A wraparound unlocking and separating device

Abstract

The application provides a band type unlocking separation device and relates to the technical field of aerospace. The band type unlocking separation device comprises a band structure, the band structure comprises a band body with elasticity and a clamping block, the clamping block limits a first cylinder structure and a second cylinder structure through a limiting groove, the band body is used for elastic deformation to abut against a first limiting protrusion and a second limiting protrusion through the clamping block, and the band type unlocking separation device further comprises a position keeping structure connected with both ends of the band body to keep the band body in an elastic deformation state. The both ends of the band structure are limited through the position keeping structure, and the first cylinder structure and the second cylinder structure are limited through the clamping block. When unlocking and separating, the position keeping structure is released from the limitation, the band structure is contracted and deformed, and unlocking and separation are realized. The application can be arranged on an inner wall and is more suitable for scenes with higher requirements on the smoothness of the outer surface of the cylinder structure.

Description

Technical Field

[0001] This invention relates to the field of aerospace technology, and more specifically, to a strap-type unlocking and separation device. Background Technology

[0002] For example, in cylindrical structures requiring unlocking and separation capabilities, such as those between spacecraft modules or missile stages, a strap-type unlocking and separation device is typically used for connection. Traditional strap-type unlocking and separation devices often utilize pyrotechnic components, which have numerous drawbacks, including poor safety performance, high impact loads, difficulty in reuse, and significant environmental pollution. Furthermore, the position-holding structure (which maintains the shape of the strap to lock the connected modules or missile body) is usually located on the outer surface of the cylindrical structure, resulting in an uneven surface and affecting flight performance. As requirements for safety, impact loads, environmental protection, and flight performance in related products become increasingly stringent, traditional strap-type unlocking and separation devices are becoming increasingly unsuitable. Summary of the Invention

[0003] The problem addressed by this invention is how to improve the applicability of the strap-type unlocking and separation device.

[0004] To address the aforementioned problems, the present invention provides a strap-type unlocking and separation device, comprising a strap structure and a position holding structure. The strap structure includes an elastic strap body and a clamping block. The clamping block is provided with a limiting groove, which is used to insert into a first limiting protrusion on the inner wall of a first cylindrical structure and a second limiting protrusion on the inner wall of a second cylindrical structure. The strap body is used to undergo elastic deformation to abut against the first and second limiting protrusions through the clamping block. The position holding structure is used to connect to both ends of the strap body to keep the strap body in an elastically deformed state.

[0005] Optionally, the position holding structure includes a locking rope and a pair of hinged links, one end of each link having a split clamp, the two split clamps being used to clamp both ends of the strip body, and the other ends of the two links being connected by the locking rope in a taut state.

[0006] Optionally, the position holding structure further includes an unlocker disposed on the connecting rod, the unlocker being used to disconnect the locking rope or to slack off the locking rope.

[0007] Optionally, the unlocker is a hot-blade unlocking device, which includes a bracket and a blade connected to each other. The bracket is mounted on the connecting rod, and the blade abuts against the locking rope. The blade is used to melt the locking rope.

[0008] Optionally, the locking rope is a Dyneema rope.

[0009] Optionally, it also includes at least one pair of auxiliary ropes, one end of which is connected to the position holding structure and the other end of which is connected to the strip structure, wherein each pair of auxiliary ropes is arranged symmetrically.

[0010] Optionally, the strip body is provided with connecting posts at both ends, and the connecting posts are used to clamp the two segmented clamping blocks.

[0011] Optionally, the strip structure further includes clamping nuts, each of the connecting posts being threadedly connected to at least two of the clamping nuts, and the two connecting posts being clamped to both ends of the strip body by the clamping nuts respectively.

[0012] Optionally, the two segmented clamping blocks are segmented nuts, which are used to form threaded holes for threaded connection with the connecting post.

[0013] Optionally, the strip body has an open ring structure, and a plurality of clamping blocks are evenly disposed on the circumferential sidewall of the strip body.

[0014] The wrap-around unlocking and separation device of the present invention uses the limiting groove of the clamping block to limit the first and second cylindrical structures. The position holding structure locks and fixes both ends of the strip structure, thereby achieving the locking and fixation between the first and second cylindrical structures, and thus achieving the locking and fixation between, for example, spacecraft compartments. During unlocking and separation, the position holding structure releases the locking and fixation of both ends of the strip structure. Since the strip body is elastic, it contracts and deforms to a certain extent, causing the connection between the clamping block and the first and second cylindrical structures to be released, thus achieving unlocking and separation between the first and second cylindrical structures. Furthermore, the wrap-around unlocking and separation device of this embodiment can be set on the inner wall. Compared with setting the strip structure on the outer wall of the first and second cylindrical structures, this solution is beneficial to improving the flight performance of the first and second cylindrical structures, and improves the applicability of the wrap-around unlocking and separation device. This makes the wrap-around unlocking and separation device suitable for application scenarios with high requirements for the smoothness of the outer surface of the cylindrical structure, such as the multi-stage missile unlocking and separation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the strap-type unlocking and separation device provided in an embodiment of the present invention;

[0016] Figure 2 for Figure 1 Enlarged schematic diagram of point I in the middle;

[0017] Figure 3 A three-dimensional schematic diagram of the connecting rod provided in an embodiment of the present invention;

[0018] Figure 4 This is a cross-sectional schematic diagram of the strap-type unlocking and separating device provided in an embodiment of the present invention, located at the clamping block.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Strip structure; 11. Strip body; 12. Clamping block; 121. Limiting groove; 13. Connecting post; 14. Clamping nut; 2. Position holding structure; 21. Connecting rod; 211. Split clamping block; 2111. Clamping groove; 212. Locking rope connection part; 213. Hinge seat; 214. Auxiliary rope connection part; 22. Locking rope; 23. Unlocker; 3. Auxiliary rope; 400. First cylindrical structure; 401. First limiting protrusion; 500. Second cylindrical structure; 501. Second limiting protrusion. Detailed Implementation

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] It should be noted that in the XYZ coordinate system provided herein, the positive X-axis represents the right, and the negative X-axis represents the left; the positive Y-axis represents the rear, and the negative Y-axis represents the front; the positive Z-axis represents the top, and the negative Z-axis represents the bottom. Furthermore, it should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein.

[0023] This invention provides a strap-type unlocking and separation device, including a strap structure 1 and a position holding structure 2. The strap structure 1 includes an elastic strap body 11 and a clamping block 12. The clamping block 12 is provided with a limiting groove 121, which is used to insert a first limiting protrusion 401 on the inner wall of a first cylindrical structure 400 and a second limiting protrusion 501 on the inner wall of a second cylindrical structure 500. The strap body 11 is used to undergo elastic deformation to abut against the first limiting protrusion 401 and the second limiting protrusion 501 through the clamping block 12. The position holding structure 2 is used to connect to both ends of the strap body 11 to keep the strap body 11 in an elastic deformation state.

[0024] It should be noted that the unlocking and separation between the first cylindrical structure 400 and the second cylindrical structure 500 described in this article refers to the unlocking and separation between spacecraft modules, satellites and rocket bodies, or between multiple stages of a missile, or between the aircraft body and the payload. The enveloping unlocking and separation can be applied to the unlocking and separation between the above-mentioned cylindrical structures or similar structures. The relevant descriptions mentioned below are all illustrative and are not specifically limited here.

[0025] Specifically, in combination Figure 1 and Figure 2 As shown, the strip body 11 is a flat and elongated strip-shaped or strip-like structure, and the strip structure 1 is wound around the inner wall of the first cylindrical structure 400 and the second cylindrical structure 500 to form a C-shaped or C-like structure. When the position holding structure 2 is not locked or is unlocked and separated, the strip body 11 is elastic and not restricted by the locking force of the position holding structure 2. Therefore, the strip body 11 retracts towards its own center to a certain extent and generates elastic deformation, causing the clamping block 12 to be disconnected from the first limiting protrusion 401 and the second limiting protrusion 501 respectively provided on the inner wall of the first cylindrical structure 400 and the second cylindrical structure 500. At this time, the first cylindrical structure 400 and the second cylindrical structure 500 are not subject to the limiting constraint of the strip structure 1, so they can be unlocked and separated. During locking assembly, after the first cylindrical structure 400 and the second cylindrical structure 500 are docked, the strip structure 1 can be stretched to match its shape with the inner wall shape of the first cylindrical structure 400 and the second cylindrical structure 500, so that the limiting groove 121 of the clamping block 12 abuts against the first limiting protrusion 401 and the second limiting protrusion 501, and the two ends of the strip structure 1 are locked and limited by the position holding structure 2. Alternatively, the clamping block 12 may be provided with two limiting slots 121, which are respectively inserted into the first limiting protrusion 401 and the second limiting protrusion 501, thus achieving the limiting function. Or, multiple limiting slots 121 may be inserted simultaneously to improve the stability of the connection and limiting. No specific restrictions are made here.

[0026] For example, the position holding structure 2 can adopt a shape memory alloy fracture device commonly used in the aerospace field. The two ends of the strip structure 1 are relatively fixedly connected by a slotted bolt. When unlocking and separating, the principle of shape memory alloy expansion when energized is used to break the slotted bolt, so that the position holding structure 2 releases the restriction on the two ends of the strip structure 1. The strip structure 1 automatically contracts due to its own elasticity, causing the strip structure 1 to separate from the first cylindrical structure 400 and the second cylindrical structure 500, thus realizing the unlocking and separation of the first cylindrical structure 400 and the second cylindrical structure 500 (this solution is not shown in the figure).

[0027] For example, combined Figure 4As shown, the clamping block 12 is integrally connected to the strip body 11. The strip body 11 has a C-shaped or similar structure. The clamping block 12 is disposed on the outer wall of the strip body 11, and the length of the clamping block 12 is equal to or approximately equal to that of the strip body 11 (the length of the clamping block 12 is not shown in the figure). A limiting groove 121 is provided on the outer wall of the clamping block 12. The first cylindrical structure 400 and the second cylindrical structure 500 are respectively provided with a first limiting protrusion 401 and a second limiting protrusion 501 distributed circumferentially along their inner walls. When the first cylindrical structure 400 and the second cylindrical structure 500 are connected to each other, the protrusion structure formed by the first limiting protrusion 401 and the second limiting protrusion 501 can be inserted into the limiting groove 121. When the strip body 11 contracts due to elasticity, the clamping block 12 contracts with the strip body 11, thereby causing the above-mentioned protrusion structure to be pulled out from the limiting groove 121. In this way, by limiting the two ends of the strip body 11 by the position holding structure 2, the clamping block 12 located on the outer wall of the strip body 11 can limit the first cylindrical structure 400 and the second cylindrical structure 500, thereby improving the connection stability between the first cylindrical structure 400 and the second cylindrical structure 500; when unlocking and separating, the position holding structure 2 releases the limitation on the strip body 11, and the strip body 11 contracts due to its elasticity, so that the limiting groove 121 separates from the first limiting protrusion 401 and the second limiting protrusion 501, thereby realizing the unlocking and separation of the first cylindrical structure 400 and the second cylindrical structure 500.

[0028] In this embodiment, the strap-type unlocking and separating device uses the limiting groove 121 of the clamping block 12 to insert and limit the first cylindrical structure 400 and the second cylindrical structure 500. The position holding structure 2 locks and fixes both ends of the strap structure 1, realizing the locking and fixing between the first cylindrical structure 400 and the second cylindrical structure 500, and thus realizing the locking and fixing between, for example, spacecraft modules. During unlocking and separation, the position holding structure 2 releases the locking and fixing of both ends of the strap structure 1. Since the strap body 11 is elastic, the strap body 11 contracts and deforms to a certain extent, causing the clamping block 12 to lock and fix the first cylindrical structure 400 and the second cylindrical structure 500. The connection between the cylindrical structures 500 is released, and the first cylindrical structure 400 and the second cylindrical structure 500 are unlocked and separated. Furthermore, the wrapping unlocking and separation device of this embodiment can be set on the inner wall. Compared with setting the strip structure 1 on the outer wall of the first cylindrical structure 400 and the second cylindrical structure 500, this solution is beneficial to improving the flight performance of the first cylindrical structure 400 and the second cylindrical structure 500, and improves the applicability of the wrapping unlocking and separation device. This makes the wrapping unlocking and separation device suitable for application scenarios with high requirements for the smoothness of the outer surface of the cylindrical structure, such as the multi-stage missile body unlocking and separation.

[0029] In addition, the position holding structure 2 of the wrap-type unlocking and separation device can be made of non-pyrotechnic materials such as shape memory alloy expansion joints or hot knife unlocking devices (which will be introduced later), which reduces pollution to the surrounding environment, reduces the impact on other structures, and has the advantages of being reusable and easy to store. Compared with wrap-type unlocking and separation devices that use pyrotechnic materials, it has better applicability.

[0030] Optionally, the position holding structure 2 includes a locking rope 22 and a pair of hinged connecting rods 21. One end of each connecting rod 21 is provided with a split clamping block 211. The two split clamping blocks 211 are used to clamp the two ends of the strip body 11. The other ends of the two connecting rods 21 are connected by the locking rope 22, which is in a taut state.

[0031] Specifically, in combination Figure 1 , Figure 2 and Figure 3 As shown, a hinge seat 213 is provided at the center of the connecting rod 21. The two connecting rods 21 are hinged through their respective hinge seats 213 to form a lever structure similar to scissors. That is, the hinge center serves as the fulcrum, and the two connecting rods 21 form two lever arms. A split clamping block 211 is provided at one end of the connecting rod 21 in the opposite direction of the X-axis in the figure. The two connecting rods 21 rotate relative to each other in different directions, which can bring the two split clamping blocks 211 closer together until they clamp the two ends of the strip structure 1, restricting the contraction of the strip structure 1, and thus limiting and locking the first cylindrical structure 400 and the second cylindrical structure 500; or, the two split clamping blocks 211 can move away from each other until they release the two ends of the strip structure 1, causing the strip structure 1 to contract and no longer limiting the first cylindrical structure 400 and the second cylindrical structure 500. The locking rope 22 can be woven from a high-strength rope material. The two connecting rods 21 have a ring or similar locking rope connecting part 212 at one end in the positive X-axis direction of the figure. The locking rope 22 passes through the two locking rope connecting parts 212. When the locking rope 22 is taut, it generates tension on the two locking rope connecting parts 212, thereby causing the split clamps 211 on the connecting rods 21 to come closer to each other and clamp the two ends of the strip body 11.

[0032] It should be noted that the locking rope 22 in this embodiment can be made of different materials or braiding methods according to the requirements of clamping force, strength, etc., and the unlocking device 23 can also adopt relevant unlocking methods and structures in the prior art, such as mechanical cutting, according to the actual situation.

[0033] Thus, when the strap-type unlocking and separating device is locked, the two segmented clamping blocks 211 clamp the two ends of the strip structure 1, and the taut locking rope 22 applies tension. The two connecting rods 21 form a lever structure similar to scissors, resulting in greater clamping force at the segmented clamping blocks 211, making the two ends of the strip structure 1 more securely locked. Furthermore, by applying a certain preload through the locking rope 22, when the unlocking device 23 disconnects the locking rope 22, the two connecting rods 21 rotate more rapidly relative to each other due to the release of the preload, thereby quickly causing the segmented clamping blocks 211 to release the two ends of the strip structure 1, achieving faster unlocking and release between the first cylindrical structure 400 and the second cylindrical structure 500.

[0034] Optionally, the position holding structure 2 further includes an unlocker 23, which is disposed on the connecting rod 21 and is used to disconnect the locking rope 22 or to slack off the locking rope 22.

[0035] Specifically, the unlocker 23 can use a structure commonly used in the aerospace field, such as mechanical shearing or mechanical unlocking, to disconnect the locking rope 22 or release the locking rope 22 to a slack state.

[0036] Thus, by disconnecting the locking rope 22 or slackening the locking rope 22, the unlocker 23 allows the connecting rod 21 to rotate relative to each other to release the two ends of the strip body 11, thereby releasing the clamping block 12 from its limit and achieving the unlocking and separation of the first cylindrical structure 400 and the second cylindrical structure 500.

[0037] Optionally, the unlocker 23 is a hot knife unlocking device, which includes a bracket and a blade connected to each other. The bracket is mounted on the connecting rod 21, and the blade abuts against the locking rope 22. The blade is used to melt the locking rope 22.

[0038] Specifically, in combination Figure 1 and Figure 2 As shown, the unlocker 23 is a hot knife unlocking device. The bracket of the hot knife unlocking device is installed at one end of the connecting rod 21 near the locking rope connection 212. The blade of the hot knife unlocking device abuts against the locking rope 22. When the power is on, the blade of the hot knife unlocking device heats up, and the high temperature generated can cause the locking rope 22 to melt.

[0039] Thus, by energizing the hot knife unlocking device and heating it up, the locking rope 22 is melted, thereby releasing the split clamping block 211 and unlocking and separating the first cylindrical structure 400 and the second cylindrical structure 500. Furthermore, compared to mechanical cutting or using pyrotechnic devices to break the lock rope 22 (e.g., Dyneema rope), the hot knife unlocking device is more suitable for breaking the high-strength locking rope 22 and has a lower impact force on other structures, improving the applicability of this wrap-around unlocking and separating device to scenarios with high clamping force and high stability requirements.

[0040] Optionally, the locking rope 22 is a Dyneema rope.

[0041] Specifically, Dyneema rope or Dyneema line is often used in aerospace or military fields. Dyneema rope has high strength, is corrosion resistant, and is suitable for a variety of applications.

[0042] In this way, the locking rope 22 can provide greater locking force, making the strap-type unlocking and separation device suitable for scenarios with high locking force requirements.

[0043] Optionally, it also includes at least one pair of auxiliary ropes 3, one end of which is connected to the position holding structure 2 and the other end of which is connected to the strip structure 1, wherein each pair of auxiliary ropes 3 is arranged symmetrically.

[0044] Specifically, in combination Figure 1 , Figure 2 and Figure 3 As shown, the hinge seat 213 of the connecting rod 21 is provided with an auxiliary rope connection part 214 in the shape of a ring or similar ring. The strip body 11 of the strip structure 1 is also provided with an auxiliary rope connection part 214. The auxiliary rope 3 passes through the auxiliary rope connection parts 214 of the connecting rod 21 and the strip body 11 respectively. The two auxiliary ropes 3 are parallel to the Y-axis and are symmetrically arranged with respect to the X-axis in the figure. The auxiliary rope 3 can also have a certain preload.

[0045] It should be noted that the number of pairs and the material of the auxiliary rope 3 can be selected according to the needs. For example, if the two auxiliary ropes 3 in the figure are parallel to the Y-axis, multiple pairs of auxiliary ropes 3 can be added at a certain angle away from the Y-axis in the figure. No specific restrictions are imposed here.

[0046] Thus, by applying a certain tension to the connecting rod 21 through the auxiliary rope 3, the stability of the connecting rod 21 is improved, and the split clamping block 211 clamps the two ends of the strip structure 1 more firmly. In addition, the auxiliary rope 3 can also have a certain pre-tension so that when unlocking and separating, the auxiliary rope 3 can assist the rapid contraction of the strip structure 1.

[0047] Optionally, the two ends of the strip body 11 are respectively provided with connecting posts 13, which are used to clamp the strip body 11 into the two segmented clamping blocks 211.

[0048] Specifically, in combination Figure 1 , Figure 2 and Figure 3 As shown, connecting posts 13 are fixed at both ends of the strip body 11, and clamping grooves 2111 can also be provided on the segmented clamping blocks 211. The two connecting rods 21 rotate relative to each other in different directions, which can cause the two segmented clamping blocks 211 to clamp the two connecting posts 13, and the two connecting posts 13 are limited by the clamping grooves 2111; or, the two segmented clamping blocks 211 can be moved away from each other, and the two connecting posts 13 can be released.

[0049] Thus, by clamping the connecting post 13 with the split clamping block 211, the two ends of the strip body 11 can be locked more securely, thereby improving the stability of the locking between the first cylindrical structure 400 and the second cylindrical structure 500.

[0050] Optionally, the strip structure 1 further includes clamping nuts 14, each of the connecting posts 13 being threadedly connected to at least two clamping nuts 14, and the two connecting posts 13 being clamped to both ends of the strip body 11 by the clamping nuts 14 respectively.

[0051] Specifically, in combination Figure 1 and Figure 2 As shown, the connecting post 13 passes through the end of the strip body 11. The connecting post 13 is a stud structure. The clamping nut 14 is threaded onto the connecting post 13 and is located on both sides of the end of the strip body 11.

[0052] It should be understood that when each connecting post 13 is threadedly connected to two or more clamping nuts 14, it can also achieve the above-mentioned tightening of the clamping nuts 14 to the end of the strip body 11, thereby clamping the connecting post 13 to the end of the strip body 11. This achieves the improvement of the stability of the clamping connection of the strip body 11 by increasing the number of clamping nuts 14, without making specific limitations here.

[0053] Thus, by tightening the two clamping nuts 14 to the end of the strip body 11, the connection between the connecting post 13 and the end of the strip body 11 is achieved. By adjusting the position of the threaded connection between the clamping nuts 14 and the connecting post 13, it is easy to adjust the tension of the strip body 11, so that the clamping block 12 fits more closely to the inner wall of the first cylindrical structure 400 and the second cylindrical structure 500, thereby improving the stability of the locking between the first cylindrical structure 400 and the second cylindrical structure 500.

[0054] Optionally, the two segmented clamping blocks 211 are segmented nuts, which are used to form threaded holes for threaded connection with the connecting post 13.

[0055] Specifically, in combination Figure 1 , Figure 2 and Figure 3 As shown, the clamping groove 2111 on the segmented clamping block 211 is threaded, that is, the segmented clamping block 211 is a segmented nut. When the two segmented nuts clamp the connecting column 13, they are spliced ​​to form a threaded hole, so that the connecting column 13 is threadedly connected to the segmented nut in the clamped state.

[0056] Thus, by using a segmented nut as a segmented clamping block 211, the connection between the connecting post 13 and the segmented clamping block 211 is made more stable. Furthermore, by tightening and loosening the threaded connection between the connecting post 13 and the segmented nut, the tension of the strip structure 1 can be further adjusted, making it fit more closely to the inner wall of the first cylindrical structure 400 and the second cylindrical structure 500, thereby improving the stability of the locking between the first cylindrical structure 400 and the second cylindrical structure 500.

[0057] Optionally, the strip body 11 has an open ring structure, and a plurality of clamping blocks 12 are evenly disposed on the circumferential sidewall of the strip body 11.

[0058] Specifically, in combination Figure 1 As shown, including the clamping blocks 12 which are not shown due to obstruction in the figure, there are a total of eight clamping blocks 12. The strip body 11 is a ring structure with an opening, which is wrapped around the inner wall of the first cylindrical structure 400 and the second cylindrical structure 500. The eight clamping blocks 12 are symmetrically arranged on the outer wall of the strip body 11 with respect to the X-axis in the figure, and are evenly and equally distributed along the ring curve formed by the strip body 11.

[0059] Thus, by uniformly distributing the clamping blocks 12 along the circumferential sidewall of the strip body 11, the locking force of the first cylindrical structure 400 and the second cylindrical structure 500 is evenly distributed, thereby improving the stability of the locking between the first cylindrical structure 400 and the second cylindrical structure 500.

[0060] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A strap-type unlocking and separation device, characterized in that, The system includes a strip structure (1) and a position holding structure (2). The strip structure (1) includes an elastic strip body (11) and a clamping block (12). The clamping block (12) is provided with a limiting groove (121). The limiting groove (121) is used to insert a first limiting protrusion (401) on the inner wall of a first cylindrical structure (400) and a second limiting protrusion (501) on the inner wall of a second cylindrical structure (500). The strip body (11) is used to undergo elastic deformation to abut against the first limiting protrusion (401) and the second limiting protrusion (501) through the clamping block (12). The position holding structure (2) is used to connect to both ends of the strip body (11) to keep the strip body (11) in an elastic deformation state. The position holding structure (2) includes a locking rope (22) and a pair of hinged connecting rods (21). One end of the connecting rod (21) is provided with a split clamp (211). The two split clamps (211) are used to clamp the two ends of the strip body (11). The other ends of the two connecting rods (21) are connected by the locking rope (22) in a taut state. The position holding structure (2) also includes an unlocker (23), which is disposed on the connecting rod (21) and is used to disconnect the locking rope (22) or to slack off the locking rope (22); The two connecting rods (21) are hinged together by a cross-joint hinge seat (213) to form a lever structure. The distance between the end of the connecting rod (21) that is connected to the locking rope (22) and the hinge seat (213) is greater than the distance between the end of the connecting rod (21) that is connected to the split clamp (211) and the hinge seat (213).

2. The strap-type unlocking and separating device according to claim 1, characterized in that, The unlocker (23) is a hot knife unlocking device. The hot knife unlocking device includes a bracket and a blade connected to each other. The bracket is mounted on the connecting rod (21). The blade abuts against the locking rope (22). The blade is used to melt the locking rope (22).

3. The strap-type unlocking and separation device according to claim 1, characterized in that, The locking rope (22) is a Dyneema rope.

4. The strap-type unlocking and separation device according to claim 1, characterized in that, It also includes at least one pair of auxiliary ropes (3), one end of which is connected to the position holding structure (2) and the other end of which is connected to the strip structure (1), wherein each pair of auxiliary ropes (3) is arranged symmetrically.

5. The strap-type unlocking and separating device according to claim 1, characterized in that, The strip body (11) is provided with connecting posts (13) at both ends, and the connecting posts (13) are used to clamp in the two segmented clamping blocks (211).

6. The strap-type unlocking and separating device according to claim 5, characterized in that, The strip structure (1) further includes clamping nuts (14), each of the connecting posts (13) is threadedly connected to at least two of the clamping nuts (14), and the two connecting posts (13) are respectively clamped to both ends of the strip body (11) by the clamping nuts (14).

7. The strap-type unlocking and separation device according to claim 5, characterized in that, The two segmented clamps (211) are segmented nuts, which are used to form threaded holes for threaded connection with the connecting post (13).

8. The strap-type unlocking and separation device according to claim 1, characterized in that, The strip body (11) has an open ring structure, and a plurality of clamping blocks (12) are evenly arranged on the circumferential sidewall of the strip body (11).

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