A low-impact, small-disturbance release separation device and release separation system

Abstract

The application provides a low-impact small-disturbance release separation device and system, which comprises a separation follow-up end assembly, a connecting fixed end assembly and a pyrotechnic separation nut assembly; the separation follow-up end assembly comprises a separation support, and a connecting bolt is installed on the separation support in an axial direction; the connecting fixed end assembly comprises at least a pressing support, a shell, a limiting piece and a separation spring; the pyrotechnic separation nut assembly comprises an initiating device, a piston, a sleeve and a nut segment; when the initiating device is not detonated, the sleeve radially restricts the nut segment, and the connecting bolt applies an axial pre-tightening load to the separation support and the pressing support; when the initiating device is detonated, high-temperature and high-pressure gas drives the sleeve to move downward in an axial direction, the sleeve releases the radial restriction on the nut segment, the nut segment is radially expanded and the connecting bolt is released, and the separation spring drives the separation support and the pressing support to be ejected and separated. The application can realize low-impact and high-precision on-orbit separation functions and meet the requirements of rapid, high-precision and low-disturbance separation tasks.

Description

Technical Field

[0001] This invention relates to the field of spacecraft technology, and in particular to a release and separation device and system with low impact and minimal disturbance. Background Technology

[0002] In modern space missions, spacecraft or launch vehicles typically undergo numerous on-orbit separation tasks after entering orbit, deploying carried separation targets in orbit, such as module separation, small satellite separation, reentry vehicle separation, and payload separation. The release and separation system, as a critical component in separating the separation target from the spacecraft or launch vehicle, faces the functional requirement of securing the separation target to the spacecraft or launch vehicle during launch and releasing and separating the separation target from the spacecraft or launch vehicle after entering orbit.

[0003] During launch, the release separation system can maintain the mechanical connection between the separated target and the spacecraft or launch vehicle, ensuring sufficient connection strength and rigidity at each connection point, and transmitting and bearing the mechanical loads during the launch and other phases.

[0004] After entering orbit, the release and separation system can realize the mechanical release and separation between the separation target and the spacecraft or launch vehicle, ensure the release and disengagement of the mechanical connection, and complete the relative separation motion through means such as spring ejection, so as to enable the separation target to safely separate from the spacecraft or launch vehicle at a controllable speed and attitude.

[0005] During separation, the target will experience a certain separation velocity due to the thrust, but the release impact, thrust, and deviations in center of mass and inertia will inevitably result in a separation attitude angular velocity. During the separation process from the spacecraft or launch vehicle, it is crucial to avoid introducing additional disturbance torques and excessive impact loads to the target to ensure its attitude and the safety of impact-sensitive components, thus laying the foundation for its subsequent flight.

[0006] Typically, release and separation systems are customized devices for a specific separation target. However, with the diversification of space-based separation targets, there is a need for standardization and universalization of release and separation systems. Summary of the Invention

[0007] This invention provides a release and separation device and system with low impact and small disturbance to solve the technical problem that the release and separation system brings additional disturbance torque and excessive impact load to the separation target.

[0008] The technical solution provided by this invention is as follows:

[0009] One object of the present invention is to provide a release and separation device with low impact and low disturbance, the release and separation device comprising: a separation follower end assembly, a connection and fixing end assembly, and a fire-resistant separation nut assembly;

[0010] The separation follower end assembly includes a separation bracket, and a connecting bolt is mounted on the separation bracket along the axial direction;

[0011] The connection fixing end assembly includes at least a clamping support, a housing, a limiting member, and a separation spring; the clamping support is fixed to the housing, and the limiting member is fixed to the housing; a separation spring is installed between the separation bracket and the clamping support;

[0012] The housing has an axial column extending along the axial direction inside, and the axial column is hollow to form a first channel; the housing has an installation channel opened in the radial direction.

[0013] The pyrotechnic separation nut assembly includes an initiation device, a piston, a sleeve, and a nut disc. The initiation device is installed in the mounting channel of the housing, thereby forming a sealed explosion space within the mounting channel.

[0014] A cavity is formed inside the piston, and the cavity is connected to the first channel; the explosion space is also connected to the first channel.

[0015] One end of the sleeve is slidably mounted on the axial column, and the other end of the sleeve abuts against the limiting member; the piston is slidably mounted inside the sleeve, and a second channel is formed between the bottom end face of the piston and the axial column;

[0016] The nut flap is slidably installed inside the sleeve, and one end of the nut flap contacts the piston; the connecting bolt passes through the limiting member and is connected to the end of the nut flap away from the piston, and the end of the nut flap connected to the connecting bolt abuts against the limiting member;

[0017] When the detonation device is not detonated, the sleeve radially constrains the nut flap, preventing the nut flap from expanding radially. The connecting bolt applies an axial preload to the separation bracket and the clamping support. The separation bracket and the clamping support compress the separation spring, putting the separation spring in a compressed state.

[0018] When the detonation device is detonated, the high-temperature and high-pressure gas flows through the explosion space, the first channel and the second channel, driving the sleeve to move axially downward. The sleeve releases the radial constraint on the nut, causing the nut to expand radially and release the connecting bolt. The separation spring drives the separation bracket to eject and separate from the clamping support.

[0019] In a preferred embodiment, the separation bracket has a buffer cavity; an anti-escape hoop is fixed to one side of the buffer cavity located on the end face of the separation bracket.

[0020] The buffer cavity is provided with a support ball pad, a locking nut, a pull rod spring, and a spring cover; the spring cover is connected to the connecting bolt, the locking nut is connected to the connecting bolt, the support ball pad is arranged between the locking nut and the separation bracket, and the pull rod spring is arranged between the spring cover and the separation bracket;

[0021] The connecting bolt passes through the supporting ball pad and the limiting member, and is connected to the end of the nut flap away from the piston;

[0022] When the nut flap expands radially and releases the connecting bolt, the pull rod spring drives the spring cover to move axially upward in the buffer cavity, and the spring cover drives the connecting bolt and the locking nut to move axially upward in the buffer cavity;

[0023] When the spring cover moves axially upward to its limit position within the buffer cavity, the anti-escape ring limits the spring cover to prevent the connecting bolt from coming out of the separation bracket.

[0024] In a preferred embodiment, an outer spring cylinder is fixed on the clamping support, and an inner spring cylinder is slidably installed inside the outer spring cylinder with one end of the inner spring cylinder extending out of the outer spring cylinder.

[0025] One end of the inner spring cylinder extending from the outer spring cylinder abuts against the separation bracket, and the separation spring is installed inside the inner spring cylinder, so that the separation spring is installed between the separation bracket and the clamping support.

[0026] In a preferred embodiment, a buffer aluminum pad is provided on the end face of the sleeve that is slidably mounted on one end of the axial column;

[0027] When the detonation device is detonated, the high-temperature and high-pressure gas drives the sleeve to move downward along the axial direction. The sleeve compresses and deforms the buffer aluminum pad, causing the buffer aluminum pad to deform and fill the gap between the moving pair between the sleeve and the axial column.

[0028] In a preferred embodiment, a shock-absorbing pad is fixed to the end face of the separation bracket. The shock-absorbing pad is made of metal rubber that is wound, woven, and molded from stainless steel wire.

[0029] In a preferred embodiment, a vibration isolation ring is fixed to the end face of the clamping support. The vibration isolation ring is made of metal rubber that is wound, woven and molded from stainless steel wire.

[0030] In a preferred embodiment, the separation bracket and the clamping support are made of a high-damping alloy material.

[0031] In a preferred embodiment, the detonation device uses pyrotechnic powder as the detonating agent.

[0032] In a preferred embodiment, a signal switch is installed on the outside of the clamping support.

[0033] Another object of the present invention is to provide a low-impact, low-disturbance modular release separation system, the release separation system comprising an array of multiple release separation devices provided by the present invention.

[0034] The above-described technical solution of the present invention has at least the following beneficial effects compared with the prior art:

[0035] This invention provides a low-impact, low-disturbance release and separation device and system, which can achieve low-impact, high-precision on-orbit separation, meet the requirements of rapid, high-precision, and low-disturbance separation of the target, and has broad adaptability to separation targets of different shapes and weights.

[0036] This invention provides a low-impact, low-disturbance release and separation device and system. The nut segment of the pyrotechnic separation nut assembly is connected to a connecting bolt. A sleeve radially constrains the nut segment, preventing radial expansion and allowing the connecting bolt to apply an axial preload to the separation bracket and the clamping support. High-temperature, high-pressure gas drives the sleeve to move axially downwards, releasing the radial constraint on the nut segment, causing it to expand radially and release the connecting bolt. A separation spring then drives the separation bracket to eject from the clamping support. The pyrotechnic separation nut assembly employs a "strong axial connection, weak radial unlocking" principle, allowing the detonating device to use pyrotechnics with better combustion effects and lower output energy as the detonating agent. The reduced output energy of the pyrotechnics significantly reduces the impact load and simultaneously solves the pollution problem caused by gunpowder combustion products.

[0037] This invention provides a low-impact, low-disturbance release and separation device and system. A buffer aluminum pad is mounted on the end face of a sleeve slidably installed on one end of an axial column. When the detonating device is activated, the high-temperature, high-pressure gas drives the sleeve to move downwards axially. The sleeve deforms by compressing the buffer aluminum pad, which then fills the gap between the sleeve and the axial column. The buffer aluminum pad serves two purposes: firstly, it buffers the impact energy of the sleeve on the housing; secondly, its deformation and filling of the gap between the sleeve and the axial column further enhances the sealing effect.

[0038] This invention provides a low-impact, low-disturbance release and separation device and system. The separation bracket and the clamping support adopt a nested guide with an inner spring cylinder and an outer spring cylinder to ensure the separation posture of the separation target during the separation process. This avoids the rolling posture of the separation target from exceeding the tolerance caused by the simultaneous action of multiple separation springs in the array of release and separation devices.

[0039] This invention provides a low-impact, low-disturbance release and separation device and system. An anti-escape ring is fixed to one side of the buffer chamber located on the end face of the release bracket. The buffer chamber contains a support ball pad, a locking nut, a pull rod spring, and a spring cap. When the nut expands radially and releases the connecting bolt, the pull rod spring drives the spring cap to move axially upward within the buffer chamber. The spring cap then drives the connecting bolt to move axially upward within the buffer chamber. The anti-escape ring limits the spring cap, preventing the connecting bolt from detaching from the release bracket and preventing it from oscillating freely and interfering with the separation movement.

[0040] This invention provides a low-impact, low-disturbance release and separation device and system. It employs multi-scale buffering and vibration isolation measures, such as shock-reducing pads and vibration isolation rings in the connection force transmission path, and high-damping alloy materials for the separation bracket and clamping support structure. These measures significantly attenuate the high-frequency impact generated when the pyrotechnic separation nut assembly is actuated, effectively dissipate or block the stress wave transmission path, ensure low-level unlocking impact function, and avoid impact damage to the highly sensitive equipment of the separation target during release and separation.

[0041] This invention provides a low-impact, low-disturbance release and separation device and system. The release and separation system unlocks and releases with high synchronization at the ignition points of each release and separation device in an array layout. Each release and separation device utilizes the advantages of adjustable, measurable, and screenable spring force. It adopts a design method of balancing the combined torque of large and small springs to ensure the nominal separation posture. With the aid of structural rigidity guidance measures, it achieves low-disturbance, high-precision ejection separation of the target.

[0042] This invention provides a release and separation device and system with low impact and minimal disturbance. It can be arranged in an island-style connection layout according to the distribution of the connection surfaces of the separation target, and is not limited by the spatial area of ​​the connection surface layout, thus having a wider range of applications. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1This is a schematic diagram of the release and separation device with different array layouts in a modular release and separation system of the present invention, which is characterized by low impact and low disturbance.

[0045] Figure 2 This is a schematic diagram of the overall structure of a low-impact, low-disturbance release and separation device according to the present invention.

[0046] Figure 3 This is a cross-sectional view of a release and separation device with low impact and minimal disturbance according to the present invention.

[0047] Figure 4 This is an enlarged view of the sleeve of the present invention being slidably mounted on an axial column.

[0048] Figure 5 yes Figure 3 Cross-sectional view along the AA direction. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0050] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” or “including,” and similar terms mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. The terms “connected,” “linked,” or “connected,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0051] It should be noted that the terms "up", "down", "left", "right", "front", and "back" used in this invention are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0052] Combination Figure 1According to an embodiment of the present invention, a low-impact, low-disturbance modular release separation system is provided, comprising multiple release separation devices arranged in an array (the release separation devices are described in detail below).

[0053] This invention discloses a low-impact, low-disturbance modular release and separation system, which adaptively arranges the release and separation device according to the shape, weight, and interface of the target to be separated. For example... Figure 1 As shown, the left side shows a layout of three release separation devices, the middle side shows a layout of six release separation devices in parallel, and the right side shows a layout of six release separation devices in a ring.

[0054] like Figure 2 As shown, according to an embodiment of the present invention, a low-impact, low-disturbance release and separation device includes: a separation follower-end assembly 1, a connection and fixing end assembly 2, and a pyrotechnic separation nut assembly 3. The separation follower-end assembly 1 is fixedly connected to the separation target, and the connection and fixing end assembly 2 is fixedly connected to a spacecraft or launch vehicle. The pyrotechnic separation nut assembly 3 is used to connect or release the separation follower-end assembly 1 and the connection and fixing end assembly 2, thereby connecting or releasing the separation target from the spacecraft or launch vehicle.

[0055] Combination Figure 2 , Figure 3 and Figure 4 According to an embodiment of the present invention, the separation follower end assembly 1 includes a separation bracket 11, and a connecting bolt 14 is mounted on the separation bracket 11 along the axial direction. The separation target is fixedly connected to the end face of the separation bracket 11, thereby fixing the separation follower end assembly 1 to the separation target.

[0056] The connection and fixing end assembly 2 includes at least a clamping support 21, a housing 26, a limiting member 28, and a separation spring 23. The clamping support 21 is fixed to the housing 26, and the limiting member 28 is also fixed to the housing 26. The separation spring 23 is installed between the separation bracket 11 and the clamping support 21. The spacecraft or launch vehicle is fixedly connected to the end face of the clamping support 21, thereby fixing the connection and fixing end assembly 2 to the spacecraft or launch vehicle.

[0057] Furthermore, a spring outer cylinder 25 is fixed on the clamping support 21, and a spring inner cylinder 24 is slidably installed inside the spring outer cylinder 25, with one end of the spring inner cylinder 24 extending out of the spring outer cylinder 25. The end of the spring inner cylinder 24 extending out of the spring outer cylinder 25 abuts against the separation bracket 11, and a separation spring 23 is installed inside the spring inner cylinder 24, so that the separation spring 23 is installed between the separation bracket 11 and the clamping support 21.

[0058] like Figure 3 As shown, the housing 26 has an axial column 261 extending along the axial direction inside, and the axial column 261 is hollow to form a first channel T1.

[0059] like Figure 3 As shown, the pyrotechnic separation nut assembly 3 includes an initiating device Q, an igniter 31, a piston 32, a sleeve 33, and a nut disc 34. The housing 26 has a radially opening mounting channel, and the initiating device Q is installed in the mounting channel of the housing 26, forming a sealed explosion space B within the mounting channel. The initiating device Q is connected to the igniter 31, which is used to detonate the initiating agent within the initiating device Q. The initiating device Q of this invention uses pyrotechnic powder as the initiating agent.

[0060] A cavity K is opened inside the piston 32, which is connected to the first channel T1. The explosion space B is also connected to the first channel T1.

[0061] Combination Figure 3 and Figure 4 One end of the sleeve 33 is slidably mounted on the axial column 261, and the other end of the sleeve 33 abuts against the limiting member 28. The piston 32 is slidably mounted inside the sleeve 33, and a second channel T2 is formed between the bottom end face of the piston 32 and the axial column 261, such as... Figure 4 As shown.

[0062] Combination Figure 3 and Figure 5 The nut flap 34 is slidably installed inside the sleeve 33. One end of the nut flap 34 contacts the piston 32. The connecting bolt 14 passes through the limiting member 28 and is connected to the end of the nut flap 34 away from the piston 32. The end of the nut flap 34 connected to the connecting bolt 14 abuts against the limiting member 28.

[0063] Specifically, the limiting member 28 has an axial opening, and the connecting bolt 14 passes through the axial opening of the limiting member 28 and is threadedly connected to the end of the nut piece 34 away from the piston 32. In this embodiment, the nut piece 34 is cut into three pieces from a complete internally threaded nut, such as... Figure 5 As shown.

[0064] When the detonation device Q is not detonated, the sleeve 33 radially constrains the nut flap 34, preventing the nut flap 34 from expanding radially. The connecting bolt 14 applies an axial preload to the separation bracket 11 and the clamping support 21, so that the separation target and the spacecraft or launch vehicle are separated by the axial preload applied by the separation bracket 11 and the clamping support 21.

[0065] The connecting bolt 14 applies an axial preload to the separation bracket 11 and the clamping support 21, and the separation bracket 11 and the clamping support 21 squeeze the separation spring 23, so that the separation spring 23 is in a compressed state.

[0066] When the igniter 31 detonates the initiating agent in the detonating device Q, the high-temperature, high-pressure gas flows through the explosion space B, the first channel T1, and the second channel T2, driving the sleeve 33 to move axially downwards (as shown in the image). Figure 3and Figure 4 (As shown by arrow a) Sleeve 33 releases the radial constraint on nut flap 34, causing nut flap 34 to expand radially and release connecting bolt 14. Separation spring 23 drives separation bracket 11 to eject from clamping support 21, thereby ejecting the separation target from the spacecraft or launch vehicle.

[0067] In this invention, the nut flap 34 of the pyrotechnic separation nut assembly 3 is connected to the connecting bolt 14. The sleeve 33 radially constrains the nut flap 34, preventing it from expanding radially, thus allowing the connecting bolt 14 to apply an axial preload to the separation bracket 11 and the clamping support 21. Driven by high-temperature, high-pressure gas, the sleeve 33 moves axially downwards, releasing the radial constraint on the nut flap 34, causing it to expand radially and release the connecting bolt 14. The separation spring 23 then drives the separation bracket 11 to eject and separate from the clamping support 21. This invention's pyrotechnic separation nut assembly 3 employs the concept of "strong axial connection and weak radial unlocking," enabling the detonating device Q to use pyrotechnic powder with better combustion effects and lower output energy as the detonating agent. The reduction in the output energy of the pyrotechnic powder significantly reduces the impact load and simultaneously solves the pollution problem caused by the combustion products of the gunpowder.

[0068] Furthermore, the sleeve 33 is fixed to the housing 26 by a connecting pin 27. When the detonating device Q is detonated, the high-temperature and high-pressure gas flows through the explosion space B, the first channel T1, and the second channel T2, driving the sleeve 33 to move axially downward (e.g., Figure 3 and Figure 4 During the process (as indicated by the middle arrow a), the connecting pin 27 is forced to fail, thereby allowing the sleeve 33 to move smoothly downwards along the axial direction (as shown by the middle arrow a). Figure 3 and Figure 4 (As indicated by the middle arrow a).

[0069] During the ejection separation process of the separation spring 23 driving the separation bracket 11 and the clamping support 21, the separation spring 23 drives the inner spring cylinder 24 to slide within the outer spring cylinder 25 for a certain distance. The inner spring cylinder 24 extends out of the outer spring cylinder 25 and abuts against one end of the separation bracket 11, ejecting the separation bracket 11 and the clamping support 21. The separation bracket 11 and the clamping support 21 are guided by the nested spring cylinder 24 and the outer spring cylinder 25, ensuring the separation posture of the separation target during the separation process. This avoids the separation system from causing the rolling posture of the separation target to exceed the tolerance caused by the simultaneous action of multiple separation springs 23 in the array layout.

[0070] like Figure 3As shown, a connecting bolt 14 is installed on the separation bracket 11 along the axial direction. The nut flap 34 expands radially and releases the connecting bolt 14. During the process of the separation spring 23 driving the separation bracket 11 to eject and separate from the clamping support 21, the connecting bolt 14 separates from the connecting fixed end assembly 2 together with the separation follower end assembly 1. The free oscillation of the connecting bolt 14 interferes with the separation movement of the separation bracket 11 and the clamping support 21.

[0071] To address the issue of the separation motion between the connecting bolt 14 and the clamping support 21 due to free oscillation interference. For example... Figure 3 As shown, the separation bracket 11 of the present invention has a buffer cavity H. An anti-escape hoop 13 is fixed on one side of the buffer cavity H located on the end face of the separation bracket 11.

[0072] The buffer chamber H is equipped with a support ball pad 15, a locking nut 16, a pull rod spring 17, and a spring cover 18.

[0073] The spring cap 18 is connected to the connecting bolt 14, the locking nut 16 is connected to the connecting bolt 14, the support ball pad 15 is arranged between the locking nut 16 and the separation bracket 11 (the lower surface of the buffer cavity H of the separation bracket 11), and the pull rod spring 17 is arranged between the spring cap 18 and the separation bracket (the lower surface of the buffer cavity H of the separation bracket 11).

[0074] The connecting bolt 14 passes through the support ball pad 15 and the limiting member 28, and is connected to the end of the nut flap 34 away from the piston 32. Specifically, the support ball pad 15 has an axial opening, and the connecting bolt 14 passes through the axial opening of the support ball pad 15 and the limiting member 28, and is threadedly connected to the end of the nut flap 34 away from the piston 32.

[0075] When the nut flap 34 expands radially and releases the connecting bolt 14, the pull rod spring 17 drives the spring cover 18 to move axially upward in the buffer chamber H. The spring cover 18 drives the connecting bolt 14 and the locking nut 16 to move axially upward in the buffer chamber H.

[0076] When the spring cover 18 moves axially upward to its limit position in the buffer chamber H, the anti-escape ring 13 limits the spring cover 18 to prevent the connecting bolt 14 from coming out of the separation bracket 11, and also prevents the connecting bolt 14 from freely oscillating and interfering with the separation movement.

[0077] Combination Figure 3 and Figure 4 According to an embodiment of the present invention, a buffer aluminum pad 331 is provided on the end face of the sleeve 33 slidably mounted on one end of the axial column 261. When the detonating device Q is detonated, the high-temperature and high-pressure gas drives the sleeve 33 to move downward along the axial direction (e.g., Figure 3 and Figure 4When the middle arrow a is pointed out, the sleeve 33 compresses and deforms the buffer aluminum pad 331, causing the buffer aluminum pad 331 to deform and fill the gap between the sleeve 33 and the axial column 261.

[0078] In this invention, a buffer aluminum pad 331 is provided on the end face of the sleeve 33 slidably installed on one end of the axial column 261. When the high-temperature and high-pressure gas drives the sleeve 33 to move downward along the axial direction, the buffer aluminum pad 331 buffers the impact energy of the sleeve 33 on the housing 26 on the one hand, and deforms and fills the gap between the moving pair between the sleeve 33 and the axial column 261 on the other hand, blocking the gap between the sleeve 33 and the axial column 261, and further enhancing the sealing effect.

[0079] like Figure 3 As shown, according to an embodiment of the present invention, a shock-absorbing pad 12 is fixed to the end face of the separation bracket 11. The shock-absorbing pad 12 is made of metal rubber, which is wound, woven, and molded from stainless steel wire. A vibration isolation ring 22 is fixed to the end face of the clamping support 21. The vibration isolation ring 22 is made of metal rubber, which is wound, woven, and molded from stainless steel wire. Both the separation bracket 11 and the clamping support 21 are made of high-damping alloy material.

[0080] The impact-reducing pad 12 and vibration isolation ring 22 made of metal rubber of the present invention achieve a large damping ratio. At the same time, the stiffness of the metal rubber can be changed by adjusting the pre-compression amount of the metal rubber to attenuate the transmission of impact load from the impact source to the separation target.

[0081] This invention employs multi-scale buffering and vibration isolation measures, such as shock-reducing pads 12 and vibration isolation rings 22 in the connection force transmission path, and high-damping alloy materials for the separation bracket 11 and clamping support 21 structure. These measures significantly attenuate the high-frequency impact generated when the pyrotechnic separation nut assembly 3 is actuated, effectively dissipate or block the stress wave transmission path, ensure low-level unlocking impact function, and avoid impact damage to the highly sensitive equipment of the separation target during release and separation.

[0082] Furthermore, as shown in Figure 2, a signal switch 29 is installed on the outer side of the clamping support 21. The signal switch 29 can provide a separation positioning feedback signal to the spacecraft or launch vehicle, meeting the status determination requirements for the separation target's connection or separation.

[0083] Back Figure 1 This invention discloses a low-impact, low-disturbance modular release and separation system. Multiple release and separation devices, arranged in an array, ensure the system's connection and separation functions through coordinated operation. Based on the connection / separation points and centroid distribution of the separation target, a method of balancing the resultant torque using large and small spring forces is employed to guarantee the nominal working condition separation posture.

[0084] This invention's release-separation system features highly synchronized unlocking and release at the ignition points of each release-separation device in an array layout. Each release-separation device utilizes the advantages of adjustable, measurable, and screenable spring forces, employing a design method that balances the resultant torque of large and small springs to ensure the nominal separation posture. Supplemented by structural rigidity guiding measures, it achieves low-disturbance, high-precision ejection separation of the target. This invention's release-separation device can be arranged in an island-like connection layout according to the distribution of the target's connection surfaces, without being limited by the spatial area of ​​the connection surface layout, thus broadening its applicability.

[0085] The following points need to be explained:

[0086] (1) The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention. Other structures can refer to the general design.

[0087] (2) For clarity, the thickness of layers or regions is enlarged or reduced in the drawings used to describe embodiments of the invention, i.e., these drawings are not drawn to scale. It is understood that when an element such as a layer, film, region or substrate is referred to as being “above” or “below” another element, the element may be “directly” located “above” or “below” the other element or there may be intermediate elements.

[0088] (3) Where there is no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0089] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A low-impact, low-disturbance release and separation device, characterized in that, The release separation device includes: a separation follower end assembly, a connection fixed end assembly, and a fire-resistant separation nut assembly; The separation follower end assembly includes a separation bracket, and a connecting bolt is mounted on the separation bracket along the axial direction; The connection fixing end assembly includes at least a clamping support, a housing, a limiting member, and a separation spring; the clamping support is fixed to the housing, and the limiting member is fixed to the housing; a separation spring is installed between the separation bracket and the clamping support; The housing has an axial column extending along the axial direction inside, and the axial column is hollow to form a first channel; the housing has an installation channel opened in the radial direction. The pyrotechnic separation nut assembly includes an initiation device, a piston, a sleeve, and a nut disc. The initiation device is installed in the mounting channel of the housing, thereby forming a sealed explosion space within the mounting channel. A cavity is formed inside the piston, and the cavity is connected to the first channel; the explosion space is also connected to the first channel. One end of the sleeve is slidably mounted on the axial column, and the other end of the sleeve abuts against the limiting member; the piston is slidably mounted inside the sleeve, and a second channel is formed between the bottom end face of the piston and the axial column; The nut flap is slidably installed inside the sleeve, and one end of the nut flap contacts the piston; the connecting bolt passes through the limiting member and is connected to the end of the nut flap away from the piston, and the end of the nut flap connected to the connecting bolt abuts against the limiting member; When the detonation device is not detonated, the sleeve radially constrains the nut flap, preventing the nut flap from expanding radially. The connecting bolt applies an axial preload to the separation bracket and the clamping support. The separation bracket and the clamping support compress the separation spring, putting the separation spring in a compressed state. When the detonation device is detonated, the high-temperature and high-pressure gas flows through the explosion space, the first channel and the second channel, driving the sleeve to move axially downward. The sleeve releases the radial constraint on the nut, causing the nut to expand radially and release the connecting bolt. The separation spring drives the separation bracket to eject and separate from the clamping support.

2. The release separation device according to claim 1, characterized in that, The separation bracket has a buffer cavity; an anti-escape hoop is fixed to one side of the buffer cavity located on the end face of the separation bracket. The buffer cavity is provided with a support ball pad, a locking nut, a pull rod spring, and a spring cover; the spring cover is connected to the connecting bolt, the locking nut is connected to the connecting bolt, the support ball pad is arranged between the locking nut and the separation bracket, and the pull rod spring is arranged between the spring cover and the separation bracket; The connecting bolt passes through the supporting ball pad and the limiting member, and is connected to the end of the nut flap away from the piston; When the nut flap expands radially and releases the connecting bolt, the pull rod spring drives the spring cover to move axially upward in the buffer cavity, and the spring cover drives the connecting bolt and the locking nut to move axially upward in the buffer cavity; When the spring cover moves axially upward to its limit position within the buffer cavity, the anti-escape ring limits the spring cover to prevent the connecting bolt from coming out of the separation bracket.

3. The release separation device according to claim 1, characterized in that, The outer spring cylinder is fixed on the clamping support, and the inner spring cylinder is slidably installed inside the outer spring cylinder with one end of the inner spring cylinder extending out of the outer spring cylinder. One end of the inner spring cylinder extending from the outer spring cylinder abuts against the separation bracket, and the separation spring is installed inside the inner spring cylinder, so that the separation spring is installed between the separation bracket and the clamping support.

4. The release separation device according to claim 1, characterized in that, A buffer aluminum pad is provided on the end face of the sleeve that is slidably installed at one end of the axial column; When the detonation device is detonated, the high-temperature and high-pressure gas drives the sleeve to move downward along the axial direction. The sleeve compresses and deforms the buffer aluminum pad, causing the buffer aluminum pad to deform and fill the gap between the moving pair between the sleeve and the axial column.

5. The release separation device according to claim 1, characterized in that, The end face of the separation bracket is fixed with a shock-absorbing pad, which is made of metal rubber made by winding, weaving and molding stainless steel wire.

6. The release separation device according to claim 1, characterized in that, The end face of the clamping support is fixed with a vibration isolation ring, which is made of metal rubber made by winding, weaving and molding stainless steel wire.

7. The release separation device according to claim 1, characterized in that, The separation bracket and the clamping support are made of high-damping alloy material.

8. The release separation device according to claim 1, characterized in that, The detonation device uses pyrotechnic powder as the detonating agent.

9. The release separation device according to claim 1, characterized in that, A signal switch is installed on the outside of the clamping support.

10. A low-impact, low-disturbance modular release and separation system, characterized in that, The release separation system includes a plurality of release separation devices according to any one of claims 1 to 9 arranged in an array.

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