CN114750985A - Redundant multi-unlocking drive separation releasing device - Google Patents

Abstract

The invention discloses a redundant multi-unlocking driving separation release device which comprises a split nut, a radial limiting device, an inner lining frame, a locking device and an integrated unlocking device, wherein the split nut clamps and limits the separation of a separation bolt, the radial limiting device radially limits the opening of the split nut, the locking device is used for connecting and locking the radial limiting device and the inner lining frame, and the integrated unlocking device is used for unlocking the locking state of the locking device so as to enable the radial limiting device to axially move and change the contact position of the split nut and the radial limiting device, so that the split nut unlocks the radial limitation to achieve the separation purpose. The invention mainly converts the unlocking release of the separation bolt into a mechanical control mode of simple axial movement of a mechanical structure, can realize the separation of large equipment driven by a small mechanical combined structure, has small generated impact force, simple mechanical structure layout and simple and direct action mode, realizes the process of high-efficiency unlocking, and can integrate various unlocking operation mechanisms.

Description

A redundant multi-unlocking drive separation release device

technical field

The invention relates to the technical field of rocket separation, in particular to a redundant multiple unlocking drive separation and release device.

Background technique

Spacecraft separation and release technology is an important research and application content in the aerospace field, and it is a key link that affects the success or failure of aerospace missions. As a key product to realize connection and unlocking, the separation device needs to focus on the working reliability and environmental adaptability within the flight profile. Generally speaking, according to the classification of the structure, the separation device can be divided into point separation, line separation, etc.; according to the classification of the working principle, it can be divided into pyrotechnic separation device, non-pyrotechnic separation device and so on. Due to its non-polluting and environment-friendly characteristics, non-pyrotechnical separation devices have received more and more attention and applications in the field of spacecraft separation devices. The principle of the pyrotechnic separation device is to make the electric detonator or electric igniter work through the current, generate detonation signal or flame energy, ignite the charges at all levels in the detonation sequence, and finally realize the unlocking and separation of the terminal separation device. Since the unlocking process involves explosion, detonation or flame energy transfer, the generated impulse is large and the impact environment is extremely harsh. It is generally used in inter-stage separation systems with large flight loads and insensitive to mechanical environment. However, in the occasions with high requirements on the mechanical environment, such as the star-rocket separation system, the application is greatly limited. The principle of non-pyrotechnical separation device generally realizes connection and unlocking through electric and pneumatic methods. From the perspective of unlocking principle, mechanical movement is used to avoid the impact environment caused by explosion. It has the characteristics of small unlocking impulse and small high-frequency impact magnitude. Arrow separation system and other occasions with strict requirements on mechanical environment.

At present, the widely used unlocking release method is pyrotechnic separation, which is to use the high temperature and high pressure generated by the explosion of pyrotechnics to fuse or blow the connection structure to achieve the purpose of separation. Since the explosive device will generate an impact environment of up to tens of thousands of grams, the explosive device needs to be equipped with a collection box and a vibration-absorbing and energy-absorbing device to improve the impact environment and avoid affecting the separated spacecraft. With the rapid development of microsatellites, the demand for low-impact separation methods is very clear. At present, the mature unlocking drive sources used in various countries in the world include: memory alloy, electric thermal fuse, polymer drive, motor drive, etc.

Compared with pyrotechnic separation devices, the advantages of non-pyrotechnical and low-impact separation devices are that they have no pollution and less impact environment, but their disadvantages are that there are many separation and unlocking links, slower speed, and complex structure, which is not suitable for the working reliability of the device and the environment. Sex makes high demands. The realization of reliable connection, reliable unlocking, and non-pyrochemical separation device with good resistance to mechanical and thermal environment is one of the key points and difficulties in the research of spacecraft separation technology.

Therefore, it is difficult for the separation device in the prior art to take into account the technical requirements of low impact and efficient unlocking at the same time.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a redundant multiple unlocking drive separation and release device, so as to solve the technical requirement and technical problem that the separation device of the prior art is difficult to take into account both low impact and efficient unlocking.

In order to solve the above-mentioned technical problems, the present invention specifically provides the following technical solutions:

The present invention provides a redundant multi-unlocking drive separation and release device, comprising:

a housing with a cavity, a separation port is provided at the separation end of the cavity, and an installation port is provided at the unlocking end of the cavity;

A separation bolt, one end of the separation bolt extends out of the separation port to connect the components to be separated;

a split nut, arranged inside the cavity, the split nut is used for radially clamping the other end of the separation bolt;

A radial limiting device is arranged on the outer peripheral side of the split nut, the radial limiting device is used to limit the radial opening of the split nut to fix the separation bolt, and the radial limiting device One end of the device is connected to the inner wall of the separation end through a release spring, and the inner wall of the radial limiting device is provided with a space structure that allows the split nut to enter after radially expanding, and the split nut at least able to expand radially in the free state of the release spring;

a lining frame, one end of which is fixed on the inner wall of the installation opening of the unlocking end, and the other end is located inside the cavity;

a locking device for connecting and locking the inner liner frame with the end of the radial limiting device, so as to limit the axial movement of the radial limiting device and keep the release spring in a compressed state , and the locking device can release the locked state of the inner liner frame and the radial limiting device through radial movement;

an integrated unlocking device, including an unlocking implementing mechanism and an unlocking operating mechanism, the unlocking implementing mechanism is connected with the locking device, and the unlocking operating mechanism is fixed at the installation opening and partially located outside the cavity;

The unlocking actuator is used to limit the radial movement of the locking device in an initial state, and can release the restriction on the radial movement of the locking device through movement, so that the radial limiting device can Move axially under the action of the elastic force in the compressed state of the release spring to release the radial restriction on the split nut;

The unlocking operating mechanism includes at least one structure for driving the unlocking actuator to move to release the locking state of the locking device.

Further, the radial limiting device is sleeved on the outer peripheral side of the lining frame, the unlocking actuator includes a driving block and a driving rod, and the driving block is arranged inside the lining frame and is connected with the lining frame. The inner wall of the lining frame is in close contact, one end of the driving rod is connected to the unlocking operating mechanism through the installation port, and the other end of the driving rod is connected to the driving block and drives the driving block to be axially inside the lining frame. move;

The locking device includes a locking hole arranged on the inner wall of the radial limiting device, a through hole arranged on the side wall of the lining frame, and a steel ball, and the steel ball can be located in the locking hole and all the steel balls at the same time. inside the through hole to limit the axial movement of the radial limiting device, the side wall of the driving block can close the through hole to limit the movement of the steel ball, the unlocking operation mechanism The block rotates or moves axially so that the side wall of the driving block releases the restriction on the radial movement of the steel ball in the through hole.

Further, the unlocking operating mechanism includes a fixing mechanism, a pin-pulling unlocking mechanism and a steering unlocking mechanism;

The fixing mechanism includes a rotating seat and a fixing frame, one end of the fixing frame is fixedly connected to the side wall of the installation port, the rotating seat is arranged inside the fixing frame and can be rotated axially, and the rotating seat is located in the rotating seat. A drive rod channel is provided in the center, and the drive rod can move axially in the drive rod channel;

The pin-pulling and unlocking mechanism includes a pin-puller and a driving spring, the driving spring is arranged on the outer peripheral side of the driving rod, one end of the driving spring is connected to the bottom of the driving block, and the other end is connected to the driving rod channel Inside, there is a pin hole on the side of the drive rod, and a pin puller channel for setting the pin puller is opened on the side wall of the drive rod channel, and the pin puller end of the pin puller is connected to the inside the pin hole to limit the axial movement of the drive rod and to put the drive spring in a compressed state, the drive rod moves axially toward the separation end when the pin puller is disengaged from the pin hole, so that The position where the side wall surface of the driving block is separated from the through hole;

The steering unlocking mechanism includes an unlocking motor and a steering unlocking hole, the steering unlocking hole is provided on the side wall of the drive block at a position deviating from the through hole, the unlocking motor is provided on the fixing frame, and the The main shaft of the unlocking motor is fixedly connected with the rotating seat, so as to drive the entire rotating seat to rotate, and then drive the driving rod and the driving block to rotate, so that the steering unlocking hole rotates to be directly opposite to the through hole Under the force of the release spring, the radial limiting device can apply an oblique thrust to the steel ball, and the steel ball can move radially toward the steering unlocking hole, and the steering unlocking hole can The steel ball can be completely separated from the locking hole.

Further, the radial limiting device includes a compression hoop and a locking hoop, and the compression hoop and the locking hoop are connected by a partition;

The release spring is arranged around the entire outer peripheral side of the compression hoop, and the end of the release spring is connected to the part of the baffle extending to the outside of the compression hoop; the locking hoop is sleeved on the outer side of the compression hoop. On the outer peripheral side of the lining frame, the locking hole is arranged on the inner wall of the locking hoop;

The inner wall of the compression hoop is provided with a first concave-convex block, and the outer wall of the split nut is provided with a second concave-convex block, and the first concave-convex block and the second concave-convex block both form upper and lower positions in the circumferential direction The concave-convex alternating structure on the upper part of the nut, the first concave-convex block and the second concave-convex block are arranged opposite to each other in the state where the radial limiting device restricts the radial opening of the split nut, and in the radial direction When the limiting device moves axially to release the restriction on the split nut, it is dislocated, so that the convex part of the second concave-convex block enters the concave part of the first concave-convex block.

Further, a nut pulling rod is provided on the partition plate, the other end of the nut pulling rod extends into the end of the split nut away from the separation port, and the nut pulling rod is used to When moving axially toward the limiting device, the interior of the split nut is opened.

Further, an annular groove is formed between the driving rod and the inner wall of the lining frame, the driving block releases the restriction on the steel ball during the axial movement, and makes the steel ball radially move to the annular groove.

Further, a pin-pulling unlocking hole is provided on the side wall of the driving block, and the pin-pulling unlocking hole is located below the steering unlocking hole and is axially staggered from the steering unlocking hole, and the pin-pulling unlocking hole is located below the steering unlocking hole. In the locked state, the displacement is in the same axial direction as the through hole, and the pin-pulling and unlocking hole can provide a space for the steel ball to move radially, so that the steel ball can be completely separated from the locking hole.

Further, a pin-pulling opening is provided laterally on the fixing frame, the pin-puller is partially arranged in the pin-pulling opening, and the pin-puller can move along the pin-pulling opening in the pin-pulling opening. Circumferential rotation of the pin opening.

Further, an inwardly extending channel for accommodating the driving spring is opened laterally on the inner wall of the driving rod channel, and the driving spring is arranged in the inwardly extending channel.

Further, the rotating seat is connected with the fixing frame through a bearing, the outer ring of the bearing is connected with the fixing frame, and the inner ring of the bearing is connected with the outer wall of the driving rod channel of the rotating seat.

Compared with the prior art, the present invention has the following beneficial effects:

The present invention mainly converts the unlocking and releasing of the separating bolt into a simple axial movement of a mechanical structure (mainly using a coaxial spring) by restricting the axial movement of the separation bolt in the radial direction, and using an axial movement method to release the radial restriction. It can realize the separation of large equipment driven by a small mechanical combination structure, the impact force is small, the mechanical structure layout is simple, the action method is simple and direct, and the process of efficient unlocking is realized.

And because it is converted into the manipulation of axial motion, multiple unlocking operating mechanisms can be integrated to reduce the risk of separation failure caused by the failure rate of a single unlocking method.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that are required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, other implementation drawings can also be obtained according to the extension of the drawings provided without creative efforts.

1 is a schematic structural diagram of a redundant multi-unlock release device provided by the present invention;

2 is a schematic diagram of the pin-pulling and unlocking mechanism in the present invention in a pin-pulling release state;

FIG. 3 is a schematic diagram of the motor releasing state of the steering unlocking mechanism in the present invention.

The symbols in the figure are as follows:

A-separation end; B-unlock end; 1-separation bolt; 2-split nut; 3-release spring; 4-inner lining frame;

10-shell; 11-cavity; 12-separation port; 13-installation port;

20-radial limiting device; 21-pressing hoop; 22-locking hoop; 23-partition; 24-first concave-convex block; 25-second concave-convex block; 26-nut pulling rod;

30-Locking device; 31-Locking hole; 32-Through hole; 33-Steel ball; 34-Annular groove; 35-Pull pin unlocking hole;

40-unlock actuator; 41-drive block; 42-drive rod;

50-unlocking operating mechanism; 51-fixing mechanism; 52-pulling pin unlocking mechanism; 53-steering unlocking mechanism; 54-bearing;

511-rotating seat; 512-fixing frame; 513-drive rod channel; 514-pulling pin opening; 515-inward extension channel;

521-pin puller; 522-drive spring; 523-pin hole; 524-pin puller channel;

531-unlock the motor; 532-steer the unlocking hole.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in Figure 1, Figure 2 and Figure 3, the present invention provides a redundant multi-unlocking drive separation and release device, comprising:

The housing 10 has a cavity 11, the separation end A of the cavity 11 is provided with a separation port 12, and the unlocking end B of the cavity 11 is provided with an installation port 13;

A separation bolt 1, one end of the separation bolt 1 extends out of the separation port 12 to connect the parts to be separated;

The split nut 2 is arranged inside the cavity 11, and the split nut 2 is used for radially clamping the other end of the separation bolt 1;

The radial limiting device 20 is arranged on the outer peripheral side of the split nut 2, and the radial limiting device 20 is used to limit the radial opening of the split nut 2 to fix the separation bolt 1, so One end of the radial limiting device 20 is connected to the inner wall of the separation end A through a release spring 3, and the inner wall of the radial limiting device 20 is provided with a spacer capable of allowing the split nut 2 to open radially. Entering space structure, the split nut 2 can radially open at least when the release spring 3 is in a free state;

One end of the lining frame 4 is fixed on the inner wall of the installation opening 13 of the unlocking end B, and the other end is located inside the cavity 11;

A locking device 30 for connecting and locking the inner liner frame 4 with the end of the radial limiting device 20 to limit the axial movement of the radial limiting device 20 and to release the The spring 3 is in a compressed state, and the locking device 30 can be moved radially to release the locking state of the lining frame 4 and the radial limiting device 20;

An integrated unlocking device includes an unlocking actuator 40 and an unlocking operating mechanism 50, the unlocking actuator 40 is connected to the locking device 30, and the unlocking operating mechanism 50 is fixed on the installation port 13 and partially located in the cavity 11 outside;

The unlocking actuator 40 is used to limit the radial movement of the locking device 30 in the initial state, and can release the restriction on the radial movement of the locking device 30 through movement, so that the radial limit The position device 20 can move axially under the elastic force of the release spring 3 in the compressed state to release the radial restriction on the split nut 2;

The unlocking operating mechanism 50 includes at least one structure for driving the unlocking actuator 40 to move to release the locking state of the locking device 30 .

Among them, the parts to be separated are mainly spacecraft.

The core point of this embodiment is that the separation bolt is released by means of coaxial spring drive, so as to realize the mechanical layout of "small with large", that is, the small control structure drives the separation of large equipment, and its overall The mechanical action is simple and reliable, and the impact force generated during separation is smaller than the existing pyrotechnic separation methods.

The unlocking device adopted in this embodiment mainly utilizes the principle of limit locking. During the unlocking process, only contact with the limit locking structure is required to complete the release instantaneously under the action of the spring restoring force. The impact separation device has a simple unlocking method, and the process of unlocking and completing the release is relatively fast, and the overall structure is not complicated.

In order to reflect the advantages of this embodiment in detail, the following is a detailed description in conjunction with its specific locking principle and release principle:

As shown in Figure 1, the locking method is as follows:

The split bolt is radially locked by the split nut, that is, the axial movement of the split bolt is restricted by applying a radial force to the split nut. This locking structure is very stable.

Among them, the radial limiting device 20 can only exist in two states. The first is that the split nut can be completely closed in a certain state, and the second is that the split nut can be moved axially. It can be opened radially, that is, the radial limiting device 20 has a space capable of radially opening and moving the split nut, and the space is inactive in the locked state.

That is to say, the locking part of the split nut only needs to meet the above conditions. On this basis, it is equivalent to transform the release of the separation bolt into a control method that enables the radial limit device 20 to be displaced axially, and the axial displacement Compared with the existing non-fire, low impact separation device, the control method is easier to realize.

Specifically, a lining frame 4 that can be connected to the radial limiting device 20 is connected to the control end, and the radial limiting device 20 is controlled by controlling the locking and releasing states of the lining frame 4 and the radial limiting device 20 . Therefore, for the locking device 30 in this embodiment, as long as the lining frame 4 and the radial limit can be realized The device 20 can be locked and unlocked. Of course, in practical applications, a preferred unlocking method needs to be adopted.

A preferred locking and unlocking scheme of the radial limiting device and the inner liner frame 4 is provided as follows:

As shown in FIG. 2 , the radial limiting device 20 is sleeved on the outer peripheral side of the lining frame 4 , and the unlocking actuator 40 includes a driving block 41 and a driving rod 42 , and the driving block 41 is provided at the The inner lining frame 4 is in close contact with the inner wall of the lining frame 4, one end of the driving rod 42 is connected to the unlocking operating mechanism 50 through the installation port 13, and the other end of the driving rod 42 is connected to the driving block 41 and drive the drive block 41 to move axially inside the lining frame 4;

The locking device 30 includes a locking hole 31 arranged on the inner wall of the radial limiting device 20 , a through hole 32 arranged on the side wall of the lining frame 4 , and a steel ball 33 , the steel ball can be located at the same time. inside the locking hole 31 and the through hole 32 to limit the axial movement of the radial limiting device 20 , the side wall of the driving block 41 can close the through hole 32 to limit the movement of the steel ball 33 Moving, the unlocking operating mechanism 50 releases the restriction on the radial movement of the steel ball 33 in the through hole 32 by the side wall of the driving block 41 by rotating or axially moving the driving block 41 .

Specifically, in the locked state, the steel ball 33 is located in the locking hole 31 and the through hole 32 at the same time, and the side wall of the driving block 41 closes the through hole 32 to limit the axial movement of the radial limiting device 20 . In the state, by axially moving the driving block 41, the side wall of the driving block 41 is not closed to restrict the through hole 32, because the radial limiting device 20 is subjected to the axial rebound force of the release spring 3, and due to the elastic force of the steel ball 33. Due to the mechanical characteristics of the external structure, the steel ball 33 will move away from the locking hole 31 under the circumferential force, thereby completing the unlocking.

Wherein, the drive block 41 can completely disengage its side wall from the position of the through hole 32 by moving, so that the steel ball 33 directly enters the interior of the lining frame 4 .

Preferably, at least two locking devices 30 are evenly arranged around the side wall of the lining frame 4 .

At the control end of the present invention, a redundant double unlocking device is preferably designed to reduce the influence of the failure rate on the implementation of unlocking control, as follows:

The unlocking operating mechanism 50 includes a fixing mechanism 51, a pin-pulling unlocking mechanism 52 and a steering unlocking mechanism 53;

The fixing mechanism 51 includes a rotating base 511 and a fixing frame 512, one end of the fixing frame 512 is fixedly connected to the side wall of the installation port 13, and the rotating base 511 is arranged inside the fixing frame 512 and can be rotated axially, A driving rod channel 513 is provided in the center of the rotating seat 511, and the driving rod 42 can move axially in the driving rod channel 513;

The pin-pulling and unlocking mechanism 52 includes a pin-puller 521 and a driving spring 522. The driving spring 522 is arranged on the outer peripheral side of the driving rod 42. One end of the driving spring 522 is connected to the bottom of the driving block 41, and the other end is connected to the driving block 41. In the drive rod channel 513, there is a pin hole 523 on the side of the drive rod 42, and a pin puller 524 is provided on the side wall of the drive rod channel 513. The pin puller 521 is provided. The pin pulling end of the pin puller 521 is connected in the pin hole 523 to limit the axial movement of the driving rod 42 and keep the driving spring 522 in a compressed state. The driving rod 42 is in the pin puller 521 When disengaging from the pin hole 523 , it moves axially toward the separating end, so that the side wall surface of the driving block 41 is disengaged from the position of the through hole 32 ;

The steering unlocking mechanism 53 includes an unlocking motor 531 and a steering unlocking hole 532. The steering unlocking hole 532 is provided at a position on the side wall of the drive block 41 that is offset from the through hole 32, and the unlocking motor 531 is provided on the fixing frame. 512, and the main shaft of the unlocking motor 531 is fixedly connected to the rotating base 511 to drive the entire rotating base 511 to rotate, thereby driving the driving rod 42 and the driving block 41 to rotate, so that the steering The unlocking hole 532 is turned to communicate directly with the through hole 32 , and the radial limiting device 20 can apply an oblique thrust to the steel ball 33 under the force of the release spring 3 , and make the steel ball 33 It can move radially toward the steering unlocking hole 532 , and the steering unlocking hole 532 can make the steel ball 33 completely disengage from the locking hole 31 .

The pin-pulling unlocking mechanism 52 restricts the driving rod 42 radially and keeps the driving spring 522 in a compressed state, that is, the initial state of the driving rod 42 is set in a spring-compressed state, so that the radial restriction can be released by pulling the pin, and the driving rod Under the action of the rebound force of the drive spring 522, it moves in the direction close to the separation port 12, so that the drive block is separated from the through hole, the steel ball is further separated from the locking hole, and the radial limit device is moved to the mounting port under the action of the rebound force of the release spring. Move in the direction to release the radial locking state of the split nut.

Among them, the steering unlocking mechanism 53 unlocks the steel ball 33 by rotating the driving block 41. The key is that a steering unlocking hole 532 needs to be provided on the driving block 41, and the steering unlocking hole 532 is initially located at the same level as the through hole. During the rotation, the two overlap, and the steel ball moves into the steering unlocking hole to achieve the purpose of unlocking.

In order to be able to use a small control operation and achieve the purpose of quick unlocking, generally, the distance between the steering unlocking hole and the through hole in the circumferential direction is set as small as possible.

In addition, in the pin-pulling and unlocking scheme, at least an annular groove 34 is required to be formed between the driving rod 42 and the inner wall of the lining frame 4, and the driving block 41 releases the restriction on the steel ball 33 during the axial movement. And make the steel ball 33 radially move to the annular groove 34 .

And in the pin-pulling unlocking scheme, the overall structure of the driving block should not be set too small. In order to complete the unlocking more efficiently, the driving block can be unlocked by making the axial movement of a smaller distance. In the driving block 41 The side wall of the fuselage is provided with a pin-pulling unlocking hole 35, which is located below the steering-unlocking hole 532 and is axially staggered from the steering-unlocking hole 532, and the pin-pulling unlocking hole 35 is locked In this state, the displacement is in the same axial direction as the through hole 32 , and the pin pulling and unlocking hole 35 can provide a space for the steel ball 33 to move radially, so that the steel ball 33 can be completely separated from the locking hole 31 .

Wherein, the pin-pulling unlocking hole 35 on the side wall of the driving block 41 may be a separate opening, but is preferably an annular opening structure, which reduces the position requirements for the installation of the driving block.

A preferred radial limiting device 20 is specifically provided below:

The radial limiting device 20 includes a compression hoop 21 and a locking hoop 22, and the compression hoop 21 and the locking hoop 22 are connected by a partition 23;

The release spring 3 is arranged around the entire outer circumference of the compression hoop 21, and the end of the release spring 3 is connected to the part of the partition plate 23 extending to the outside of the compression hoop 21; the locking The hoop 22 is sleeved on the outer peripheral side of the lining frame 4, and the locking hole 31 is disposed on the inner wall of the locking hoop 22;

The inner wall of the pressing hoop 21 is provided with a first concave-convex block 24 , and the outer wall of the split nut 2 is provided with a second concave-convex block 25 , the first concave-convex block 24 and the second concave-convex block 25 are arranged on the circumference. Both upward and downward are formed with alternating concave-convex structures at upper and lower positions, and the first concave-convex block 24 and the second concave-convex block 25 are in a state where the radial limiting device 20 restricts the radial opening of the split nut 2 . They are arranged relative to each other and dislocated when the radial limiting device 20 moves axially to release the restriction on the split nut 2 , so that the convex portion of the second concave-convex block 25 enters the concave portion of the first concave-convex block 24 .

That is to say, the first concave-convex block 24 and the second concave-convex block 25 have at least one convex portion and one concave portion. When the convex portion of the first concave-convex block 24 and the second concave-convex block 25 abut, the split nut is locked, and the convex portion and When the recesses are mated, the split nut is unlocked.

In this embodiment, the structure is preferably made of two convex parts and one concave part formed in the middle of the two convex parts. This provides more stability during locking and unlocking.

In order to allow the split nut to open in the radial direction, the split nut is not easily separated due to the limiting effect of the axial force. Therefore, a nut pulling rod 26 is provided on the partition plate 23, and another part of the nut pulling rod 26 is provided. One end extends into the end of the split nut 2 away from the separation port 12 , and the nut pulling rod 26 is used to spread the inside of the split nut 2 when the radial limiting device 20 moves axially.

Among them, the pin puller adopts the basic principle of the existing pin puller, and restricts or unrestricts the axial movement of the driving rod through the expansion and contraction of the pin puller, that is, the pin puller is given the same signal to start the pin puller. .

A pin-pulling opening 514 is laterally opened on the fixing frame 512 , the pin-pulling device 521 is partially disposed in the pin-pulling opening 514 , and the pin-pulling device 521 can slide along the pin-pulling opening 514 . The circumferential rotation of the pin-pulling opening 514 , that is, the pin-puller 521 is relatively and fixedly connected to the pin-pulling channel 524 in the rotating base 511 , and passes through the pin-pulling opening 514 on the fixing frame to the outside. , the entire rotating base needs to be rotated to a certain extent. Therefore, the purpose of the pin-pulling opening 514 is to satisfy the need for the pin-puller to rotate along with the motor-driven unlocking scheme.

As shown in FIG. 3 , in the motor-driven unlocking scheme, the main purpose is to allow the steering unlocking hole 532 on the drive block 41 to overlap the through hole. Therefore, the circumferential distance between the steering unlocking hole 532 and the through hole is the same as the pin-pulling opening 514 The size of the circumferential slot may be equivalent, or the pin-pulling opening 514 may be slightly larger.

In order to facilitate the installation and stability of the driving spring, an inwardly extending channel 515 for accommodating the driving spring 522 is opened laterally on the inner wall of the driving rod channel 513, and the driving spring 522 is arranged in the inwardly extending channel 515, Moreover, it is arranged in close contact with the inner extension channel 515, which can generate stable elastic force in the circumferential direction.

The rotating seat 511 is connected with the fixing frame 512 through a bearing 54 , the outer ring of the bearing 54 is connected with the fixing frame 512 , and the inner ring of the bearing 54 is connected with the driving rod channel of the rotating seat 511 . 513 is connected to the outer wall, which can not only ensure the stability of the rotating seat 511 and the fixing frame 512 in the radial direction, but also reduce the relative rotation resistance between the two.

The outer ring of the bearing is tightly connected with the entire fixed frame 512 through the annular pressure plate, and the inner ring and the rotating seat 511 can be connected with the outer wall of the drive rod channel to form a rotary motion body, that is, the rotating seat 511 is the pin puller interface platform. It is integrated with the drive block and the pin puller, and can rotate along the rotation axis of the inner ring of the bearing.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present application.

Claims (10)

1. A redundant multi-unlocking drive separating and releasing device is characterized in that, comprising: The housing (10) has a cavity (11), the separation end (A) of the cavity (11) is provided with a separation port (12), and the unlocking end (B) of the cavity (11) is provided with an installation mouth(13); A separation bolt (1), one end of the separation bolt (1) extends out of the separation port (12) to connect the components to be separated; a split nut (2), arranged inside the cavity (11), the split nut (2) is used for radially clamping the other end of the separation bolt (1); A radial limiting device (20) is provided on the outer peripheral side of the split nut (2), and the radial limiting device (20) is used to limit the radial opening of the split nut (2) to The separating bolt (1) is fixed, one end of the radial limiting device (20) is connected to the inner wall of the separating end (A) through a release spring (3), and the radial limiting device (20) ) is provided with a space structure that allows the split nut (2) to enter after radial expansion, and the split nut (2) can be radially expanded at least when the release spring (3) is in a free state. open; a lining frame (4), one end of which is fixed on the inner wall of the installation opening (13) of the unlocking end (B), and the other end is located inside the cavity (11); A locking device (30) for connecting and locking the inner lining frame (4) with the end of the radial limiting device (20), so as to limit the movement of the radial limiting device (20) Axial movement makes the release spring (3) in a compressed state, and the locking device (30) can release the inner lining frame (4) and the radial limiting device (20) through radial movement ) in the locked state; An integrated unlocking device includes an unlocking implementing mechanism (40) and an unlocking operating mechanism (50), the unlocking implementing mechanism (40) is connected with the locking device (30), and the unlocking operating mechanism (50) is fixed on the locking device (30). The installation port (13) is partially located outside the cavity (11); The unlocking actuator (40) is used to limit the radial movement of the locking device (30) in an initial state, and can release the restriction on the radial movement of the locking device (30) by moving, so as to enabling the radial limiting device (20) to move axially under the elastic force of the release spring (3) in a compressed state to release the radial restriction on the split nut (2); The unlocking operating mechanism (50) includes at least one structure for driving the unlocking actuator (40) to move to release the locking state of the locking device (30). 2. A redundant multi-unlocking drive separating and releasing device according to claim 1, characterized in that, The radial limiting device (20) is sleeved on the outer peripheral side of the lining frame (4), and the unlocking actuator (40) includes a driving block (41) and a driving rod (42), the driving block (41) is arranged inside the lining frame (4) and is in close contact with the inner wall of the lining frame (4), and one end of the driving rod (42) is connected to the unlocking operation through the installation port (13) a mechanism (50), the other end of the driving rod (42) is connected to the driving block (41) and drives the driving block (41) to move axially inside the lining frame (4); The locking device (30) comprises a locking hole (31) provided on the inner wall of the radial limiting device (20), a through hole (32) provided on the side wall of the lining frame (4), and A steel ball (33), the steel ball can be located in the locking hole (31) and the through hole (32) at the same time, so as to limit the axial movement of the radial limiting device (20), the driving block The side wall of (41) can close the through hole (32) to limit the movement of the steel ball (33). The unlocking operating mechanism (50) makes the driving block (41) rotate or move axially The side wall of the driving block (41) releases the restriction on the radial movement of the steel ball (33) in the through hole (32). 3. A redundant multi-unlocking drive separating and releasing device according to claim 2, characterized in that, The unlocking operating mechanism (50) includes a fixing mechanism (51), a pin-pulling unlocking mechanism (52) and a steering unlocking mechanism (53); The fixing mechanism (51) includes a rotating seat (511) and a fixing frame (512), one end of the fixing frame (512) is fixedly connected to the side wall of the installation opening (13), and the rotating seat (511) A driving rod channel (513) is provided in the center of the rotating seat (511), and the driving rod (42) can be rotated in the driving rod channel (513) inside the fixing frame (512). ) in the axial movement; The pin-pulling and unlocking mechanism (52) includes a pin-puller (521) and a driving spring (522), the driving spring (522) is provided on the outer peripheral side of the driving rod (42), and the driving spring (522) One end is connected to the bottom of the drive block (41), the other end is connected to the drive rod channel (513), the side of the drive rod (42) has a pin hole (523), and the drive rod channel The side wall of (513) is provided with a pin-pulling channel (524) for setting the pin-puller (521), and the pin-pulling end of the pin-puller (521) is connected in the pin hole (523) to restrict The axial movement of the drive rod (42) makes the drive spring (522) in a compressed state, and the drive rod (42) faces when the pin puller (521) is disengaged from the pin hole (523) The separating end is moved axially, so that the side wall surface of the driving block (41) is separated from the position of the through hole (32); The steering unlocking mechanism (53) includes an unlocking motor (531) and a steering unlocking hole (532), and the steering unlocking hole (532) is provided on the side wall of the driving block (41) and is offset from the through hole (32). position, the unlocking motor (531) is arranged on the fixing frame (512), and the main shaft of the unlocking motor (531) is fixedly connected with the rotating seat (511) to drive the entire rotating seat (511). 511) to rotate, thereby driving the driving rod (42) and the driving block (41) to rotate, so that the steering unlocking hole (532) is turned to be in direct communication with the through hole (32), and the diameter Under the force of the release spring (3), the limiting device (20) can apply an oblique thrust to the steel ball (33), so that the steel ball (33) can move toward the steering unlocking hole (532) radial movement, and the steering unlocking hole (532) can make the steel ball (33) completely disengage from the locking hole (31). 4. A redundant multi-unlocking drive separating and releasing device according to claim 1 or 3, characterized in that, The radial limiting device (20) includes a compression hoop (21) and a locking hoop (22), and the compression hoop (21) and the locking hoop (22) pass through The partition plate (23) is connected; The release spring (3) is arranged around the entire outer peripheral side of the compression hoop (21), and the end of the release spring (3) is connected to the partition plate (23) toward the compression hoop (21). ) part extending outside; the locking hoop (22) is sleeved on the outer peripheral side of the lining frame (4), and the locking hole (31) is provided on the inner wall of the locking hoop (22) ; A first concave-convex block (24) is provided on the inner wall of the pressing hoop (21), and a second concave-convex block (25) is provided on the outer wall of the split nut (2). The first concave-convex block (24) ) and the second concave-convex block (25) both form a concave-convex alternating structure at upper and lower positions in the circumferential direction, and the first concave-convex block (24) and the second concave-convex block (25) are limited in the radial direction The device (20) is positioned opposite to each other in a state in which the split nut (2) is restricted radially open, and the axial movement of the radial limiting device (20) releases the pressure on the split nut (2). Displacement during restriction, so that the convex part of the second concave-convex block (25) enters the concave part of the first concave-convex block (24). 5. A redundant multi-unlocking drive separating and releasing device according to claim 4, characterized in that, A nut pulling rod (26) is arranged on the partition plate (23), and the other end of the nut pulling rod (26) extends into the end of the split nut (2) away from the separation port (12), And the nut pulling rod (26) is used to spread the inside of the split nut (2) when the radial limiting device (20) moves axially. 6. A redundant multi-unlocking drive separating and releasing device according to claim 3, characterized in that, An annular groove (34) is formed between the driving rod (42) and the inner wall of the lining frame (4), and the driving block (41) releases the restriction on the steel ball (33) during the axial movement , and make the steel ball (33) move radially to the annular groove (34). 7. A redundant multi-unlocking drive separating and releasing device according to claim 3, characterized in that, A pin pulling unlocking hole (35) is provided on the side wall of the driving block (41), and the pulling pin unlocking hole (35) is located below the steering unlocking hole (532) and is connected with the steering unlocking hole (532) In an axially staggered arrangement, the pin-pulling unlocking hole (35) is displaced in the same axial direction as the through hole (32) in the locked state, and the pin-pulling and unlocking hole (35) can be the steel ball ( 33) Provide a space for radial movement, so that the steel ball (33) can be completely disengaged from the locking hole (31). 8. A redundant multiple unlocking drive separation release device according to claim 3, characterized in that, A pin-pulling opening (514) is laterally opened on the fixing frame (512), the pin-puller (521) is partially disposed in the pin-pulling opening (514), and the pin-puller (521) The pin-pulling opening (514) can rotate in the circumferential direction of the pin-pulling opening (514). 9. A redundant multi-unlocking drive separating and releasing device according to claim 3, characterized in that, An inwardly extending channel (515) for accommodating the driving spring (522) is opened laterally on the inner wall of the driving rod channel (513), and the driving spring (522) is disposed in the inwardly extending channel (515). 10. A redundant multiple unlocking drive separation release device according to claim 3, characterized in that: The rotating seat (511) is connected with the fixing frame (512) through a bearing (54), the outer ring of the bearing (54) is connected with the fixing frame (512), and the inner ring of the bearing (54) is connected with the fixing frame (512). It is connected with the outer wall of the driving rod channel (513) of the rotating seat (511).

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