A new mechanical automatic parachute release device

Abstract

The present application belongs to the field of aerial delivery technology, and discloses a novel mechanical automatic release device of parachute, wherein a shell is installed on a lock body, a locking structure and a safety timing structure are fixed on the lock body. The locking structure comprises a locking hook and a release hook, the locking hook is installed in the lock body through a pin shaft and can rotate around the pin shaft, and cooperates with the upper end of the lock body to form a locking or open state. The release hook is installed in the lock body through a pin shaft and can rotate around the pin shaft, and cooperates with the locking hook through rotation to limit the locking hook. The safety timing device is adopted to ensure that the locking structure remains closed when the device does not reach a stable operating state at the beginning of delivery, and is not disturbed by external factors, thereby ensuring the safety of the load; when the device lands, the cargo load disappears, and the spring drives the shell to reset, at this time, only the friction between the release hook and the inner wall of the shell needs to be overcome, thereby ensuring that the lock is opened immediately after landing, and the parachute and the cargo are separated in time.

Description

Technical Field

[0001] This invention belongs to the field of airdrop technology, and in particular relates to a novel mechanical automatic release device for parachutes. Background Technology

[0002] Currently, cargo airdrop systems are playing an increasingly important role in rapid battlefield maneuver, logistical support, and earthquake relief. A cargo airdrop system mainly consists of a parachute system and the suspended cargo. An automatic release mechanism, as a crucial component connecting the two, rapidly separates the cargo and parachute upon landing to prevent the parachute system from overturning the cargo platform or dragging it along the ground; however, it must also maintain a tight connection between the cargo platform and the parachute in the air to prevent damage to the cargo due to separation. Therefore, the performance of the automatic release mechanism directly affects the landing process and safety of the cargo airdrop system.

[0003] Existing technology CN 207433814U uses a four-stage lever device for locking, triggering a delayed safety device by igniting a pyrotechnic device to cut the shearing pin; CN11080328 uses a ratchet device for locking, relying on spring energy storage for unlocking, and achieving reliable aerial connection through a constant-force shearing pin, requiring the selection of different stress shearing pins based on different load weights. In summary, existing domestic automatic disengagement devices can be categorized into explosive type, direct-drive type, lever-driven type, and attitude-skew type based on their unlocking methods. Explosive-type parachutes separate from their locks by detonating explosives, but they cannot be easily reused and require measures to prevent failure. Direct-drive parachutes rely on energy storage devices to generate a release force at the moment of landing, and this release force is directly related to the load weight, so setting the release force too high or too low will affect the separation of the parachute and cargo. Lever-driven parachutes reduce the impact of the size and changes of the cargo load on the release force through levers and other mechanisms, but the mechanical structure of the device is relatively complex. Attitude-skewed parachutes utilize the inertial force of the parachute in the horizontal direction and the ground wind, and may fail when the ground wind speed is too low or too high.

[0004] Based on the above analysis, the problems and shortcomings of the existing technology are as follows:

[0005] (1) Pyrotechnics are generally for single use and have high storage requirements. The detachment device for pyrotechnics is complex and has high management costs.

[0006] (2) Load weight and environmental factors can affect the release force when the umbrella separates from the object, which may cause the device to fail under extreme conditions. Summary of the Invention

[0007] To address the problems existing in the prior art, this invention provides a novel mechanical automatic release device for parachutes.

[0008] This invention is implemented as follows: a novel mechanical automatic parachute detachment device includes:

[0009] Lock body; outer shell; locking structure and safety timing mechanism;

[0010] The lock body serves as the mounting carrier for other components. The outer shell is mounted on the lock body, and the locking structure and the safety timing mechanism are fixed to the lock body.

[0011] Furthermore, the lock structure includes a lock hook and a release hook. The lock hook is installed in the lock body via a pin and can rotate around the pin, cooperating with the upper end of the lock body to form a locked or unlocked state. The release hook is installed in the lock body via a pin and can rotate around the pin. The release hook cooperates with the lock hook by rotating, and plays a limiting role in the lock hook.

[0012] Furthermore, the safety timing structure includes a safety stop block component, a locking tongue component, and a timer. The safety stop block component and the timer rotor are fixedly connected. Different grooves on the safety stop block correspond to different timing limits. The locking tongue component is installed in the housing via a pin. The locking tongue component cooperates with the safety stop block component to perform a limiting function.

[0013] Furthermore, the outer shell cooperates with the lock body and can slide relative to the lock body.

[0014] Based on the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solution to be protected by this invention are as follows:

[0015] First, addressing the technical problems existing in the prior art and the difficulty in solving them, this paper closely analyzes, in conjunction with the technical solution to be protected by this invention and the results and data obtained during the research and development process, how the technical solution of this invention solves the technical problems, and the inventive technical effects brought about by solving these problems. The specific description is as follows:

[0016] The embodiments of the present invention employ a purely mechanical safety timing device to ensure that the locking structure remains closed when the device has not reached a stable operating state at the start of deployment, without relying on pyrotechnics to release the safety, thus reducing product costs while ensuring load-bearing safety.

[0017] Second, considering the technical solution as a whole or from a product perspective, the technical effects and advantages of the technical solution to be protected by this invention are specifically described as follows:

[0018] The present invention has a simple structure and obvious effect. When the device lands, the cargo load disappears and the spring drives the outer shell to return to its original position. At this time, it is only necessary to overcome the friction between the release hook and the inner wall of the outer shell, so as to ensure that the lock is unlocked immediately after landing and the umbrella and cargo are separated in time.

[0019] Third, as supplementary evidence of the inventive step of the claims of this invention, it is also reflected in the following important aspects:

[0020] (1) The technical solution of this invention fills a technical gap in the industry both domestically and internationally:

[0021] This invention uses a locking tongue component to pre-lock the timer. After the parachute is fully opened, the locking tongue component disengages under the action of tension, ensuring that the safety timing device starts counting down when the airdrop system is operating normally. This avoids the safety device from being prematurely released and the device from failure due to unstable environmental factors such as turbulence at the start of the airdrop, which could cause the parachute to not be fully opened.

[0022] (2) Whether the technical solution of the present invention solves the technical problem that people have been eager to solve but have never been able to succeed: The present invention is a pure mechanical structure, which is simple to implement, is not affected by external factors, and ensures the stable separation of the objects. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the appearance of the novel mechanical automatic release device for parachutes provided in an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the reset spring structure provided in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the locked state provided in an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the operating state provided in an embodiment of the present invention;

[0027] Figure 5 This is a reset schematic diagram provided in an embodiment of the present invention;

[0028] In the diagram: 101, outer casing; 102, timer; 103, return spring; 104, lock body; 201, release hook; 202, lock hook; 203, safety stop part; 204, lock tongue part. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] To enable those skilled in the art to fully understand how the present invention is specifically implemented, this section provides an explanatory description of the embodiments that expand upon the technical solutions of the claims.

[0031] like Figures 1-5As shown, the novel mechanical automatic release device for parachutes provided in this embodiment of the invention includes: a shell 101, a timer 102, a return spring 103, a lock body 104, a release hook 201, a lock hook 202, a safety stop block part 203, and a locking tongue part 204.

[0032] The lock body 104 serves as the mounting carrier for other components. The outer shell 101, the locking structure, and the safety timing structure are all mounted on the lock body 104 and are interconnected through the lock body 104.

[0033] The locking structure includes a locking hook 202 and a release hook 201. The locking hook 202 is installed inside the lock body 104 via a pin and can rotate around the pin, engaging with the upper end of the lock body 104 to form a locked or unlocked state. The release hook 201 is installed inside the lock body 104 via a pin and can rotate around the pin. The release hook 201 engages with the locking hook 202 through rotation, limiting the locking hook 202. When using the device, pressing the protruding part of the locking hook 202 causes the lower end of the locking hook 202 to push the release hook 201 to rotate. The release hook 201 is in a vertical state and can slide along the inner wall of the outer shell 101. The locking hook 202 and the lock body 104 form a closed structure, and the device is locked.

[0034] The safety timing structure includes a safety stop component 203, a locking tongue component 204, and a timer 102. The safety stop component 203 and the rotor of the timer 102 are fixedly connected. Different grooves on the safety stop correspond to different timing limits. The locking tongue component 204 is mounted inside the housing 101 via a pin. The locking tongue component 204 cooperates with the safety stop component 203 to provide a limiting function. When the device initially runs, the timer 102 winds up, and the safety stop component 203 rotates accordingly until the lower end of the locking tongue component 204 inserts into the groove of the safety stop component 203 corresponding to the timing limit, preventing the timer 102 from starting. The safety stop component 203 also limits the release hook 201, keeping it in a vertical position. When a heavy load is applied, the locking tongue component 204 moves upward with the housing, the lower end of the locking tongue separates from the safety stop component 203, and the locking tongue component 204 resets under the action of a spring, starting the timer 102.

[0035] The outer casing 101 cooperates with the lock body 104 and can slide relative to the lock body 104. During device operation, after the timer 102 finishes counting, the device stabilizes, the outer casing 101 remains in an upward sliding state, the inner wall of the outer casing 101 restricts the release hook 201 to reset, and the release hook 201 restricts the lock hook 202 to reset, keeping the device locked during operation. After the device stops operating, the load decreases, and the outer casing 101 automatically resets under the force of the return spring 103. The outer casing 101 no longer restricts the release hook 201, and the release hook 201 resets under the action of the spring. The lock hook 202 also resets under the action of the spring, and the locking structure opens.

[0036] The working principle of this invention is as follows: A heavy object is installed, and the device locks. The parachute's connecting device is fitted onto the locking hook 202, and the through hole at the bottom of the outer shell is used to hang cargo. Pushing the locking hook 202 causes the release hook 201 to rotate. Pressing the protruding part of the locking hook 202 causes the lower end of the locking hook 202 to rotate the release hook 201 until the upper end of the locking hook 202 is parallel to the upper end of the lock body 104, closing the locking structure. Figure 3 As shown.

[0037] Activate the safety device; wind the mainspring to the corresponding mark according to the required time, the safety stop part 203 rotates, and the lower end of the locking tongue part 204 inserts into the corresponding groove of the safety stop part 203. The locking tongue part 204 limits the safety stop part 203, and the safety stop part 203 limits the release hook 201, keeping the locking structure closed when the device is not in operation.

[0038] The device is operating; such as Figure 4 As shown, when the device starts operating, the heavy load causes the outer shell to slide down relative to the lock body 104, separating the latch part 204 from the safety stop device. Under the action of spring tension, the latch part 204 resets, and the timer 102 starts. When the timer 102 finishes counting, the safety stop part 203 resets. At this time, the device operates stably, and the inner wall of the outer shell restricts the rotation of the release hook 201. The release hook 201 limits the locking hook 202, preventing the locking structure from opening.

[0039] Reset; when goods land, such as Figure 5 As shown, the compression spring rebounds, and under the action of the spring's restoring force, the outer shell moves upward relative to the lock body 104. The release hook 201 resets under the spring force and no longer restricts the lock hook 202. The spring's restoring force causes the upper end of the lock hook 202 to separate from the top of the lock body 104, the locking structure opens, and the parachute connecting device separates from the lock hook 202.

[0040] To demonstrate the inventiveness and technical value of the technical solution of this invention, this section provides specific product or related technology application examples of the technical solution claimed.

[0041] The embodiments of this invention are applied to cargo airdrops.

[0042] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the scope of the technology disclosed in the present invention, and within the spirit and principles of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A mechanical automatic release device for parachutes, characterized in that, The parachute mechanical automatic release device includes: Lock body; outer shell; locking structure and safety timing mechanism; The lock body serves as the mounting carrier for other components; the outer shell is mounted on the lock body; and the locking structure and the safety timing mechanism are fixed to the lock body. The locking structure includes a locking hook and a release hook. The locking hook is installed in the lock body via a pin and can rotate around the pin, cooperating with the upper end of the lock body to form a locked or unlocked state. The release hook is installed in the lock body via a pin and can rotate around the pin. The release hook cooperates with the locking hook by rotation, and plays a limiting role in locking the locking hook. The safety timing mechanism includes a safety stop block, a locking tongue, and a timer. The safety stop block and the timer rotor are fixedly connected. Different grooves on the safety stop block correspond to different timing limits. The locking tongue is installed in the housing via a pin. During device operation, after the timer expires, the device stabilizes, the outer shell remains in an upward sliding state, the release hook on the inner wall of the outer shell resets, and the release hook lock hook resets, keeping the device locked during operation. After the device stops operating, the load decreases, and the outer shell automatically resets under the action of the compression spring. The outer shell no longer restricts the release hook, and the release hook resets under the action of the spring. The lock hook resets under the action of the spring, and the locking structure opens. Install the heavy object and lock the device; put the parachute connecting device on the lock hook, and use the through hole at the bottom of the outer shell to hang the cargo; push the lock hook to rotate the release hook; press the protruding part of the lock hook, and the lower end of the lock hook will rotate the release hook until the upper end of the lock hook is parallel to the upper end of the lock body, and the locking structure is closed. Start the safety timing mechanism; wind the mainspring to the corresponding mark according to the required time, the safety stop part rotates, and the lower end of the lock tongue part is inserted into the groove of the corresponding safety stop part; the lock tongue part limits the safety stop part, and the safety stop part limits the release hook, keeping the locking structure closed when the device is not in operation; When the device starts to operate, the heavy load causes the outer shell to slide down relative to the lock body, the latch part separates from the safety stop device, the latch part resets under the action of spring tension, and the timer starts; when the timer ends, the safety stop part resets, the device operates stably, the inner wall of the outer shell restricts the rotation of the release hook, and the release hook limits the lock hook to prevent the locking structure from opening. Reset; when the cargo lands, the compression spring rebounds, and under the action of the spring's restoring force, the outer shell moves upward relative to the lock body. The release hook resets under the spring force and no longer restricts the lock hook. The spring's restoring force causes the upper end of the lock hook to separate from the top of the lock body, the locking structure opens, and the parachute connecting device separates from the lock hook.

2. The parachute mechanical automatic release device as described in claim 1, characterized in that, The outer shell cooperates with the lock body and can slide relative to the lock body.

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