An air transport and air drop integrated pallet system and method

Abstract

The application discloses an air transportation and air drop integrated tray system and method, and the system comprises: an air transportation container tray, a traction lock device, an unlocking trigger device, an unlocking trigger pull line, a traction parachute and a landing main parachute; the traction lock device and the unlocking trigger device are installed on the two sides of the air transportation container tray, and the two are connected through the unlocking trigger pull line; the traction lock device is connected with the traction parachute and the landing main parachute respectively; the traction lock device is used for locking the air transportation container tray on the airplane before air drop, the air transportation container tray is pulled out of the cabin under the action of the traction parachute during air drop, and after the air transportation container tray is out of the cabin, the traction lock device is unlocked through the unlocking trigger pull line, so that the air transportation container tray is separated from the traction parachute, and the landing main parachute is opened; the application is based on the existing standardized air transportation container tray, and with the help of the existing air drop parachute and other equipment, the heavy air drop of 5t level can be realized, and the air transportation and air drop problem of small tonnage is solved.

Description

Technical Field

[0001] This invention belongs to the field of air container transportation technology, specifically relating to an integrated air transport and airdrop pallet system and method. Background Technology

[0002] Currently, my country's heavy-duty airdrop equipment is mainly divided into 10t and 21t classes. Due to historical reasons, this equipment can only be used for airdrop and cannot achieve integrated transport and delivery. There is a lack of 5t-class airdrop platforms in China, and the existing 5t-class freight platforms are mainly B6P container pallets. These pallets lack airdrop-compatible locks, umbrellas, and cushioning devices, and their interfaces and local strength are unsuitable for airdrop, limiting their use to containerized freight. Therefore, it is necessary to optimize and improve the B6P container pallet, starting with the 5t-class airdrop platform, to meet the requirements of integrated transport and delivery. Summary of the Invention

[0003] In view of this, the present invention provides an integrated air transport and airdrop pallet system and method, which, based on existing standardized air transport container pallets and with the help of existing airdrop parachutes and other equipment, can achieve 5-ton heavy load airdrop and solve the problem of air transport and airdrop of small tonnage items.

[0004] This invention is achieved through the following technical solution:

[0005] An integrated air transport and airdrop pallet system includes: an air transport container pallet, a towing lock device, an unlocking trigger device, an unlocking trigger cable, a towing parachute, and a main parachute.

[0006] The air transport container pallet is used for containerized air transport of goods, and the air transport container pallet is connected to the main parachute, which is used for the smooth descent of the air transport container pallet.

[0007] The towing lock device is installed in the middle of the towing side frame of the air transport container pallet and is connected to the towing parachute and the main parachute. The towing lock device is used to lock the air transport container pallet on the aircraft before airdrop. During airdrop, the air transport container pallet is pulled out of the cabin by the towing force of the towing parachute. After the air transport container pallet leaves the cabin, it separates from the towing parachute and opens the main parachute at the same time.

[0008] The unlocking trigger mechanism is installed in the middle of the non-traction side frame of the air transport container pallet and is connected to the traction lock device via an unlocking trigger cable. The unlocking trigger mechanism is used to control the traction lock device to unlock after the air transport container pallet has completely exited the cabin, so that the traction parachute can be released and the main parachute can be deployed at the same time.

[0009] Furthermore, the traction lock device includes: a mounting base A, a lock body assembly, and a traction connector;

[0010] The mounting base A is installed in the middle of the long side frame of the air transport container pallet;

[0011] The top end of the traction connector is connected to the main parachute and the guide parachute of the main parachute, and the bottom end is connected to the traction parachute. The upper surface of one side of the traction connector is machined with an upward-opening unlocking slot. The unlocking slot cooperates with the lock body assembly to realize the quick locking and unlocking of the lock body assembly. The lower surface of the same side of the traction connector is machined with a downward-opening tiger tooth groove.

[0012] The lock body assembly includes: a bolt mechanism, a locking and safety mechanism, and a lock shell;

[0013] One side of the lock housing is mounted on the mounting base A, and the other opposite side is provided with a tiger tooth structure. The side end of the traction connector is mounted on the tiger tooth structure of the lock housing, and the tiger tooth groove on the lower surface of the traction connector engages with the tiger tooth structure, which allows the traction connector to slide out smoothly from the lock housing.

[0014] Both the locking safety mechanism and the locking tongue mechanism are installed inside the lock housing, with the locking tongue mechanism located below the locking safety mechanism. The locking safety mechanism adopts a swing-type structure, and the locking tongue mechanism adopts a four-bar linkage. The locking safety mechanism is connected to the unlocking trigger cable, and the locking tongue mechanism cooperates with the unlocking slot of the traction connector to achieve engagement with the traction connector. When the cable pulls the locking safety mechanism, the locking tongue mechanism is separated from the traction connector in sequence through the locking safety mechanism and the locking tongue mechanism. The traction connector and the traction parachute and the main parachute and guide parachute connected to it detach. When the main parachute and guide parachute detach, the main parachute is pulled to open.

[0015] Furthermore, the traction joint includes: a guide ring, a safety buckle, and a traction ring;

[0016] The traction ring has an L-shaped structure; a locking hook is machined at the top of the vertical part of the L-shaped structure, the bottom of the guide ring is installed in the locking hook, and a round hole is machined at the top of the guide ring for connecting with the main parachute and the guide parachute of the main parachute; the opening of the locking hook is closed by a rotatable safety buckle; the safety buckle is installed on the traction ring by a pin E, and the safety buckle can rotate around the axis of the pin E.

[0017] The bottom of the vertical part of the L-shaped structure is machined with a round mounting hole for connecting to a towing parachute;

[0018] The upper surface of the horizontal portion of the L-shaped structure is machined with an upward-opening unlocking slot, which cooperates with the lock body assembly to enable quick locking and unlocking of the lock body assembly; the lower surface of the horizontal portion of the L-shaped structure is machined with a downward-opening tiger tooth groove.

[0019] Furthermore, the locking mechanism includes: a pull cable connector, a locking rocker arm, an unlocking rocker arm, and a pull cable rocker arm;

[0020] One end of the unlocking rocker arm is pinned to the lock housing via a pin A; the unlocking rocker arm can rotate around the axis of the pin A; the other end of the unlocking rocker arm is provided with a downward-facing triangular prism-shaped limiting boss; a guide rod is fixedly connected to the middle of the unlocking rocker arm, and the guide rod is slidably engaged with an arc-shaped guide groove A machined on the lock housing, the arc of which is centered on the axis of the pin A;

[0021] One end of the locking rocker arm is bolted to the lock housing, and the locking rocker arm can rotate around the axis of the bolt. One end face of the other end of the locking rocker arm is provided with a guide cylinder, which slides in fit with an arc-shaped guide groove B machined on the lock housing. The arc of the arc-shaped guide groove B is centered on the axis of the bolt. The other end face of the other end of the locking rocker arm is machined with an open slot, which can cooperate with the guide rod of the unlocking rocker arm. When the guide rod of the unlocking rocker arm is located in the open slot, the unlocking rocker arm is locked. When the guide rod of the unlocking rocker arm is not located in the open slot, the unlocking rocker arm is unlocked.

[0022] The pull-cord rocker arm has a double-layer side plate structure, with each side plate being a V-shaped structure and the included angle of the V-shape being an obtuse angle. One side plate of the pull-cord rocker arm is located between the unlocking rocker arm and the locking rocker arm, while the other side plate of the pull-cord rocker arm is located between the unlocking rocker arm and the lock housing. One end of the pull-cord rocker arm is pinned to the end of the unlocking rocker arm via pin B, and the pull-cord rocker arm can rotate around the axis of pin B. The other end of the pull-cord rocker arm is pinned to the pull-cord connector, and when the locking safety mechanism is not in operation, the pull-cord connector is supported in the mounting groove provided on the upper surface of the unlocking rocker arm. A limiting cylinder is provided in the middle of the pull-cord rocker arm, and the limiting cylinder abuts against a limiting protrusion provided on the side of the middle part of the locking rocker arm.

[0023] Furthermore, torsion springs are provided at the pin A of the unlocking rocker arm, the bolt of the locking rocker arm, the pin B of the pull-wire rocker arm, and the pin joint between the pull-wire rocker arm and the pull-wire connector, for the motion reset of each rocker arm.

[0024] Furthermore, the locking tongue mechanism includes: a crank, a connecting rod, a locking tongue rocker arm, and a limiting roller;

[0025] One end of the latch rocker arm is pinned to the lock housing via a pin C; the latch rocker arm can rotate around the axis of the pin C; the other end of the latch rocker arm is provided with a downward trapezoidal limiting boss, which can cooperate with the unlocking slot of the traction ring at the tiger tooth structure of the lock housing. When the trapezoidal limiting boss is located in the unlocking slot, the traction connector is engaged and locked; when the trapezoidal limiting boss is not located in the unlocking slot, the traction connector is released; the middle part of the latch rocker arm is provided with an upward-opening triangular prism-shaped limiting groove, which can cooperate with the triangular prism-shaped limiting boss of the unlocking rocker arm. When the triangular prism-shaped limiting boss of the unlocking rocker arm is located in the triangular prism-shaped limiting groove, the latch rocker arm is locked; when the triangular prism-shaped limiting boss of the unlocking rocker arm is not located in the triangular prism-shaped limiting groove, the latch rocker arm is unlocked, thereby allowing the traction connector to be released.

[0026] One end of the crank is pinned to the lock housing via a pin D; the crank can rotate around the axis of the pin D.

[0027] One end of the connecting rod is pinned to the middle of the locking tongue rocker arm, and the other end of the connecting rod is pinned to the other end of the crank; and a limiting roller is installed on the crank at the connection end with the connecting rod, and the limiting roller is in rolling engagement with the upper surface of the locking tongue rocker arm.

[0028] Furthermore, the unlocking triggering device includes: a mounting base B, a pull-wire mounting base, a triggering mechanism, a base, and an actuating mechanism;

[0029] Mounting base B is installed in the middle of the long side frame of the air transport container pallet;

[0030] The base is mounted on the mounting base B. A rectangular guide hole is machined in the base. The length direction of the rectangular guide hole is set along the length direction of the side of the air transport container pallet where the unlocking trigger device is located. The rectangular guide hole passes through two opposite sides of the base, so that the two ends of the rectangular guide hole are end A and end B, respectively.

[0031] A locking groove is machined on the end face of the rectangular guide hole on the base. The bottom of the locking groove is connected to the rectangular guide hole, and the cross-sectional shape of the locking groove is exactly the same as the cross-sectional shape of the rectangular guide hole. A hook is also provided on the end face of the rectangular guide hole on the base.

[0032] A partition plate is machined inside the base, on the side closer to end B than end A of the rectangular guide hole. A trigger mechanism mounting hole is machined on the partition plate. The axial direction of the trigger mechanism mounting hole is perpendicular to the length direction of the rectangular guide hole. The trigger mechanism mounting hole communicates with the rectangular guide hole.

[0033] The pull-wire mounting base is a cylindrical structure with openings at both ends, and the side wall of the pull-wire mounting base is machined with a T-shaped opening; the pull-wire mounting base is installed on the end face of the rectangular guide hole on the base, and the inner cavity of the pull-wire mounting base communicates with the rectangular guide hole; the pull-wire mounting base is used to install the unlocking trigger pull-wire;

[0034] The actuator includes: a slider, a tension spring, a pull block, a pull rope, and a pull ring connected in sequence; the slider and the pull block are both rectangular block structures, one side of the slider is machined with a T-shaped pull wire head mounting groove, and the pull wire head mounting groove passes through the end of the slider; the other side of the slider is machined with a stop groove with the opening facing downward.

[0035] The actuator is installed in the rectangular guide hole of the base and slides in cooperation with the rectangular guide hole;

[0036] When the air transport container pallet is located inside the cabin, one end of the slider passes through end B of the rectangular guide hole, and this end is located inside the pull cable mounting seat. The pull cable head mounting groove of the slider is opposite to the T-shaped opening on the pull cable mounting seat. One end of the trigger mechanism passes through the trigger mechanism mounting hole and is locked in the stop groove of the slider to limit the slider. The other end of the trigger mechanism abuts against the cabin floor plate. The pull block is pulled out of end A of the rectangular guide hole by the pull rope, and after the pull block is rotated, it is locked in the locking groove, which locks the position of the pull block. At this time, the tension spring is in a stretched state. The pull rope is installed on the hook through the pull ring.

[0037] Furthermore, the triggering mechanism includes: a roller, a compression spring, a connecting frame, and a locking block;

[0038] The connecting frame passes through the trigger mechanism mounting hole; the locking block is installed at the end of the connecting frame above the partition of the base and cooperates with the stop groove on the slider, thereby locking the position of the slider; the roller is installed at the end of the connecting frame below the partition of the base via a roller bracket; the compression spring is installed outside the connecting frame and between the roller bracket and the partition of the base; when the air transport container pallet is in the cabin, the roller abuts against the cabin floor, causing the compression spring to be in a compressed state, with one end of the compression spring abutting against the roller bracket and the other end abutting against the lower surface of the partition of the base; when the air transport container pallet leaves the cabin, the roller is unrestrained, and the connecting frame and the roller and locking block connected to it move downward as a whole under the restoring force of the compression spring.

[0039] Furthermore, the unlocking trigger device also includes an adjusting screw and a locking nut;

[0040] The unlocking trigger cable is a brake cable, consisting of a steel wire and an outer sheath covering the steel wire. The end of the steel wire at the head of the unlocking trigger cable has a cylindrical connector, and the axis of the cylinder is perpendicular to the axis of the steel wire. The unlocking trigger cable is arranged along the side of the air transport container pallet. The tail of the unlocking trigger cable is connected to the cable connector of the traction lock device. The connector at the head of the unlocking trigger cable passes through the T-shaped opening on the cable mounting base and is installed in the cable head mounting groove of the slider.

[0041] The adjusting screw has a through hole, the diameter of which is larger than the diameter of the steel wire but smaller than the outer diameter of the sheath. Both the adjusting screw and the locking nut have openings on their sides for the steel wire to pass through. The adjusting screw is threaded to the cable mounting base, and the side openings of the adjusting screw and the locking nut are opposite each other. The steel wire that triggers the release of the cable head is inserted into the through hole of the adjusting screw through the side openings of the adjusting screw and the locking nut. When the steel wire is taut, the locking nut abuts against the end face of the cable mounting base, and the sheath of the cable head abuts against the head end face of the adjusting screw. When the steel wire is further taut under the action of the actuator, the adjusting screw and the locking nut allow relative movement between the steel wire and the sheath.

[0042] An operation method for an integrated airlift and airdrop pallet system, the method being as follows:

[0043] Step 1: Install the towing lock device, unlocking trigger device, and unlocking trigger cable at the corresponding positions on the air transport container pallet;

[0044] Step 2: Install the towing parachute to the towing lock device, install the main parachute to the air transport container pallet, and install the main parachute and guide parachute of the main parachute to the towing lock device.

[0045] Step 3: Open the cabin and release the towing parachute. The air transport container pallet is towed out of the cabin. The towing lock device remains locked until the air transport container pallet is completely out of the cabin.

[0046] Step 4: The moment the air transport container pallet leaves the cabin, the unlock trigger device is activated, the unlock trigger cable is pulled, the unlock trigger cable is then pulled, and the towing lock device is activated. The towing lock device unlocks and releases the towing parachute and the main parachute and pilot parachute connected to the main parachute. The towing parachute is disconnected from the air transport container pallet, and the main parachute and pilot parachute then open the main parachute connected to the air transport container pallet.

[0047] Step 5: The air transport container pallet lands on the ground, completing the airdrop.

[0048] Beneficial effects:

[0049] (1) The air transport and airdrop integrated pallet system of the present invention is mainly an air transport and airdrop equipment that is compatible with aircraft, takes into account the requirements of aircraft air transport, and has the function of airdrop. It has the function of air transport and airdrop integration. By using standard air transport container pallets of transport aircraft and adding towing lock devices and unlocking trigger devices, the airdrop function of pallets is increased, realizing the integration of pallet airdrop. During loading, it can be quickly connected, locked and fixed. During airdrop, it can be quickly unlocked and separated, enabling it to achieve 5t heavy load airdrop by towing parachute. The side guide rail locking port remains unchanged, improving the mobility of material transport and having strong practical value.

[0050] (2) The traction cable device of the present invention unlocks the traction joint by adopting a locking safety mechanism with a swing structure and a locking tongue mechanism with a four-bar linkage. The unlocking method is simple, reliable and easy to operate.

[0051] (3) The locking mechanism of the present invention mainly consists of two functions: a locking function for the locking tongue and a safety function to prevent vibration and impact. The locking function for the locking tongue is mainly limited by the unlocking rocker arm to prevent the locking tongue mechanism from moving and unlocking. The safety function to prevent vibration and impact is mainly limited by the concave and convex structure between the locking rocker arm and the unlocking rocker arm to restrict the unlocking rocker arm from swinging upward without receiving the pulling command of the unlocking trigger cable, thus preventing abnormal unlocking.

[0052] (4) The unlocking triggering device of the present invention has a simple structure, is easy to operate, saves effort and time, and has high reliability. It uses the cabin floor plate as the trigger signal to realize the triggering action of the main parachute. Moreover, it does not require the addition of auxiliary equipment to the cabin. Therefore, it has good practicality, is easy to promote and apply, and has great practical value.

[0053] (5) The unlocking trigger device of the present invention also includes an adjusting screw and a locking nut. When the wire is in a taut state, the locking nut abuts against the end face of the pull wire mounting base, and the outer sheath of the unlocking trigger pull wire head abuts against the head end face of the adjusting screw. When the wire is further taut under the action of the actuator, the adjusting screw and the locking nut can realize relative movement between the wire and the outer sheath, thereby realizing the adjustment of the wire tension.

[0054] (6) The installation interfaces of the pallet traction lock and the unlocking trigger device of the present invention both adopt a T-shaped structure. The corresponding mounting bases (i.e., mounting base A and mounting base B) are universal. The screw hole positions of the mounting bases are consistent, and there is no distinction between front and back for air transport container pallets, thus preventing incorrect installation. Attached Figure Description

[0055] Figure 1 This is a structural diagram of the integrated pallet system of the present invention;

[0056] Figure 2This is a structural diagram of the traction lock device of the present invention;

[0057] Figure 3 and Figure 4 This is a structural diagram of the mounting base A;

[0058] Figure 5 This is a structural diagram of the lock case;

[0059] Figure 6 This is a structural diagram of lock case one;

[0060] Figure 7 Here is a structural diagram of lock case two;

[0061] Figure 8 Here is a structural diagram of the traction joint;

[0062] Figure 9 and Figure 10 This is a structural diagram of the lock body assembly;

[0063] Figure 11 and Figure 12 This is a structural diagram of the locking tongue mechanism;

[0064] Figure 13 This is a structural diagram of the locking tongue rocker arm;

[0065] Figure 14 Here is a structural diagram of the crank;

[0066] Figure 15 Here is a structural diagram of the connecting rod;

[0067] Figure 16 and Figure 17 To establish the structural composition diagram of the insurance institution;

[0068] Figure 18 This is a structural diagram of a pull wire connector;

[0069] Figure 19 Structural diagram for unlocking the rocker arm;

[0070] Figure 20 A structural diagram of the locking rocker arm;

[0071] Figure 21 This is a structural diagram of the pull-wire rocker arm;

[0072] Figure 22 A structural diagram of the unlocking trigger device;

[0073] Figure 23 This is a structural diagram of the base;

[0074] Figure 24 This is a structural diagram of the guy wire mounting bracket;

[0075] Figure 25This is a structural diagram of the triggering mechanism;

[0076] Figure 26 A structural diagram of the actuator;

[0077] Figure 27 This is a structural diagram of the slider;

[0078] Among them, 1-air transport container pallet, 2-towing lock device, 3-unlocking trigger device, 4-unlocking trigger cable;

[0079] 5-Mounting base A, 6-Lock body assembly, 7-Traction connector, 8-Crank, 9-Connecting rod, 10-Lock tongue rocker arm, 11-Limiting roller, 12-Limiting sleeve B, 13-Lock housing one, 14-Lock housing two, 15-Pull cable connector, 16-Locking rocker arm, 17-Unlocking rocker arm, 18-Pull cable rocker arm, 19-Limiting sleeve A, 20-Open slot, 21-Guide ring, 22-Safety buckle, 23-Pin E, 24-Traction ring, 25-Tiger tooth structure;

[0080] 26-Pull cable mounting base, 27-Trigger mechanism, 28-Base, 29-Actuator, 30-Adjusting screw, 31-Locking nut, 32-Locking groove, 33-Trigger mechanism mounting hole, 34-Rectangular guide hole, 35-Hook, 36-Roller, 37-Compression spring, 38-Connecting bracket, 39-Locking block, 41-Slider, 42-Tension spring, 43-Pull block, 44-Pull rope, 45-Pull ring, 411-Stop groove, 412-Pull cable head mounting groove. Detailed Implementation

[0081] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0082] Example 1:

[0083] This embodiment provides an integrated airlift and airdrop pallet system; see appendix. Figure 1 Includes: 1. Air transport container pallet; 2. Towing lock device; 3. Unlocking trigger device; 4. Unlocking trigger cable; 5. Towing parachute and main parachute (the towing parachute and main parachute are not shown in the illustration);

[0084] The air transport container pallet 1 adopts a plate mesh technology to provide a carrying platform for goods and is used for containerized air transport of materials;

[0085] The towing lock device 2 is installed in the middle of the towing side frame of the air transport container pallet 1 and is connected to the towing parachute and the main parachute. The towing lock device 2 is used to lock the air transport container pallet 1 on the aircraft before airdrop. During airdrop, the air transport container pallet 1 is pulled out of the cabin by the towing force of the towing parachute. After the air transport container pallet 1 leaves the cabin, it separates from the towing parachute and opens the main parachute.

[0086] The unlocking trigger mechanism 3 is installed in the middle of the non-traction side frame (opposite to the traction side frame) of the air transport container pallet 1, and is connected to the traction lock device 2 via the unlocking trigger cable 4. The unlocking trigger mechanism 3 is used to control the traction lock device 2 to unlock via the unlocking trigger cable 4 after the air transport container pallet 1 has completely exited the cabin, so that the traction parachute can be released and the main parachute can be opened at the same time. The unlocking trigger cable 4 is connected to the traction lock device 2 at one end and to the unlocking trigger mechanism 3 at the other end.

[0087] Example 2:

[0088] This embodiment, based on Embodiment 1, provides a specific structural composition of a traction lock device, see Appendix. Figure 2 The traction lock device 2 includes: a mounting base A5, a lock body assembly 6, and a traction connector 7;

[0089] See appendix Figure 3-4 The mounting base A5 is used for installing the towing lock device 2 on the air transport container pallet 1. It is installed in the middle of the long side frame (i.e., the towing side frame) of the air transport container pallet 1 using 10 M8 high-strength bolts (6 M8 high-strength bolts are installed on the vertical surface of the frame of the air transport container pallet 1, and 4 M8 high-strength bolts are installed on the flange of the frame of the air transport container pallet 1). In addition to facilitating the installation of the towing lock device 2 on the air transport container pallet 1, the mounting base A5 can also increase the force-bearing area and reduce the pressure of the towing force on the air transport container pallet 1. The mounting base A5 has a Z-shaped cross section with a T-slot in the middle and quick-release pin holes on both sides of the T-slot. The lock body assembly 6 is installed on the mounting base A5, and one side of the lock body assembly 6 mates with the T-slot on the mounting base A5 to achieve quick loading and unloading between the lock body assembly 6 and the mounting base A5. The other opposite side of the lock body assembly 6 is detachably connected to the towing connector 7.

[0090] See appendix Figure 8 The traction joint 7 is the link between the traction parachute, the traction lock device 2, and the main parachute, and includes: a guide ring 21, a safety buckle 22, a pin E23, and a traction ring 24;

[0091] The traction ring 24 has an L-shaped structure; a locking hook is machined at the top of the vertical part of the L-shaped structure, the bottom of the guide ring 21 is installed in the locking hook, and a round hole is machined at the top of the guide ring 21 for connecting with the main parachute guide parachute of the main parachute; the opening of the locking hook is closed by a rotatable safety buckle 22, which is used to prevent the guide ring 21 from falling out and to realize the quick release function of the guide ring 21; the safety buckle 22 is installed on the traction ring 24 by a pin E23, and the safety buckle 22 can rotate around the axis of the pin E23;

[0092] The bottom of the vertical part of the L-shaped structure is machined with a round mounting hole for connecting to a towing parachute;

[0093] The upper surface of the horizontal portion of the L-shaped structure is machined with an upward-opening unlocking slot, which cooperates with the lock body assembly 6 to realize quick locking and unlocking of the lock body assembly 6; the lower surface of the horizontal portion of the L-shaped structure is machined with a downward-opening tiger tooth groove.

[0094] The lock body assembly 6 is the core functional component of the entire traction lock device 2. (See Appendix) Figure 9-10 This includes: a locking bolt mechanism, a locking and safety mechanism, and a lock housing;

[0095] See appendix Figure 5-7 The lock shell is the mounting base of the entire lock body assembly 6 and also the main bearing body that can withstand a traction force of not less than 2t. In order to facilitate the installation of the lock body assembly 6, the lock shell in this embodiment adopts a two-lobed structure, with the two lobes being lock shell one 13 and lock shell two 14. Lock shell one 13 and lock shell two 14 are fixed together by positioning pins and anti-shear screws to form the lock shell. One outer side of the lock shell is provided with a T-shaped boss, which cooperates with the T-shaped groove of the mounting base A5 to achieve quick disassembly and installation. The other opposite side of the lock shell is provided with a tiger tooth structure 25. The horizontal part of the traction ring 24 of the traction joint 7 is installed on the tiger tooth structure 25 of the lock shell, and the tiger tooth groove on the lower surface of the traction ring 24 engages with the tiger tooth structure 25. The lock body assembly 6 bites the closed ring opening of the traction ring 24, and at the same time, the traction joint 7 can slide out smoothly from the lock shell.

[0096] The locking mechanism is installed inside the lock housing and adopts a swing-type structure. See Appendix. Figure 16-17 It includes: pull cable connector 15, locking rocker arm 16, unlocking rocker arm 17 and pull cable rocker arm 18;

[0097] See appendix Figure 19One end of the unlocking rocker arm 17 is pinned to the lock housing via a pin A, and each end of the pin A is fitted with a limiting sleeve A19. One end of each limiting sleeve A19 abuts against the unlocking rocker arm 17, and the other end abuts against the inner wall of the lock housing, thereby limiting the unlocking rocker arm 17 in the axial direction of the pin A and preventing the unlocking rocker arm 17 from shaking. The unlocking rocker arm 17 can rotate around the axis of the pin A. The other end of the unlocking rocker arm 17 is provided with a downward triangular prism-shaped limiting boss. A guide rod is fixedly connected to the middle of the unlocking rocker arm 17. The guide rod slides in fit with the arc-shaped guide groove A machined on the lock housing 13. The arc of the arc-shaped guide groove A is centered on the axis of the pin A.

[0098] See appendix Figure 20 One end of the locking rocker arm 16 is bolted to the lock housing pin, and the locking rocker arm 16 can rotate around the axis of the bolt; one end face of the other end of the locking rocker arm 16 is provided with a guide cylinder, which slides in fit with the arc-shaped guide groove B machined on the lock housing 14, and the arc of the arc-shaped guide groove B is centered on the axis of the bolt; the other end face of the other end of the locking rocker arm 16 is machined with an open slot 20, which can cooperate with the guide rod of the unlocking rocker arm 17. When the guide rod of the unlocking rocker arm 17 is located in the open slot 20, the unlocking rocker arm 17 is locked; when the guide rod of the unlocking rocker arm 17 is not located in the open slot 20, the unlocking rocker arm 17 is unlocked.

[0099] See appendix Figure 21 The pull-cord rocker arm 18 has a double-layer side plate structure, with each side plate being a V-shaped structure and the included angle of the V-shape being an obtuse angle. One side plate of the pull-cord rocker arm 18 is located between the unlocking rocker arm 17 and the locking rocker arm 16, and the other side plate of the pull-cord rocker arm 18 is located between the unlocking rocker arm 17 and the lock housing 13. One end of the pull-cord rocker arm 18 is pinned to the end of the unlocking rocker arm 17 where the pin A is located via pin B, and the pull-cord rocker arm 18 can rotate around the axis of pin B. The other end of the pull-cord rocker arm 18 is pinned to the pull-cord connector 15. See Appendix. Figure 18 When the locking mechanism is not in operation, the pull cable connector 15 is supported in the mounting groove provided on the upper surface of the unlocking rocker arm 17, and the pull cable connector 15 is connected to the unlocking trigger pull cable 4; a limiting cylinder is provided in the middle of the pull cable rocker arm 18, and the limiting cylinder abuts against the limiting protrusion provided on the side of the middle part of the locking rocker arm 16.

[0100] Among them, the pin A of the unlocking rocker arm 17, the bolt of the locking rocker arm 16, the pin B of the pull-wire rocker arm 18, and the pin joint between the pull-wire rocker arm 18 and the pull-wire connector 15 are all equipped with torsion springs for the movement reset of each rocker arm.

[0101] The working principle of the locking mechanism is as follows: When the unlocking trigger pull cord 4 pulls the pull cord connector 15, the pull cord connector 15 moves upward, thereby driving the pull cord rocker arm 18 to rotate upward around the axis of pin B. When the pull cord rocker arm 18 rotates upward, it pushes the locking rocker arm 16 to rotate to the right around the axis of the bolt through the limiting cylinder. At this time, the guide rod of the unlocking rocker arm 17 disengages from the opening slot 20, and the unlocking rocker arm 17 is unlocked. When the pull cord connector 15 continues to move upward, the pull cord connector 15 drives the unlocking rocker arm 17 to rotate upward around the axis of pin A. Therefore, the locking mechanism mainly consists of two functions: a latch locking function and a vibration and shock prevention function. The latch locking function is mainly achieved by the unlocking rocker arm 17 limiting the movement of the latch mechanism, preventing it from moving to unlock. The vibration and shock prevention function is mainly achieved by the concave and convex structure between the locking rocker arm 16 and the unlocking rocker arm 17, limiting the upward swing of the unlocking rocker arm 17 without receiving the pulling command of the unlocking trigger pull cord 4, thus preventing abnormal unlocking.

[0102] See appendix Figure 11-12 The locking tongue mechanism is installed inside the lock housing and located below the locking and safety mechanism. The locking tongue mechanism adopts a four-bar linkage mechanism, including: crank 8, connecting rod 9, locking tongue rocker arm 10 and limiting roller 11.

[0103] See appendix Figure 13 One end of the latch rocker arm 10 is pinned to the lock housing via a pin C, and each end of the pin C is fitted with a limiting sleeve B12. One end of each limiting sleeve B12 abuts against the latch rocker arm 10, and the other end abuts against the inner wall of the lock housing, thereby limiting the latch rocker arm 10 axially on the pin C and preventing the latch rocker arm 10 from shaking. The latch rocker arm 10 can rotate around the axis of the pin C. The other end of the latch rocker arm 10 is provided with a downward trapezoidal limiting boss. The trapezoidal limiting boss can cooperate with the unlocking slot of the traction ring 24 at the tiger tooth structure 25 of the lock housing. When the trapezoidal limiting boss is engaged, the locking mechanism is activated. When the boss is located in the unlocking slot, the traction connector 7 is engaged and locked. When the trapezoidal limiting boss is not located in the unlocking slot, the traction connector 7 is released. The middle part of the locking tongue rocker arm 10 is provided with an upward-opening triangular prism-shaped limiting groove. The triangular prism-shaped limiting groove can cooperate with the triangular prism-shaped limiting boss of the unlocking rocker arm 17. When the triangular prism-shaped limiting boss of the unlocking rocker arm 17 is located in the triangular prism-shaped limiting groove, the locking tongue rocker arm 10 is locked. When the triangular prism-shaped limiting boss of the unlocking rocker arm 17 is not located in the triangular prism-shaped limiting groove, the locking tongue rocker arm 10 is unlocked, thereby allowing the traction connector 7 to be released.

[0104] See appendix Figure 14One end of the crank 8 is pinned to the lock housing via a pin D, and each end of the pin D is fitted with a limiting sleeve B12. One end of each limiting sleeve B12 abuts against the crank 8, and the other end abuts against the inner wall of the lock housing, thereby limiting the crank 8 in the axial direction of the pin D and preventing the crank 8 from shaking. The crank 8 can rotate around the axis of the pin D.

[0105] See appendix Figure 15 One end of the connecting rod 9 is pinned to the middle of the locking tongue rocker arm 10, and the other end of the connecting rod 9 is pinned to the other end of the crank 8; and a limiting roller 11 is installed on the crank 8 at the connection end with the connecting rod 9, and the limiting roller 11 rolls with the upper surface of the locking tongue rocker arm 10.

[0106] The locking mechanism of the latch mechanism is as follows: when the crank 8 and connecting rod 9 are near the dead point, the latch mechanism closes (that is, the trapezoidal limiting boss of the latch rocker arm 10 is located in the unlocking slot of the traction ring 24, and the traction joint 7 is engaged and locked). The locking rocker arm 10 is precisely limited by the triangular prism limiting groove of the latch rocker arm 10 and the triangular prism limiting boss of the locking safety mechanism. At this time, the opening force of the latch rocker arm 10 is transmitted to the crank 8 shaft in the four-bar linkage through the connecting rod 9, and finally to the lock housing. The yaw pull side of the latch mechanism is transmitted to the lock housing through the pin C of the latch rocker arm 10 itself. Another small part of the force of the latch mechanism is transmitted to the lock housing through the locking safety mechanism.

[0107] The working principle of the locking tongue mechanism is as follows: when the pull cable connector 15 drives the unlocking rocker arm 17 to rotate upward around the axis of the pin A, the triangular prism-shaped limiting boss of the unlocking rocker arm 17 disengages from the triangular prism-shaped limiting groove of the locking tongue rocker arm 10, the locking tongue rocker arm 10 is unlocked, the trapezoidal limiting boss of the locking tongue rocker arm 10 can disengage from the unlocking slot of the traction ring 24, and the traction connector 7 is released.

[0108] The assembly process of the traction lock device is as follows: First, the mounting base A5 is installed in the middle of the long side frame of the air transport container pallet 1 using high-strength bolts; then, the lock body assembly 6 is installed on the mounting base A5. The lock body assembly 6 and the mounting base A5 are connected by a T-slot and a T-shaped boss, which can achieve quick loading and unloading; then, the locking rocker arm 16 on the lock body assembly 6 is moved, and the locking tongue rocker arm 10 is moved by the unlocking rocker arm 17, and the traction connector 7 is pushed in. The tiger tooth groove of the traction connector 7 and the tiger tooth structure 25 of the lock shell are engaged. At the same time, the unlocking slot of the traction connector 7 is engaged with the trapezoidal limiting boss of the locking tongue rocker arm 10 to achieve the biting and locking of the traction connector 7.

[0109] Example 3:

[0110] This embodiment, based on embodiment 1, provides a specific structural composition of the unlocking trigger device, see appendix. Figure 22The unlocking trigger device 3 includes: a mounting base B, a pull wire mounting base 26, a triggering mechanism 27, a base 28, an actuator 29, an adjusting screw 30, and a locking nut 31;

[0111] The mounting base B has the same structure as the mounting base A5. The mounting base B is used to unlock the installation of the trigger device 3 on the air transport container pallet 1. It is installed in the middle of the long side frame of the air transport container pallet 1 by high-strength bolts. The mounting base B has a Z-shaped cross section and a T-slot in the middle.

[0112] See appendix Figure 23 The outer surface of the base 28 is machined with a T-shaped structure. The base 28 is installed on the mounting base B through the cooperation of the T-shaped structure and the T-slot, so as to realize quick loading and unloading between the base 28 and the mounting base B.

[0113] A rectangular guide hole 34 is machined in the base 28. The length direction of the rectangular guide hole 34 is set along the length direction of the side of the air transport container pallet 1 where the unlocking trigger device 3 is located, and the rectangular guide hole 34 penetrates two opposite sides of the base 28, so that the two ends of the rectangular guide hole 34 are end A and end B respectively.

[0114] A locking groove 32 is machined on the end face of the rectangular guide hole 34 on the base 28. The bottom of the locking groove 32 communicates with the rectangular guide hole 34, and the cross-sectional shape of the locking groove 32 is exactly the same as the cross-sectional shape of the rectangular guide hole 34. That is, the locking groove 32 can be obtained by rotating a portion of the rectangular guide hole 34 about its center line by 30° to 60°. In this embodiment, the locking groove 32 is obtained by rotating a portion of the rectangular guide hole 34 about its center line by 45°. A hook 35 is also provided on the end face of the rectangular guide hole 34 on the base 28.

[0115] Inside the base 28, a partition is machined on the side closer to end B than end A of the rectangular guide hole 34. A trigger mechanism mounting hole 33 is machined on the partition. The axial direction of the trigger mechanism mounting hole 33 is perpendicular to the length direction of the rectangular guide hole 34. The trigger mechanism mounting hole 33 communicates with the rectangular guide hole 34.

[0116] See appendix Figure 24 The pull wire mounting base 26 is a cylindrical structure with openings at both ends, and the side wall of the pull wire mounting base 26 is machined with a T-shaped opening; the pull wire mounting base 26 is mounted on the end face of the rectangular guide hole 34 on the base 28, and the inner cavity of the pull wire mounting base 26 communicates with the rectangular guide hole 34; the pull wire mounting base 26 is used to install the unlock trigger pull wire 4;

[0117] See appendix Figure 25The triggering mechanism 27 includes: a roller 36, a compression spring 37, a connecting frame 38, and a locking block 39; the connecting frame 38 passes through the triggering mechanism mounting hole 33; the locking block 39 is threadedly installed on the end of the connecting frame 38 located above the partition of the base 28; the roller 36 is installed on the end of the connecting frame 38 located below the partition of the base 28 via a roller bracket; the compression spring 37 is installed outside the connecting frame 38 and located between the roller bracket and the partition of the base 28; when the air transport container pallet 1 is located in the cabin, the roller 36 abuts against the cabin floor, causing the compression spring 37 to be in a compressed state, with one end of the compression spring 37 abutting against the roller bracket and the other end abutting against the lower surface of the partition of the base 28; when the air transport container pallet 1 leaves the cabin, the roller 36 is unrestrained, and the connecting frame 38 and the roller 36 and locking block 39 connected to it move downward as a whole under the restoring force of the compression spring 37;

[0118] See appendix Figure 26 The actuator 29 includes: a slider 41, a tension spring 42, a pull block 43, a pull rope 44, and a pull ring 45 connected in sequence; the cross-sections of the slider 41 and the pull block 43 are both non-circular, that is, the cross-sections are inconsistent when rotated by a certain angle; in this embodiment, the slider 41 and the pull block 43 are both rectangular block structures, as shown in the attached figure. Figure 27 As shown, a T-shaped cable head mounting groove 412 is machined on one side of the slider 41, and the cable head mounting groove 412 passes through the end of the slider 41; a stop groove 411 with the opening facing downward is machined on the other side of the slider 41.

[0119] The actuator 29 is installed in the rectangular guide hole 34 of the base 28 and slides in cooperation with the rectangular guide hole 34. When the air transport container pallet 1 is located in the cabin, one end of the slider 41 passes through end B of the rectangular guide hole 34 and is located in the pull wire mounting seat 26. The pull wire head mounting groove 412 of the slider 41 is opposite to the T-shaped opening on the pull wire mounting seat 26. The stop groove 411 on the slider 41 cooperates with the locking block 39 of the trigger mechanism 27, and the locking block 39 locks the position of the slider 41. The pull block 43 is pulled out of end A of the rectangular guide hole 34 by the pull rope 44, and after the pull block 43 is rotated, it is locked in the locking groove 32, and the locking groove 32 locks the position of the pull block 43. At this time, the tension spring 42 is in a stretched state. The pull rope 44 is installed on the hook 35 through the pull ring 45.

[0120] The unlocking trigger cable 4 is a brake cable, consisting of a steel wire and an outer sheath covering the steel wire; the end of the steel wire at the head of the unlocking trigger cable 4 is provided with a cylindrical connector (and the axis of the cylinder is perpendicular to the axis of the steel wire); the unlocking trigger cable 4 is arranged along the side of the air transport container pallet 1, the tail of the unlocking trigger cable 4 is connected to the cable connector 15 of the traction lock device 2, and the connector at the head of the unlocking trigger cable 4 passes through the T-shaped opening on the cable mounting base 26 and is installed in the cable head mounting groove 412 of the slider 41;

[0121] The adjusting screw 30 has a through hole, the diameter of which is larger than the diameter of the steel wire but smaller than the outer diameter of the outer sheath. Both the adjusting screw 30 and the locking nut 31 have openings on their sides for the steel wire to pass through. The adjusting screw 30 is threaded to the pull wire mounting base 26, serving to adjust the tension of the unlocking trigger pull wire 4. The locking nut 31 is threaded to the adjusting screw 30, serving to fix the position of the adjusting screw 30. The side openings of the adjusting screw 30 and the locking nut 31 are opposite each other. The steel wire at the head of the unlocking trigger pull wire 4 is inserted into the through hole of the adjusting screw 30 through the side openings of the adjusting screw 30 and the locking nut 31. When the steel wire is taut, the locking nut 31 abuts against the end face of the pull wire mounting base 26, and the outer sheath of the unlocking trigger pull wire 4 abuts against the head end face of the adjusting screw 30. When the steel wire is further tightened under the action of the actuator 29, the adjusting screw 30 and the locking nut 31 can achieve relative movement between the steel wire and the outer sheath.

[0122] Furthermore, both the stop groove 411 and the locking block 39 are wedge-shaped structures. In this embodiment, the locking block 39 has a frustum structure.

[0123] The assembly process of the unlocking trigger device 3 is as follows: When it is necessary to install the unlocking trigger cable 4, push the slider 41 in the actuator 29 into the cable mounting seat 26, and then place the connector of the head of the unlocking trigger cable 4 into the cable head mounting groove 412; pull the pull block 43 by the pull ring 45 until the locking block 39 is aligned with the stop groove 411 and the two cooperate; then install the unlocking trigger device 3 on the frame of the air transport container pallet 1; adjust the tightness by adjusting the screw 30, and turn the locking nut 31 to lock the position of the adjusting screw 30; pull the pull ring 45 to move the pull block 43 to the position of the locking groove 32, and turn the pull block 43 to make it in the locking groove 32; wind the pull rope 44 around the hook 35, and hang the pull ring 45 on the hook 35. The installation of the unlocking trigger device 3 is completed.

[0124] Example 4:

[0125] Based on embodiments 1-3 above, this embodiment provides an operation method for an integrated airlift and airdrop pallet system, which is as follows:

[0126] Step 1: Install the towing lock device 2, the unlocking trigger device 3, and the unlocking trigger cable 4 at the corresponding positions on the air transport container pallet 1;

[0127] Step 2: Install the towing parachute to the towing lock device 2, install the main parachute to the air transport container pallet 1, and install the main parachute and guide parachute of the main parachute to the towing lock device 2.

[0128] Step 3: Open the cabin and release the towing parachute. The air transport container pallet 1 is towed out of the cabin. The towing lock device 2 remains locked until the air transport container pallet 1 is completely out of the cabin.

[0129] Step four: the moment the air transport container pallet 1 leaves the hold, the roller 36 of the unlocking trigger device 3 installed on the forward long side of the air transport container pallet 1 loses its restraint. The connecting frame 38 and the roller 36 and locking block 39 connected to it move downward as a whole under the restoring force of the compression spring 37, thereby causing the locking block 39 to separate from the slider 41. The slider 41 loses its restraint and moves to the right under the restoring force of the tension spring 2, thereby pulling the unlocking trigger cable 4 to the right. After the unlocking trigger cable 4 is further tightened, the unlocking trigger cable 4 first pulls the cable rocker arm 18 upward through the cable connector 15. At this time, the protruding structure on the cable rocker arm 18... The locking rocker arm 16 is swung to unlock, triggering the pull cable 4 to continue pulling the pull cable rocker arm 18. The pull cable rocker arm 18 drives the unlocking rocker arm 17 to swing upward. At this time, the locking safety mechanism is opened, thereby unlocking the locking tongue mechanism and releasing the traction connector 7. At this time, the traction parachute connected to the traction ring 24 of the traction connector 7 is disconnected from the air transport container pallet 1. At the same time, the guide ring 21 of the traction connector 7 drags the pull rope of the main parachute and the guide parachute, pulling the main parachute and the guide parachute upward. The main parachute and the guide parachute then open the landing main parachute connected to the air transport container pallet 1 normally. After the landing main parachute opens normally, the air transport container pallet 1 is ensured to descend slowly with a normal attitude.

[0130] Step 5: Air transport container pallet 1 lands on the ground, completing the airdrop.

[0131] In summary, the above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An integrated airlift and airdrop pallet system, characterized in that, include: Air transport container pallets, towing lock devices, unlocking trigger devices, unlocking trigger cables, towing parachutes and main parachutes; The air transport container pallet is used for containerized air transport of goods, and the air transport container pallet is connected to the main parachute, which is used for the smooth descent of the air transport container pallet. The towing lock device is installed in the middle of the towing side frame of the air transport container pallet and is connected to the towing parachute and the main parachute. The towing lock device is used to lock the air transport container pallet on the aircraft before airdrop. During airdrop, the air transport container pallet is pulled out of the cabin by the towing force of the towing parachute. After the air transport container pallet leaves the cabin, it separates from the towing parachute and opens the main parachute at the same time. The unlocking trigger device includes: mounting base B, pull wire mounting base, triggering mechanism, actuator and base; Mounting base B is installed in the middle of the long side frame of the air transport container pallet; The base is mounted on the mounting base B. A rectangular guide hole is machined in the base. The length direction of the rectangular guide hole is set along the length direction of the side of the air transport container pallet where the unlocking trigger device is located. The rectangular guide hole passes through two opposite sides of the base, so that the two ends of the rectangular guide hole are end A and end B, respectively. A locking groove is machined on the end face of the rectangular guide hole on the base. The bottom of the locking groove is connected to the rectangular guide hole, and the cross-sectional shape of the locking groove is exactly the same as the cross-sectional shape of the rectangular guide hole. A hook is also provided on the end face of the rectangular guide hole on the base. A partition plate is machined inside the base, on the side closer to end B than end A of the rectangular guide hole. A trigger mechanism mounting hole is machined on the partition plate. The axial direction of the trigger mechanism mounting hole is perpendicular to the length direction of the rectangular guide hole. The trigger mechanism mounting hole communicates with the rectangular guide hole. The pull-wire mounting base is a cylindrical structure with openings at both ends, and the side wall of the pull-wire mounting base is machined with a T-shaped opening; the pull-wire mounting base is installed on the end face of the rectangular guide hole on the base, and the inner cavity of the pull-wire mounting base communicates with the rectangular guide hole; the pull-wire mounting base is used to install the unlocking trigger pull-wire; The actuator includes: a slider, a tension spring, a pull block, a pull rope, and a pull ring connected in sequence; the slider and the pull block are both rectangular block structures, one side of the slider is machined with a T-shaped pull wire head mounting groove, and the pull wire head mounting groove passes through the end of the slider; the other side of the slider is machined with a stop groove with the opening facing downward. The actuator is installed in the rectangular guide hole of the base and slides in cooperation with the rectangular guide hole; When the air transport container pallet is located inside the cabin, one end of the slider passes through end B of the rectangular guide hole, and this end is located inside the pull cable mounting base. The pull cable head mounting groove of the slider is opposite to the T-shaped opening on the pull cable mounting base. One end of the trigger mechanism passes through the trigger mechanism mounting hole and is locked in the stop groove of the slider to limit the slider's position. The other end of the trigger mechanism abuts against the cabin floor plate. The pull block is pulled out of end A of the rectangular guide hole by the pull rope, and after the pull block is rotated, it is locked in the locking groove, which locks the position of the pull block. At this time, the tension spring is in a stretched state. The pull rope is installed on the hook through the pull ring. The unlocking trigger device is installed in the middle of the non-traction side frame of the air transport container pallet and is connected to the traction lock device via an unlocking trigger cable. The unlocking trigger device is used to control the traction lock device to unlock after the air transport container pallet has completely exited the cabin, causing the traction parachute to detach and simultaneously deploying the main parachute. The triggering mechanism includes a roller, a compression spring, a connecting frame, and a locking block. The connecting frame passes through the triggering mechanism mounting hole, and the locking block is installed at the end of the connecting frame located above the partition plate on the base, engaging with a stop groove on the slider. The locking block achieves the locking of the slider... The position of the block is locked. The roller is installed at the end of the connecting frame located below the partition of the base via the roller bracket. The compression spring is installed outside the connecting frame and between the roller bracket and the partition of the base. When the air transport container pallet is in the cabin, the roller abuts against the cabin floor, causing the compression spring to be in a compressed state. One end of the compression spring abuts against the roller bracket, and the other end abuts against the lower surface of the partition of the base. When the air transport container pallet leaves the cabin, the roller is unrestrained, and the connecting frame and the roller and locking block connected to it move downward as a whole under the restoring force of the compression spring.

2. The integrated airlift and airdrop pallet system as described in claim 1, characterized in that, The traction lock device includes: a mounting base A, a lock body assembly, and a traction connector; The mounting base A is installed in the middle of the long side frame of the air transport container pallet; The top end of the traction connector is connected to the main parachute and the guide parachute of the main parachute, and the bottom end is connected to the traction parachute. The upper surface of one side of the traction connector is machined with an upward-opening unlocking slot. The unlocking slot cooperates with the lock body assembly to realize the quick locking and unlocking of the lock body assembly. The lower surface of the same side of the traction connector is machined with a downward-opening tiger tooth groove. The lock body assembly includes: a bolt mechanism, a locking and safety mechanism, and a lock shell; One side of the lock housing is mounted on the mounting base A, and the other opposite side is provided with a tiger tooth structure. The side end of the traction connector is mounted on the tiger tooth structure of the lock housing, and the tiger tooth groove on the lower surface of the traction connector engages with the tiger tooth structure, which allows the traction connector to slide out smoothly from the lock housing. Both the locking safety mechanism and the locking tongue mechanism are installed inside the lock housing, with the locking tongue mechanism located below the locking safety mechanism. The locking safety mechanism adopts a swing-type structure, and the locking tongue mechanism adopts a four-bar linkage. The locking safety mechanism is connected to the unlocking trigger cable, and the locking tongue mechanism cooperates with the unlocking slot of the traction connector to achieve engagement with the traction connector. When the cable pulls the locking safety mechanism, the locking tongue mechanism is separated from the traction connector in sequence through the locking safety mechanism and the locking tongue mechanism. The traction connector and the traction parachute and the main parachute and guide parachute connected to it detach. When the main parachute and guide parachute detach, the main parachute is pulled to open.

3. The integrated airlift and airdrop pallet system as described in claim 2, characterized in that, The traction joint includes: a guide ring, a safety buckle, and a traction ring; The traction ring has an L-shaped structure; a locking hook is machined at the top of the vertical part of the L-shaped structure, the bottom of the guide ring is installed in the locking hook, and a round hole is machined at the top of the guide ring for connecting with the main parachute and the guide parachute of the main parachute; the opening of the locking hook is closed by a rotatable safety buckle; the safety buckle is installed on the traction ring by a pin E, and the safety buckle can rotate around the axis of the pin E. The bottom of the vertical part of the L-shaped structure is machined with a round mounting hole for connecting to a towing parachute; The upper surface of the horizontal portion of the L-shaped structure is machined with an upward-opening unlocking slot, which cooperates with the lock body assembly to enable quick locking and unlocking of the lock body assembly; the lower surface of the horizontal portion of the L-shaped structure is machined with a downward-opening tiger tooth groove.

4. An integrated airlift and airdrop pallet system as described in claim 2 or 3, characterized in that, The locking mechanism includes: a pull-cord connector, a locking rocker arm, an unlocking rocker arm, and a pull-cord rocker arm; One end of the unlocking rocker arm is pinned to the lock housing via a pin A; the unlocking rocker arm can rotate around the axis of the pin A; the other end of the unlocking rocker arm is provided with a downward-facing triangular prism-shaped limiting boss; a guide rod is fixedly connected to the middle of the unlocking rocker arm, and the guide rod is slidably engaged with an arc-shaped guide groove A machined on the lock housing, the arc of which is centered on the axis of the pin A; One end of the locking rocker arm is bolted to the lock housing, and the locking rocker arm can rotate around the axis of the bolt. One end face of the other end of the locking rocker arm is provided with a guide cylinder, which slides in fit with an arc-shaped guide groove B machined on the lock housing. The arc of the arc-shaped guide groove B is centered on the axis of the bolt. The other end face of the other end of the locking rocker arm is machined with an open slot, which can cooperate with the guide rod of the unlocking rocker arm. When the guide rod of the unlocking rocker arm is located in the open slot, the unlocking rocker arm is locked. When the guide rod of the unlocking rocker arm is not located in the open slot, the unlocking rocker arm is unlocked. The pull-cord rocker arm has a double-layer side plate structure, with each side plate being a V-shaped structure and the included angle of the V-shape being an obtuse angle. One side plate of the pull-cord rocker arm is located between the unlocking rocker arm and the locking rocker arm, while the other side plate of the pull-cord rocker arm is located between the unlocking rocker arm and the lock housing. One end of the pull-cord rocker arm is pinned to the end of the unlocking rocker arm via pin B, and the pull-cord rocker arm can rotate around the axis of pin B. The other end of the pull-cord rocker arm is pinned to the pull-cord connector, and when the locking safety mechanism is not in operation, the pull-cord connector is supported in the mounting groove provided on the upper surface of the unlocking rocker arm. A limiting cylinder is provided in the middle of the pull-cord rocker arm, and the limiting cylinder abuts against a limiting protrusion provided on the side of the middle part of the locking rocker arm.

5. The integrated airlift and airdrop pallet system as described in claim 4, characterized in that, Torsion springs are provided at pin A of the unlocking rocker arm, bolt of the locking rocker arm, pin B of the pull-wire rocker arm, and pin joint between the pull-wire rocker arm and the pull-wire connector for resetting the movement of each rocker arm.

6. The integrated airlift and airdrop pallet system as described in claim 4, characterized in that, The locking tongue mechanism includes: a crank, a connecting rod, a locking tongue rocker arm, and a limiting roller; One end of the latch rocker arm is pinned to the lock housing via a pin C; the latch rocker arm can rotate around the axis of the pin C; the other end of the latch rocker arm is provided with a downward trapezoidal limiting boss, which can cooperate with the unlocking slot of the traction ring at the tiger tooth structure of the lock housing. When the trapezoidal limiting boss is located in the unlocking slot, the traction connector is engaged and locked; when the trapezoidal limiting boss is not located in the unlocking slot, the traction connector is released; the middle part of the latch rocker arm is provided with an upward-opening triangular prism-shaped limiting groove, which can cooperate with the triangular prism-shaped limiting boss of the unlocking rocker arm. When the triangular prism-shaped limiting boss of the unlocking rocker arm is located in the triangular prism-shaped limiting groove, the latch rocker arm is locked; when the triangular prism-shaped limiting boss of the unlocking rocker arm is not located in the triangular prism-shaped limiting groove, the latch rocker arm is unlocked, thereby allowing the traction connector to be released. One end of the crank is pinned to the lock housing via a pin D; the crank can rotate around the axis of the pin D. One end of the connecting rod is pinned to the middle of the locking tongue rocker arm, and the other end of the connecting rod is pinned to the other end of the crank; and a limiting roller is installed on the crank at the connection end with the connecting rod, and the limiting roller is in rolling engagement with the upper surface of the locking tongue rocker arm.

7. The integrated airlift and airdrop pallet system as described in claim 1, characterized in that, The unlocking trigger device also includes an adjusting screw and a locking nut; The unlocking trigger cable is a brake cable, consisting of a steel wire and an outer sheath covering the steel wire. The end of the steel wire at the head of the unlocking trigger cable has a cylindrical connector, and the axis of the cylinder is perpendicular to the axis of the steel wire. The unlocking trigger cable is arranged along the side of the air transport container pallet. The tail of the unlocking trigger cable is connected to the cable connector of the traction lock device. The connector at the head of the unlocking trigger cable passes through the T-shaped opening on the cable mounting base and is installed in the cable head mounting groove of the slider. The adjusting screw has a through hole, the diameter of which is larger than the diameter of the steel wire but smaller than the outer diameter of the outer sheath. Both the adjusting screw and the locking nut have openings on their sides for the steel wire to pass through. The adjusting screw is threaded to the pull wire mounting base, and the side openings of the adjusting screw and the locking nut are opposite each other. The steel wire that unlocks and triggers the pull wire head is inserted into the through hole of the adjusting screw through the side openings of the adjusting screw and the locking nut. When the wire is taut, the locking nut abuts against the end face of the wire mounting base, and the outer sheath of the unlocking trigger wire head abuts against the head end face of the adjusting screw. When the wire is further taut under the action of the actuator, the adjusting screw and the locking nut can achieve relative movement between the wire and the outer sheath.

8. An operation method for an integrated airlift and airdrop pallet system, based on the integrated airlift and airdrop pallet system according to any one of claims 1-7, characterized in that, The method is as follows: Step 1: Install the towing lock device, unlocking trigger device, and unlocking trigger cable at the corresponding positions on the air transport container pallet; Step 2: Install the towing parachute to the towing lock device, install the main parachute to the air transport container pallet, and install the main parachute and guide parachute of the main parachute to the towing lock device. Step 3: Open the cabin and release the towing parachute. The air transport container pallet is towed out of the cabin. The towing lock device remains locked until the air transport container pallet is completely out of the cabin. Step 4: The moment the air transport container pallet leaves the cabin, the unlock trigger device is activated, the unlock trigger cable is pulled, the unlock trigger cable is then pulled, and the towing lock device is activated. The towing lock device unlocks and releases the towing parachute and the main parachute and pilot parachute connected to the main parachute. The towing parachute is disconnected from the air transport container pallet, and the main parachute and pilot parachute then open the main parachute connected to the air transport container pallet. Step 5: The air transport container pallet lands on the ground, completing the airdrop.

Images