CN114151502A

CN114151502A - Take low separation buffer of impact of self-locking function

Info

Publication number: CN114151502A
Application number: CN202111410164.8A
Authority: CN
Inventors: 卢迪; 肖任勤; 鲍永定; 朱璇; 王博哲; 李智; 李志杰; 杨攀
Original assignee: General Designing Institute of Hubei Space Technology Academy
Current assignee: General Designing Institute of Hubei Space Technology Academy
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-03-08
Anticipated expiration: 2041-11-18
Also published as: CN114151502B

Abstract

The invention relates to the technical field of rocket separation, and discloses a separation buffer device with a self-locking function and low impact, which comprises: the buffer box is internally provided with a cavity, and one surface of the buffer box is provided with a guide hole; one end of the connecting nut extends out of the buffer box and is connected with the explosive bolt, and the other end part of the connecting nut extends into the guide hole; the impact limiting assembly comprises a plurality of clamping plates, each clamping plate extends out of the buffer box from the edge of the guide hole, and the extending end of each clamping plate inclines towards the axis of the guide hole; when the explosive bolt explodes, the connecting nut partially extends out of the guide hole and is in interference fit with all the clamping plates. The invention has the following advantages and effects: through the cage structure of the similar claw shape that a plurality of cardboard formed, after the explosion bolt explosion, coupling nut receives to strike and dashes out from the guiding hole of buffering box to the striking is in the cage structure that the cardboard formed, makes interference fit between cardboard and the coupling nut, finally withholds coupling nut, prevents that coupling nut from falling back.

Description

Take low separation buffer of impact of self-locking function

Technical Field

The application relates to the technical field of rocket separation, in particular to a low-impact separation buffer device with a self-locking function.

Background

At present, the conventional rocket separating surface uses point-type connection, namely, explosive bolts are used for connecting and separating each subset of the rocket, because the radial size of the separating surface is larger, if the connecting strength and rigidity of the separating surface are ensured, the number of the explosive bolts is required to be increased, and along with the increase of the explosive bolts, the impact on the separating surface is also increased.

The shock wave generated by the work of the separation bolt during the point type connection is transmitted to the separation body through the separation surface and the separation bolt head, huge local pressure is generated at the installation structure, and the shock wave is transmitted on the structure of the separation body in the form of high-magnitude and high-frequency response stress waves.

Among the current technical scheme, mainly realize the buffering through sponge rubber pad and metal damping pad, the buffering effect is not obvious, and the nut of connecting the explosion bolt simultaneously and the screw rod of explosion bolt fly shooting easily in whole isolating construction, have formed complicated changeable impact, destroy other rocket structures simultaneously easily.

Disclosure of Invention

To the defects that exist in the prior art, the purpose of the application is to provide a separation buffer device with a self-locking function and low impact to solve the problems in the related art.

In order to achieve the above purposes, on one hand, the technical scheme is as follows:

the application provides a take low separation buffer who strikes of self-locking function includes:

the buffer box is internally provided with a cavity, and one surface of the buffer box is provided with a guide hole;

one end of the connecting nut extends out of the buffer box and is connected with the explosion bolt, a flange ring for preventing the explosion bolt from falling off is sleeved on the outer wall adjacent to the end of the connecting nut, the other end part of the connecting nut extends into the guide hole, and the flange ring is abutted against the inner wall, opposite to the guide hole, in the buffer box;

the impact limiting assembly comprises a plurality of clamping plates, each clamping plate extends out of the buffer box from the edge of the guide hole, and the extending end of each clamping plate inclines towards the axis of the guide hole;

when the explosive bolt explodes, the connecting nut partially extends out of the guide hole and is in interference fit with all the clamping plates.

Preferably, the method further comprises the following steps:

and the deformation buffer piece is arranged in the inner cavity of the buffer box, one end of the deformation buffer piece is abutted against the flange ring, and the other end of the deformation buffer piece is abutted against the inner wall surface of the buffer box, which is provided with the guide hole.

Preferably, the deformation buffer component is in an annular step shape and is reduced step by step, wherein the largest step abuts against the inner wall surface of the buffer box provided with the guide hole, and the smallest step abuts against the flange ring.

Preferably, the outer wall of the connecting nut protrudes outwards to form a plurality of ratchet rings, and the ratchet rings are arranged along the axial direction of the connecting nut;

the impact limiting assembly further comprises:

and the position locking piece is arranged at the edge of the guide hole and is abutted with the ratchet ring after the connecting nut partially extends out of the guide hole.

Preferably, the position locking member is a check ring, and the inner diameter of the check ring is smaller than the outer diameter of the connecting nut;

after the part of the connecting nut extends out of the guide hole, the inner ring of the anti-return ring deforms towards the extending direction of the connecting nut, and the deformed part of the anti-return ring abuts against the ratchet ring.

Preferably, the position locking member is a pawl;

after the connecting nut partially extends out of the guide hole, the claw is abutted against the ratchet ring.

Preferably, the buffer box is divided into:

the bottom of the top box is open, the guide hole is arranged on one side of the top box opposite to the opening, and the opening side extends outwards to form a mounting plate;

the bottom cover covers the opening of the top box, and the end part of the connecting nut extends out of the bottom cover;

the mounting plate is fixedly connected with the bottom cover through a limiting bolt, and the limiting bolt is further used for connecting a separation buffering device and a separation surface.

Preferably, the method further comprises the following steps:

explosion buffer, it includes the blotter, the blotter setting is between mounting panel and bottom, mounting panel, blotter and bottom pass through spacing bolt fixed connection.

Preferably, the explosion damping device further comprises:

and the elastic ring cushion is arranged outside the rod part of the limiting bolt and is positioned between the head part of the limiting bolt and the mounting plate.

Preferably, the method further comprises the following steps:

the elastic pads are arranged on one surface of the buffer box close to the guide hole and are symmetrically arranged on two sides of the guide hole;

the flat cushion is arranged on the top surface of the elastic cushion;

and the fixing bolts are symmetrically arranged along the guide holes and connect the flat pads, the elastic pads and the buffer box, and the fixing bolts keep the heights of all the fixing bolts consistent through the flat pads.

The beneficial effect that technical scheme that this application provided brought includes:

the utility model provides a take low separation buffer who strikes of self-locking function, cage structure of similar claw shape through a plurality of cardboard formation, after explosion bolt explosion, coupling nut receives to strike out from the guiding hole of buffering box in the impact, and the striking causes the slight deformation of cardboard in the cage structure that the cardboard formed, make interference fit between cardboard and the coupling nut simultaneously, the overall structure that final a plurality of cardboards constitute is with coupling nut centre gripping, prevent that coupling nut from falling back. Meanwhile, the clamping plate has a limiting effect, so that the extending direction of the connecting nut is prevented from deviating, and the connecting nut is prevented from impacting other adjacent rocket structures to cause damage.

Meanwhile, in some further improvements, the side wall of the conical cylinder of the connecting nut is provided with a ratchet ring similar to a saw tooth shape, the longitudinal section of the ratchet ring is similar to a ratchet wheel, and the connecting nut can be clamped after the connecting nut extends out by matching with the position locking assembly, so that the falling back of the connecting nut is prevented, and the self-locking effect is improved.

In some improvements, due to the fact that the deformation buffer piece is arranged, impact can be effectively absorbed, on one hand, internal energy is converted into deformation energy, direct impact is reduced, meanwhile, impact vibration is reduced through the deformation buffer piece after the deformation through fragmentation, and damage to other devices of the rocket is reduced.

In further improvement, the deformation buffer piece is arranged in a step shape, the deformation area can be controlled through the strength change of the wall thickness, the crushing shape can be accurately controlled, the internal energy can be effectively converted into the deformation energy, the impact propagation can be controlled, and the purpose of reducing the impact hazard can be achieved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is a schematic cross-sectional view of the embodiment shown in fig. 1.

FIG. 3 is a side view of the embodiment of FIG. 1.

Fig. 4 is a schematic structural view of the embodiment shown in fig. 1 before explosion.

Fig. 5 is a schematic structural view of the embodiment shown in fig. 1 after explosion.

Fig. 6 is an enlarged schematic view of a point a in fig. 5.

Reference numerals:

1. a buffer box; 11. a guide hole; 12. a set-top box; 121. mounting a plate; 13. a bottom cover; 2. a connecting nut; 21. a flange ring; 22. a ratchet ring; 3. an impact limiting component; 31. clamping a plate; 32. a position lock; 4. a deformation buffer member; 5. an explosion damping device; 51. a cushion pad; 52. an elastic ring pad; 6. a limit bolt; 7. an elastic pad; 8. flattening the cushion; 9. and (5) fixing the bolt.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The application provides a take low separation buffer's of assaulting of self-locking function embodiment, including buffering box 1, coupling nut 2 and impact spacing subassembly 3.

Wherein the buffer box 1 is a box-shaped structure, and the inside is provided with the cavity, and the guiding hole 11 has been seted up to one side, and in this implementation and other subsequent embodiments, for the convenience of description, the direction of the central orientation guiding hole 11 of buffer box 1 is the top.

The connecting nut 2 is mainly used for connecting an explosion bolt, one downward end part of the connecting nut 2 extends out of the buffer box 1 and is used for being connected with the explosion bolt, a flange ring 21 for preventing the connecting nut 2 from falling off is arranged, and one upward end part of the connecting nut 2 extends into the guide hole 11.

The impact limiting member 3 includes a plurality of chucking plates 31, each chucking plate 31 upwardly projecting from the edge of the guide hole 11, and the upper ends of the chucking plates 31 being inclined toward the axis of the guide hole 11.

Specifically, as shown in fig. 1, the buffer box 1 in this embodiment is a cylindrical box body, the guiding hole 11 is disposed at the center of the upper surface of the buffer box 1, and the coupling nut 2 is also coaxial with the buffer box 1.

After the explosion bolt explodes, the connecting nut 2 receives the impact and upwards flies out, because the connecting nut 2 part stretches into the guiding hole 11, receive the restriction of guiding hole 11, consequently, the direction of flight can not deflect when the connecting nut 2 just begins, when the connecting nut 2 part stretches out the guiding hole 11, can meet and form a plurality of cardboard 31 of drawing in claw shape, cardboard 31 draws in because the upper end draws in to the 11 axis of guiding hole, so the radius of the circle that the upper end of all cardboard 31 constitutes is less than the external diameter of connecting nut 2, connecting nut 2 needs to make cardboard 31 produce deformation earlier under the impact, also become mutually with the impact energy of connecting nut 2 become the deformation ability of cardboard 31, the impact energy of connecting nut 2 has been reduced. Simultaneously behind coupling nut 2 dashes out cardboard 31, cardboard 31 and coupling nut 2's lateral wall form interference fit for the whole of all cardboard 31 constitutions is lived coupling nut 2 centre gripping, avoids coupling nut 2 to drop.

In order to further reduce the impact caused by the connecting nut 2, in some preferred embodiments, a deformation buffer 4 is further provided, and one end of the deformation buffer 4 abuts against the flange ring 21, and the other end abuts against the inner wall surface of the buffer box 1 provided with the guide hole 11. Specifically, the deformation buffer 4 is generally made of a fragile or easily deformable material, and is used for converting kinetic energy of impact into deformation energy, so as to buffer part of the impact. In some embodiments, some elastic structures are further disposed between the deformation buffer 4 and the buffer box 1 to prevent the sharp spikes generated by the deformation and the impact attached to the sharp spikes from breaking through the buffer box 1.

Specifically, one of the preferred structures is as shown in fig. 2, and is in an inverted annular step shape, and is sleeved outside the connection nut 2, wherein the largest one is upward and abuts against the inner wall of the buffer box 1, and the smallest one is downward and abuts against the flange ring 21, and after the explosion bolt is detonated, the connection nut 2 is impacted and flies upward to drive the flange ring 21 to compress the deformation buffer member 4. The wall thickness distribution of each step of the deformation buffer part 4 can be controlled in the implementation process, and then the shape of the deformation buffer part 4 after deformation is controlled, so that the actually implemented buffer effect is consistent with the expected effect as far as possible. Meanwhile, the shape of the guide hole is inverted annular stepped, so that the material of the deformation buffer member 4 is not arranged near the guide hole 11, and the guide hole 11 is prevented from being blocked after the deformation buffer member 4 is compressed.

In order to further improve the success rate of self-locking, in some preferred embodiments, the outer wall of one end of the connecting nut 2 near the guiding hole 11 protrudes outward to form a ratchet ring 22, and the number of the ratchet rings 22 is plural and is arranged along the axial direction of the connecting nut 2.

And the impact limiting assembly 3 further comprises:

and a position locking member 32 provided at the edge of the guide hole 11, the position locking member 32 abutting against the ratchet ring 22 after the coupling nut 2 is partially protruded out of the guide hole 11.

Specifically, the ratchet ring 22 is similar to a ratchet, and its cross section can be seen in fig. 6, the upward side is a circular arc, and the downward side is a plane, so that when the connection nut 2 is upward, the connection nut 2 has a large impact force, so that the ratchet ring 22 easily passes through the position locking member 32, and when the connection nut 2 is dropped after the impact is finished, the plane on the lower side of the ratchet ring 22 abuts against the position locking member 32, so that the connection nut 2 cannot fall back, and the action mode is similar to a ratchet pawl.

On the other hand, it is very obvious that after the ratchet ring 22 is arranged, because the upper surface of the ratchet ring 22 is arc-shaped, the connecting nut 2 cannot be influenced to penetrate out of the clamping plate 31, and after the impact is finished, the clamping plate 31 can be clamped on the plane on the lower side of the ratchet ring 22, so that the self-locking success rate of the clamping plate 31 is improved.

In one embodiment, the position locking member 32 is a check ring, the inner diameter of the check ring is smaller than that of the connecting nut, and the inner circle of the check ring extends upwards, so that when the connecting nut 2 is punched out from the guide hole 11, firstly, the upper arc surface of the ratchet ring 22 is attached to the inner circle of the check ring, and because the upper arc surface of the ratchet ring 22 is arc-shaped, the extension of the connecting nut cannot be influenced, the impact size of the connecting nut 2 is reduced, and secondly, the inner ring of the check ring tilts upwards to just achieve the effect of abutting against the plane of the ratchet ring 22. In view of the flexibility and strength required for the anti-slip ring, copper is generally used for the anti-slip ring, and other materials with similar properties can also be used.

In another embodiment, the position locking member 32 is a pawl, and the interaction between the pawl and the ratchet ring 22 is similar to a ratchet pawl, and the pawl contacts the smooth upper side of the ratchet ring 22 when the coupling nut 2 is punched out, and does not affect the movement of the coupling nut 2, and the coupling nut 2 falls down to block the flat surface of the bottom of the ratchet ring 22, so that the coupling nut 2 cannot fall back.

The structure of the buffer box 1 is various, and in consideration of the need of taking strength and installation convenience into consideration, in a preferred embodiment, as shown in fig. 1, fig. 2 and fig. 3, the buffer box 1 includes a top box 12 and a bottom cover 13, the bottom of the top box 12 is open, the bottom cover 13 covers the open of the top box 12, two ends of the open top cover extend outwards to form an installation plate 121, the bottom cover 13 and the installation plate 121 are connected through a limit bolt 6, the bottom cover 13 can be detached for installation when being assembled, and the bottom cover 13 is fastened through the limit bolt 6 after being assembled.

The limit bolt 6 can connect the bottom cover 13 and the mounting plate 121 on one hand, and can also help to mount the separation buffer device on a mounting surface to be separated on the other hand.

In case of explosion of the explosive bolt, part of the impact force may cause impact of the bottom cover 13 and then be transmitted to other structures of the rocket through the buffer case 1, and therefore, in some embodiments, the explosion buffer device 5 is provided, and the explosion buffer device 5 includes a cushion 51. Specifically, the cushion pad 51 is a nearly rectangular ring, the shape of the cushion pad is similar to the cross section of the cushion box 1, the cushion pad is generally a foam cushion, and in some embodiments, other materials with similar elasticity are taken into consideration for waterproof, fireproof or other requirements, so that after the explosion bolt is detonated, the impact can be absorbed by the cushion pad 51, and the influence on other rocket structures at the top of the cushion box 1 is low.

In some embodiments, blast buffering means 5 further comprises an elastic ring pad 52, and elastic ring pad 52 is disposed outside the shaft of the stop screw and between the head of the stop screw and mounting plate 121. Specifically, the elastic ring pad 52 is generally made of rubber and the like capable of bearing certain deformation, the limiting bolt 6 is used for being connected with the separating surface, the compression amount of the elastic ring pad 52 is controlled in a limiting mode through threads, the buffer box 1 and the separating surface are guaranteed to be in a proper compression state, and the energy transmitted to the buffer box 1 by the impact of the explosive bolt is further reduced

In still other embodiments, the device further comprises an elastic pad 7, a flat pad 8 and a fixing bolt 9. The elastic pad 7 is arranged at the top of the buffer box 1, the flat pad 8 is arranged at the top of the elastic pad 7, the fixing bolt 9 is used for connecting the elastic pad 7 and the flat pad 8, and the fixing bolt 9 is consistent in height so as to reduce the impact transmitted from the buffer box 1 to other structures.

Specifically, the elastic pads 7 are symmetrically arranged on two sides of the guide hole 11 and extend outwards, and the fixing bolts 9 need to be symmetrically arranged according to the circle center of the guide hole 11.

On the other hand, in some embodiments with a retaining ring, the elastic pad 7 and the flat pad 8 may also be used to assist in securing the retaining ring.

The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a take low separation buffer who strikes of self-locking function which characterized in that includes:

the buffer box (1) is internally provided with a cavity, and one surface of the buffer box is provided with a guide hole (11);

one end of the connecting nut (2) extends out of the buffer box (1) and is connected with an explosion bolt, a flange ring (21) for preventing the explosion bolt from falling off is sleeved on the outer wall adjacent to the end, the other end part of the connecting nut (2) extends into the guide hole (11), and the flange ring (21) abuts against the inner wall, opposite to the guide hole (11), in the buffer box (1);

the impact limiting assembly (3) comprises a plurality of clamping plates (31), each clamping plate (31) extends out of the buffer box (1) from the edge of the guide hole (11), and the extending end of each clamping plate (31) inclines towards the axis of the guide hole (11);

when the explosive bolt explodes, the connecting nut (2) partially extends out of the guide hole (11) and is in interference fit with the whole clamping plates (31).

2. The low-impact separation buffer device with the self-locking function according to claim 1, further comprising:

and the deformation buffer piece (4) is arranged in the inner cavity of the buffer box (1), one end of the deformation buffer piece is abutted against the flange ring (21), and the other end of the deformation buffer piece is abutted against the inner wall surface of the buffer box (1) provided with the guide hole (11).

3. The low-impact separation buffer device with the self-locking function according to claim 2, characterized in that: the deformation buffer component is in an annular step shape and is reduced step by step, wherein the largest one of the deformation buffer component is abutted against the inner wall surface of the buffer box (1) provided with the guide hole (11), and the smallest one of the deformation buffer component is abutted against the flange ring (21).

4. The low-impact separation buffer device with the self-locking function according to claim 1,

the outer wall of the connecting nut (2) protrudes outwards to form a plurality of ratchet rings (22), and the ratchet rings (22) are arranged along the axial direction of the connecting nut (2);

the impact limiting component (3) further comprises:

and a position locking member (32) provided at the edge of the guide hole (11), the position locking member (32) abutting against the ratchet ring (22) after the coupling nut (2) is partially protruded out of the guide hole (11).

5. The low-impact separation buffer device with the self-locking function according to claim 4, characterized in that:

the position locking piece (32) is a check ring, and the inner diameter of the check ring is smaller than the outer diameter of the connecting nut (2);

the inner ring of the anti-return ring is protruded towards the extending direction of the connecting nut (2), and after the connecting nut (2) extends out of the guide hole (11), the protruded part of the anti-return ring is abutted against the ratchet ring (22).

6. The low-impact separation buffer device with the self-locking function according to claim 4, characterized in that:

the position locking piece (32) is a claw;

after the connecting nut (2) partially extends out of the guide hole (11), the claw is abutted to the ratchet ring (22).

7. The low-impact separation buffer device with the self-locking function according to claim 1, wherein the buffer box (1) is divided into:

the bottom of the top box (12) is open, the guide hole (11) is arranged on one side, opposite to the open side, of the top box (12), and the open side extends outwards to form a mounting plate (121);

the bottom cover (13) covers the opening of the top box (12), and the end part of the connecting nut (2) extends out of the bottom cover (13);

the mounting plate (121) and the bottom cover (13) are fixedly connected through a limiting bolt (6), and the limiting bolt (6) is further used for connecting a separation buffering device and a separation surface.

8. The low-impact separation buffer device with the self-locking function according to claim 7, further comprising:

explosion buffer (5), it includes blotter (51), blotter (51) set up between mounting panel (121) and bottom cover (13), mounting panel (121), blotter (51) and bottom cover (13) are through spacing bolt (6) fixed connection.

9. The self-locking low-impact separation damping device according to claim 8, wherein the explosion damping device (5) further comprises:

and the elastic ring pad (52) is arranged outside the rod part of the limiting bolt (6) and is positioned between the head part of the limiting bolt (6) and the mounting plate (121).

10. The low-impact separation buffer device with the self-locking function according to claim 1, further comprising:

the elastic pads (7) are arranged on one surface, close to the guide hole (11), of the buffer box (1) and are symmetrically arranged on two sides of the guide hole (11);

a flat pad (8) arranged on the top surface of the elastic pad (7);

fixing bolt (9), there are many pairs, set up along guiding hole (11) symmetry, and with flat pad (8), cushion (7) and buffer box (1) connection, fixing bolt (9) keep the highly unanimous of all fixing bolt (9) through flat pad (8).