An airborne delivery device

Abstract

The utility model provides a kind of airborne delivery device, it is related to unmanned aerial vehicle grenade delivery technical field, solve the problem that the launching force is too large in prior art influence unmanned aerial vehicle flight attitude leads to the problem of reduced delivery accuracy, the device includes hanging machine unit, steering wheel unit and transmission unit, grenade is located on the hanging machine shell of hanging machine unit and is loaded by the limiting of grenade fixed column and grenade release assembly to iron buckle reverse buckle binding, gear drive chain in steering wheel unit moves first and pulls out grenade safety pin, the other end is moved by release pin driven by transmission unit to realize grenade delivery, this delivery device can execute 2 kinds of mode, " pull out and release immediately " and " pull out first and release later " mode, " pull out and release immediately " mode indicates that control unit receives one instruction execution pull out grenade safety pin and then release grenade, " pull out first and release later " instruction indicates that control unit receives instruction pull out grenade safety pin first, then receives instruction release grenade, improve the timeliness and security of grenade delivery.

Description

Technical Field

[0001] This utility model relates to the field of drone delivery technology, specifically to an airborne delivery device. Background Technology

[0002] With the popularization of drone technology, drones have been gradually applied to various fields, including military and civilian technologies. For example, grenades can be mounted on drones using a delivery device, and the drone can then drop the grenades at a designated location, allowing them to bombard targets. The delivery device can also be used for civilian applications such as the delivery of fire extinguishing grenades.

[0003] Existing drone bombing devices can transmit control signals from the flight controller to the servo motor when the drone arrives at the mission area. The servo motor then pulls out the metal pin, and at the same time, the pawl opens under the action of the compression spring, causing the bomb to fall automatically. For example, Chinese utility model patent CN220842956U discloses a grenade launching device for unmanned aerial vehicles (UAVs). This device includes an ejection system, a pressure cap, and a release system. The ejection system includes a spring and a pad, which are located in a grenade slot. The grenade is installed in the grenade slot, and the spring is compressed when the pressure cap is used. The release system includes a linkage mechanism and a limiting pin. The linkage mechanism includes a pressure cap limiting rod, a pull rod, and a drive rod. The pressure cap limiting rod presses the pressure cap tightly. The pull rod is rotatably connected to the drive rod through the limiting pin. The drive rod is connected to the drive shaft of the servo motor. The limiting pin passes through the safety pin of the grenade. When the servo motor operates, it drives the drive rod to move, which in turn moves the limiting pin to pull out the safety pin. At the same time, the drive rod and the pull rod drive the pressure cap limiting rod away from the pressure cap, and the spring ejects the grenade by its elastic force, thus completing the grenade launching operation.

[0004] Although the aforementioned grenade delivery device can complete the delivery operation, there are still some problems in its use. When the drone delivers grenades in flight, the device delivers the grenades by launching them. The grenade launch force is relatively large, and the excessive force can easily affect the drone's flight attitude, thus reducing the accuracy of the grenade delivery.

[0005] Therefore, this utility model provides an airborne delivery device that avoids launching grenades in a catapult-like manner to ensure the accuracy of the grenade hitting the target. Utility Model Content

[0006] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of this section, the abstract, and the title of this invention, and such simplifications or omissions shall not be used to limit the scope of this utility model.

[0007] To address the technical problem of reduced accuracy in hitting targets caused by ricocheting grenades in existing technologies, this utility model adopts the following technical solution.

[0008] An airborne delivery device includes a mounting unit, a servo unit, and a transmission unit. The mounting unit includes a mounting shell, which is mounted on a UAV. The mounting shell has a grenade loading area, a grenade fixing post, and a grenade release assembly. The grenade is secured in the grenade loading area by a reverse-fastening cable tie. One end of the reverse-fastening cable tie is fitted onto the grenade fixing post, and the other end is fitted onto the grenade release assembly. The servo unit operates to drive the grenade release assembly through the transmission unit to release the restriction on the reverse-fastening cable tie, thereby releasing the grenade.

[0009] Preferably, in the above-mentioned automatic grenade delivery device, the grenade release assembly includes a fixed cylinder, a release pin, and a fixed ring. The release pin is slidably mounted on the fixed cylinder, and one end of the iron buckle is sleeved on the grenade fixing post, while the other end is sleeved on the release pin. The release pin is inserted into the fixed ring to limit the iron buckle. The servo unit operates by driving the release pin towards the fixed cylinder through the transmission unit, disengaging it from the fixed ring and thus from the iron buckle, thereby releasing the limitation on the iron buckle.

[0010] Preferably, in the above-mentioned automatic grenade delivery device, the servo unit includes a chain slide rail housing, a servo motor, a gear, and a chain. The servo motor is installed in the hanger housing and controlled by the central control unit in the hanger housing. The output end of the servo motor is connected to the gear. When the servo motor works, it drives the gear to rotate and move the chain within the chain slide rail housing. The chain movement first pulls out the grenade safety pin, and then the chain moves in the opposite direction, driving the release pin to move through the transmission unit to release the restriction on the iron buckle cable tie.

[0011] Preferably, in the above-mentioned automatic grenade delivery device, one end of the chain is the chain head, and the other end of the chain is the chain tail. The chain tail is connected to the grenade safety pin. When the servo motor drives the gear to rotate clockwise, the chain tail pulls out the grenade safety pin. When the servo motor drives the wheel to rotate counterclockwise, the chain head drives the release pin to move towards the fixed cylinder through the transmission unit to release the restriction on the iron buckle cable tie.

[0012] Preferably, in the above-mentioned automatic grenade delivery device, the transmission unit includes a slide rail mounting component and a slide rail. The slide rail is slidably mounted on the slide rail mounting component, and a guide cylinder and a fixed pulley are also installed on the mounting housing. A traction rope is connected to the slide rail, and the other end of the traction rope passes through the guide cylinder and the fixed pulley into the fixed cylinder and is connected to the release pin. When the gear rotates clockwise, the chain head enters the slide rail. When the gear rotates counterclockwise, the chain head first forms an S-shaped locking structure with the slide rail, and then drives the slide rail to move, which in turn drives the release pin to move and release the restriction on the iron buckle cable tie.

[0013] Preferably, in the above-mentioned automatic grenade delivery device, the S-shaped locking structure includes a hanging part set on the chain head and a locking part set on the slide rail. When the gear rotates clockwise, the hanging part on the chain head passes over the locking part. When the gear rotates counterclockwise, the hanging part and the locking part contact to form an S-shaped locking structure. The gear continues to rotate counterclockwise, which drives the slide rail to move along the length direction of the slide rail mounting part through the chain head. The slide rail drives the release pin to move and release the restriction on the iron buckle cable tie through the traction rope.

[0014] Preferably, in the above-mentioned automatic grenade launching device, the slide rail mounting component is connected to the mounting housing via a spring assembly. When the mounting component passes the locking component, the mounting component applies pressure to the locking component, causing the slide rail and the slide rail mounting component to compress the spring assembly, thereby moving the slide rail and the slide rail mounting component toward the mounting housing.

[0015] Preferably, in the above-mentioned automatic grenade delivery device, the grenade release assembly further includes a return spring. The return spring is installed in the fixed cylinder. When the slide rail drives the release pin to move towards the fixed cylinder, the release pin compresses the return spring, causing the return spring to store force.

[0016] Preferably, the above-mentioned automatic grenade delivery device further includes a release component, which releases the S-shaped locking structure formed between the slide rail and the chain head. After the S-shaped locking structure is released, the slide rail is reset by the elastic force of the return spring.

[0017] Preferably, in the above-mentioned automatic grenade delivery device, the release component includes a reset rocker plate. An opening is provided on the grenade housing. The reset rocker plate is mounted on the grenade housing by a torsion spring, and one end of the reset rocker plate extends through the opening to the outside of the grenade housing. When the grenade is delivered, the S-shaped locking structure drives the slide rail to move to the reset rocker plate. The reset rocker plate rotates and applies pressure to the end of the slide rail. The spring assembly on the slide rail mounting piece is compressed, and the slide rail and the slide rail mounting piece move toward one side of the grenade housing, releasing the S-shaped locking structure.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] The airborne grenade delivery device of this invention achieves the operation of removing the safety pin before delivery by automatically pulling out the safety pin of the grenade and releasing the grenade release assembly from the restriction of the iron buckle cable tie, thus ensuring the safety of grenade delivery. In addition, the delivery device utilizes the MG996R servo motor to provide more stable pulling force, improving the success rate of safety pin removal while avoiding the problem of excessive spring force affecting the flight attitude of the UAV. This improves the accuracy of target hit when delivering the grenade. Furthermore, the servo motor in this invention completes two actions through a wire-driven transmission unit. This invention involves removing the grenade safety pin and dropping the grenade, reducing overall weight and cost. Furthermore, the transmission unit simultaneously removes the safety pin and drops the grenade, eliminating the need for the operator to remove the safety pin before installation, thus reducing operator risk. The automatic grenade dropping device utilizes an S-shaped locking structure between the chain and the slide rail to move the release pin. After grenade dropping, the slide rail is reset via a reset rocker and a reset spring in the grenade release assembly, ensuring efficient grenade dropping while improving the device's effectiveness.

[0020] This invention addresses the limitation of current automatic grenade delivery devices for small multi-rotor drones, which only offer one delivery mode: the controller receives a single trigger signal, the safety pin removal mechanism removes the grenade's safety pin, and the grenade is immediately delivered. This invention offers two delivery modes: the first is "instant delivery," where the controller receives a single trigger signal, the safety pin is removed, and the grenade is delivered; the second is "delivery before delivery," where the controller receives two trigger signals, the safety pin is removed first, and the grenade is delivered second, thus improving both the timeliness and safety of grenade delivery. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the dispensing device in this utility model;

[0022] Figure 2 This is a schematic diagram of the bottom structure of the dispensing device in this utility model;

[0023] Figure 3 for Figure 1 A structural diagram from another perspective;

[0024] Figure 4 for Figure 1 The front view;

[0025] Figure 5 for Figure 1 A bottom view;

[0026] Figure 6 This is a schematic diagram showing the disassembled structure of the dispensing device and the chain slide rail housing in this utility model;

[0027] Figure 7 This is a schematic diagram of the transmission unit in this utility model;

[0028] Figure 8 This is a schematic diagram of the chain structure in this utility model;

[0029] Figure 9 This is a schematic diagram of the pre-deployment transmission unit of the hand grenade in this utility model;

[0030] Figure 10 This is a schematic diagram of the transmission unit in the grenade launching process of this utility model;

[0031] Figure 11 This is a schematic diagram of the transmission unit after the grenade is deployed in this utility model;

[0032] Figure 12 This is a schematic diagram of the grenade release assembly in this utility model.

[0033] The correspondence between the reference numerals and component names in the attached drawings is as follows.

[0034] 100. Hanging unit; 200. Servo unit; 300. Transmission unit;

[0035] 101. Hanging shell; 102. Grenade loading area; 103. Grenade fixing post; 104. Grenade release assembly; 105. Opening; 106. Reset rocker; 107. Display screen; 108. Mode switching switch; 109. Iron buckle reverse cable tie;

[0036] 201. Chain slide rail housing; 202. Chain; 203. Gear; 204. Safety pin;

[0037] 301. Slide rail mounting component; 302. Slide rail; 303. Guide cylinder; 304. Fixed pulley;

[0038] 104a, Fixed cylinder; 104b, Release pin; 104c, Fixed ring; 104d, Return spring;

[0039] 202a, Chain assembly; 202b, Chain head; 202c, Chain tail;

[0040] 301a, Spring assembly; 302a, Locking component;

[0041] 202b-1, Hanging ornament; 202c-1, Hook. Detailed Implementation

[0042] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0043] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0044] Example 1

[0045] like Figures 1-6 As shown, this is a structural schematic diagram of the automatic grenade delivery device in this embodiment. The airborne delivery device in this embodiment is mounted on a drone and carries grenades. The drone flies to the target area to complete the delivery of the grenades.

[0046] The airborne delivery device in this embodiment includes a mounting unit 100, which includes a mounting housing 101. The mounting housing 101 is mounted on the UAV to complete the loading of the delivery device and the UAV. In this embodiment, an ESP-32 development board serving as a central control unit is installed inside the mounting housing 101, and a servo unit 200 is provided at the bottom of the mounting unit 100. The ESP-32 development board controls the servo unit 200 to operate for delivering grenades.

[0047] like Figure 2 as well as Figure 5 As shown, in this embodiment, a grenade loading area 102 is provided on the surface of the hanger housing 101, and a grenade fixing post 103 is provided on one side of the grenade loading area 102. The grenade fixing post 103 is installed on the hanger housing 101, and as shown... Figure 1 As shown, a grenade release assembly 104 is also installed on the hang-up housing 101, such as... Figure 5 As shown, after the grenade is placed in the grenade loading area 102, it can be secured to the grenade loading area 102 by using the iron buckle and reverse cable tie 109 to fasten it to the grenade fixing post 103 and the grenade release assembly 104, thus completing the grenade loading.

[0048] In addition, such as Figure 5 As shown, the grenade release assembly 104 in this embodiment is a movable structure, including a fixed cylinder 104a and a release pin 104b slidably mounted on the fixed cylinder 104a. A fixing ring 104c is also provided on the mounting housing 101. In this embodiment, after one end of the iron buckle cable tie 109 is sleeved on the grenade fixing post 103, the grenade is placed in the grenade loading area 102. Then, the other end of the iron buckle cable tie 109 is sleeved on the release pin 104b. After the release pin 104b is inserted into the fixing ring 104c, it limits the iron buckle cable tie 109, thereby binding and restraining the grenade through the iron buckle cable tie 109, realizing the grenade loading in the grenade loading area 102.

[0049] When it is necessary to throw a grenade, the release pin 104b slides into the fixed cylinder 104a, thereby releasing the pin 104b from the iron buckle 109. After the iron buckle 109 loses its limit, the grenade is released from its restraint, thus completing the grenade throwing.

[0050] like Figure 2 as well as Figure 6 As shown, in this embodiment, a servo unit 200 is also mounted on the surface of the hang-up unit 100. The servo unit 200 includes a servo motor and a gear 203. The output end of the servo motor is connected to the gear 203. The servo motor can drive the gear 203 to rotate by working. In this embodiment, the servo motor is located in the hang-up housing 101 and is controlled by the ESP-32 development board, which serves as the central control unit. The ESP-32 development board can control whether the servo motor is working and control the servo motor to drive the gear 203 to rotate forward or backward. In this embodiment, the servo motor controls the gear 203 to rotate forward or backward by 180°. In this embodiment, forward rotation means that the gear 203 rotates clockwise, and reverse rotation means that the gear 203 rotates counterclockwise.

[0051] like Figure 2 as well as Figure 6 As shown, the servo unit 200 in this embodiment also includes a chain slide rail housing 201, which is fixedly installed on the hangar housing 101. A chain 202 is also provided inside the chain slide rail housing 201. The chain 202 is connected to a gear 203. The chain 202 can be moved within the chain slide rail housing 201 by rotating the gear 203. The airborne delivery device in this embodiment also includes a transmission unit 300. When the chain 202 moves, the transmission unit 300 can transmit power through the release pin 104b in the grenade release assembly 104, thereby enabling the limit pin 104b to move and release the limit on the iron buckle reverse cable tie 109.

[0052] like Figure 6 , Figure 7 as well as Figure 9As shown, in this embodiment, the transmission unit 300 includes a slide rail mounting component 301. In this embodiment, multiple spring assemblies 301a are mounted on the slide rail mounting component 301. The slide rail mounting component 301 is mounted on the hanger housing 101 via the spring assemblies 301a. In addition, a slide rail 302 is slidably mounted on the slide rail mounting component 301. In this embodiment, the slide rail 302 can move along the length direction of the slide rail mounting component 301. In this embodiment, a guide cylinder 303 and a fixed pulley 304 are also mounted on the hanger housing 101. One end of the traction rope is connected to the terminal block of the slide rail 302, and the other end passes through the guide cylinder 303, the fixed pulley 304, and the fixed cylinder 104a and is connected to the release pin 104b. When the slide rail 302 moves along the length direction of the slide rail mounting component 301, the slide rail 302 pulls the traction rope to move the release pin 104b, thereby releasing the restriction on the iron buckle reverse cable tie 109 and realizing the release of the grenade.

[0053] like Figure 8 As shown, this is a schematic diagram of the chain 202 in this embodiment. The chain 202 in this embodiment is composed of multiple chain components 202a connected sequentially by pins. One end of the chain 202 is the chain head 202b, and the other end is the chain tail 202c. Figure 8 As shown, in this embodiment, a hanging piece 202b-1 is provided on the side of the chain head 202b near the hanging housing 101, and a hook 202c-1 is connected to the chain tail 202c, and as shown... Figure 9 As shown, in this embodiment, a locking element 302a is also provided on the slide rail 302. When the grenade is installed on the grenade loading area 102, the hook 302a on the tail of the chain 202c is hooked onto the safety pin 204 of the grenade, and the hook 202b-1 on the head of the chain 202b is moved away from the slide rail 302. The effect is as follows: Figure 9As shown, when a grenade needs to be thrown, the EPS-32 development board first controls the servo motor to operate. The servo motor drives the gear 203 to rotate 180° clockwise, thus moving the chain 202. The tail of the chain 202c pulls the safety pin 204 of the grenade through the hook 202c-1, thus pulling out the safety pin 204. It is worth noting that in this embodiment, the displacement distance of the chain 202 caused by the gear 203 rotating 180° is sufficient to pull out the safety pin 204 of the grenade. At the same time, the head of the chain 202b moves towards one side of the slide rail 302. When the chain head 202b's hanging piece 202b-1 contacts the locking piece 302a on the slide rail 302, the surfaces of the hanging piece 202b-1 and the locking piece 302a are arc-shaped, thus the hanging piece 202b-1 applies pressure to the locking piece 302a, thereby pressurizing the slide rail 302 onto the slide rail mounting piece 301. The spring assembly 301a on the slide rail mounting piece 301 is compressed, and the slide rail mounting piece 301 and the slide rail 302 move towards one side of the motor housing 101, causing the chain head 202b... The hanging part 202b-1 passes over the locking part 302a and enters the slide rail 302. Then the spring assembly 301a resets. At this time, the grenade safety pin 204 has been pulled out, but the grenade has not yet been deployed. Then the servo control gear 203 reverses 180°, the chain 202 moves, and the chain head 202b moves on the slide rail 302 until the hanging part 202b-1 on the chain head 202b contacts the locking part 302a on the slide rail 302 to form an S-shaped locking structure. At the same time, the chain 202 continues to move, and the S-shaped locking structure is used to achieve... The chain 202 drives the slide rail 302 to move. The movement of the slide rail 302, through the traction rope, causes the release pin 104b to move and release the restriction on the iron buckle cable tie 109, thereby completing the grenade throwing. It should be noted that in this embodiment, the displacement distance of the chain 202 caused by the gear 203 rotating 180° is sufficient to allow the release pin 104b to release the restriction on the iron buckle cable tie 109. After the iron buckle cable tie 109 is released from restriction, the grenade is released, thereby realizing the grenade throwing.

[0054] In this embodiment, the grenade is deployed by first pulling out the safety pin 204 and then releasing the locking pin 104b from the buckle 109. This avoids the problem in existing technologies where the grenade's accuracy is poor due to the spring force during deployment. Therefore, the grenade deployment in this embodiment improves the accuracy of hitting the target. In this embodiment, the servo motor is an MG996R servo motor. Compared to existing techniques that use spring force to pull out the grenade pin, the MG996R servo motor can provide more... Stable tension improves the success rate of removing the safety pin 204 while avoiding excessive spring force affecting the drone's flight attitude. In this embodiment, the servo performs two actions: when the servo control gear 203 rotates clockwise, it pulls out the grenade safety pin 204; when the servo control gear 203 rotates counterclockwise, it pulls the release pin 104b to release the iron buckle and cable tie 109 from the grenade, thus releasing the grenade. The servo unit 200 and transmission unit 300 save structural space and reduce overall weight and cost.

[0055] In addition, to ensure that the slide rail 302 can achieve a limiting position after the grenade is thrown, such as Figure 12 As shown, the grenade release assembly 104 in this embodiment also includes a return spring 104d, which is installed in the fixed cylinder 104a. When the grenade is released, the slide rail 302 moves and drives the release pin 104b to move through the traction rope. At this time, the return spring 104d is compressed. In addition, the mounting housing 101 is also provided with an assembly to release the S-shaped locking structure. The S-shaped locking structure between the slide rail 302 and the chain head 202b is released by the release assembly, and then the slide rail 302 is reset by the elastic force of the return spring 104d.

[0056] like Figure 3 as well as Figure 4 As shown, the shell 101 of the grenade launcher also has an opening 105. In this embodiment, the contact component is a reset rocker 106. The reset rocker 106 is installed inside the shell 101 by a torsion spring. One end of the reset rocker 106 extends through the opening 105 to the outside of the shell 101. When the grenade is thrown, the S-shaped locking structure drives the slide rail 302 to move, causing the slide rail 302 to move to the reset rocker 106. The effect is as follows: Figure 11 As shown, after the grenade is thrown, in order to reset the slide rail 302, the reset rocker 106 is rotated. The reset rocker 106 applies pressure to the end of the slide rail 302, and the spring assembly 301a on the slide rail mounting 301 is compressed. The slide rail 302 and the slide rail mounting 301 move toward one side of the hanger housing 101, releasing the S-shaped locking structure. Then, the slide rail 302 is reset under the action of the traction rope and the reset spring 104d, preparing for the next grenade throw.

[0057] Example 2

[0058] like Figure 3 As shown, in this embodiment, the airborne delivery device, based on embodiment 1, also has a display screen 107 installed on the shell 101, and a mode switch 108 and a photosensitive sensor installed on the shell 101. The photosensitive sensor is used to receive the light signal from the UAV and convert the light signal into an electrical signal and transmit it to the ESP-32 development board. In this embodiment, the servo motor is electrically connected to the EPS-32 development board through the mode switch 108. In this embodiment, when the light signal provided by the UAV is converted into an electrical signal by the photosensitive sensor and transmitted to the ESP-32 development board through the GPIO interface, the EPS-32 development board controls the servo motor to work. In this embodiment, the EPS-32 development board is programmed with two types of instructions: "pull and release" and "pull and release". When the mode switch 108 is turned on and the display screen 107 shows mode one, the EPS-32 development board controls the servo to execute the "pull and release" instruction. When the mode switch 108 is switched and the display screen 107 shows mode two, the EPS-32 development board controls the servo to execute the "pull and release" instruction. The specific action relationship is as follows.

[0059] When the display screen 107 shows the mode one state, the airborne delivery device in this embodiment executes the "pull and release" command, that is, the EPS-32 development board only receives the trigger signal once, the servo control gear 203 rotates clockwise to pull out the safety pin 204, and then the servo control gear 203 rotates counterclockwise to pull the release pin 104b to move and release the limit of the iron buckle reverse buckle 109 to complete the grenade delivery. That is: when the light signal provided by the UAV is converted into an electrical signal by the photosensitive sensor, and the electrical signal is transmitted to the ESP-32 development board through the GPIO interface, the ESP-32 development board receives and processes the signal and then issues the command "rotate clockwise 180° - rotate counterclockwise 180°" to the servo through the GPIO interface; after receiving the command, the servo first rotates clockwise 180° to pull the grenade safety pin 204 through the chain tail 202c, and completes the removal of the grenade safety pin 204 within ≤1 second; then it rotates counterclockwise 180° to make the chain head 202b and the locking piece 302a form an S-shaped lock and move with the chain 202, and at the same time, the transmission unit 300 pulls the release pin 104b to release the grenade and complete the grenade release.

[0060] When the display screen 107 is in Mode 2, the airborne delivery device in this embodiment executes the "pull first, then release" command. That is, the EPS-32 development board receives two trigger signals. The first trigger removes the grenade safety pin 204, and the second trigger removes the grenade. Specifically, the light signal provided by the UAV is converted into an electrical signal by a photosensitive sensor and transmitted to the ESP-32 development board via the GPIO interface. After receiving and processing the signal, the ESP-32 development board sends a "rotate clockwise 180°" command to the servo motor via the GPIO interface. Upon receiving the command, the servo motor controls the gear 203 to rotate 180° clockwise, pulling the grenade safety pin 204 through the chain tail 202c. The removal of the grenade safety pin 204 is completed within ≤1 second. When the drone provides a light signal again, the photosensitive sensor converts the light signal into an electrical signal and transmits the signal to the ESP-32 development board through the GPIO interface. After receiving and processing the signal, the ESP-32 development board issues a "rotate counterclockwise 180°" command to the gear servo through the GPIO interface. After receiving the command, the gear servo controls the gear 203 to rotate counterclockwise 180° so that the chain head 202b and the locking piece 302a form an S-shaped lock and move with the chain 202. At the same time, the transmission unit 300 pulls the release pin 104b to release the grenade and complete the grenade delivery.

[0061] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An airborne delivery device, comprising a hangar unit (100), a servo unit (200), and a transmission unit (300), characterized in that, The hanger unit (100) includes a hanger housing (101), which is mounted on the UAV. The hanger housing (101) is provided with a grenade loading area (102), a grenade fixing post (103), and a grenade release assembly (104). The grenade is secured in the grenade loading area (102) by a metal buckle cable tie (109). One end of the metal buckle cable tie (109) is fitted on the grenade fixing post (103), and the other end is fitted on the grenade release assembly (104). The servo unit (200) drives the grenade release assembly (104) through the transmission unit (300) to release the metal buckle cable tie (109) and release the grenade.

2. The airborne delivery device according to claim 1, characterized in that, The grenade release assembly (104) includes a fixed cylinder (104a), a release pin (104b), and a fixed ring (104c). The release pin (104b) is slidably mounted on the fixed cylinder (104a), and one end of the iron buckle cable tie (109) is sleeved on the grenade fixing post (103), and the other end is sleeved on the release pin (104b). The release pin (104b) is inserted into the fixed ring (104c) to limit the iron buckle cable tie (109). The servo unit (200) works to drive the release pin (104b) to move towards the fixed cylinder (104a) through the transmission unit (300) to disengage from the fixed ring (104c) and then disengage from the iron buckle cable tie (109), thus releasing the limitation on the iron buckle cable tie (109).

3. The airborne delivery device according to claim 2, characterized in that, The servo unit (200) includes a chain slide rail housing (201), a servo, a gear (203), and a chain (202). The servo is installed in the hanger housing (101) and controlled by the central control unit in the hanger housing (101). The output end of the servo is connected to the gear (203). When the servo works, it drives the gear (203) to rotate and drive the chain (202) to move in the chain slide rail housing (201). The chain (202) moves to first pull out the grenade safety pin (204), and then the chain (202) moves in the opposite direction to drive the release pin (104b) to move through the transmission unit (300) to release the limit on the iron buckle reverse buckle strap (109).

4. The airborne delivery device according to claim 3, characterized in that, One end of the chain (202) is the chain head (202b), and the other end of the chain (202) is the chain tail (202c). The chain tail (202c) is connected to the grenade safety pin (204). When the servo drive drives the gear (203) to rotate clockwise, the chain tail (202c) pulls out the grenade safety pin (204). When the servo drive drives the gear (203) to rotate counterclockwise, the chain head (202b) drives the release pin (104b) to move towards the fixed cylinder (104a) through the transmission unit (300) to release the restriction on the iron buckle reverse buckle strap (109).

5. The airborne delivery device according to claim 4, characterized in that, The transmission unit (300) includes a slide rail mounting component (301) and a slide rail (302). The slide rail (302) is slidably mounted on the slide rail mounting component (301). A guide cylinder (303) and a fixed pulley (304) are also installed on the hanger housing (101). A traction rope is connected to the slide rail (302). The other end of the traction rope passes through the guide cylinder (303) and the fixed pulley (304) and enters the fixed cylinder (104a) and is connected to the release pin (104b). When the gear (203) rotates clockwise, the chain head (202b) enters the slide rail (302). When the gear (203) rotates counterclockwise, the chain head (202b) first forms an S-shaped locking structure with the slide rail (302), and then drives the slide rail (302) to move. The traction rope drives the release pin (104b) to move and release the limit on the iron buckle reverse buckle (109).

6. The airborne delivery device according to claim 5, characterized in that, The S-shaped locking structure includes a pendant (202b-1) on the chain head (202b) and a lock (302a) on the slide rail (302). When the gear (203) rotates clockwise, the pendant (202b-1) on the chain head (202b) passes over the lock (302a). When the gear (203) rotates counterclockwise, the pendant (202b-1) and the lock (302a) come into contact to form the S-shaped locking structure. The gear (203) continues to rotate counterclockwise, and the slide rail (302) moves along the length of the slide rail mounting part (301) through the chain head (202b). The slide rail (302) moves the release pin (104b) through the traction rope to release the limit on the iron buckle reverse buckle strap (109).

7. The airborne delivery device according to claim 6, characterized in that, The slide rail mounting component (301) is connected to the hanger housing (101) via a spring assembly (301a). When the hanger (202b-1) passes over the lock (302a), the hanger (202b-1) applies pressure to the lock (302a), causing the slide rail (302) and the slide rail mounting component (301) to compress the spring assembly (301a), thereby causing the slide rail (302) and the slide rail mounting component (301) to move toward the hanger housing (101).

8. The airborne delivery device according to claim 7, characterized in that, The grenade release assembly (104) also includes a return spring (104d), which is installed in the fixed cylinder (104a). When the slide rail (302) drives the release pin (104b) to move towards the fixed cylinder (104a), the release pin (104b) compresses the return spring (104d) to store force.

9. The airborne delivery device according to claim 8, characterized in that, It also includes a release component, which releases the S-shaped locking structure formed between the slide rail (302) and the chain head (202b). After the S-shaped locking structure is released, the slide rail (302) is reset by the elastic force of the return spring (104d).

10. The airborne delivery device according to claim 9, characterized in that, The release assembly includes a reset rocker (106), and an opening (105) is provided on the grenade housing (101). The reset rocker (106) is mounted on the grenade housing (101) by a torsion spring, and one end of the reset rocker (106) extends through the opening (105) to the outside of the grenade housing (101). When the grenade is thrown, the S-shaped locking structure drives the slide rail (302) to move to the reset rocker (106). The reset rocker (106) rotates and applies pressure to the end of the slide rail (302). The spring assembly (301a) on the slide rail mounting part (301) is compressed, and the slide rail (302) and the slide rail mounting part (301) move toward one side of the grenade housing (101), releasing the S-shaped locking structure.

Images