Automatic parachute releasing device for air-drop type unmanned underwater vehicle entering water

Abstract

The invention relates to an automatic parachute releasing device for an air-drop type unmanned underwater vehicle entering water, and is applied to the technical field of marine equipment. The device is composed of a chuck, an elastic ejector piece, a plug pin, a clamping and locking component, a clamping pin component and an energy storage driving unit. The plug pin is separated from the chuck through the elastic force of the elastic ejector piece, the clamping pin component and the clamping and locking component form a locking state and an unlocking state through the pin shaft, and it is ensured that the plug pin is kept and released before and after entering water. The energy storage driving unit comprises a sliding rod, an energy storage spring and a water-soluble clamping and blocking component, the energy storage spring provides power from a locking position to an unlocking position for the clamping pin component, the water-soluble clamping and blocking component controls the sliding rod to move, and the triggering device is used for releasing the parachute. Through the self-locking design of the mechanical connecting rod and the automatic triggering of the water-soluble material, the device has the advantages of low cost, simple structure, high reliability, good stability and the like, is easy to produce in batches, and can effectively improve the stability and the safety of the unmanned underwater vehicle in the water entering process.

Description

Technical Field

[0001] The invention belongs to the technical field of marine equipment, and in particular relates to an automatic parachute-dropping device for an air-dropped unmanned underwater vehicle entering water. Background Art

[0002] An airdropped unmanned underwater vehicle is a device that is dropped from the air and uses a parachute to slow down its descent speed. It is widely used in military and civilian fields. When the unmanned underwater vehicle enters the water, in order to ensure that it can successfully perform its mission, it must be separated from the parachute bag, which requires an automatic parachute release device. The design of the airdrop parachute release structure needs to solve two key problems: first, the device must have a self-locking function, because when it is deployed at high altitude, the opening of the parachute will generate a huge load at the parachute release structure, and only the self-locking function can ensure the safety of the equipment; second, after entering the water, the device must automatically release the parachute, and can quickly and reliably separate the parachute bag from the underwater vehicle, so that the underwater vehicle can carry out underwater missions normally.

[0003] However, most of the current automatic parachute removal devices used for air-dropped submersibles have many shortcomings and deficiencies. First, most of these devices rely on water immersion sensors and circuit drives. Although they can achieve automatic parachute removal, they are relatively expensive. Secondly, due to the complex working environment of the submersible, the parachute removal device must have excellent waterproof and pressure-resistant properties, which makes the structural design relatively complex and further increases the manufacturing cost. In addition, the addition of the device will increase the weight of the submersible, weaken its load capacity, and limit the overall performance of the submersible. In terms of operation, the existing parachute removal device requires the user to have rich professional skills and must undergo systematic training to ensure its correct use, which reduces the adaptability of the device in mass production and large-scale applications. Therefore, the automatic parachute removal device of the prior art needs to be further optimized in terms of cost, structural complexity, and ease of operation. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides an automatic parachute-removing device for an air-dropped unmanned submersible, which is intended to solve the self-locking safety problem of an air-dropped unmanned submersible when deployed at high altitude and the problem of automatically and reliably separating the parachute bag from the submersible after entering the water.

[0005] The present invention is implemented as follows: an automatic parachute-removing device for an air-dropped unmanned submersible entering water, characterized in that it includes a chuck, an elastic top piece, a latch, a locking component, a latch component, and an energy storage drive unit; the latch forms a plug-in pin component that can be detached from the chuck, the elastic top piece is installed on the chuck and applies an elastic force to the latch to cause it to detach, the locking component is installed on the chuck, and the latch component is installed on the latch through a pin shaft, and the latch component swings around the pin shaft to form a locking position that is engaged with the locking component and forms a stop for the latch to detach from the chuck, and an unlocking position that is detached from the locking component and releases the stop for the latch to detach from the chuck.

[0006] The energy storage drive unit is installed on the latch, and includes a sliding rod, an energy storage spring and a water-soluble blocking component. The energy storage spring is connected to the pin component through the sliding rod. The energy storage spring applies elastic force to the pin component to rotate from a locking position to an unlocking position. The water-soluble blocking component is installed on the latch, and the water-soluble blocking component forms a pin that prevents the sliding rod from moving.

[0007] In the above technical solution, preferably, the locking parts are symmetrically arranged on both sides of the pin, the pin parts are symmetrically installed on the pin, the sliding bar is arranged between the two pin parts and moves along the symmetrical midline of the two pin parts, and the energy storage spring applies elastic force to the sliding bar to make it move.

[0008] In the above technical solution, preferably, the energy storage drive unit includes an energy storage rocker arm and a connecting rod, one end of the energy storage rocker arm is installed on the latch pin through a pin shaft, the other end of the energy storage rocker arm is connected to the connecting rod through a pin shaft, and the other end of the connecting rod is connected to the sliding rod through a pin shaft; when the bayonet pin component is in the locking position, the sliding rod, connecting rod and energy storage rocker arm are connected in sequence to form a linear connecting rod; the energy storage spring applies a swinging elastic force to the energy storage rocker arm.

[0009] In the above technical solution, preferably, the latch component is a latch rod, which is installed on the latch pin in a lever manner through a pin shaft, and the outer end of the latch rod is used to latch the locking component, and the inner end of the latch rod is connected to the end of the sliding rod through a pull rod, and the two ends of the pull rod are respectively connected to the latch rod and the sliding rod through a pin shaft, and when the latch component is in the locked position, the two left-right symmetrical pull rods are located in a straight line.

[0010] In the above technical solution, preferably, the locking component is a limit rod, which is installed on the chuck in a lever manner through a pin shaft, and the inner end of the limit rod is used to clamp the lock rod, and the outer end of the limit rod is connected to the chuck through an elastic member, and the elastic member applies elastic force to the limit rod to make the inner end of the limit rod press against the side of the pin.

[0011] In the above technical solution, preferably, the connecting rod is provided with a bayonet, and the water-soluble blocking component is provided with a stopper portion, and when the bayonet component is in a locked position, the stopper portion of the water-soluble blocking component is engaged with the bayonet portion of the connecting rod.

[0012] In the above technical solution, preferably, the latch is provided with left-right symmetrical limit plates, a slideway for assembling the slide rod is formed between the two limit plates, the slide rod is installed in the slideway and moves along the slideway; the chuck is provided with left-right symmetrical limit blocks, a slot for inserting the latch is formed between the two limit blocks, the latch is installed in the slot and moves along the slot.

[0013] In the above technical solution, preferably, the chuck is provided with a parachute bag connecting hole for installing the parachute bag, and the latch is provided with a connecting hole for connecting the submersible.

[0014] In the above technical solution, preferably, the elastic top piece includes an umbrella-dropping spring and a top block, the top block is installed on the chuck through a linear slide groove, the umbrella-dropping spring is arranged in the linear slide groove and applies elastic force to the top block, and the top block presses the pin.

[0015] In the above technical solution, preferably, the latch is provided with a positioning hole for embedding the water-soluble blocking component, and the connecting rod is provided with a water through hole connected to the bayonet of the connecting rod.

[0016] The automatic parachute removal device for air-dropped unmanned submersibles entering water proposed in this application has many advantages and significant effects. First, the device uses the state change of the mechanical connecting rod to adjust the force of the parachute removal device, which can effectively realize the self-locking function. Such a design ensures that during the high-altitude deployment process, even if the parachute bag is subjected to a large instantaneous load, the device can remain stable, thereby ensuring the safety and reliability of the submersible equipment. Secondly, the device uses water-soluble materials to control the start state of the parachute removal. When the unmanned submersible enters the water, the water-soluble materials quickly self-dissolve, thereby triggering the crank slider mechanism to achieve automatic parachute removal. This design cleverly utilizes the characteristics of water, avoids complex circuits and sensors, reduces manufacturing and maintenance costs, and also reduces waterproof and pressure resistance requirements, improving the adaptability and simplicity of the device.

[0017] In addition, the mechanical links of the device are preferentially designed as a slider multi-link mechanical structure, which has excellent self-locking function in mechanics and significantly improves the stability of the parachute bag when it is not unfurled. The multi-link mechanical structure not only improves the overall safety and reliability, but also enhances the anti-interference ability of the device in complex environments, ensuring that the connection between the parachute bag and the submersible will not be accidentally separated during the aerial deployment phase. Through these design optimizations, the device achieves low-cost and effective automatic parachute unfurling operation when entering the water, reduces dependence on electric drive and complex sensors, greatly simplifies the operation process, and makes it easier to mass produce and widely use. Overall, this automatic parachute unfurling device is not only cost-effective, but also provides stable and reliable parachute unfurling effects under different usage environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 1. It is a schematic structural diagram of the automatic parachute-dropping device provided in an embodiment of the present invention in a non-dropped parachute state;

[0019] Figure 2 2 is a schematic diagram of the structure of the automatic parachute disengaging device provided in an embodiment of the present invention in the disengaged state;

[0020] Figure 3 It is a schematic diagram of the chuck structure of the automatic parachute removing device provided in an embodiment of the present invention;

[0021] Figure 4 2 is a schematic diagram of the latch structure of the automatic parachute release device provided in an embodiment of the present invention;

[0022] Figure 5 is a schematic diagram of the top block structure of the automatic parachute removing device provided in an embodiment of the present invention;

[0023] Figure 6 is a schematic structural diagram of a water-soluble blocking component provided by an embodiment of the present invention;

[0024] Figure 7 is a schematic structural diagram of a connecting rod provided by an embodiment of the present invention;

[0025] Figure 8 is a schematic structural diagram of an energy storage swing rod provided in an embodiment of the present invention;

[0026] Fig. 9 It is a schematic diagram of the application of the parachute removing device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] In order to solve the self-locking safety problem of air-dropped unmanned submersibles when deployed at high altitudes and the problem of automatically separating the parachute bag from the submersible after entering the water, the present invention provides an automatic parachute release device for air-dropped unmanned submersibles entering the water. The automatic parachute release device for air-dropped unmanned submersibles entering the water is triggered by a mechanical connecting rod self-locking design and water-soluble materials, and has the advantages of low cost, simple structure, high reliability, good stability and easy mass production. In order to further illustrate the structure of the present invention, the detailed description is as follows in conjunction with the accompanying drawings:

[0029] See also Figure 1 , Figure 2 and Fig. 9 A device for automatically removing a parachute when an air-dropped unmanned submersible enters water comprises a chuck 1, an elastic top member, a latch 2, a locking component 3, a latch component 4, and an energy storage drive unit.

[0030] The chuck is a component used to connect the parachute bag in the device, and the latch is a component used to connect the unmanned submersible. The chuck is provided with a parachute bag connection hole for installing the parachute bag, and the latch is provided with a connection hole for connecting the submersible. The two connection holes are located at both ends of the device.

[0031] The latch forms a latch pin that can be detached from the chuck. In this embodiment, specifically, the chuck is provided with left-right symmetrical limit blocks 5, and a slot for inserting the latch is formed between the two limit blocks. The latch is installed in the slot and moves along the slot. The chuck and the latch are both plate-shaped components, and the latch moves outward along the slot and finally detaches from the chuck.

[0032] The elastic top piece is installed on the chuck and exerts an elastic force on the latch to disengage it. The elastic top piece is an energy storage component that pushes the latch out of the slot. It provides elastic force for the latch to quickly disengage from the chuck when it is unlocked. The elastic force direction of the elastic top piece is parallel to the axial direction of the slot. In this embodiment, the elastic top piece includes an ejection spring 6 and an ejector block 7. The ejector block is installed on the chuck through a linear slide. The ejection spring is arranged in the linear slide and exerts an elastic force on the ejector block, so that the ejector block presses the latch. For details, please refer to Figure 3 and Figure 5 A linear track 1-1 parallel to the axis of the latch is provided on the chuck, and the linear track is a bilaterally symmetrical groove track. The top block is a movable block component mounted on the chuck through the linear track, and forms a linear movable component under the restriction of the linear track. One end of the stripping spring presses the top block, and the other end of the stripping spring presses the supporting portion formed on the chuck. The compressed stripping spring stores energy and transfers the energy to the latch through elastic force after the latch is unlocked.

[0033] The locking component is mounted on the chuck, and the latch component is mounted on the latch through a pin shaft. The latch component swings around the pin shaft to form a locked position that is engaged with the locking component and forms a stop for the latch to be separated from the chuck, and an unlocked position that is separated from the locking component and releases the stop for the latch to be separated from the chuck. The locked position and unlocked position described here are two position states of the latch component, which are switched by rotating around the pin shaft. In the locked position, the latch is locked by the stop relationship between the latch component and the locking component. In the unlocked position, the locking relationship between the latch component and the locking component is released, and the restriction relationship between the latch and the chuck is released, and the two are separated to realize the parachute release of the unmanned underwater vehicle.

[0034] After the air-dropped unmanned submersible enters the water, the driving component that drives the latch component to switch from the locked position to the unlocked position is an energy storage drive unit. The energy storage drive unit is installed on the latch. The energy storage drive unit includes a slide bar 8, an energy storage spring 9, a water-soluble blocking component 10, an energy storage rocker arm 11, a connecting rod 12 and a pull rod 13.

[0035] The energy storage spring is connected to the bayonet component through a slide bar. The energy storage spring applies elastic force to the bayonet component to rotate from the locking position to the unlocking position. The water-soluble blocking component is installed on the latch pin, and the water-soluble blocking component forms a pin that prevents the slide bar from moving. That is, the energy storage spring is a component that provides energy for the energy storage drive unit to drive the bayonet component to change its position, and the water-soluble blocking component is a component that limits the release of the elastic force of the energy storage spring. Only after entering the water, it can rely on its own water-soluble characteristics to release the restriction on the release of energy of the energy storage spring, so that the energy storage drive unit can drive the bayonet component after the device enters the water.

[0036] In this embodiment, specifically, locking components are symmetrically arranged on both sides of the latch, and latch components are symmetrically installed on the latch. The slide bar is arranged between the two latch components and moves along the symmetrical midline of the two latch components, and the energy storage spring applies elastic force to the slide bar to make it move.

[0037] One end of the energy storage swing rod is installed on the latch through a pin shaft, the other end of the energy storage swing rod is connected to the connecting rod through a pin shaft, and the other end of the connecting rod is connected to the sliding rod through a pin shaft. When the bayonet pin component is in the locking position, the sliding rod, the connecting rod and the energy storage swing rod are connected in sequence to form a straight connecting rod. The bayonet pin component is a clamping rod, which is installed on the latch pin in a lever manner through a pin shaft. The outer end of the clamping rod is used to clamp the locking component, and the inner end of the clamping rod is connected to the end of the sliding rod through a pull rod. The two ends of the pull rod are respectively connected to the clamping rod and the sliding rod through a pin shaft. When the bayonet pin component is in the locking position, the two symmetrical pull rods are located in a straight line. The pull rod on a straight line and the sliding rod, the connecting rod and the energy storage swing rod on a straight line form a horizontal and vertical bidirectional support rod self-locking structure. Under the condition that the component itself is not subjected to torsion force, it is difficult to change its shape through the driving force in the direction of the bayonet pin component, thereby exerting a good self-locking effect.

[0038] See also Figure 8 The energy storage spring is used as an energy storage component to apply a torsional force to the energy storage swing rod, and the energy storage spring applies a swinging elastic force to the energy storage swing rod. In this embodiment, specifically, the energy storage spring is a torsion spring, which is mounted on the hinge pin shaft of the energy storage swing rod and the latch. The inner side of the energy storage swing rod is processed to form a groove for mounting the torsion spring and a torsion spring force-bearing part 11-1 combined with the end of the torsion spring.

[0039] See also Figure 6 and Figure 7 The connecting rod is provided with a bayonet 12-1, and the water-soluble blocking component is provided with a stopper 10-1. When the bayonet component is in the locking position, the stopper of the water-soluble blocking component is engaged with the bayonet of the connecting rod. Figure 4 The latch is provided with a positioning hole 2-1 for embedding the water-soluble blocking component, and the connecting rod is provided with a water-through hole 12-2 connected to the connecting rod bayonet. The water-soluble component limits the rotation of the connecting rod, and when the sliding rod is kept in a vertical posture, the two pull rods are always kept in a colinear state, so that the device is self-locking, making it difficult for the latch to come out. In this embodiment, the water-soluble blocking component includes a positioning portion 10-2 combined with the positioning hole of the chuck and a stop portion combined with the connecting rod bayonet. The time for the device to take off the umbrella after encountering water can be adjusted by changing the thickness of the stop portion in the water-soluble blocking component.

[0040] The locking component is a limit rod, which is mounted on the chuck in a lever manner through a pin shaft, and the inner end of the limit rod is used to engage the chuck rod, and the outer end of the limit rod is connected to the chuck through an elastic member, and the elastic member applies elastic force to the limit rod to make the inner end of the limit rod press against the side of the latch. In this embodiment, the elastic member is a rubber band 14. The limit rod installed in a lever manner can also form a component that applies an outward force to the inner end of the latch when the latch is separated from the chuck, so as to achieve rapid release of the umbrella.

[0041] When the entire structure is placed in water, water flows in from the water through hole and contacts the water-soluble blocking component, causing it to melt. When the water-soluble blocking component dissolves, the connecting rod loses its limit, and the energy storage swing rod twists under the action of the torsion spring, indirectly driving the slide rod to slide downward, and the self-locking device fails. At the same time, under the action of the parachute stripping spring, the slide rod will accelerate to slide downward, and finally cause the blocking rod to rotate upward, and the limit rod loses its blockage, causing the entire pin to pop out in the direction of the slot formed by the limit block under the combined action of the elastic force of the parachute stripping spring and the gravity of the hung object, thereby realizing automatic parachute stripping.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic parachute release device for an air-dropped unmanned submersible, characterized in that: The invention comprises a chuck, an elastic top piece, a latch, a locking component, a latch component, and an energy storage drive unit; the latch forms a latch pin that can be detached from the chuck, the elastic top piece is installed on the chuck and applies an elastic force to the latch to make it detach, the locking component is installed on the chuck, the latch component is installed on the latch through a pin shaft, the latch component swings around the pin shaft to form a locking position that is engaged with the locking component and forms a stop for the latch to be detached from the chuck, and an unlocking position that is detached from the locking component and releases the stop for the latch to be detached from the chuck; The energy storage drive unit is installed on the latch, and includes a sliding rod, an energy storage spring and a water-soluble blocking component. The energy storage spring is connected to the pin component through the sliding rod. The energy storage spring applies elastic force to the pin component to rotate from a locking position to an unlocking position. The water-soluble blocking component is installed on the latch, and the water-soluble blocking component forms a pin that prevents the sliding rod from moving.

2. The automatic parachute release device for air-dropped unmanned submersible according to claim 1, characterized in that: The locking parts are symmetrically arranged on both sides of the latch, the latch parts are symmetrically installed on the latch, the slide bar is arranged between the two latch parts and moves along the symmetrical midline of the two latch parts, and the energy storage spring applies elastic force to the slide bar to make it move.

3. The automatic parachute release device for air-dropped unmanned submersible according to claim 2 is characterized by: The energy storage drive unit includes an energy storage rocker arm and a connecting rod, one end of the energy storage rocker arm is installed on the latch pin through a pin shaft, the other end of the energy storage rocker arm is connected to the connecting rod through a pin shaft, and the other end of the connecting rod is connected to the sliding rod through a pin shaft; when the bayonet pin component is in a locked position, the sliding rod, the connecting rod and the energy storage rocker arm are connected in sequence to form a linear connecting rod; the energy storage spring applies a swinging elastic force to the energy storage rocker arm.

4. The automatic parachute release device for air-dropped unmanned submersible according to claim 4 is characterized by: The latch component is a latch rod, which is installed on the latch pin in a lever manner through a pin shaft. The outer end of the latch rod is used to latch the locking component. The inner end of the latch rod is connected to the end of the sliding rod through a pull rod. The two ends of the pull rod are respectively connected to the latch rod and the sliding rod through a pin shaft. When the latch component is in the locked position, the two left-right symmetrical pull rods are located in a straight line.

5. The automatic parachute release device for air-dropped unmanned submersible according to claim 4 is characterized by: The locking component is a limit rod, which is installed on the chuck in a lever manner through a pin shaft. The inner end of the limit rod is used to clamp the lock rod, and the outer end of the limit rod is connected to the chuck through an elastic member. The elastic member applies elastic force to the limit rod to make the inner end of the limit rod press against the side of the pin.

6. The automatic parachute release device for air-dropped unmanned submersible according to claim 3 is characterized by: The connecting rod is provided with a bayonet, and the water-soluble blocking component is provided with a stopper portion. When the bayonet pin component is in a locked position, the stopper portion of the water-soluble blocking component is engaged with the bayonet of the connecting rod.

7. The automatic parachute release device for air-dropped unmanned submersible according to claim 2, characterized in that: The latch is provided with left-right symmetrical limit plates, a slideway for assembling the slide rod is formed between the two limit plates, the slide rod is installed in the slideway and moves along the slideway; the chuck is provided with left-right symmetrical limit blocks, a slot for inserting the latch is formed between the two limit blocks, the latch is installed in the slot and moves along the slot.

8. The automatic parachute release device for air-dropped unmanned submersible according to claim 1 is characterized by: The chuck is provided with a parachute bag connecting hole for installing the parachute bag, and the latch is provided with a connecting hole for connecting the submersible.

9. The automatic parachute release device for air-dropped unmanned submersible according to claim 1, characterized in that: The elastic top piece includes an umbrella-dropping spring and a top block. The top block is installed on the chuck through a linear slide groove. The umbrella-dropping spring is arranged in the linear slide groove and applies elastic force to the top block, and the top block presses the latch.

10. The automatic parachute release device for air-dropped unmanned submersible according to claim 6, characterized in that: The latch is provided with a positioning hole for embedding the water-soluble blocking component, and the connecting rod is provided with a water through hole connected with the bayonet of the connecting rod.

Images