Separation structure, automatic separation device of parachute pod and application

Abstract

The present application relates to a separation structure and a parachute pod automatic separation device containing the separation structure and application, the separation structure includes a frame shell, an elastic reset assembly and a connecting rod boss, a blind hole is formed on the frame shell, a lock hole is arranged on the blind hole wall; the elastic reset assembly is installed in the lock hole and can do elastic reciprocating motion in the lock hole; the connecting rod boss is located in the blind hole, the connecting rod boss includes a boss and a connecting rod connected with each other, a movable sliding boss is sleeved on the connecting rod, and the connecting rod boss is suitable for switching along the blind hole among the locking position, the unlocking non-separation position and the unlocking separation position, the present application designs a mechanical separation structure for automatically separating the parachute from the pod according to the size of the ground transverse wind after the pod lands, so that the pod can be prevented from being secondarily damaged by the ground wind drag after landing, and the mechanical automatic separation structure is simple, reliable, cheap and compared with the optical or electromagnetic judgment cutting used in the present return capsule recovery.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aerostat, in particular to a separation structure, an automatic separation device of parachute pod and application. BACKGROUND

[0002] The aerostat includes two types of high altitude balloon and airship, wherein the high altitude balloon is also called high altitude scientific balloon, which is a kind of non-powered aircraft using light gas to generate net buoyancy to realize the lift-off from the ground and the hovering flight in the stratosphere, and the flight height is generally located in the stratosphere (even up to 40-50km), which is a large carrier for high altitude scientific observation or experiment developed gradually in recent decades. According to the difference between the internal pressure of the balloon and the atmospheric pressure, the high altitude balloon is generally divided into two categories of zero pressure balloon and overpressure balloon, which plays an increasingly important role in the exploration of basic disciplines, aerospace, environment and other fields.

[0003] The high altitude balloon system includes a balloon, a parachute, a pod, a load in the pod and the like: the balloon is responsible for providing the buoyancy for the hovering flight of the whole system; the pod is used as an installation carrier of the flight control device and the scientific load device; the flight control device is the brain of the high altitude balloon system, which controls the flight trajectory such as take-off and landing of the system; the scientific load device determines the specific task to be executed in one high altitude flight; and the parachute determines the safe landing of the device in the pod after the completion of the flight task and the intact recovery.

[0004] The high altitude balloon flight test is generally selected in the gobi area with few people, and the area has the characteristics of complex terrain and large ground wind sand, which threatens the safe recovery of the pod device. In the past, there have been instances that: after the parachute carrying the pod lands on the ground, the parachute and the pod are still connected and not separated, and when the ground crosswind attacks suddenly, the parachute will drag the pod to slide on the ground for a long distance, causing secondary damage to the pod and the device in the pod. Especially for the valuable optical observation device, the safe and intact recovery of the pod and the device is particularly important. SUMMARY

[0005] The present application provides a separation structure, an automatic separation device of parachute pod and application, which aims to research the safe recovery technology of the high altitude balloon pod, and designs a mechanical structure for automatically separating the parachute from the pod according to the size of the ground crosswind after the pod lands on the ground, so as to ensure that the pod is not subjected to the secondary damage of ground wind drag after landing, realize the safe recovery of the pod device, and especially realize the safe recovery of the valuable optical observation device in the pod device.

[0006] The application provides a separation structure, which comprises a frame shell, an elastic reset component and a connecting rod boss, one end of the frame shell is provided with a blind hole, a lock hole penetrating through the frame shell is arranged on the hole wall of the blind hole, the elastic reset component is installed in the lock hole and can make elastic reciprocating motion in the lock hole to switch between a reset position extending into the blind hole and a retraction position retracting into the lock hole, the connecting rod boss is located in the blind hole, the connecting rod boss comprises a boss and a connecting rod connected with each other, a sliding boss capable of moving on the connecting rod is sleeved on the connecting rod, the connecting rod boss is adapted to switch among a locking position, an unlocking non-separation position and an unlocking separation position along the blind hole, in the locking position, the elastic reset component is located between the boss and the connecting rod, in the unlocking non-separation position, the boss and the connecting rod are located on one side of the elastic reset component away from the inner end of the blind hole, and in the unlocking separation position, the boss and the connecting rod are located on one side of the elastic reset component away from the inner end of the blind hole.

[0007] According to the separation structure provided by the application, the elastic reset component comprises a limiting wedge-shaped pin and a limiting spring, a limiting table is arranged in the lock hole, a limiting protrusion is arranged on the outer wall of the limiting wedge-shaped pin, and the limiting spring is connected to the limiting table and the limiting protrusion at two ends respectively.

[0008] The end of the limiting wedge-shaped pin away from the inner end of the blind hole is provided with a slope facing away from the inner end of the blind hole, and the side surface of the sliding boss is a slope facing away from the inner end of the blind hole.

[0009] According to the separation structure provided by the application, the lock hole is at least two, and all the lock holes are uniformly distributed along the circumference of the blind hole, and each lock hole is internally provided with the elastic reset component.

[0010] According to the separation structure provided by the application, the connecting rod is provided with a limiting piece, the limiting piece is located on one side of the sliding boss away from the boss, so that the sliding boss moves between the boss and the limiting piece.

[0011] According to the separation structure provided by the application, the side surface of the boss is a slope facing the inner end of the blind hole.

[0012] The application also provides an automatic separation device for a parachute and a pod, which comprises the above separation structure and further comprises a parachute and a pod, the parachute is connected to the end of the frame shell away from the blind hole through a parachute rope, and the pod is connected to the end of the connecting rod away from the boss through a connecting rod.

[0013] The automatic separation device of the parachute pod provided by the application comprises a frame shell, a plurality of locking holes, a locking clamp, an electric control cutting device and a connecting rod.

[0014] The automatic separation device of the parachute pod provided by the application comprises a frame shell, a plurality of locking holes, a locking clamp, an electric control cutting device and a connecting rod.

[0015] The automatic separation device of the parachute pod provided by the application comprises a frame shell, a plurality of locking holes, a locking clamp, an electric control cutting device and a connecting rod.

[0016] The application also provides an application of the automatic separation device of the parachute pod.

[0017] The separation structure, the automatic separation device of the parachute pod and the application provided by the application can ensure that the pod is not subjected to secondary damage caused by ground wind drag after landing, and the mechanical automatic separation structure has the advantages of simplicity, reliability and low cost compared with optical or electromagnetic judgment cutting used in the existing recovery separation device. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 is a cross-sectional structure schematic view of the separation structure provided by the application;

[0020] Figure 2 is a cross-sectional structure schematic view of the separation structure provided by the application;

[0021] Figure 3 is a structure schematic view of the separation structure when the connecting rod protrusion is in the locking position;

[0022] Figure 4is the structural schematic view of the connecting rod boss in the unlocking and separating position in the separating structure provided by the application;

[0023] Figure 5 is the structural schematic view of the connecting rod boss in the unlocking and separating position in the separating structure provided by the application;

[0024] Figure 6 is the structural schematic view of the automatic separating device of the parachute pod provided by the application.

[0025] Reference signs:

[0026] 1, frame shell; 2, elastic reset assembly; 3, connecting rod boss; 4, parachute; 5, pod; 6, locking clamp; 7, electric control cutting device;

[0027] 1-1, blind hole; 1-2, locking hole; 1-3, lifting ring

[0028] 2-1, limiting wedge-shaped pin; 2-2, limiting spring;

[0029] 3-1, boss; 3-2, connecting rod; 3-3, sliding boss; 3-4, limiting piece; 3-5, annular connecting piece; 3-6, lifting lug. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the embodiments of the present application, it should be noted that unless specifically defined and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0033] In the embodiments of the present application, unless specifically defined and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0034] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0035] One embodiment of the present application provides a separation structure, as shown in Figure 1 As shown, it comprises a frame shell 1, an elastic reset assembly 2 and a connecting rod boss 3, one end of the frame shell 1 is provided with a blind hole 1-1, and a lock hole 1-2 penetrating the frame shell 1 is arranged on the hole wall of the blind hole 1-1; the elastic reset assembly 2 is installed in the lock hole 1-2 and can do elastic reciprocating motion in the lock hole 1-2 to switch between the reset position extending into the blind hole 1-1 and the retracted position retracting into the lock hole 1-2; the connecting rod boss 3 is located in the blind hole 1-1, the connecting rod boss 3 comprises a boss 3-1 and a connecting rod 3-2 connected with each other, a sliding boss 3-3 capable of moving on the connecting rod 3-2 is sleeved on the connecting rod 3-2, and the connecting rod boss 3 is adapted to switch along the blind hole 1-1 between the locking position, the unlocking non-separation position and the unlocking separation position; as shown in Figure 3 As shown, in the locking position, the elastic reset assembly 2 is located between the boss 3-1 and the connecting rod 3-2; as shown inFigure 4 As shown, in the unlocked non-separation position, the boss 3-1 and the connecting rod 3-2 are together on the side of the elastic reset component 2 towards the inner end of the blind hole 1-1; see Figure 5 As shown, in the unlocked separation position, the boss 3-1 and the connecting rod 3-2 are together on the side of the elastic reset component 2 away from the inner end of the blind hole 1-1.

[0036] The initial position of the separation structure of the embodiment is that the connecting rod boss 3 is in the locking position; see Figure 3 As shown, in the locking position, the elastic reset component 2 is in the reset position extending into the blind hole 1-1, the lower end surface of the boss 3-1 of the connecting rod boss 3 is seated on the elastic reset component 2, and there is a sliding boss 3-3 below the elastic reset component 2. At this time, the frame shell 1 and the connecting rod boss 3 are locked by the elastic reset component 2 and form an integral structure. When unlocking is needed, the connecting rod boss 3 moves upward, driving the sliding boss 3-3 to touch the elastic reset component 2. The sliding boss 3-3 presses the elastic reset component 2 from the reset position to the retracted position. The sliding boss 3-3 and the boss 3-1 together pass through the elastic reset component 2 and are on the side of the elastic reset component 2 towards the inner end of the blind hole 1-1; see Figure 4 At this time, the connecting rod boss 3 is in the unlocked non-separation position, and the elastic reset component 2 automatically resets to be in the reset position again. In the unlocked non-separation state, see Figure 5 As shown, the sliding boss 3-3 and the boss 3-1 move downward together. The sliding boss 3-3 touches the elastic reset component 2 again. The sliding boss 3-3 presses the elastic reset component 2 again from the reset position to the retracted position. The sliding boss 3-3 and the boss 3-1 together pass through the elastic reset component 2. At this time, the connecting rod boss 3 is in the unlocked separation position, and the connecting rod boss 3 and the frame shell 1 can be separated, realizing the separation of the mechanical structure. This purely mechanical separation structure has the advantages of simplicity, reliability and low cost, and can be applied to various devices that need to be separated, especially devices that need to be reliably separated.

[0037] In the above separation structure, the key to separation is the interaction between the sliding boss 3-3 and the elastic reset component 2. In the embodiment, the interaction between the two is further described. In the embodiment, the elastic reset component 2 includes a limiting wedge-shaped pin 2-1 and a limiting spring 2-2. A limiting table is arranged in the locking hole 1-2. A limiting protrusion is arranged on the outer wall of the limiting wedge-shaped pin 2-1. The limiting spring 2-2 is connected to the limiting table and the limiting protrusion at both ends. The end of the limiting wedge-shaped pin 2-1 towards the blind hole 1-1 is provided with a slope facing away from the inner end of the blind hole 1-1. The side surface of the sliding boss 3-3 is a slope facing away from the inner end of the blind hole 1-1.

[0038] See Figure 3As shown, this is the locking position of the frame shell 1 and the connecting rod boss 3, which is also the initial position. In this state, the limiting spring 2-2 is in a natural stretched state, the one end of the limiting wedge-shaped pin 2-1 extends into the blind hole 1-1, and the lower end surface of the boss 3-1 is seated on the limiting wedge-shaped pin 2-1 and is limited, so that the frame shell 1 and the connecting rod boss 3 cannot be separated from each other, and locking is achieved. When unlocking is needed, the connecting rod boss 3 moves upward, driving the sliding boss 3-3 to touch the limiting wedge-shaped pin 2-1. The edge of the sliding boss 3-3 will move along the slope of the end of the limiting wedge-shaped pin 2-1. As the edge of the sliding boss 3-3 continuously rises along the slope, the limiting wedge-shaped pin 2-1 will be pressed into the lock hole 1-2. The limiting protrusion of the limiting wedge-shaped pin 2-1 extrudes the limiting spring 2-2, so that the limiting spring 2-2 is in a compressed state. Until the edge of the sliding boss 3-3 completely passes through the slope of the end of the limiting wedge-shaped pin 2-1, the limiting spring 2-2 is no longer extruded. The limiting spring 2-2 pushes the limiting wedge-shaped pin 2-1 to move in the direction of the blind hole 1-1, so that the end of the limiting wedge-shaped pin 2-1 extends into the blind hole 1-1 again. At this time, the sliding boss 3-3 and the boss 3-1 are located above the limiting wedge-shaped pin 2-1 together. See Figure 4 As shown, this is the unlocking and non-separation position of the frame shell 1 and the connecting rod boss 3. When separation is needed, the sliding boss 3-3 and the boss 3-1 move downward relative to the frame shell 1, and the sliding boss 3-3 again presses the limiting wedge-shaped pin 2-1. At this time, the side slope of the sliding boss 3-3 is in contact with the edge of the end of the limiting wedge-shaped pin 2-1. As the boss 3-1 and the sliding boss 3-3 continue to move downward, the edge of the end of the limiting wedge-shaped pin 2-1 is extruded by the side slope of the sliding boss 3-3 and is retracted into the lock hole 1-2. The limiting protrusion of the limiting wedge-shaped pin 2-1 extrudes the limiting spring 2-2, so that the limiting spring 2-2 is again in a compressed state. Until the sliding boss 3-3 and the boss 3-1 completely pass through the limiting wedge-shaped pin 2-1, the limiting spring 2-2 is no longer extruded. The limiting spring 2-2 pushes the limiting wedge-shaped pin 2-1 to move in the direction of the blind hole 1-1, so that the end of the limiting wedge-shaped pin 2-1 extends into the blind hole 1-1 again. At this time, the sliding boss 3-3 and the boss 3-1 are located below the limiting wedge-shaped pin 2-1 together. See Figure 5 As shown, this is the unlocking and separation position of the frame shell 1 and the connecting rod boss 3, and the frame shell 1 and the connecting rod boss 3 are separated from each other.

[0039] Based on the above embodiments, in order to ensure the stability and reliability of the separation structure during operation, in this embodiment, there are at least two locking holes 1-2. All locking holes 1-2 are evenly distributed around the blind hole 1-1. Each locking hole 1-2 is equipped with an elastic reset component 2. The optimal solution should be three or four. When there are three locking holes 1-2, the three locking holes 1-2 are evenly distributed around the blind hole 1-1 at a 120-degree angle to each other (when there are four locking holes 1-2, the four locking holes 1-2 are evenly distributed around the blind hole 1-1 at a 90-degree angle to each other). This ensures that the sliding boss 3-3 and the limiting wedge pin 2-1 are subjected to circumferentially balanced forces when they press against each other, thus maintaining the stability and reliability of the structure.

[0040] Connecting rod 3-2 is fitted with a limiting component 3-4, which is located on the side of sliding boss 3-3 away from boss 3-1, allowing sliding boss 3-3 to move between boss 3-1 and limiting component 3-4. The limiting component 3-4 can be a nut or other limiting part that can be mounted on connecting rod 3-2. For ease of disassembly and assembly, threads can be provided on connecting rod 3-2, and the nut limiting component can be screwed onto connecting rod 3-2. Similarly, for ease of assembly and disassembly, in this embodiment, the side of the boss 3-1 is an inclined surface facing the inner end of the blind hole 1-1. Setting the side of the boss 3-1 as an inclined surface is also to facilitate the initial assembly. The connecting rod boss 3 is directly inserted into the blind hole 1-1. When the inclined surface of the boss 3-1 touches the inclined surface at the end of the limiting wedge pin 2-1, the two inclined surfaces press against each other, causing the limiting wedge pin 2-1 to retract into the locking hole 1-2. After the boss 3-1 passes the limiting wedge pin 2-1, under the action of the limiting spring 2-2, the limiting wedge pin 2-1 extends into the blind hole 1-1 again. At this time, the lower end face of the boss 3-1 sits on the limiting wedge pin 2-1, so that the frame housing 1 and the connecting rod boss 3 are in the locked position.

[0041] The present invention also provides an automatic parachute pod separation device, see below. Figure 6 As shown, the structure includes the separation structure in the above embodiment, and also includes a parachute 4 and a pod 5. The parachute 4 is connected to the end of the frame shell 1 facing away from the blind hole 1-1 by parachute ropes; the pod 5 is connected to the end of the connecting rod 3-2 away from the boss 3-1 by a connecting rod.

[0042] The automatic parachute pod separation device of the present invention is implemented as follows: The parachute 4 and the pod 5 are connected by the separation structure in the locked position. The parachute 4, carrying the pod 5, descends to the ground at a constant speed. At the instant the pod 5 touches the ground, due to inertia, the frame shell 1 continues to descend to another position. The pod 5, being a rigid structure, loses its vertical velocity upon landing, and the connecting rod boss 3 connected to the pod 5 also loses its vertical velocity. At this time, the frame shell 1 and the connecting rod boss 3 will undergo relative displacement, that is, the frame shell 1 and the connecting rod boss 3 will move from the locked position to the unlocked, unseparated position. At this time, the parachute 4 and the pod 5... The pod 5 is not yet separated. The separation condition between parachute 4 and pod 5 depends on the strength of the crosswind. When the crosswind is strong, parachute 4 will be re-inflated, causing it to pull pod 5. When this pulling force is strong, the frame shell 1 and connecting rod boss 3 in the separation structure between parachute 4 and pod 5 will move relative to each other again, changing from the unlocked but not separated state to the unlocked and separated state. At this point, the frame shell 1 and connecting rod boss 3 will detach, and parachute 4 and pod 5 will separate. After the recovery team reaches the landing point, parachute 4 may be blown away by the ground wind, but pod 5 will remain in place and can be recovered intact. If the crosswind remains weak or there is no wind, the frame shell 1 and connecting rod boss 3 will remain in the unlocked but not separated position, and parachute 4 and pod 5 will not separate. After the recovery team reaches the landing point, both parachute 4 and pod 5 can be recovered intact.

[0043] To ensure the reliability of the automatic parachute pod separation device, in this embodiment, see [reference needed]. Figure 2As shown, the frame shell 1 is a cylindrical shell with multiple lock holes 1-2. The multiple lock holes 1-2 are evenly distributed circumferentially on the side of the cylindrical shell. A circumferential annular groove is provided on the side of the cylindrical shell. The annular groove corresponds to and overlaps with the distribution circle of the multiple lock holes 1-2. A locking clamp 6 is installed in the annular groove. An electrically controlled cutting device 7 is embedded in the locking clamp 6. The locking clamp 6 covers all the lock holes 1-2. Under normal conditions, the locking clamp 6 will lock all the locking holes 1-2, ensuring that the automatic parachute pod separation device remains locked during flight operations. This prevents the elastic reset component 2 within the locking holes 1-2 from moving due to unforeseen factors, thus preventing the device from separating when it shouldn't. When landing is determined, the flight control computer within the pod 5 sends an electrical signal to the electronically controlled cutting device 7. The electronically controlled cutting device 7 executes the cutting command, cutting off the locking clamp 6 and causing it to fall. At this point, the automatic parachute pod separation device is in the unlocked state, but mechanical unlocking has not yet occurred; it will wait for the device to land before mechanical unlocking. The reason for cutting before landing, rather than cutting after the high-altitude balloon and pod separate, is to prevent ground signals from failing to reach the flight control computer during landing. The electronically controlled cutting device 7 involved in this embodiment is a conventional existing device or system, and its structure will not be described in detail here.

[0044] This embodiment further refines the automatic separation device for the parachute pod based on the above embodiment. A lifting ring 1-3 is fixed to the center of the end of the frame shell 1 facing away from the blind hole 1-1 via a connector (lifting ring bolt). The parachute 4 is bound to the lifting ring 1-3 via parachute lines. An annular connector 3-5 is fixedly installed at the end of the connecting rod 3-2 away from the boss 3-1. The annular connector 3-5 can be a fixed connector or a nut screwed onto the connecting rod 3-2. Multiple lifting lugs 3-6 are circumferentially arranged on the annular connector 3-5, and the pod 5 is connected to the lifting lugs 3-6 via a connecting rod.

[0045] Based on the above embodiments, this embodiment provides a specific structure for an automatic parachute pod separation device, mainly consisting of an upper, middle, and lower structure. (See attached image.) Figures 1 to 6 As shown, the longitudinal direction is the direction of force bearing.

[0046] The upper structure includes lifting rings 1-3 and the main load-bearing frame housing 1. Lifting rings 1-3 are standard structural components; the uppermost lifting ring 1-3 is bolted to the top of the frame housing 1, and is used to connect the parachute lines of the parachute 4. The frame housing 1 is the main load-bearing component of the entire device and also serves as the reference component for the installation of other parts. The frame housing 1 adopts a hollow cylindrical section design, with a smaller diameter frustum at the top of the cylindrical section for mounting the lifting rings 1-3. The hollow portion of the cylindrical section is a blind hole 1-1, which provides the travel space for the main load-bearing connecting rod boss 3. At the lower third of the cylindrical section, a stepped locking hole 1-2 is opened in each of the four cardinal directions (north, south, east, and west) for mounting the limiting wedge pin 2-1 and the limiting spring 2-2.

[0047] The central structure mainly consists of four limiting wedge pins 2-1 and limiting springs 2-2 embedded within the frame housing 1. The limiting wedge pins 2-1 are structural components connecting the frame housing 1 and the connecting rod boss 3, and also serve as important load-bearing parts, providing both limiting and load-bearing functions. The limiting springs 2-2 fix the limiting wedge pins 2-1, providing a lateral preload to ensure they tightly grip the connecting rod boss 3 and withstand longitudinal forces. During flight, the limiting wedge pins 2-1, limiting springs 2-2, and locking clamps 6 work together. The limiting springs 2-2 press against the limiting wedge pins 2-1, and the locking clamps 6 also fix the end of the limiting wedge pins 2-1, at which point the automatic separation device is locked. Upon landing impact, the connecting rod boss 3 moves upward, pushing the limiting wedge pins 2-1 to compress the limiting springs 2-2, at which point the automatic separation device is unlocked.

[0048] The lower structure includes a connecting rod boss 3, a sliding boss 3-3, a limiting member 3-4, and a bottom annular connector 3-5. The annular connector 3-5 is threaded to the connecting rod 3-2. Simultaneously, the four lugs 3-6 of the annular connector 3-5 are connected to the connecting rod of the pod 5 to secure it. Therefore, the weight of the pod 5 is entirely transferred to the connecting rod boss 3, and then to the frame housing 1 via the limiting wedge pin 2-1. The sliding boss 3-3 functions during the automatic separation device's state transition. In the locked position, the limiting wedge pin 2-1 is located between the boss 3-1 and the sliding boss 3-3. When the pod 5 impacts the ground, the connecting rod boss 3, along with the sliding boss 3-3, moves upward to push and compress the limiting spring 2-2. Finally, when the limiting wedge pin 2-1 returns to its original position, it is below the sliding boss 3-3, indicating the unlocked, non-separated position. The limiting member 3-4 prevents the sliding boss 3-3 from falling, providing a certain degree of restraint.

[0049] In addition, a locking clamp 6 and an electrically controlled cutting device 7 are installed on the outer contour of the frame shell 1. The function of the locking clamp 6 is to restrict the horizontal movement of the limiting wedge pin 2-1 during flight, keeping the automatic separation device in a locked state. After the flight mission is completed, when the parachute 4 carrying the pod 5 is slowly descending, a cutting command can be sent through the flight control computer inside the pod 5. The electrically controlled cutting device 7 will then cut off the locking clamp 6 and drop it. Afterward, the parachute-pod system is in the descent phase, and the parachute-pod automatic separation device waits for the impact of the pod 5 landing to mechanically unlock.

[0050] This invention also provides an application of the automatic parachute-pod separation device, which is used in high-altitude balloon flight tests. The high-altitude balloon is connected to the automatic parachute-pod separation device, and the recovery process after the mission is as follows:

[0051] 1. After the high-altitude balloon flight mission ends, the balloon parachute separates, and the parachute 4, carrying the separation structure and the pod 5, descends at a certain speed.

[0052] 2. The operator sends a cutting command to the electronically controlled cutting device 7 through the flight control computer inside the pod 5. The electronically controlled cutting device 7 cuts the locking clamp 6, and the first layer of safety of the parachute-pod automatic separation device is unlocked.

[0053] 3. When the parachute-pod automatic separation device lands on the ground, the impact of the ground on the pod 5 will push the frame housing 1 and the connecting rod boss 3 to move relative to each other. At this time, the frame housing 1 and the connecting rod boss 3 will move from the locked position to the unlocked and unseparated position.

[0054] 4. When the frame shell 1 and the connecting rod boss 3 are in the unlocked and unseparated position, the parachute 4 and the pod 5 will not separate immediately. Separation requires the condition of crosswind on the ground. When the crosswind on the ground is small, the parachute 4 will not pull the frame shell 1 away from the connecting rod boss 3. Of course, at this time, the crosswind on the ground is small, which is also safe for the pod 5.

[0055] 5. When there is a strong crosswind on the ground, the wind will pull the parachute 4 and the frame shell 1 to move. At this time, the frame shell 1 and the connecting rod boss 3 will move relative to each other again, moving from the unlocked and unseparated position to the unlocked and separated position. The parachute 4, along with the frame shell 1 and the connecting rod boss 3, will separate, and the parachute and the cabin will separate. After the parachute and the cabin separate, the ground wind will blow away the parachute 4, but the cabin 5 will remain in place and wait for the search and rescue personnel to retrieve it in time.

[0056] Based on the separation structure, automatic parachute pod separation device, high-altitude balloon, and implementation process of all the above embodiments provided by this invention, it can be seen that this invention has the following fundamental advantages compared with existing recovery technologies:

[0057] 1. After the manned return capsule lands, there is also an automatic parachute-cabin separation device. However, it relies on optics or electromagnetics to determine the timing of cutting, and the whole system is expensive and complex. The present invention designs a mechanical automatic parachute-cabin separation device, which is relatively simple, reliable and inexpensive.

[0058] 2. In the field of high-altitude balloons, automatic parachute-pod separation devices are generally not used after the pod lands. Even if certain specific missions require the addition of a separation device, the flight control computer sends a command after landing to cut the parachute connecting ropes using a cutter. However, if the pod loses power or ground signals are blocked, parachute-pod separation cannot be achieved. In contrast, mechanical separation devices are more reliable. The automatic parachute-pod separation device is in the unlocked state before landing and waits for the device to be mechanically unlocked after landing. This can prevent the problem of ground signals being blocked during landing and unable to be transmitted to the flight control computer.

[0059] 3. Based on the principle of mechanical spring pressure control and simple mechanical structure, this invention realizes automatic unlocking control of the parachute-pod separation device. At the same time, the system may not complete the separation after unlocking. When the ground wind is low, the parachute and pod will not separate, and the parachute and pod can be fully recovered. Only when the ground wind is strong will the parachute and pod separate, and the parachute and pod can be recovered separately.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions 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 separation structure, characterized in that, include: A frame housing (1) has a blind hole (1-1) at one end, and a lock hole (1-2) penetrating the frame housing (1) is provided on the wall of the blind hole (1-1). An elastic reset assembly (2) is installed in the lock hole (1-2) and can perform elastic reciprocating motion within the lock hole (1-2) to switch between a reset position extending into the blind hole (1-1) and a retracted position retracting into the lock hole (1-2); the elastic reset assembly (2) includes a limiting wedge pin (2-1) and a limiting spring (2-2); a limiting platform is provided in the lock hole (1-2); a limiting protrusion is provided on the outer wall of the limiting wedge pin (2-1); the two ends of the limiting spring (2-2) are respectively connected to the limiting platform and the limiting protrusion; the end of the limiting wedge pin (2-1) facing the blind hole (1-1) is provided with an inclined surface facing away from the inner end of the blind hole (1-1); A connecting rod boss (3) is located inside the blind hole (1-1). The connecting rod boss (3) includes a boss (3-1) and a connecting rod (3-2) connected to each other. A sliding boss (3-3) that can move on the connecting rod (3-2) is fitted on the connecting rod (3-2). The side of the sliding boss (3-3) is an inclined surface facing away from the inner end of the blind hole (1-1). The connecting rod boss (3) is adapted to switch along the blind hole (1-1) in the locked position, the unlocked but not separated position and the unlocked and separated position. In the locked position, the elastic reset assembly (2) is located between the boss (3-1) and the connecting rod (3-2); in the unlocked but not separated position, the boss (3-1) and the connecting rod (3-2) are together located on the side of the elastic reset assembly (2) facing the inner end of the blind hole (1-1); in the unlocked and separated position, the boss (3-1) and the connecting rod (3-2) are together located on the side of the elastic reset assembly (2) away from the inner end of the blind hole (1-1).

2. The separation structure according to claim 1, characterized in that, There are at least two lock holes (1-2), and all the lock holes (1-2) are evenly distributed around the blind hole (1-1). Each lock hole (1-2) is equipped with the elastic reset component (2).

3. The separation structure according to claim 2, characterized in that, The connecting rod (3-2) is equipped with a limiting member (3-4), which is located on the side of the sliding boss (3-3) away from the boss (3-1), so that the sliding boss (3-3) can move between the boss (3-1) and the limiting member (3-4).

4. The separation structure according to claim 3, characterized in that, The side of the boss (3-1) is an inclined surface facing the inside of the blind hole (1-1).

5. An automatic separation device for a parachute pod, characterized in that, Including the separation structure as described in any one of claims 1 to 4, further comprising: Parachute (4), the parachute (4) is connected by parachute lines to the end of the frame shell (1) facing away from the blind hole (1-1); The pod (5) is connected by a connecting rod to the end of the connecting rod (3-2) away from the boss (3-1).

6. The automatic parachute pod separation device according to claim 5, characterized in that, The frame housing (1) is a cylindrical housing. There are multiple lock holes (1-2). The multiple lock holes (1-2) are evenly distributed circumferentially on the side of the cylindrical housing. A circumferential annular groove is provided on the side of the cylindrical housing. The annular groove corresponds to and overlaps with the distribution circle of the multiple lock holes (1-2). A locking clamp (6) is installed in the annular groove. An electrically controlled cutting device (7) is embedded in the locking clamp (6). The locking clamp (6) covers all the lock holes (1-2).

7. The automatic parachute pod separation device according to claim 6, characterized in that, The frame shell (1) is fixed with a sling (1-3) at the center of the end facing away from the blind hole (1-1) by a connector, and the parachute (4) is connected to the sling (1-3) by parachute ropes.

8. The automatic parachute pod separation device according to claim 5, characterized in that, An annular connector (3-5) is fixedly installed at the end of the connecting rod (3-2) away from the boss (3-1). The annular connector (3-5) is provided with a plurality of lifting lugs (3-6) in the circumferential direction. The pod (5) is connected to the lifting lugs (3-6) through a connecting rod.

9. The application of an automatic parachute pod separation device, characterized in that, The automatic parachute pod separation device is the automatic parachute pod separation device according to any one of claims 5 to 8, and the application is to apply the automatic parachute pod separation device to high-altitude balloon flight tests.

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