Parachute canopy separation device

Abstract

The present invention relates to the technical field of parachutes, and provides a parachute canopy separation device, comprising: a connecting mechanism, a cutter, a sliding member, a sleeve assembly and a sliding block; a part of the connecting mechanism is connected to the cutter, and the cutter is connected to the sleeve assembly; the first end of the sliding member is threadedly connected to the connecting mechanism, and the second end of the sliding member is elastically connected to the sleeve assembly; the sliding block has a first position and a second position. When a part of the connecting mechanism is not cut off, the sliding member abuts against the sliding block, and the sliding block is inserted into the upper and lower parts of the sleeve assembly, and the sliding block is in the first position; when a part of the connecting mechanism is cut off, the sliding member is separated from the sliding block, and the sliding block moves to the outside of the lower part of the sleeve assembly, and the sliding block is in the second position. The above-mentioned parachute canopy separation device separates the parachute canopy and the cabin by mechanical means, and the separation method has strong reliability, avoiding the occurrence of the event that the parachute and the cabin are still not separated when the cabin lands.

Description

Technical Field

[0001] The present invention relates to the technical field of parachutes, and particularly to a parachute nacelle separation device. Background Art

[0002] Parachute recovery has become a common landing and recovery method in processes such as the recovery of spacecraft, the landing and recovery of high-altitude balloon pods, and aerial material delivery. This method has a simple structure and mature technology. However, in some working conditions, parachute recovery requires the implementation of nacelle separation when landing. But when the wind speed at the landing site is relatively high and landing must be carried out, if the nacelle does not separate, it may cause the parachute to form a wind pocket and drag the pod to move on the ground, thus seriously damaging the equipment on the pod.

[0003] Currently, the methods adopted for nacelle separation mainly include the following several types:

[0004] Separation method based on altitude change: By monitoring the altitude change of the pod, judging whether the pod has landed according to the altitude change data, and relying on the communication link to issue an instruction to actuate the separation mechanism for separation after landing. This method depends on the integrity of the communication link after the pod lands. If the antenna is damaged or the antenna direction is not good during the landing process, separation cannot be implemented.

[0005] Separation method based on an acceleration sensor: Install an acceleration sensor on the pod and judge for nacelle separation according to the landing acceleration data. This method does not depend on the communication link, but since the landing impact is a short-time process, the acceleration sensor is required to have a relatively high sampling frequency. However, situations such as parachute opening and gusts during the parachute descent process may cause large instantaneous accelerations. In order to ensure cutting safety and avoid false triggering, a relatively large landing trigger threshold usually needs to be set. However, due to the large difference in acceleration under different landing ground conditions, there may sometimes be a situation where the landing does not reach the trigger threshold and cutting cannot be implemented, resulting in the inability to separate the nacelle.

[0006] Separation method based on a ranging sensor: Install a ranging sensor on the pod, measure the distance between the pod and the ground, and control the cutter to cut based on the distance between the pod and the ground. However, the attitude of the pod is unstable during the parachute descent process, especially in the case of gusts on the ground, the landing attitude of the pod may roll, resulting in the sensor being unable to accurately measure the actual distance between the pod and the ground, and thus unable to achieve effective separation.

[0007] In summary, the existing nacelle separation methods all have certain limitations and deficiencies, and cannot reliably achieve nacelle separation under various complex working conditions. Based on this, there is an urgent need to propose a more effective nacelle separation technology. Summary of the Invention

[0008] The present invention provides a parachute nacelle separation device to achieve effective separation of the nacelle.

[0009] The present invention provides a parachute nacelle separation device, comprising: a connecting mechanism, a cutter, a sliding member, a sleeve assembly and a sliding block; a part of the connecting mechanism is connected to the cutter, the cutter is connected to the sleeve assembly, the cutter is used to cut off a part of the connecting mechanism so that the connecting mechanism is separated from the cutter, and the connecting mechanism is used to connect to the parachute shroud lines; the first end of the sliding member is threadedly connected to the connecting mechanism, and the second end of the sliding member is elastically connected to the sleeve assembly. When a part of the connecting mechanism is cut off, the sliding member can move relative to the sleeve assembly under the action of elastic force; the sliding block has a first position and a second position. When a part of the connecting mechanism is not cut off, the sliding member abuts against the sliding block, the sliding block is inserted into the upper and lower parts of the sleeve assembly, the sliding block is in the first position, and the upper and lower parts of the sleeve assembly are connected; when a part of the connecting mechanism is cut off, the sliding member is separated from the sliding block, the sliding block moves outside the lower part of the sleeve assembly, the sliding block is in the second position, and the upper and lower parts of the sleeve assembly are separated.

[0010] According to a parachute nacelle separation device provided by the present invention, the sliding member comprises a connected first body part and a second body part, and the diameter of the second body part is greater than that of the first body part; the first body part is threadedly connected to the connecting mechanism, and the second body part is elastically connected to the sleeve assembly. When the side surface of the second body part abuts against the side surface of the sliding block, the sliding block is in the first position; when the second body part is separated from the sliding block, the sliding block is in the second position.

[0011] According to a parachute nacelle separation device provided by the present invention, it further comprises a first elastic member, the first elastic member is arranged in the sleeve assembly, and both ends of the first elastic member respectively abut against the inner wall of the sleeve assembly and the second body part, and the first elastic member is in a compressed state.

[0012] According to a parachute nacelle separation device provided by the present invention, the sleeve assembly comprises: a first sleeve, a second sleeve and a force applying member; the second sleeve is sleeved on the lower part of the first sleeve, the force applying member is arranged above the second sleeve and abuts against the second sleeve, the first sleeve is the upper part of the sleeve assembly, and the second sleeve is the lower part of the sleeve assembly; the inner wall of the second sleeve and the sliding block are provided with inclined surfaces that cooperate with each other for sliding, and the force applying member is used to urge the sliding block to be in the second position after the sliding member is separated from the sliding block.

[0013] A parachute canopy separation device provided by the present invention, wherein through holes are provided on the wall surface of the first sleeve, grooves are provided on the inner wall of the second sleeve, the first end of the sliding block is inserted into the through holes, and the second end of the sliding block is embedded in the grooves; a first inclined surface is provided at the second end of the sliding block, and a second inclined surface that cooperates with the first inclined surface for sliding is provided on the inner wall of the groove.

[0014] A parachute canopy separation device provided by the present invention, wherein the sleeve assembly further includes a third sleeve, the third sleeve is sleeved on the upper part of the first sleeve and is connected to the first sleeve; the force applying member is arranged between the third sleeve and the first sleeve, and both ends of the force applying member are respectively abutted against the third sleeve and the second sleeve, the force applying member is a second elastic member, and the second elastic member is in a compressed state.

[0015] A parachute canopy separation device provided by the present invention, wherein the connection mechanism includes: a connection assembly and a connecting member, the connection assembly is threadedly connected to the sliding member, the connecting member is connected to the connection assembly and the cutter, and the cutter is used for cutting off the connecting member.

[0016] A parachute canopy separation device provided by the present invention, wherein the connection assembly includes: a first lifting lug, a connection seat and a wire wheel, the sliding member is threadedly connected to the first lifting lug, the first lifting lug has a pin shaft, the wire wheel is sleeved outside the pin shaft and can rotate relative to the pin shaft, and the wire wheel is used for winding the parachute ropes; the connection seat is connected to the first lifting lug, and the connecting member is connected to the connection seat.

[0017] A parachute canopy separation device provided by the present invention further includes a mounting seat, the mounting seat is connected to the third sleeve, and the cutter is arranged on the mounting seat.

[0018] A parachute canopy separation device provided by the present invention further includes a second lifting lug, the second lifting lug is sleeved outside the second sleeve and is connected to the second sleeve, and the second lifting lug is used for connecting to the canopy of the parachute.

[0019] The parachute canopy separation device provided by the present invention separates the parachute canopy and the cabin by mechanical means through the arrangement of the sleeve assembly, the sliding member and the sliding block, without relying on electronic devices. The separation method is highly reliable, avoiding the occurrence of the event that the parachute and the cabin are still not separated when the cabin lands, and the separation device can be reused, reducing the use cost. Brief Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is an overall schematic diagram of the parachute nacelle separation device provided by the present invention.

[0022] Figure 2 It is a sectional view of the parachute nacelle separation device provided by the present invention.

[0023] Reference numerals:

[0024] 1. Sliding member; 11. First body part; 12. Second body part; 2. Sliding block; 3. First elastic member; 41. First sleeve; 42. Second sleeve; 43. Third sleeve; 44. Second elastic member; 51. Connecting member; 52. First lifting lug; 521. Pin shaft; 53. Wire wheel; 54. Connecting seat; 61. Cutter; 62. Mounting seat; 63. Mounting frame; 7. Second lifting lug. Detailed implementation manners

[0025] To make the objectives, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the present invention with reference to the drawings in the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] The following will be combined with Figure 1 and Figure 2 to describe the parachute nacelle separation device of the present invention.

[0027] As Figure 1 and Figure 2 shown, in the embodiment of the present invention, the parachute nacelle separation device includes: a connection mechanism, a sliding member 1, a sliding block 2, a sleeve assembly and a cutter 61. A part of the connection mechanism is connected to the cutter 61, the cutter 61 is connected to the sleeve assembly, and the connection mechanism is used to connect to the parachute ropes. The cutter 61 is used to cut off the part of the connection mechanism connected to the cutter 61 when the nacelle of the parachute is at an appropriate distance from the ground, so that the cutter 61 and the connection mechanism are separated. At this time, the parachute ropes are connected to the connection mechanism, and the cutter 61 is connected to the sleeve assembly.

[0028] Before a part of the connecting mechanism is cut off, the upper part and the lower part of the sleeve assembly are connected by the sliding block 2, and the lower part of the sleeve assembly is used to connect with the cabin of the parachute. The first end of the sliding member 1 is threadedly connected to the connecting mechanism, and the second end of the sliding member 1 is sleeved inside the sleeve assembly and elastically connected to the sleeve assembly. When a part of the connecting mechanism is cut off, the sliding member 1 can move downward relative to the sleeve assembly under the action of the elastic force. During the movement of the sliding member 1, the position of the sliding block 2 will change, so that the upper part and the lower part of the sleeve assembly are separated. The lower part of the sleeve assembly is connected to the cabin of the parachute, and the upper part of the sleeve assembly is connected to the connecting mechanism through the sliding member 1. The connecting mechanism is connected to the parachute ropes, thus realizing the separation of the parachute cabin.

[0029] Specifically, the sliding block 2 has a first position and a second position. Before a part of the connecting mechanism is cut off, the side surface of the sliding member 1 abuts against the side surface of the sliding block 2, and both ends of the sliding block 2 are respectively inserted into the upper part and the lower part of the sleeve assembly. At this time, the sliding block 2 is in the first position, and the upper part and the lower part of the sleeve assembly are connected; after a part of the connecting mechanism is cut off by the cutter 61, the sliding member 1 moves downward under the action of the elastic force, so that the sliding block 2 is separated from the sliding member 1. In the case where there is no object abutting against the sliding block 2, the sliding block 2 moves out of the lower part of the sleeve assembly, which is the second position of the sliding block 2, so that the upper part and the lower part of the sleeve assembly are separated, realizing the separation of the parachute cabin.

[0030] Furthermore, a through hole is provided on the wall surface of the upper part of the sleeve assembly, and one end of the sliding block 2 passes through the through hole and can abut against the side wall of the sliding member 1. A groove is provided on the inner wall of the lower part of the sleeve assembly, and the other end of the sliding block 2 is embedded in the groove to connect the upper part and the lower part of the sleeve assembly. When the sliding member 1 moves, there are various ways to cause the sliding block 2 to move to the second position. For example, a spring is provided in the groove. When the sliding member 1 abuts against the sliding block 2, the spring is compressed; when the sliding member 1 moves, after the sliding member 1 is separated from the sliding block 2, the spring uses the elastic force to push the sliding block 2 to move to the second position, so that the upper part and the lower part of the sleeve assembly are separated. Another example is that the inner wall of the groove is provided with an inclined surface, and one end of the sliding block 2 embedded in the groove is also provided with an inclined surface. The two inclined surfaces cooperate to slide. A force-applying member is provided above the lower part of the sleeve assembly to squeeze the lower part of the sleeve assembly. When the sliding member 1 is separated from the sliding block 2, the sliding block 2 moves out of the groove under the squeezing force of the force-applying member, so that the upper part and the lower part of the sleeve assembly are separated.

[0031] The parachute cabin separation device provided by the embodiment of the present invention separates the parachute and the cabin mechanically by setting the sleeve assembly, the sliding member and the sliding block, without relying on electronic equipment. The separation method is highly reliable, avoiding the occurrence of the event that the parachute and the cabin are still not separated when the cabin lands, and the separation device can be reused, reducing the use cost.

[0032] As shown Figure 2 In the embodiment of the present invention, the sliding member 1 includes a connected first body portion 11 and a second body portion 12, and the diameter of the second body portion 12 is greater than that of the first body portion 11. The first body portion 11 is threadedly connected to the connecting mechanism, and a part of the first body portion 11 extends into the sleeve assembly, and the second body portion 12 is elastically connected to the inner wall of the sleeve assembly. When the side surface of the second body portion 12 abuts against the side surface of the sliding block 2, both ends of the sliding block 2 are respectively located in the upper and lower parts of the sleeve assembly, so that the upper and lower parts of the sleeve assembly are connected. At this time, the sliding block 2 is in the first position; after the second body portion 12 is separated from the sliding block 2, since the diameter of the first body portion 11 is smaller than that of the second body portion 12, the sliding block 2 is no longer subjected to the pressing force, and the sliding block 2 slides out of the lower part of the sleeve assembly, so that the upper and lower parts of the sleeve assembly are separated.

[0033] Further, as shown Figure 2 The parachute nacelle separation device further includes a first elastic member 3. The first elastic member 3 is disposed in the sleeve assembly, and both ends of the first elastic member 3 respectively abut against the inner wall of the sleeve assembly and the second body portion 12. When a part of the connecting mechanism is not cut off, the first elastic member 3 is in a compressed state. After a part of the connecting mechanism is cut off, the first elastic member 3 elongates, pushing the second body portion 12 of the sliding member 1 downward, so that the second body portion 12 is separated from the sliding block 2, and the sliding block 2 is in the second position.

[0034] In this embodiment, when the elastic force of the first elastic member 3 is completely released, the sliding member 1 stops moving. Optionally, in the embodiment of the present invention, the number of the first elastic members 3 can be one or more. When the number of the first elastic members 3 is one, it can be sleeved outside the first body portion 11 of the sliding member 1; when the number of the first elastic members 3 is multiple, multiple first elastic members 3 are arranged annularly around the first body portion 11.

[0035] As shown Figure 2 In the embodiment of the present invention, the sleeve assembly includes: a first sleeve 41, a second sleeve 42 and a force applying member. The second sleeve 42 is sleeved on the lower part of the first sleeve 41, wherein the first sleeve 41 is the upper part of the sleeve assembly, and the second sleeve 42 is the lower part of the sleeve assembly. The wall surface of the first sleeve 41 is provided with a through hole, and the inner wall of the second sleeve 42 is provided with a groove. When the sliding block 2 is in the first position, both ends of the sliding block 2 are respectively inserted into the through hole and the groove to connect the first sleeve 41 and the second sleeve 42.

[0036] One end of the sliding member 1 extends into the first sleeve 41 and the second sleeve 42. The force - applying member is arranged on the second sleeve 42 and abuts against the second sleeve 42, and the force - applying member can transmit force to the second sleeve 42. The first end of the sliding block 2 is inserted into the through - hole of the first sleeve 41, and the second end of the sliding block 2 is embedded in the groove of the second sleeve 42. The second end of the sliding block 2 is provided with a first inclined surface, and the inner wall of the groove is provided with a second inclined surface that cooperates with the first inclined surface for sliding. When the second body part 12 of the sliding member 1 moves below the sliding block 2, under the action of the extrusion force of the force - applying member, the first inclined surface of the sliding block 2 slides along the second inclined surface of the groove to the outside of the groove, prompting the second sleeve 42 to separate from the first sleeve 41.

[0037] Further, in the embodiment as Figure 2 shown, the number of sliding blocks 2 is multiple. Correspondingly, the wall surface of the first sleeve 41 is provided with multiple through - holes, and the inner wall of the second sleeve 42 is provided with multiple grooves. The number of through - holes and grooves matches the number of sliding blocks 2.

[0038] As Figure 2 shown, the parachute nacelle separation device further includes a third sleeve 43. The third sleeve 43 is sleeved on the upper part of the first sleeve 41 and is connected to the first sleeve 41. Specifically, in the embodiment of the present invention, both the first sleeve 41 and the second sleeve 42 are cylindrical parts with open ends at both ends. The first end of the third sleeve 43 is open, the end of the first end of the third sleeve 43 abuts against the end of the second sleeve 42, the second end of the third sleeve 43 is provided with a bottom surface, and a through - hole is provided at the center of the bottom surface. One end of the first sleeve 41 is connected to the bottom surface of the third sleeve 43, and the sliding member 1 passes through the through - hole and is threadedly connected to the connecting mechanism.

[0039] Further, the third sleeve 43 has a first hole and a second hole. The through - hole on the bottom surface of the third sleeve 43 communicates with the first hole and the second hole. The diameter of the second hole is larger than that of the first hole to form a stepped hole. The outer diameter of the first sleeve 41 is adapted to the inner diameter of the first hole, and there is a gap between the outer wall of the first sleeve 41 and the inner wall of the second hole. The force - applying member is arranged in this gap. Optionally, the force - applying member can also be a second elastic member 44. The two ends of the second elastic member 44 respectively abut against the end of the second sleeve 42 and the wall surface of the stepped hole. In this embodiment, the second elastic member 44 is in a compressed state to transmit elastic force to the second inclined surface of the groove of the second sleeve 42. When the sliding member 1 separates from the sliding block 2, the second elastic member 44 uses the elastic force to prompt the sliding block 2 to slide along the groove to the outside of the groove. Optionally, the number of the second elastic members 44 can be one or multiple; when the number of the second elastic members 44 is one, the second elastic member 44 is sleeved outside the first sleeve 41; when the number of the second elastic members 44 is multiple, multiple second elastic members 44 are arranged annularly around the first sleeve 41.

[0040] Optionally, both the first elastic member 3 and the second elastic member 44 can be springs.

[0041] As Figure 1 shown, in an embodiment of the present invention, the connection mechanism includes: a connection assembly and a connecting member 51. The connection assembly is threadedly connected to the sliding member 1, and the connecting member 51 is connected to the connection assembly and the cutter 61. The cutter 61 is used to cut off the connecting member 51 so that the connecting member 51 is separated from the cutter 61.

[0042] As Figure 1 shown, the connection assembly includes: a first lug 52, a wire wheel 53, and a connection seat 54. The sliding member 1 is threadedly connected to the first lug 52. The first lug 52 has a pin shaft 521. The wire wheel 53 is sleeved outside the pin shaft 521 and can rotate relative to the pin shaft 521. The wire wheel 53 is used to wind the parachute cord. The connection seat 54 is connected to the first lug 52. The connecting member 51 is connected to the connection seat 54 and the cutter 61. When the cutter 61 cuts off the connecting member 51, the connection assembly is separated from the cutter 61, and the sliding member 1 starts to move downward under the elastic force of the first elastic member 3.

[0043] As Figure 1 shown, the parachute nacelle separation device further includes a mounting seat 62. The mounting seat 62 is connected to the bottom surface of the third sleeve 43. The cutter 61 is disposed on the mounting seat 62. After the connecting member 51 is cut off, the cutter 61, the mounting seat 62, and the third sleeve 43 remain in a connected state. Optionally, the parachute nacelle separation device may further include a mounting bracket 63. The mounting bracket 63 is mounted on the mounting seat 62, and the cutter 61 is mounted on the mounting bracket 63.

[0044] Further, in an embodiment of the present invention, the first end of the connecting member 51 is connected to the connection seat 54, and the second end of the connecting member 51 passes through the cutter 61 and is connected to the mounting bracket 63. Optionally, the cutter 61 can be a laser cutting machine to cut off the connecting member 51 with laser; optionally, a blade can also be provided in the cutter 61. The blade is connected to a linear motor. When the linear motor operates, it drives the blade to move toward the connecting member 51 to cut off the connecting member 51.

[0045] As Figure 1 shown, in an embodiment of the present invention, the parachute nacelle separation device further includes a second lug 7. The second lug 7 is sleeved outside the second sleeve 42 and is connected to the second sleeve 42. The second lug 7 is used to connect to the nacelle of the parachute.

[0046] In actual use, when the height between the cabin of the parachute and the ground reaches a preset height, the cutter 61 is controlled to operate, and the cutter 61 cuts off the connecting member 51. The parachute carries the cabin and continues to fall until the cabin touches the ground. The parachute continues to descend, the tension on the parachute ropes decreases, and the tension is less than the elastic force of the first elastic member 3. The sliding member 1 moves downward under the action of the elastic force, so that the sliding block 2 moves to the second position, thereby promoting the separation of the first sleeve 41 and the second sleeve 42.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A parachute cabin separation device, characterized in that: include: Connecting mechanism, cutter, slide, sleeve assembly and slide block; The part of the connecting mechanism is connected to the cutter, the cutter is connected to the sleeve assembly, the cutter is used to cut off the part of the connecting mechanism to separate the connecting mechanism from the cutter, and the connecting mechanism is used to connect to the parachute rope; The first end of the sliding member is threadedly connected to the connecting mechanism, and the second end of the sliding member is elastically connected to the sleeve assembly. When part of the connecting mechanism is cut off, the sliding member can move relative to the sleeve assembly under the action of elastic force; The sliding block has a first position and a second position. When the portion of the connecting mechanism is not cut off, the sliding member abuts against the sliding block, and the sliding block is inserted into the upper part and the lower part of the sleeve assembly. When the sliding block is in the first position, the upper part and the lower part of the sleeve assembly are connected. When part of the connecting mechanism is cut off, the sliding member is separated from the sliding block, the sliding block moves to the outside of the lower part of the sleeve assembly, the sliding block is in the second position, and the upper part of the sleeve assembly is separated from the lower part; The sleeve assembly comprises: a first sleeve, a second sleeve and a force applying member; The second sleeve is sleeved on the lower part of the first sleeve, the force applying member is arranged above the second sleeve and abuts against the second sleeve, the first sleeve is the upper part of the sleeve assembly, and the second sleeve is the lower part of the sleeve assembly; The inner wall of the second sleeve and the sliding block are provided with inclined surfaces that slide in cooperation with each other, and the force applying member is used to force the sliding block to be in the second position after the sliding member is separated from the sliding block; A through hole is provided on the wall surface of the first sleeve, a groove is provided on the inner wall of the second sleeve, the first end of the sliding block is inserted into the through hole, and the second end of the sliding block is embedded in the groove; The second end of the sliding block is provided with a first inclined surface, and the inner wall of the groove is provided with a second inclined surface that slides in cooperation with the first inclined surface.

2. The parachute cabin separation device according to claim 1, characterized in that: The sliding member comprises a first body portion and a second body portion connected to each other, wherein the diameter of the second body portion is greater than the diameter of the first body portion; The first body part is threadedly connected to the connecting mechanism, the second body part is elastically connected to the sleeve assembly, and when the side surface of the second body part abuts against the side surface of the sliding block, the sliding block is in the first position; When the second body portion is separated from the sliding block, the sliding block is in the second position.

3. The parachute cabin separation device according to claim 2, characterized in that: It also includes a first elastic member, which is arranged in the sleeve assembly. Two ends of the first elastic member are respectively in contact with the inner wall of the sleeve assembly and the second body portion, and the first elastic member is in a compressed state.

4. The parachute cabin separation device according to claim 1, characterized in that: The sleeve assembly further includes a third sleeve, which is sleeved on the upper portion of the first sleeve and connected to the first sleeve; The force-applying member is arranged between the third sleeve and the first sleeve, and two ends of the force-applying member are respectively in contact with the third sleeve and the second sleeve. The force-applying member is a second elastic member, and the second elastic member is in a compressed state.

5. The parachute cabin separation device according to claim 1, characterized in that: The connection mechanism comprises: a connection assembly and a connection piece, wherein the connection assembly is threadedly connected to the sliding piece, the connection piece is connected to the connection assembly and the cutter, and the cutter is used to cut off the connection piece.

6. The parachute cabin separation device according to claim 5, characterized in that: The connecting assembly comprises: a first lifting lug, a connecting seat and a wire wheel, the sliding member is threadedly connected to the first lifting lug, the first lifting lug has a pin shaft, the wire wheel is sleeved outside the pin shaft and can rotate relative to the pin shaft, and the wire wheel is used to wind the parachute rope; The connecting seat is connected to the first lifting ear, and the connecting piece is connected to the connecting seat.

7. The parachute cabin separation device according to claim 4, characterized in that: It also includes a mounting seat, which is connected to the third sleeve, and the cutter is arranged on the mounting seat.

8. The parachute cabin separation device according to claim 1, characterized in that: It also includes a second lifting ear, which is sleeved on the outside of the second sleeve and connected to the second sleeve, and the second lifting ear is used to connect to the cabin of the parachute.

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