Delayed automatic separation device and automatic unlocking method thereof

Abstract

The invention discloses a time-delay automatic separation device and an automatic unlocking method thereof, and relates to the technical field of air-drop. The time-delay automatic separation device comprises an upper hanging ring, a hook assembly, a time-delay assembly, an unlocking assembly and a lower hanging ring; the upper hanging ring is hung on a hanging hole above the hook assembly, the lower hanging ring is hung on an arc-shaped hook of the hook assembly, the upper hanging ring is connected with an air-drop umbrella, and the lower hanging ring is connected with an air-drop object; the hook assembly is mainly used for bearing the load when the air-drop object descends, the hook assembly is internally provided with an installation containing space used for the time delay assembly and the unlocking assembly, and the time delay assembly is located in the middle of the unlocking assembly and used for delaying the unlocking mechanism and preventing air unlocking separation. The unmanned aerial vehicle is exquisite in design and stable and reliable in structure, air safety and landing separation safety of goods can be ensured no matter whether the unmanned aerial vehicle is in high-altitude air-drop or landing separation, and the air-drop efficiency and safety can be improved.

Description

Technical Field

[0001] This invention relates to the field of airdrop technology, and more specifically to the field of a time-delayed automatic separation device and its automatic unlocking method. Background Technology

[0002] Currently, drone-based airdrops have become an important means of disaster relief, supplying remote areas, military operations, and delivering emergency medical supplies. Dropping supplies is a typical application of drones. As an ideal operational platform, drones possess flexible mobility, enabling them to quickly and efficiently drop supplies in locations inaccessible by other means of transport, without being limited by geographical conditions or land transportation obstacles. Therefore, the application of drones for dropping and hoisting supplies is becoming increasingly widespread in both military and civilian fields. Existing patents disclose the following technologies: Patent publication number CN115593631A, entitled "A Dual-Redundant UAV Lifting and Deployment Device and Its Working Method," discloses the following: The deployment device includes a hook box assembly, which comprises a box body and a hook, a force transmission crank arm, and a cam rotatably mounted on the box body. Both the normal deployment component and the emergency deployment component control the movement of the cam. The cam controls the swing of the drive end of the force transmission crank arm, and the action end of the force transmission crank arm engages with the limiting end of the hook. The working method employs the aforementioned dual-redundant UAV lifting and deployment device, including a locked state, normal deployment, and emergency deployment. The beneficial effects of this invention are: it can achieve multiple modes of cargo deployment from UAVs; it can achieve precise deployment through ground control; it can achieve autonomous identification and deployment without human intervention; it has low operating torque and large load capacity; it has emergency safety control measures, resulting in higher reliability in mission completion.

[0003] The patent with publication number CN116755473A, entitled "A Method for Planning Airdrop Missions of a Wing-mounted Transport UAV," discloses the following: It relates to the field of UAV mission planning, including: first, determining the type of pod and pylon for the mission based on the UAV's wing-mounted carrying capacity, and distinguishing between the UAV's departure and return configurations based on the number of pods and the loaded weight; then calculating the maximum takeoff weight and maximum takeoff refueling amount that simultaneously prevent the UAV from overrunning the runway during takeoff and from hitting obstacles in the takeoff airspace; next, calculating the minimum takeoff refueling amount based on the mission radius and operational route distance, considering reserve fuel; and calculating the maximum flight weight, climb fuel consumption, and maximum takeoff refueling amount corresponding to the minimum cruising altitude; finally, analyzing the feasibility of the mission based on the above weight data and determining the range of takeoff refueling amounts. This invention provides data support for the implementation of pod delivery missions while ensuring UAV flight safety.

[0004] The above technologies and existing drones still have certain problems in terms of deployment safety and parachute / object separation after landing. Summary of the Invention

[0005] The purpose of this invention is to solve the technical problem of parachutes and cargo detaching in the air due to changes in force after airdropped cargo leaves the cabin. This invention provides a delayed automatic separation device and its automatic unlocking method.

[0006] To achieve the above objectives, the present invention specifically adopts the following technical solution: One aspect of the present invention provides a time-delayed automatic separation device, including an upper hanging ring, a hook assembly, a time-delay assembly, an unlocking assembly, and a lower hanging ring; the upper hanging ring is hooked onto a hooking hole above the hook assembly, the lower hanging ring is hooked onto an arc-shaped hook of the hook assembly, the upper hanging ring is connected to an airdrop umbrella, and the lower hanging ring is connected to the airdropped item; The hook assembly is mainly used to bear the load when the airdropped object descends. The hook assembly has an internal space for the installation and housing of the delay component and the unlocking component. The delay component is located in the middle of the unlocking component and is used to delay the unlocking mechanism to prevent it from disengaging in mid-air.

[0007] In one embodiment, the hook assembly includes a symmetrically arranged left hook and a right hook, which are positioned by a first positioning pin and a second positioning pin and locked together by a bolt assembly; the left hook and the right hook form an installation receiving space. The hook hole includes a first hook hole and a second hook hole respectively set at the corresponding heights of the left hook and the right hook, and the upper hanging ring passes through the first hook hole and the second hook hole; The arc-shaped hook includes a first semicircular groove and a second semicircular groove respectively disposed on the corresponding sides of the left hook and the right hook; The left hook and the right hook are respectively provided with a first groove and a second groove, which provide installation and accommodating space for the delay component and the unlocking component; The left hook has an arc-shaped groove and a cylindrical protrusion next to the second hook hole. The left hook has a zero mark, a scale mark and a rotation direction mark. Both the left and right hooks have a second and a fourth step.

[0008] In one embodiment, the delay assembly includes a delay unit, a delay knob, a delay unit trigger, a first spring, an axial snap ring, and a delay unit actuation arm. The delay knob is mounted on the delay unit by screws, and an indicator mark is provided on the delay knob; The timer trigger is vertically positioned, and the timer actuation arm is vertically movably inserted into the timer. The bottom of the timer actuation arm extends out of the timer and connects to the timer trigger. A first spring is sleeved on the timer actuation arm inside the timer, with one end fixed inside the timer. An axial retaining ring mounts the other end of the first spring onto the timer trigger. The first spring provides a rebound tendency for the timer trigger, preventing accidental triggering or vibration-induced activation of the timer. Figure 5 As shown.

[0009] Specifically, the delay knob is a device for manually setting the working time of the delay device. The delay device actuation arm provides a force to unlock the latch after the delay device has finished working.

[0010] In one embodiment, the unlocking assembly includes a first latch, a second shaft, a second torsion spring, a second spring sleeve, a second spring, a spring pin, a second latch, a third shaft, a trigger arm, a fourth shaft, a third torsion spring, a manual lever, a release arm, a first shaft, and a first torsion spring. The release arm is hinged to the left hook and the right hook via a first shaft. A first torsion spring is sleeved on the first shaft between the left hook and the right hook. The first torsion spring provides the release arm with a tendency for the lower lifting ring to disengage from the hook. The first locking tongue is equipped with a manual lever that passes through the arc-shaped groove on the left hook. The hooks can be manually locked via the manual locking assembly. The first locking tongue is hinged to the left and right hooks via a second shaft. A second torsion spring is sleeved on the second shaft between the second shaft and the right hook. The first locking tongue is propelled by the second torsion spring to rotate clockwise along the second shaft and retract into the hooks, thus unlocking the release arm. Figure 4 As shown.

[0011] In one embodiment, the second latch is hinged to the left and right hooks via a third axis. A spring pin is provided between the second latch and the left hook. The spring pin is installed in a cylindrical protrusion on the left hook via a second spring sleeve. A second spring is disposed between the spring pin and the second spring sleeve. The spring pin provides a tendency for the second latch to rotate counterclockwise around the third axis. The second latch cooperates with the delay actuation arm to provide a tendency for the delay actuation arm to retract and reset.

[0012] In one embodiment, the trigger arm is hinged to the left and right hooks via a fourth axis, and a third torsion spring is sleeved on the fourth axis between the fourth axis and the right hook. The third torsion spring provides a tendency for the trigger arm to rotate counterclockwise about the fourth axis, and provides a tendency for the trigger arm to leave the delay trigger when the separation arm is not in contact with the trigger arm.

[0013] In one embodiment, the left hook and the right hook are each provided with a first limiting protrusion and a second limiting protrusion. The separation arm is provided with a reinforcing edge, which, together with the first limiting protrusion and the second limiting protrusion, forms an annular hole to ensure that the lower lifting ring will not automatically detach under abnormal working conditions. The reinforcing edge has a guiding function, which can provide a tendency for the separation arm to move towards the trigger arm when under the tension of the lower lifting ring, so that the separation arm accurately triggers the trigger arm to start the delay timer. The left hook and the right hook are each provided with a first step and a third step to provide a receiving space for the separation arm when it is under the tension of the lower lifting ring.

[0014] Specifically, the delay device is equipped with a trigger delay and a pause delay if not triggered. The pause delay is achieved by resetting the delay device trigger with the first spring, so that the delay device is in an untriggered state. The delay device is activated by the trigger arm. If the trigger arm is not triggered by the action of the separation arm, the delay is paused. After the airdropped parachute and the object are in a stable state, the lower lifting ring will cause the separation arm to touch the trigger arm under the action of gravity. The trigger arm will then trigger the delay device, which can prevent false locking caused by vibration or irregular movement of the airdropped object in the air. When the delay device is working properly, the indicator mark on the delay knob aligns with the zero mark on the left hook, indicating the end of the delay. The delay device actuates the arm, causing the second latch to rotate clockwise around the third axis, thus removing the restriction on the first latch. The second torsion spring provides the first latch with a tendency to rotate clockwise around the second axis, and the first latch retracts into the hook's receiving space. At this time, the separation arm is in the unlocked state. After the airdrop lands, the first torsion spring causes the separation arm to rotate clockwise around the first axis, separating the lower lifting ring from the hook assembly.

[0015] Another aspect of the present invention provides an automatic unlocking method for a time-delayed automatic separation device, comprising the following steps using the aforementioned time-delayed automatic separation device: S1. Install the upper lifting ring before airdrop: Pass the upper lifting ring connected to the airdrop parachute through the attachment hole of the delayed automatic separation device; S2. Install the lower lifting ring connected to the airdropped supplies sling: Insert the lower lifting ring into the annular groove of the reinforcing edge on the separation arm, overcome the torque of the first torsion spring, and drive the separation arm to rotate around the first axis into the hook receiving space. Manually pull the manual lever down along the arc-shaped slide to the end of the arc-shaped slide, remove the force applied to the lower lifting ring, and let the first torsion spring cause the separation arm to rotate clockwise around the first axis. The first locking tongue will restrict the clockwise rotation of the separation arm. Turn the delay knob to the set time to complete the installation of the lower lifting ring. S3. Delayed Unlocking Process During Airdrop Movement: After the airdropped cargo and parachute exit the cabin, the impact of the parachute overload will cause the hook to load or vibrate. Due to changes in force, irregular movement will occur between the hook and the lifting ring. The lower lifting ring, guided by the reinforcing edge on the separation arm, will pull the separation arm into the receiving space set on the hook within the annular groove formed by the reinforcing edge. At the same time, the separation arm will trigger the trigger arm, which in turn triggers the delay timer. The delay timer will start working. The hook will remain in the unlocked state until the delay timer finishes working. If the airdropped parachute or airdropped cargo undergoes irregular movement in the air, causing the lower lifting ring to detach from the half-locking space set on the hook, the hook will be unlocked. The circular groove, when the release arm is activated, simultaneously removes the force of the trigger arm. Under the action of the third torsion spring, the trigger arm rotates counterclockwise around the fourth axis. At the same time, the trigger arm removes its contact with the delay trigger. The delay trigger resets under the action of the first spring, pausing the delay. The delay knob stops rotating. When the trigger arm is touched again by the release arm, it triggers the delay trigger, and the delay works. When the indicator mark on the delay knob aligns with the zero mark on the left hook, the delay arm drives the second latch to rotate around the third axis, removing the restriction on the first latch. Under the action of the second torsion spring, the first latch rotates clockwise around the second axis and retracts, completing the unlocking. S4. Landing and Separation Process: When the airdrop parachute lands with the airdropped supplies, and the tension acting on the upper lifting ring, separation arm, and lower lifting ring is zero, the separation arm, under the action of the first torsion spring, rotates clockwise around the first axis, separating the lower lifting ring from the hook, thus achieving automatic separation.

[0016] Specifically, in the initial state: the hook is locked, the release arm is not under the tension of the upper and lower lifting rings, the timer is set with the delay time and is in the ready-to-trigger state.

[0017] Delayed state: When the airdropped cargo leaves the cabin, the hook retracts the upper and lower lifting rings into tension. The lower lifting ring drives the separation arm to trigger the arm, which in turn triggers the delay device. The delay device then begins to operate according to the set delay.

[0018] Unlocked state: The delay timer is set to delay until the actuation time. The delay timer actuation arm pushes the second locking tongue. The second locking tongue rotates around the second axis due to the action of the delay timer, removing the restriction of the first locking tongue on the second locking tongue. The first locking tongue is provided by the second torsion spring to rotate clockwise along the second axis and retract into the hook, so that the separation arm is in the unlocked state. When the airdrop lands, the first torsion spring provides the separation arm with the tendency for the lower lifting ring to disengage from the hook.

[0019] The beneficial effects of this invention are as follows: 1. This invention is ingeniously designed and has a stable and reliable structure. Whether it is airdropping from high altitude or separating upon landing, it can ensure the safety of cargo in the air and the safety of separation upon landing, thereby improving the efficiency and safety of airdropping.

[0020] 2. It can separate the parachute and cargo after the drone airdropped the goods upon landing; it can achieve autonomous separation without human intervention; it has air anti-misinterlock measures, making the mission more reliable. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] Figure 2 This is one of the structural cross-sectional views of the present invention.

[0024] Figure 3 This is the second structural cross-sectional view of the present invention.

[0025] Figure 4 This is a structural schematic diagram of the hook assembly and unlocking assembly of the present invention.

[0026] Figure 5 This is a schematic diagram of the delay component structure of the present invention.

[0027] Figure 6 This is a schematic diagram showing the installation position of the internal components of the hook of the present invention.

[0028] Figure 7 This is a schematic diagram of the initial state, delayed state, and unlocked state of the present invention.

[0029] Figure 8 This is a schematic diagram of the present invention for mounting heavy objects.

[0030] Figure 9 This is a schematic diagram of the state after the separation is completed according to the present invention.

[0031] Figure 10 This is a schematic diagram of the working position relationship of the present invention.

[0032] Attached reference numerals: 01, upper lifting ring; 02, upper lifting strap; 03, airdrop parachute; 05, first mounting hole; 06, second mounting hole; 07, first groove; 08, second groove; 10. Right hook; 20. Left hook; 30. Separation arm; 40. Delay knob; 50. First locking tongue; 70. Lower lifting ring; 11. First limiting protrusion; 12. First semi-circular groove; 13. First step; 14. Second step; 15. First positioning pin; 16. Second positioning pin; 17. First bolt; 18. Second bolt; 19. Third bolt; 21. Second limiting protrusion; 22. Cylindrical protrusion; 23. Arc-shaped groove; 24. Zero position mark; 25. Scale mark; 26. Rotation direction mark; 27. Second semi-circular groove; 28. Third step; 29. ​​Fourth step; 31. First shaft; 32. 33. First torsion spring; 44. Reinforcing edge; 45. Indicator mark; 46. Screw; 47. Delay device; 48. First spring; 49. Axial snap ring; 40. Delay device trigger; 41. Delay device actuation arm; 52. Second torsion spring; 53. Second spring sleeve; 54. Second spring; 55. Spring pin; 56. Second locking tongue; 57. Third shaft; 58. Trigger arm; 59. Fourth shaft; 60. Third torsion spring; 61. Manual lever; 71. Lower sling; 80. Dropped item. Detailed Implementation

[0033] To make the technical problems, technical solutions, and technical effects of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0035] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0037] Example 1 like Figures 1 to 10 As shown, this embodiment provides a time-delayed automatic separation device, including an upper hanging ring 01, a hook assembly, a time-delay assembly, an unlocking assembly, and a lower hanging ring 70; the upper hanging ring 01 is hooked onto the hook hole above the hook assembly, the lower hanging ring 70 is hooked onto the arc-shaped hook of the hook assembly, the upper hanging ring 01 is connected to the airdrop umbrella, and the lower hanging ring 70 is connected to the airdropped item 80; The hook assembly is mainly used to bear the load when the airdropped object 80 descends, and the hook assembly is provided with an installation and housing space for the delay component and the unlocking component. The delay component is located in the middle of the unlocking component and is used to delay the unlocking mechanism to prevent it from detaching in mid-air.

[0038] Example 2 This embodiment is a further optimization based on Embodiment 1, specifically: The hook assembly includes a symmetrically arranged left hook 20 and a right hook 10, which are positioned by a first positioning pin 15 and a second positioning pin 16 and locked together by a bolt assembly; the left hook 20 and the right hook 10 form an installation and receiving space. The hook hole includes a first hook hole 05 and a second hook hole 06 respectively set at the corresponding heights of the left hook 20 and the right hook 10, and the upper hanging ring 01 passes through the first hook hole 05 and the second hook hole 06. The arc-shaped hook includes a first semi-circular groove 12 and a second semi-circular groove 27 respectively disposed on the corresponding sides of the left hook 20 and the right hook 10; The left hook 20 and the right hook 10 are respectively provided with a first groove 07 and a second groove 08, and the first groove 07 and the second groove 08 provide installation and accommodating space for the delay component and the unlocking component. The left hook 20 is provided with an arc-shaped groove 23 and a cylindrical protrusion 22 next to the second hook hole 06. The left hook 20 is provided with a zero position mark 24, a scale mark 25 and a rotation direction mark 26. Both the left hook 20 and the right hook 10 are provided with a second step 14 and a fourth step 29.

[0039] Example 3 This embodiment is a further optimization based on embodiment 2, specifically: The delay assembly includes a delay unit 43, a delay knob 40, a delay unit trigger 46, a first spring 44, an axial retaining ring 45, and a delay unit actuation arm 47. The delay knob 40 is mounted on the delay unit 43 by screws 42, and an indicator mark 41 is provided on the delay knob 40; The trigger 46 is vertically positioned, and the delay actuation arm 47 is vertically movably inserted into the delay unit 43. The bottom of the delay actuation arm 47 extends out of the delay unit 43 and connects to the delay trigger 46. The first spring 44 is sleeved on the delay actuation arm 47 inside the delay unit 43. One end of the first spring 44 is fixed inside the delay unit 43, and the axial retaining ring 45 mounts the other end of the first spring 44 onto the delay trigger 46. The first spring 44 provides a rebound tendency for the delay trigger 46, preventing accidental triggering or vibration-triggered activation of the delay unit 43. Figure 5 As shown.

[0040] Specifically, the delay knob is a device for manually setting the working time of the delay device. The delay device actuation arm 47 provides a force for unlocking the latch after the delay device 43 has finished working.

[0041] Example 4 This embodiment is a further optimization based on embodiment 2, specifically: The unlocking assembly includes a first locking tongue 50, a second shaft 51, a second torsion spring 52, a second spring sleeve 53, a second spring 54, a spring pin 55, a second locking tongue 56, a third shaft 57, a trigger arm 58, a fourth shaft 59, a third torsion spring 60, a manual lever 61, a release arm 30, a first shaft 31, and a first torsion spring 32. The detachable support arm 30 is hinged to the left hook 20 and the right hook 10 via the first shaft 31. The first torsion spring 32 is sleeved on the first shaft 31 between the left hook 20 and the right hook 10. The first torsion spring 32 provides the detachable support arm 30 with a tendency for the lower lifting ring 70 to disengage from the hook. The first locking tongue 50 is provided with a manual lever 61 passing through the arc-shaped groove 23 on the left hook 20, allowing the hook to be manually locked via a manual locking assembly. The first locking tongue 50 is hinged to the left hook 20 and the right hook 10 via a second shaft 51. A second torsion spring 52 is sleeved on the second shaft 51 between the second shaft 51 and the right hook 10. The first locking tongue 50 is provided by the second torsion spring 52 to rotate clockwise along the second shaft 51 and retract into the hook, so that the separating support arm 30 is in the unlocked state. Figure 4 As shown.

[0042] The second locking tongue 56 is hinged to the left hook 20 and the right hook 10 via the third shaft 57. A spring pin 55 is provided between the second locking tongue 56 and the left hook 20. The spring pin 55 is installed in the cylindrical protrusion 22 on the left hook 20 via the second spring sleeve 53. The second spring 54 is disposed between the spring pin 55 and the second spring sleeve 53. The spring pin 55 provides a tendency for the second locking tongue 56 to rotate counterclockwise around the third shaft 57. The second locking tongue 56 cooperates with the delay actuation arm 47, providing a tendency for the delay actuation arm 47 to retract and reset.

[0043] The trigger arm 58 is hinged to the left hook 20 and the right hook 10 via the fourth shaft 59. The third torsion spring 60 is sleeved on the fourth shaft 59 between the fourth shaft 59 and the right hook 10. The third torsion spring 60 provides the trigger arm 58 with a tendency to rotate counterclockwise around the fourth shaft 59 and provides a tendency for the trigger arm 58 to leave the delay trigger 46 when the separation arm 30 is not in contact with the trigger arm 58.

[0044] Example 5 This embodiment is a further optimization based on embodiment 4, specifically: The left hook 20 and the right hook 10 are each provided with a first limiting protrusion 11 and a second limiting protrusion 21. The separating arm 30 is provided with a reinforcing edge 33. The reinforcing edge 33, the first limiting protrusion 11 and the second limiting protrusion 21 form an annular hole to ensure that the lower lifting ring 70 will not automatically detach in an abnormal working state. The reinforcing edge 33 has a guiding function, which can provide the separating arm 30 with a tendency to move towards the trigger arm 58 when it is under the tension of the lower lifting ring 70, so that the separating arm 30 accurately touches the trigger arm 58 to start the delay. The left hook 20 and the right hook 10 are each provided with a first step 13 and a third step 28 to provide a receiving space for the separating arm 30 when it is under the tension of the lower lifting ring 70.

[0045] Specifically, the basic principle is as follows: an upper lifting ring 01, a lower lifting ring 70, and a time-delay separation device are added between the slings connecting the airdrop parachute and the supplies. The time-delay separation device is attached between the upper lifting ring 01 and the lower lifting ring 70 and has an automatic trigger delay unlocking function.

[0046] Working principle of the delay unit: The delay unit is a finished product, consisting of a delay trigger and a delay actuator. After the mainspring is wound, the trigger is activated to start working. When the set time is reached, the delay actuator arm extends to provide a force.

[0047] Hook unlocking principle: The release arm on the hook is pulled by the lower ring, causing the release arm to trigger the trigger arm. The trigger arm then activates the delay timer. When the delay timer finishes, it provides a force on the second latch, causing the second latch to rotate clockwise. This removes the second latch's restriction on the clockwise rotation of the first latch, causing the first latch to retract into the hook. The first torsion spring then allows the release arm to rotate clockwise around the first axis, meaning the hook is in the unlocked state.

[0048] The delay device 43 is equipped with a trigger delay and a pause delay if not triggered. The pause delay is achieved by resetting the delay device trigger 46 through the first spring 44, so that the delay device 43 is in an untriggered state. The delay device 43 is activated by the trigger arm 58. If the trigger arm 58 is not triggered by the action of the separation arm 30, the pause delay occurs. After the airdropped parachute and the object are in a stable state, the lower lifting ring 70 causes the separation arm 30 to touch the trigger arm 58 under the action of gravity. The trigger arm 58 then triggers the delay device 43, which can prevent false locking caused by vibration or irregular movement of the airdropped object in the air. When the delay device 43 is working normally, the indicator mark 41 on the delay knob 40 is aligned with the zero mark 24 on the left hook 20, indicating the end of the delay. The delay device actuation arm 47 moves to make the second locking tongue 56 rotate clockwise around the third axis 57, thus removing the restriction on the first locking tongue 50. The second torsion spring 52 provides the first locking tongue 50 with a tendency to rotate clockwise around the second axis 51. The first locking tongue 50 retracts into the receiving space of the hook. At this time, the separation arm 30 is in the unlocked state. After the airdrop lands, the first torsion spring 32 makes the separation arm 30 rotate clockwise around the first axis 31 to separate the lower lifting ring 70 from the hook assembly.

[0049] Example 6 This embodiment provides an automatic unlocking method for a time-delay automatic separation device, including the following steps: S1. Install the upper hanging ring 01 before airdrop: Pass the upper hanging ring 01, which is connected to the airdrop parachute 03, through the hook hole of the delayed automatic separation device. S2. Install the lower lifting ring 70 connected to the airdropped supplies sling: Insert the lower lifting ring 70 into the annular groove of the reinforcing edge 33 of the separation arm 30, overcome the torque of the first torsion spring 32 to drive the separation arm 30 to rotate around the first axis 31 into the hook receiving space, manually pull the manual lever 61 down along the arc-shaped slide 23 to the end of the arc-shaped slide, remove the force applied to the lower lifting ring 70, and let the first torsion spring 32 cause the separation arm 30 to rotate clockwise around the first axis 31. The first locking tongue 50 will restrict the clockwise rotation of the separation arm 30. Turn the delay knob 40 to the set time to complete the installation of the lower lifting ring 70. S3. Delayed Unlocking Process During Airdrop Movement: After the airdropped item and parachute exit the cabin, the impact of the parachute overload will cause the hook to load or vibrate. Due to the change in force, irregular movement will occur between the hook and the lifting ring. The lower lifting ring 70, within the annular groove formed by the reinforcing edge 33 on the separation arm 30, will be guided by the reinforcing edge 33 to pull the separation arm 30 into the receiving space provided on the hook. At the same time, the separation arm 30 will trigger the trigger arm 58, which in turn triggers the delay trigger 46. The delay timer 43 will start working. Before the delay timer 43 finishes working, the hook will be in an unlocked state. If the airdropped parachute 03 and the airdropped item 80 experience irregular movement in the air, causing the lower lifting ring 70 to disengage from the semi-circular groove provided on the hook, the separation arm 30 will... When the force of the trigger arm 58 is removed, the trigger arm 58 rotates counterclockwise around the fourth axis 59 under the action of the third torsion spring 60. At the same time, the trigger arm 58 removes the contact with the delay trigger 46. The delay trigger 46 is reset under the action of the first spring 44, pausing the delay. The delay knob 40 stops rotating. When the trigger arm 58 is touched again by the separation arm 30, the delay trigger 46 is triggered, and the delay 43 is activated. When the indicator mark 41 on the delay knob is aligned with the zero mark 24 on the left hook 20, the delay actuation arm 47 drives the second locking tongue 56 to rotate around the third axis 57 to remove the restriction on the first locking tongue 50. Under the action of the second torsion spring 52, the first locking tongue 50 rotates clockwise around the second axis 51 and retracts, completing the unlocking. S4. Landing and Separation Process: When the airdrop parachute 03 lands with the airdropped supplies, and the tension acting on the upper lifting ring 01, the separation arm 30, and the lower lifting ring 70 is zero, the separation arm 30 rotates clockwise around the first axis 31 under the force of the first torsion spring 32, separating the lower lifting ring 70 from the hook, thus achieving automatic separation.

[0050] Specifically, in the initial state: the hook is locked, the release arm is not under the tension of the upper and lower lifting rings, the timer is set with the delay time and is in the ready-to-trigger state.

[0051] Delayed state: When the airdropped cargo leaves the cabin, the hook retracts the upper and lower lifting rings into tension. The lower lifting ring drives the separation arm to trigger the arm, which in turn triggers the delay device. The delay device then begins to operate according to the set delay.

[0052] Unlocked state: The delay timer is set to delay until the actuation time. The delay timer actuation arm pushes the second locking tongue. The second locking tongue rotates around the second axis due to the action of the delay timer, removing the restriction of the first locking tongue on the second locking tongue. The first locking tongue is provided by the second torsion spring to rotate clockwise along the second axis and retract into the hook, so that the separation arm is in the unlocked state. When the airdrop lands, the first torsion spring provides the separation arm with the tendency for the lower lifting ring to disengage from the hook.

Claims

1. A time delay automatic disengagement device characterized by: Including the upper ring (01), the hook assembly, the delay assembly, the unlocking assembly and the lower ring (70); The upper ring (01) is hung on the hanging hole above the hook assembly, the lower ring (70) is hung on the arc-shaped hook of the hook assembly, the upper ring (01) is connected with the air drop parachute, and the lower ring (70) is connected with the air drop object (80); The hook assembly is mainly used for bearing the load when the air drop object (80) descends, and a mounting and containing space for the delay assembly and the unlocking assembly is arranged in the hook assembly, the delay assembly is arranged between the unlocking assembly, and the delay assembly is used for delaying the unlocking mechanism and preventing air unlocking.

2. A time delay automatic release device according to claim 1, wherein: The hook assembly comprises the left hook (20) and the right hook (10) which are symmetrically arranged, the left hook (20) and the right hook (10) are positioned by the first positioning pin (15) and the second positioning pin (16) and are locked by the bolt assembly, and the left hook (20) and the right hook (10) enclose the mounting and containing space; The hanging hole comprises the first hanging hole (05) and the second hanging hole (06) which are arranged at corresponding heights of the left hook (20) and the right hook (10) respectively, and the upper ring (01) passes through the first hanging hole (05) and the second hanging hole (06); The arc-shaped hook comprises the first semicircular groove (12) and the second semicircular groove (27) which are arranged at corresponding sides of the left hook (20) and the right hook (10) respectively; The first recess (07) and the second recess (08) are arranged on the left hook (20) and the right hook (10) respectively, and the first recess (07) and the second recess (08) provide the mounting and containing space for the delay assembly and the unlocking assembly; The second hanging hole (06) of the left hook (20) is provided with the arc-shaped sliding groove (23) and the cylindrical protrusion (22), the left hook (20) is provided with the zero mark (24), the scale mark (25) and the rotation direction mark (26); The second step (14) and the fourth step (29) are arranged in the left hook (20) and the right hook (10).

3. A time delay automatic release device according to claim 2, wherein: The delay assembly comprises a delay timer (43), a delay knob (40), a delay timer trigger (46), a first spring (44), an axial clamping spring (45) and a delay timer actuating arm (47); The delay knob (40) is mounted on the delay timer (43) through a screw (42), and the delay knob (40) is provided with an indication mark (41). The delay trigger (46) is vertically arranged, the delay actuator arm (47) is vertically movably inserted into the delay timer (43), the bottom of the delay actuator arm (47) extends out of the delay timer (43) and is connected with the delay trigger (46), the first spring (44) is sleeved on the delay actuator arm (47) inside the delay timer (43), one end of the first spring (44) is fixed in the delay timer (43), the other end of the first spring (44) is installed on the delay trigger (46) by the axial clasp spring (45), the first spring (44) provides a rebounding tendency for the delay trigger (46), and the delay timer (43) is prevented from being triggered by mistake or vibration.

4. A time delay automatic release device according to claim 3, wherein: The unlocking assembly comprises a first lock tongue (50), a second shaft (51), a second torsion spring (52), a second spring sleeve (53), a second spring (54), a spring pin (55), a second lock tongue (56), a third shaft (57), a trigger arm (58), a fourth shaft (59), a third torsion spring (60), a manual lever (61), a separation arm (30), a first shaft (31), and a first torsion spring (32). The separation arm (30) is hinged to the left hook (20) and the right hook (10) through the first shaft (31), and the first torsion spring (32) is sleeved on the first shaft (31) between the left hook (20) and the right hook (10) and provides a tendency for the separation arm (30) to separate the lower lifting ring (70) from the hook. The first lock tongue (50) is provided with a manual lever (61) penetrating through an arc-shaped sliding groove (23) on the left hook (20), the hook can be manually locked by manually locking the assembly, the first lock tongue (50) is hinged to the left hook (20) and the right hook (10) through the second shaft (51), the second torsion spring (52) is sleeved on the second shaft (51) between the second shaft (51) and the right hook (10), and the first lock tongue (50) is provided with a tendency to rotate clockwise along the second shaft (51) and retract into the hook by the second torsion spring (52), so that the separation arm (30) is in an unlocked state.

5. A time delay automatic release device according to claim 4, wherein: The second lock tongue (56) is hinged to the left hook (20) and the right hook (10) through the third shaft (57), the second lock tongue (56) is provided with a spring pin (55) between the left hook (20), the spring pin (55) is installed in a cylindrical protrusion (22) on the left hook (20) through the second spring sleeve (53), the second spring (54) is arranged between the spring pin (55) and the second spring sleeve (53), the spring pin (55) provides a tendency for the second lock tongue (56) to rotate counterclockwise around the third shaft (57), and the second lock tongue (56) cooperates with the delay actuator arm (47) to provide a tendency for the delay actuator arm (47) to retract and reset.

6. A time delay automatic release device according to claim 5, wherein: The trigger branch (58) is hinged on the left hook (20) and the right hook (10) through the fourth shaft (59), the third torsional spring (60) is sleeved on the fourth shaft (59) between the fourth shaft (59) and the right hook (10), the third torsional spring (60) provides a tendency for the trigger branch (58) to rotate counterclockwise around the fourth shaft (59), and provides a tendency for the trigger branch (58) to move away from the delay timer trigger (46) when the separation branch (30) does not contact the trigger branch (58).

7. A time delay automatic release device according to claim 6, wherein: The left hook (20) and the right hook (10) are each provided with a first limiting protrusion (11) and a second limiting protrusion (21), the separation branch (30) is provided with a reinforcing edge (33), the reinforcing edge (33) and the first limiting protrusion (11) and the second limiting protrusion (21) form an annular hole, so that the lower lifting ring (70) cannot automatically separate in an abnormal working state, the reinforcing edge (33) has a guiding function and can provide a tendency for the separation branch (30) to move towards the trigger branch (58) under the tension of the lower lifting ring (70), so that the separation branch (30) accurately triggers the trigger branch (58) to start the delay timer, and the left hook (20) and the right hook (10) are each provided with a first step (13) and a third step (28) for providing a receiving space for the separation branch (30) under the tension of the lower lifting ring (70).

8. An automatic unlocking method of a time-delay automatic separation device, characterized by An automatic separation device is used according to any one of claims 1 to 9.

9. An automatic unlocking method of a time-delay automatic separation device, characterized by, The method comprises the following steps: S1, installing the upper lifting ring (01) before air dropping: the upper lifting ring (01) connected with the air dropping parachute (03) is passed through the hooking hole of the automatic separation device; S2, installing the lower lifting ring (70) connected with the air dropping material lifting belt: the lower lifting ring (70) is clamped into the annular groove of the reinforcing edge (33) of the separation branch (30), the separation branch (30) is driven to rotate around the first shaft (31) into the hook receiving space by overcoming the torsional force of the first torsional spring (32), the manual lever (61) is manually pulled downward along the arc-shaped sliding groove (23) to the end of the arc-shaped sliding groove, the force applied to the lower lifting ring (70) is removed, the separation branch (30) is rotated clockwise around the first shaft (31) by the first torsional spring (32), the first locking tongue (50) limits the clockwise rotation of the separation branch (30), the delay knob (40) is twisted to a set time, and the installation of the lower lifting ring (70) is completed. S3, the air drop motion delay unlocking process: when the air drop object and the parachute are out of the cabin, the impact of the opening parachute overload will cause the hook to load or vibrate, and the irregular motion will occur between the hook and the hanging ring due to the change of the acting force. The lower hanging ring (70) will pull the separation arm (30) into the accommodation space provided on the hook under the guidance of the reinforcing edge (33) in the annular groove on the separation arm (30), and at the same time, the separation arm (30) will trigger the trigger arm (58), the trigger arm (58) will trigger the delay timer trigger (46), and the delay timer (43) will start to work. Before the delay timer (43) works, the hook is in an unlocked state. If the air drop parachute (03) and the air drop object (80) appear irregular motion in the air, the lower hanging ring (70) will be separated from the semicircular groove provided on the hook, and the separation arm (30) will also remove the force of the trigger arm (58). The trigger arm (58) will rotate counterclockwise around the fourth shaft (59) under the action of the third torsional spring (60), and the trigger arm (58) will also remove the touch of the delay timer trigger (46). The delay timer trigger (46) is reset under the action of the first spring (44), the delay is paused, the delay knob (40) is paused, and the delay timer trigger (46) is touched when the trigger arm (58) is touched by the separation arm (30) again. The delay timer (43) works, and when the indicator (41) on the delay knob is aligned with the zero mark (24) on the left hook (20), the second lock tongue (56) rotates around the third shaft (57) to remove the restriction on the first lock tongue (50), and the first lock tongue (50) rotates clockwise around the second shaft (51) under the action of the second torsional spring (52). Retracted, the unlocking is completed. S4, the landing separation process: when the air drop parachute (03) lands with the air drop supplies, the tension on the upper hanging ring (01), the separation arm (30) and the lower hanging ring (70) is zero, the separation arm (30) rotates clockwise around the first shaft (31) under the action of the first torsional spring (32), the lower hanging ring (70) is separated from the hook, and the automatic separation is realized.

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