoop to move upwards, the melon-petal nut slides downwards along with the conical plug, the trapezoidal boss and the trapezoidal groove are gradually separated, and finally the inner cavity and the melon-petal nut can be restored to the initial state, so that the effect of automatic resetting and locking is achieved; the device has the advantages of small impact response, repeated use, no pollution to the environment, short unlocking time and good synchronism.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic structural diagram of the present application;

fig. 2 is a partially enlarged schematic structural diagram of the present application.

Reference numbers in the figures: 1. an outer housing; 2. an inner cavity; 3. a spring; 4. an air intake portion; 5. a striker; 6. clamping a hoop; 7. a conical plug; 8. melon petal nuts; 9. a trapezoidal boss; 10. a trapezoidal groove; 11. mounting holes; 12. a buffer block; 13. a buffer spring; 14. an auxiliary air intake; 15. a base; 16. a first inclined plane; 17. an air inlet through hole; 18. a butt joint hole; 19. and (5) sealing rings.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example one

A pneumatic separation nut assembly, comprising: the device comprises an outer shell 1 with a hollow interior, an inner cavity 2 arranged in the shell, a separation assembly arranged in the inner cavity 2 and a spring 3 vertically arranged between the outer shell 1 and the inner cavity 2; the inner cavity 2 can slide up and down in the outer shell 1;

one end of the outer shell 1 is axially provided with a first through hole communicated with the outside, one end of the inner cavity 2 is provided with an air inlet part 4 extending along the axial direction of the inner cavity, and the air inlet part 4 penetrates into the first through hole; a second through hole communicated with the interior of the inner cavity 2 is formed in the air inlet part 4 and communicated with the first through hole; a striker 5 is axially arranged in the air inlet part 4, one end of the striker 5 extends into the inner cavity 2, the other end of the striker extends out of the air inlet part 4, and the position of the striker 5 can be limited by the inner wall of the first through hole;

the separation assembly includes: the air inlet part is characterized by comprising a hoop 6 connected with one end of the inner cavity 2 relatively far away from the air inlet part 4, a conical plug 7 arranged in the inner cavity 2 relatively far away from one end of the hoop 6, and a melon-petal nut 8 axially arranged between the conical plug 7 and the inner wall of the inner cavity 2; the melon-petal nut 8 is internally provided with a mounting hole 11 which can be matched with a screw 20; the inner side wall of the clamp 6 is provided with a trapezoidal boss 9, the outer side wall of the melon-petal nut 8 is provided with a trapezoidal groove 10 matched with the trapezoidal boss 9 for use, and the clamp 6 is sleeved outside the melon-petal nut 8; a third through hole communicated with the second through hole is formed in the conical plug 7, and the firing pin 5 penetrates through the conical plug 7 and is in contact with the bottom wall of the screw 20; the contact surface slope setting with melon lamella nut 8 of toper stopper 7, melon lamella nut 8 can be along radial expansion or shrink, toper stopper 7 can slide from top to bottom in inner chamber body 2.

When the device is used, the screw 20 is matched and connected in the mounting hole 11 of the melon-petal nut 8 in an initial state, as shown in fig. 1, high-pressure gas is introduced into a first through hole on the outer shell 1, the high-pressure gas enters a second through hole of the air inlet part 4 and a third through hole of the conical plug 7 through the first through hole, and the high-pressure gas can enable the striker 5 to move upwards, enable the inner cavity 2 to slide downwards to extrude the spring 3 and push the conical plug 7 to slide upwards; the striker 5 pushes the screw 20 in the melon-petal nut 8 upwards, the inner cavity 2 drives the hoop 6 to move downwards, the bolt 20 is pushed by the striker 5, meanwhile, the trapezoidal boss 9 of the hoop 6 gradually moves to be clamped with the trapezoidal groove 10 of the melon-petal nut 8, the melon-petal nut 8 expands and opens along the inclined plane contacting with the conical plug 7 radially outwards, the screw 20 is pushed to the outside of the melon-petal nut 8 and is released, and the unlocking function is realized;

after the separation nut is unlocked, high-pressure gas is released along with the screw 20, the striker 5 returns to the original position under the action of gravity, the inner cavity 2 moves upwards under the action of the acting force of the spring 3, and the conical plug 7 slides downwards under the action of gravity; interior cavity 2 drives clamp 6 upwards, and melon lamella nut 8 slides downwards along with toper stopper 7, and trapezoidal boss 9 and trapezoidal recess 10 separate gradually, and cavity 2 and melon lamella nut 8 can both resume initial condition in the end to reach the effect of automatic re-setting locking, also prepare for unblock next time. The melon-petal nut 8 is in a separated state, and when the trapezoidal boss 9 and the trapezoidal groove 10 are separated to be staggered, the vacant space in the inner cavity 2 is reduced, the melon-petal nut 8 can be locked, and therefore the screw 20 can be locked in the melon-petal nut 8; when the trapezoid boss 9 of the hoop 6 is just clamped with the trapezoid groove 10 of the melon-petal nut 8, the vacant space in the inner cavity 2 is enlarged, and the melon-petal nut 8 can be radially dispersed; the shape of the first through hole limits the position of the striker 5, so that the striker naturally rides on the inner wall of the first through hole under the action of gravity and moves upwards when being impacted by high-pressure gas. In conclusion, the device has the advantages of small impact response, repeated use, no pollution to the environment, short unlocking time and good synchronism.

In order to further optimize the above technical solution, the technical solution is preferably further provided with the following improvements: an air inlet through hole 17 is formed in one end, far away from the conical plug 7, of the firing pin 5. When high-pressure gas is introduced into the first through hole, the gas inlet through hole 17 enables the gas flow to enter the gap between the firing pin 5 and the first through hole more smoothly, and enables the high-pressure gas to enter the third through hole of the conical plug 7 smoothly, so that acting force is applied to the conical plug 7.

In order to further optimize the above technical solution, the technical solution is preferably further provided with the following improvements: the buffer component is also included; the buffer assembly comprises a buffer block 12 arranged in the first through hole and a buffer spring 13 connected with the buffer block 12; one end of the buffer spring 13 is connected to the striker 5. As shown in fig. 2, when the first through hole is filled with the high-pressure gas, the buffer assembly can control the response time more precisely; high-pressure gas extrudes the buffer block 12, the buffer block 12 extrudes the buffer spring 13 and then contacts the striker 5, the striker 5 moves upwards under the simultaneous action of the buffer block 12 and the high-pressure gas, and the unlocking time can be changed in a small range by changing the buffer springs 13 with different elastic forces, so that different conditions can be met.

In order to further optimize the above technical solution, the technical solution is preferably further provided with the following improvements: a plurality of auxiliary air inlets 14 are arranged at one end of the outer shell 1, which is relatively close to the first through hole, and the auxiliary air inlets 14 are communicated with the first through hole. As shown in fig. 2, when high pressure gas is charged from the first through hole, the auxiliary intake holes 14 can increase the flow rate of the high pressure gas, ensuring an impact effect.

In order to further optimize the above technical solution, the technical solution is preferably further provided with the following improvements: a base 15 is fixedly connected to one end, relatively far away from the spring 3, of the outer shell 1, a fourth through hole capable of containing a screw 20 is formed in the base 15, the fourth through hole is communicated with the mounting hole 11, and a first inclined plane 16 is annularly arranged on the edge of the fourth through hole; the contact surface of melon lamella nut 8 and base 15 is equipped with the second inclined plane that uses with the cooperation of first inclined plane 16.

As shown in fig. 1, when the melon-petal nut 8 is unlocked, the melon-petal nut 8 can slide and expand along the first inclined surface 16 radially outwards, and the screw 20 is released from the melon-petal nut 8 and the fourth through hole.

In order to further optimize the above technical solution, the technical solution is preferably further provided with the following improvements: the melon segment nut 8 comprises at least two melon segment screw teeth which are separately arranged; the melon-petal spiral teeth can be separated or combined along the radial direction. Separable melon lamella thread passes through clamp 6 spacing, and has the screw thread that can join in marriage with screw 20 and join in marriage on its inner wall, can lock screw 20 during the mergence, can release screw 20 during the separation.

In order to further optimize the above technical solution, the technical solution is preferably further provided with the following improvements: the base 15 is detachably connected with the outer shell 1; at least two butt joint holes 18 are symmetrically arranged on the base 15. In this embodiment, the base 15 can be connected to the outer casing 1 through a bolt, and the docking hole 18 can facilitate the base 15 to mount the device on other equipment through a bolt.

In order to further optimize the above technical solution, the technical solution is preferably further provided with the following improvements: the angle of the inclined surface of the conical plug 7 is greater than the angle of the friction angle. The angle that sets up on the toper stopper 7 is greater than the inclined plane of the angle of friction angle, and melon lamella nut 8 can be followed it and slided the separation to both sides when guaranteeing the unblock.

In order to further optimize the above technical solution, the technical solution is preferably further provided with the following improvements: the first inclined surface 16 has an inclined surface angle greater than the angle of the friction angle. Set up the first inclined plane 16 that the angle is greater than the angle of friction angle, melon lamella nut 8 is thought both sides sliding separation along it when guaranteeing the unblock.

In order to further optimize the above technical solution, the technical solution is preferably further provided with the following improvements: a sealing ring 19 is arranged between the outer wall of the air inlet part 4 and the inner wall of the first through hole; a sealing ring 19 is arranged between the outer wall of the firing pin 5 and the inner wall of the conical plug 7; and a sealing ring 19 is arranged between the inner wall of the inner cavity 2 and the outer wall of the conical plug 7. A sealing ring 19 arranged between the outer wall of the air inlet part 4 and the inner wall of the first through hole and a sealing ring 19 arranged between the outer wall of the firing pin 5 and the inner wall of the conical plug 7 can ensure that the inner air cavity of the firing pin 5 is in a sealing state when the firing pin moves; the sealing ring 19 arranged between the inner wall of the inner cavity 2 and the outer wall of the conical plug 7 can ensure that the conical plug 7 and the inner cavity 2 are in a sealing state when moving.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. The utility model provides a pneumatic separation nut device which characterized in that: the method comprises the following steps: the device comprises an outer shell (1) with a hollow interior, an inner cavity (2) arranged in the shell, a separating component arranged in the inner cavity (2), and a spring (3) vertically arranged between the outer shell (1) and the inner cavity (2); the inner cavity (2) can slide up and down in the outer shell (1);

one end of the outer shell (1) is axially provided with a first through hole communicated with the outside, one end of the inner cavity (2) is provided with an air inlet part (4) extending along the axial direction of the inner cavity, and the air inlet part (4) penetrates into the first through hole; a second through hole communicated with the inside of the inner cavity (2) is formed in the air inlet part (4), and the second through hole is communicated with the first through hole; a striker (5) is axially arranged in the air inlet part (4), one end of the striker (5) extends into the inner cavity (2), the other end of the striker extends out of the air inlet part (4), and the inner wall of the first through hole can limit the position of the striker (5);

the separation assembly includes: the air inlet structure comprises a hoop (6) connected with one end of the inner cavity (2) relatively far away from the air inlet part (4), a conical plug (7) arranged in the inner cavity (2) relatively far away from one end of the hoop (6), and a melon-petal nut (8) axially arranged between the conical plug (7) and the inner wall of the inner cavity (2); a mounting hole (11) capable of being matched with a screw (20) is formed in the melon-petal nut (8); the inner side wall of the clamp (6) is provided with a trapezoidal boss (9), the outer side wall of the melon-petal nut (8) is provided with a trapezoidal groove (10) matched with the trapezoidal boss (9) for use, and the clamp (6) is sleeved outside the melon-petal nut (8); a third through hole communicated with the second through hole is formed in the conical plug (7), and the firing pin (5) penetrates through the conical plug (7) and is in contact with the bottom wall of the screw (20); the contact surface slope setting of toper stopper (7) and melon lamella nut (8), melon lamella nut (8) can be along radially expanding or contracting, toper stopper (7) can slide from top to bottom in inner chamber body (2).

2. A pneumatic separation nut assembly as defined in claim 1, further comprising: and an air inlet through hole (17) is formed in one end, far away from the conical plug (7), of the firing pin (5).

3. A pneumatic separation nut assembly as defined in claim 1, further comprising: the buffer component is also included; the buffer assembly comprises a buffer block (12) arranged in the first through hole and a buffer spring (13) connected with the buffer block (12); one end of the buffer spring (13) is connected with the firing pin (5).

4. A pneumatic separation nut assembly as defined in claim 1, further comprising: a plurality of auxiliary air inlets (14) are arranged at one end, relatively close to the first through hole, of the outer shell (1), and the auxiliary air inlets (14) are communicated with the first through hole.

5. A pneumatic separation nut assembly as defined in claim 1, further comprising: a base (15) is fixedly connected to one end, far away from the spring (3), of the outer shell (1), a fourth through hole capable of containing a screw (20) is formed in the base (15), the fourth through hole is communicated with the mounting hole (11), and a first inclined plane (16) is arranged on the edge of the fourth through hole in a surrounding mode; the contact surface of melon lamella nut (8) and base (15) is equipped with the second inclined plane that uses with first inclined plane (16) cooperation.

6. A pneumatic separation nut assembly as defined in claim 1, further comprising: the melon segment nut (8) comprises at least two melon segment screw teeth which are separately arranged; the melon-petal spiral teeth can be separated or combined along the radial direction.

7. A pneumatic separation nut assembly as defined in claim 4 in which: the base (15) is detachably connected with the outer shell (1); the base (15) is symmetrically provided with at least two butt joint holes (18).

8. A pneumatic separation nut assembly as defined in claim 1, further comprising: the angle of the inclined surface of the conical plug (7) is larger than that of the friction angle.

9. A pneumatic separation nut assembly as defined in claim 1, further comprising: the first inclined surface (16) has an inclined surface angle greater than the angle of the friction angle.

10. A pneumatic separation nut assembly as defined in claim 1, further comprising: a sealing ring (19) is arranged between the outer wall of the air inlet part (4) and the inner wall of the first through hole; a sealing ring (19) is arranged between the outer wall of the firing pin (5) and the inner wall of the conical plug (7); and a sealing ring (19) is arranged between the inner wall of the inner cavity (2) and the outer wall of the conical plug (7).