Object and umbrella automatic separation device based on mechanical ejection

Abstract

The invention discloses an automatic object and umbrella separation device based on mechanical ejection. The automatic object and umbrella separation device comprises a trigger part, a conduction part, a random direction part and a delay separation part. Wherein the trigger part consists of a floor frame, a connecting rod and a trigger rod; the conduction part consists of a lever and a metal wire; the random direction part consists of a lower turntable and an ejection tube; and the delayed separation part consists of an ejection tube, and a spring, a trigger, a limiter and an ejection sliding block which are arranged in the ejection tube. According to the device, a non-directional ejection mechanism is adopted, parachute throwing in the random direction can be actively completed within several seconds after landing, and the parachute is prevented from covering loads after landing. The parachute ejection device adopts a pure mechanical structure, is high in reliability and can complete tasks in a complex electromagnetic environment; the whole parachute ejection device does not use combustion, explosion, current or friction parts, so that the generated heat is extremely low, and the parachute ejection device is not easy to detect in an infrared band; the device is regular in appearance, is rigidly connected with the load and the parachute, and is conveniently stored in a cabin.

Description

Technical Field

[0001] The invention belongs to a parachute separation device, and in particular relates to an automatic object-parachute separation device based on mechanical ejection. Background Art

[0002] In recent years, with the development of aviation technology, airdrop operations have become more and more common. Whether in war or disaster relief, airdrops are widely used because of their fast transportation speed, high delivery efficiency, no need to build roads in advance, no requirements for the type of goods, and relatively concealed advantages. In an aircraft airdrop operation, if the person is airdropped, the parachutist is often required to manually cut the parachute rope after landing and then get out from under the parachute. If the material is airdropped, personnel near the airdrop site are required to clean the parachute and receive the goods. In both cases, the inability of the parachute to separate from the load in time has caused inconvenience. The popularization of the application of intelligent airborne robots in recent years has made the demand for automatic parachute removal more urgent. Although the existing main parachute release lock device can achieve parachute separation through wind power, its application is limited by meteorological conditions. In windless conditions, the canopy covering the load will seriously hinder the movement of the equipment and still require manual intervention.

[0003] At present, parachute release locks can be divided into mechanical and electronic types, among which the mechanical type is further divided into lever type, friction type, spring type and deflection type. The mechanical principle of the electronic release lock is similar to that of the mechanical type, but the structure is complex and inconvenient to maintain. Among the mechanical release locks, the lever type mainly uses the displacement difference between the airborne object and the release lock when landing to trigger the device to release the parachute. The friction type and the spring type have the same principle, and both rely on the change in the tension of the parachute rope when landing to trigger the release device; the deflection type release lock relies on the angle of deflection of the parachute rope when landing to trigger the release device. The above four mechanical release locks cannot prevent the parachute from covering the airborne object in windless weather, and are easily triggered by mistake. Summary of the invention

[0004] In order to solve the problems that the existing parachute release lock cannot prevent the parachute from covering the airborne object in windless weather and is easily triggered by mistake, the present invention provides a non-directional ejection parachute separation device.

[0005] To achieve the above object, the present invention aims to provide a post-landing parachute ejection and separation device.

[0006] The invention discloses an automatic separation device for an object and an umbrella based on ejection, which is composed of a trigger part, a transmission part, a random direction part and a delayed separation part. The landing frame, a connecting rod and a trigger rod constitute the trigger part, the lever and a double-layer flexible wire constitute the transmission part, the lower turntable and the lower cross bar of the ejection tube constitute the random direction part, and the rest of the ejection tube except the lower cross bar and its internal spring, trigger, limiter and ejection slide block constitute the delayed separation part.

[0007] In the trigger part, the landing frame is horizontally placed at the bottom of the container with the airborne object, connected to the container with the airborne object through four connecting rods, and the trigger rod is vertically placed on the side of the container with the airborne object, and can slide in the groove on the container with the airborne object. When the lower landing frame touches the ground, due to the instability of the parallelogram structure, the connecting rod connected between the landing frame and the bottom of the container with the airborne object will rotate from a nearly vertical state to a horizontal direction, and the bottom landing frame will move up relative to the bottom of the container with the airborne object, and push the upper trigger rod to slide upward after contacting it.

[0008] In the transmission part, the lever is fixed horizontally on the container containing the airborne object and can rotate within a certain angle; one end of the lever contacts the trigger rod, and the other end is connected to a metal wire in a double-layer flexible wire. The double-layer flexible wire is similar to the brake wire of a bicycle. The outer layer is a hose made of rubber and metal, which can change its shape arbitrarily, but the length cannot be compressed or stretched; the inside is a metal wire. The characteristic of the double-layer flexible wire is that even if the wire does not look straight from the outside, the tension can still be transmitted inside. One end of the metal wire is connected to the lever, and the other end is connected to the limiter to transmit the tension of the lever; although the outer hose is wrapped outside the metal wire, one end is fixedly connected to the container containing the airborne object, and the other end is fixedly connected to the ejection tube. After one end of the lever is lifted by the trigger rod, the other end can pull the metal wire downward.

[0009] In the random direction part, the lower turntable and the lower crossbar of the ejection tube form a universal shaft structure, which can tilt the ejection tube in any direction. The connection between the lower turntable and the container containing the airborne object provides horizontal rotation freedom, and the connection between the lower turntable and the ejection tube provides vertical rotation freedom. After the container containing the airborne object lands, if there is no wind, since there is a counterweight part on the ejection tube, but the mass distribution of the trigger, limiter, spring and ejection slide block inside the ejection tube is symmetrical relative to the ejection tube axis, the center of gravity of the entire ejection tube is not on the axis, and the gravity of the ejection tube itself will cause it to fall to the side of the counterweight.

[0010] In the delayed separation part, after the stopper is pulled down by the metal wire, the trigger can rotate freely, and the pre-compressed spring inside the ejection tube pushes up the ejection slider, and the trigger rotates accordingly to release the ejection slider. The ejection tube has good air tightness except for the large and small vents and the upper opening. During the upward movement of the ejection slider, air can enter the lower part of the ejection slider in the ejection tube through the small vent at the bottom of the ejection tube. The aperture of the small vent limits the flow rate of air entering the lower part of the ejection slider in the ejection tube, thereby limiting the rate at which the ejection slider moves upward along the ejection tube, thereby realizing the delay function. After the ejection slider moves through the large vent, air can flow in from the large vent, and the flow rate of air entering the lower part of the ejection slider in the ejection tube is no longer restricted, and the ejection slider can be accelerated to eject upward.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. Prevent the parachute from covering the airborne object: The present invention combines the time delay and random direction tilt mechanism to achieve the purpose of preventing the parachute from covering the airborne object. The present invention uses the pneumatic principle to achieve the delayed release of the spring elastic force; the tilt mechanism uses the time delay of the parachute release to tilt the ejection tube, so that the parachute separates obliquely;

[0013] 2. High reliability: The present invention designs the trigger part into a frame shape and places it at the bottom of the airborne object, which together with the safety device improves the reliability of the present invention. By moving the trigger part to the bottom, the signal of the airborne object landing can be directly sensed, and it is not easy to trigger by mistake. The frame-shaped structure of the landing frame has a wider trigger range than the point or line structure, and can trigger the subsequent mechanism under more terrains and ground materials;

[0014] 3. Pure mechanical structure: While realizing the delayed non-directional ejection and abandonment function, the present invention adopts a pure mechanical structure, does not require electricity, has strong battlefield response capability, and can be used at any time; mechanical parts are simple to maintain and have a long service life compared to electronic or chemical components; there is no need to use pyrotechnics, it is not easy to be discovered in the infrared band, and has high concealment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the automatic separation device of the cargo-parachute based on mechanical ejection of the present invention.

[0016] Figure 2 It is a front view of the automatic separation device of the cargo-parachute based on mechanical ejection of the present invention.

[0017] Figure 3 For the present invention Figure 1 Sectional view of random orientation and delayed separation.

[0018] The numbers in the figure are explained as follows:

[0019] 1-Container with airborne objects, 2-Landing frame, 3-Connecting rod, 4-Safety bolt, 5-Trigger rod, 6-Lever,

[0020] 7-ejection tube, 8-lower turntable, 9-large air vent, 10-parachute, 11-parachute rope, 12-ejection slide, 13-trigger, 14-limiter, 15-small air vent, 16-spring (pre-compression), 17-double-layer flexible line, 18-counterweight. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are not limitations of the present invention.

[0022] like Figure 1 , Figure 2 As shown, an automatic separation device for an object-parachute based on mechanical ejection includes a trigger part, a transmission part, a random direction part and a delayed separation part; the trigger part is composed of a landing frame 2, a connecting rod 3 and a trigger rod 5; the transmission part is composed of a lever 6 and a double-layer flexible line 17; the random direction part is composed of an ejection tube 7, a lower turntable 8 and a counterweight 18 on the ejection tube 7; the delayed separation part is composed of an ejection tube 7, an ejection slide 12, a trigger 13, a stopper 14, a spring 16 and a large vent 9 and a small vent 15 on the ejection tube. The landing frame 2 is connected to a container 1 containing an airborne object through four connecting rods 3, and the connection parts can rotate freely; the trigger rod 5 can slide up and down in a sliding groove outside the container 1 containing an airborne object; the safety bolt 4 obliquely passes through the trigger rod 5 and the sliding groove outside the container 1 containing an airborne object; one end of the lever 6 contacts the upper end of the trigger rod 5. The device is generally described as follows: after the safety pin 4 is pulled out, when the landing frame 2 falls to the ground, the container 1 with the airborne object above continues to move downward. Due to the instability of the parallelogram, the connecting rod 3 rotates, and the distance between the landing frame 2 and the container 1 with the airborne object decreases. After the landing frame 2 contacts the lower end of the trigger rod 5, the trigger rod 5 slides upward, and the trigger rod 5 lifts the left end of the lever 6.

[0023] like Figure 3As shown, the left end of the lever 6 is lifted and the right end is moved downward, and the limiter 14 is pulled downward by the double-layer flexible line 17 to release the limit on the lower end of the trigger 13; the ejection slide 12 moves upward under the action of the pre-compressed spring 16, and the trigger 13 rotates accordingly to release the ejection slide 12; the ejection tube 7 has good air tightness, and only a small air vent 15 at the lower end is connected to the outside atmosphere. The small air vent 15 limits the flow rate of air entering the ejection tube from the lower end. Due to the air pressure, the ejection slide 12 can only move slowly upward; when the ejection slide 12 passes through the large air vent 9, the large air vent 9 is connected to the air inside and outside the ejection tube 7, and the air quickly flows into the ejection tube 7 to make the air pressure inside and outside the ejection tube 7 the same, and the ejection slide 12 is accelerated and ejected in the direction of the ejection tube 7 under the action of the pre-compressed spring 16. In windy weather, before the ejection slide 12 moves to the large vent 9, the parachute 10 moves downwind under the action of the wind, and the ejection tube 7 is pulled downwind by the parachute rope 11; after the ejection slide 12 is ejected, it and the parachute 10 are separated from the device body in the wind. In windless weather, since there is a counterweight 18 on the ejection tube 7, but the mass of the rest of the parts is evenly distributed, the center of gravity of the ejection tube 7 is not on the axis, and the gravity of the ejection tube 7 itself will cause it to fall to the side of the counterweight 18; at the same time, the delayed release part is triggered; after the ejection slide 12 slides through the large vent 9, it accelerates and ejects, hitting the parachute 10 from below along a parabolic trajectory, so that the shape of the parachute 10 changes, the windward area is reduced, and the air resistance is reduced, and the ejection slide 12 can bring the parachute along the parabolic trajectory to a place near the container 1 containing the airborne object.

[0024] The above descriptions are merely embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in other related technical fields, are included in the protection scope of the present invention.

Claims

1. A device for automatically separating a cargo-parachute based on mechanical ejection, characterized in that: It consists of a trigger part, a conduction part, a random direction part and a delayed separation part; the landing frame, the connecting rod and the trigger rod constitute the trigger part, the lever and the double-layer flexible wire constitute the conduction part, the lower turntable and the lower cross bar of the ejection tube constitute the random direction part, and the rest of the ejection tube except the lower cross bar and its internal spring, trigger, limiter and ejection slide block constitute the delayed separation part.

2. According to the mechanical ejection-based automatic separation device of the cargo-parachute according to claim 1, the features are: In the trigger part, the landing frame is horizontally placed at the bottom of the container containing the airborne object, and is connected to the container containing the airborne object through four connecting rods. The trigger rod is vertically placed on the side of the container containing the airborne object and slides in the groove on the container containing the airborne object.

3. The automatic separation device for an object and an umbrella based on mechanical ejection according to claim 1 or 2, wherein: When the lower landing frame touches the ground, due to the instability of the parallelogram structure, the connecting rod connecting the landing frame and the bottom of the container containing the airborne object will rotate from a nearly vertical state to a horizontal direction, and the bottom landing frame will move upward relative to the bottom of the container containing the airborne object, and after contacting the upper trigger rod, it will be pushed to slide upward.

4. According to the mechanical ejection-based automatic separation device of the cargo-parachute according to claim 1, the features are: In the transmission part, a lever is horizontally fixed on the container containing the airborne object, one end of the lever is in contact with the trigger rod, and the other end is connected to a metal wire in a double-layer flexible wire; the outer layer of the double-layer flexible wire is a hose made of rubber and metal, which can change shape arbitrarily, but the length cannot be compressed or stretched; Inside is a metal wire.

5. The automatic separation device for an object and an umbrella based on mechanical ejection according to claim 1 or 4, characterized in that: From the outside, the double-layer flexible wire does not appear to be stretched straight, but the internal part still transmits tension; one end of the metal wire is connected to the lever, and the other end is connected to the limiter, transmitting the tension of the lever; although the outer hose is wrapped around the metal wire, one end is fixedly connected to the container containing the airborne object, and the other end is fixedly connected to the ejection tube; after one end of the lever is lifted by the trigger rod, the other end pulls the metal wire downward.

6. The automatic separation device for an object and an umbrella based on mechanical ejection according to claim 1 is characterized in that: In the random direction part, the lower turntable and the cross bar at the lower end of the ejection tube form a universal shaft structure, which allows the ejection tube to tilt in any direction; the connection between the lower turntable and the container containing the airborne object provides horizontal rotation freedom, and the connection between the lower turntable and the ejection tube provides vertical rotation freedom.

7. The automatic separation device for an object and an umbrella based on mechanical ejection according to claim 1 or 6, characterized in that: After the container containing the airborne object lands, if there is no wind, the center of gravity of the entire ejection tube is not on the axis, because there is a counterweight on the ejection tube, but the mass distribution of the trigger, limiter, spring and ejection slide inside the ejection tube is symmetrical relative to the axis of the ejection tube. Therefore, the gravity of the ejection tube itself will cause it to fall to the side of the counterweight.

8. The automatic separation device for an object and an umbrella based on mechanical ejection according to claim 1 is characterized in that: In the delayed separation part, after the stopper is pulled down by the metal wire, the trigger rotates freely, the pre-compressed spring inside the ejection tube pushes the ejection slide block upward, and the trigger rotates accordingly to release the ejection slide block.

9. The automatic separation device for an object and an umbrella based on mechanical ejection according to claim 1 or 8, characterized in that: During the upward movement of the ejection slide, air enters the lower part of the ejection slide in the ejection tube through the small air vent at the bottom of the ejection tube; the aperture of the small air vent limits the flow rate of air entering the lower part of the ejection slide in the ejection tube, thereby limiting the rate at which the ejection slide moves upward along the ejection tube, thereby achieving a delay function.

10. The automatic separation device for an object and an umbrella based on mechanical ejection according to claim 9, characterized in that: After the ejection slider moves through the large vent, air flows in from the large vent, and the flow rate of the air into the lower end of the ejection slider in the ejection tube is unrestricted, so the ejection slider is accelerated and ejected upward.

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