Circuit dismounting and mounting training device for aircraft drag parachute

Abstract

The utility model belongs to the technical field of aviation equipment maintenance, and mainly relates to an aircraft drag parachute circuit dismounting training device, which comprises a battery pack, a parachute releasing solenoid valve, a parachute releasing switch, a parachute throwing solenoid valve, a parachute throwing switch, a relay, a gas cylinder and a parachute hook, the umbrella releasing switch controls connection and disconnection of the relay, the umbrella releasing electromagnetic valve and the battery pack, the umbrella throwing electromagnetic valve is electrically connected with the battery pack, the umbrella throwing switch controls connection and disconnection of the umbrella throwing electromagnetic valve and the battery pack, the umbrella releasing switch is turned on, the relay is attracted to form self-locking, and meanwhile the umbrella throwing electromagnetic valve is communicated with the umbrella throwing switch. The gas cylinder is connected with the parachute hook through the parachute throwing electromagnetic valve. The parachute releasing solenoid valve and the parachute throwing solenoid valve are arranged in an exposed environment to control the parachute hook to release and throw the drag parachute, so that new maintenance personnel can conveniently understand and learn an actual device.

Description

Technical Field

[0001] The utility model belongs to the technical field of aviation equipment maintenance, and mainly relates to an aircraft drag parachute circuit disassembly and assembly training device. Background Art

[0002] With their compact size, light weight, and excellent deceleration, aircraft drag parachutes have become one of the primary landing deceleration methods for modern fighter jets and play a crucial role in aircraft landing safety. Installing and removing aircraft drag parachutes is an essential skill for aircraft maintenance personnel.

[0003] Existing exercises are conducted when the aircraft are idle, but the troops are busy with combat training tasks and cannot spare a large number of aircraft for new maintenance personnel to learn and use. In addition, the drag chute compartment on the aircraft is installed at the tail of the aircraft, above the tail nozzle, and is located at a high position. A high ladder needs to be placed at the tail of the aircraft for trainees to stand on for learning and training. However, due to the lack of experience of new maintenance personnel, they are prone to falling when operating at heights, which may cause safety accidents. Therefore, the existing training method is not convenient for new maintenance personnel to observe and learn. Utility Model Content

[0004] The utility model provides an aircraft drag parachute circuit disassembly and assembly training device to solve the problems in the prior art that the aircraft drag parachute compartment is installed at a high position, which is inconvenient for observation and learning, and the aircraft combat training mission is heavy, so there is no room for new maintenance personnel to use the aircraft.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] A parachute circuit disassembly and assembly training device for an aircraft includes a frame, on which a battery pack, a parachute release solenoid valve, a parachute release switch, a parachute release solenoid valve, a parachute release switch, a relay, a gas cylinder, and a parachute hook are arranged. The relay and the parachute release solenoid valve are electrically connected to the battery pack, respectively. The parachute release switch controls the connection and disconnection of the relay and the parachute release solenoid valve with the battery pack. The parachute release solenoid valve is electrically connected to the battery pack. The parachute release switch controls the connection and disconnection of the parachute release solenoid valve with the battery pack. When the parachute release switch is turned on, the relay is attracted to form a self-locking state, and the parachute release solenoid valve is connected to the parachute release switch. The gas cylinder is connected to the parachute hook via the parachute release solenoid valve to control the release of the parachute by the parachute hook. The gas cylinder is connected to the parachute hook via the parachute release solenoid valve to control the release of the parachute by the parachute hook.

[0007] The invention has the following beneficial effects: by arranging a parachute release solenoid valve and a parachute ejection solenoid valve in an exposed environment to control the release and ejection of the drag parachute by the parachute hook, it is convenient for new maintenance personnel to understand and learn the actual device; at the same time, a relay is arranged, and after the parachute release switch is turned on, the parachute ejection solenoid valve circuit can be connected through the relay, so that the drag parachute can only be released first and then ejected, otherwise the parachute ejection circuit will not work; at the same time, the above method can make it more convenient for new maintenance personnel to carry out the disassembly and assembly training of the drag parachute circuit, avoid the new maintenance personnel from climbing high, and do not have to wait for the aircraft to be vacated.

[0008] Furthermore, the battery pack is connected to a power switch to control the power supply of the battery pack to the parachute deploying solenoid valve and the parachute throwing solenoid valve.

[0009] The invention has the following beneficial effects: when training is required, the power switch is turned on to realize power supply to the parachute releasing solenoid valve and the parachute throwing solenoid valve; when training is not required, the power supply to the parachute releasing solenoid valve and the parachute throwing solenoid valve can be actively turned off.

[0010] Furthermore, the battery pack is connected to a charger, and the charger is connected to an external power source.

[0011] The invention has the following beneficial effects: when the battery pack is out of power, the battery pack can be charged by the charger.

[0012] Furthermore, the battery pack is connected to a voltmeter to detect the voltage of the battery pack.

[0013] Furthermore, the battery pack is connected to a power indicator light, which is used to display whether the circuit is on or off.

[0014] The device has the following beneficial effects: when the power switch is turned on, the circuit and the battery pack are connected, and the power indicator light can show whether the circuit has power.

[0015] Furthermore, the battery pack is connected to a no-umbrella signal light, and a micro switch is connected between the no-umbrella signal light and the battery pack. When the umbrella is dropped from the umbrella hook, the micro switch is touched to connect the no-umbrella signal light to the battery pack.

[0016] The invention has the following beneficial effects: the no-parachute signal light can indicate whether the parachute hook is still connected with a drag parachute.

[0017] Furthermore, the relay has a coil, a first contact, a second contact, a third contact, a fourth contact, a fifth contact and a sixth contact. The umbrella release switch controls the connection between the coil and the battery pack. The second contact is connected to the battery pack. The third contact is connected to one end of the coil close to the umbrella release switch, so that the coil can form a complete power-on circuit through the connection between the second contact and the third contact. The fifth contact is connected to the parachute throwing switch, and the sixth contact is connected to the parachute throwing solenoid valve, so that the parachute throwing solenoid valve can form a complete power-on circuit through the connection between the fifth contact and the sixth contact.

[0018] Furthermore, the gas cylinder is connected to a pressure reducer, and the gas cylinder delivers gas to the parachute deploying solenoid valve and the parachute throwing solenoid valve through the pressure reducer.

[0019] Furthermore, the frame is equipped with a mounting panel, and the power switch, the parachute release switch and the parachute throwing switch are all assembled on the mounting panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0021] Figure 1 This is the circuit connection diagram of the utility model;

[0022] Figure 2 This is the gas circuit diagram of the utility model.

[0023] Description of reference numerals:

[0024] 1. Battery pack; 2. Power switch; 3. Power indicator light; 4. Voltmeter; 5. Micro switch; 6. No parachute signal light; 7. Parachute release switch; 8. Parachute ejection switch; 9. Relay; 10. Parachute release solenoid valve; 11. Parachute ejection solenoid valve; 12. Coil; 13. First contact; 14. Second contact; 15. Third contact; 16. Fourth contact; 17. Fifth contact; 18. Sixth contact; 19. Charger; 20. 1A fuse; 21. Parachute hook; 22. Pressure reducer; 23. Gas cylinder. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0026] The following describes various non-limiting embodiments of the present invention. The numbers of any elements in the accompanying drawings are for illustrative purposes only and are not intended to be limiting. Any nomenclature is provided for distinction only and does not have any limiting meaning. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with one another unless there is a conflict.

[0027] like Figure 1 、 Figure 2 As shown, an aircraft drag parachute circuit assembly and disassembly training device includes a frame, on which are arranged a battery pack 1, a parachute deployment solenoid valve 10, a parachute deployment switch 7, a parachute release solenoid valve 11, a parachute release switch 8, a relay 9, a gas cylinder 23, and a parachute hook 21. In this embodiment, the battery pack 1 is a lithium battery. In other embodiments, the battery pack 1 may be a lead-acid battery or a sodium battery.

[0028] The battery pack 1 is connected to a power switch 2 to control the power supplied by the battery pack 1 to the parachute deploying solenoid valve 10 and the parachute dropping solenoid valve 11. Specifically, when the power switch 2 is on, the battery pack 1 can supply power to the circuitry of this embodiment; when the power switch 2 is off, the battery pack 1 cannot supply power to the circuitry of this embodiment. Thus, when training is required, the power switch 2 is turned on to supply power to the parachute deploying solenoid valve 10 and the parachute dropping solenoid valve 11. When training is not required, the power supply to the parachute deploying solenoid valve 10 and the parachute dropping solenoid valve 11 can be turned off.

[0029] The battery pack 1 is connected to a voltmeter 4 , which can detect the voltage of the battery pack 1 .

[0030] Battery pack 1 is connected to a power indicator light 3, located downstream of power switch 2. Power indicator light 3 is used to indicate whether the circuit is on or off. When power switch 2 is turned on, the circuit and battery pack 1 are connected, and power indicator light 3 lights up, indicating whether the circuit has power.

[0031] The battery pack 1 is connected to a parachute-free indicator light 6, and a microswitch 5 is connected between the parachute-free indicator light 6 and the battery pack 1. When the parachute is dropped from the parachute hook 21, the parachute hook 21 contacts the microswitch 5, causing the microswitch 5 to open. This connects the parachute-free indicator light 6 to the battery pack 1, causing it to illuminate. This allows the parachute-free indicator light 6 to indicate whether the parachute is still connected to the parachute hook 21.

[0032] The battery pack 1 is connected to a charger 19, which is connected to an external power source. When the battery pack 1 is out of power, the charger 19 can be used to charge the battery pack 1.

[0033] The relay 9 and the parachute release solenoid valve 10 are electrically connected to the positive and negative poles of the battery pack 1, respectively. The parachute release switch 7 controls the connection and disconnection between the relay 9 and the parachute release solenoid valve 10 and the battery pack 1. That is, when the parachute release switch 7 is on, the battery pack 1 will supply power to the relay 9 and the parachute release solenoid valve 10; when the parachute release switch 7 is off, the battery pack 1 will not supply power to the relay 9 and the parachute release solenoid valve 10. The parachute release solenoid valve 11 is electrically connected to the positive and negative poles of the battery pack 1. The parachute release switch 8 controls the connection and disconnection between the parachute release solenoid valve 11 and the battery pack 1. That is, when the parachute release switch 8 is on, the battery pack 1 will supply power to the parachute release solenoid valve 11; when the parachute release switch 8 is off, the battery pack 1 will not supply power to the parachute release solenoid valve 11. After completing the above circuit connections, the parachute release switch 7 is turned on, and relay 9 is energized and closed, forming a self-locking state. That is, when the parachute release switch 7 is turned on, relay 9 establishes a circuit with the battery pack 1, simultaneously connecting the parachute release solenoid valve 11 to the parachute release switch 8. Therefore, the parachute release switch 8 will only function when the parachute release switch 7 is turned on. The gas cylinder 23 is connected to the parachute hook 21 via the parachute release solenoid valve 10. The parachute release solenoid valve 10 controls the gas cylinder 23 to supply gas to the parachute hook 21, thereby controlling the parachute release of the parachute. The gas cylinder 23 is connected to the parachute hook 21 via the parachute release solenoid valve 11, which controls the gas cylinder 23 to supply gas to the parachute hook 21, thereby controlling the parachute release of the parachute. The gas cylinder 23 is connected to the parachute hook 21 via the parachute release solenoid valve 11, which controls the gas cylinder 23 to supply gas to the parachute hook 21, thereby controlling the parachute release of the parachute. The gas cylinder 23 is connected to the parachute hook 21 via the parachute release solenoid valve 11. The gas cylinder 23 is connected to the pressure reducer 22, which delivers gas to the parachute release solenoid valve 10 and the parachute release solenoid valve 11.

[0034] By setting the parachute release solenoid valve 10 and the parachute throwing solenoid valve 11 in an exposed environment to control the release and throwing of the drag parachute by the parachute hook 21, it is convenient for new maintenance personnel to understand and learn the actual device. At the same time, a relay 9 is arranged. After the parachute release switch 7 is turned on, the circuit of the parachute throwing solenoid valve 11 can be connected through the relay 9, so that the drag parachute can only be released first and then the drag parachute can be thrown, otherwise the parachute throwing circuit will not work.

[0035] The frame of this embodiment is equipped with an installation panel. The power switch 2, parachute release switch 7, parachute ejection switch 8, voltmeter 4, power indicator light 3, and no parachute signal light 6 are all mounted on the installation panel, which facilitates operation of the training device. The frame of this embodiment is low in height, allowing new maintenance personnel to observe and learn directly without the need for additional tools.

[0036] The relay 9 in this embodiment comprises a coil 12, a first contact 13, a second contact 14, a third contact 15, a fourth contact 16, a fifth contact 17, and a sixth contact 18. The parachute release switch 7 controls the connection between the coil 12 and the battery pack 1. The second contact 14 is connected to the battery pack 1, and the third contact 15 is connected to the end of the coil 12 closest to the parachute release switch 7. When the coil 12 is energized and closed, the connection between the second and third contacts 14, 15 forms a complete circuit. The fifth contact 17 is connected to the parachute release switch 8, and the sixth contact 18 is connected to the parachute release solenoid valve 11. When the coil 12 is energized and closed, and the parachute release switch 8 is turned on, the connection between the fifth and sixth contacts 17, 18 forms a complete circuit.

[0037] The working process of this utility model is as follows:

[0038] The circuit in this embodiment operates as follows: 220V AC power is fed into charger 19 via a 1A fuse 20. Charger 19 undergoes voltage transformation, rectification, and stabilization, then outputs DC power to charge the battery pack 1 within the training device. Once charging is complete and charger 19 is removed, battery pack 1 can then supply power to the system. First, turn on the training device's power switch 2. The battery pack 1 outputs 24V DC power, which then flows through the 2A fuse, illuminating the power indicator 3, indicating that power is on. At this point, the voltmeter 4 indicates within the normal range (24-27V is considered normal). When the parachute release switch 7 is pressed, 24V positive DC power flows through it, one path to the parachute release solenoid valve 10, which opens. High-pressure cold air flows through the valve, locking the drag parachute and simultaneously opening the parachute hatch. The parachute is deployed under the guidance of the pilot parachute. Another path flows to relay 9, energizing its coil 12, connecting the second and third contacts 14 and 15, and the fifth and sixth contacts 17 and 18. When coil 12 in this embodiment is not energized, the first contact 13 and the second contact 14 are connected, and the fourth contact 16 and the fifth contact 17 are connected. At this time, 24V DC current flows through the second contact 14 and the third contact 15 within relay 9, causing relay 9 to self-lock. When the parachute deployment switch 7 is released, the parachute deployment solenoid valve 10 closes, but relay 9 still maintains communication between 5 and 6. When the parachute release switch 8 is pressed, 24V DC current flows through the fifth contact 17 and the sixth contact 18 within relay 9 to the parachute release solenoid valve 11, opening the valve of the parachute release solenoid valve 11. High-pressure cold air flows through the parachute release solenoid valve 11, unlocking the latch hook and jettisoning the parachute. After the parachute is jettisoned, the latch hook opens, triggering microswitch 5, connecting the air circuit, and the no-parachute indicator light 6 illuminates, alerting the pilot that the parachute is no longer in the parachute compartment. To prevent the parachute from being jettisoned before the parachute is deployed, relay 9 is used in the circuit, with an electrical interlock. The parachute can only be jettisoned after the parachute is deployed; otherwise, the parachute release circuit is disabled.

[0039] In this embodiment, a separate gas cylinder 23 is provided. The compressed air in the cylinder 23 flows directly to the parachute deployment solenoid valve 10 and the parachute launch solenoid valve 11 through a KJY-8 pressure reducer 22, thereby operating the parachute hook 21 to deploy and launch the parachute. The exposed design makes it easier for beginners to observe the air flow.

Claims

1. An aircraft drag parachute circuit disassembly and assembly training device, characterized in that: The invention comprises a frame, on which a battery pack (1), a parachute release solenoid valve (10), a parachute release switch (7), a parachute throwing solenoid valve (11), a parachute throwing switch (8), a relay (9), a gas cylinder (23) and an umbrella hook (21) are arranged. The relay (9) and the parachute release solenoid valve (10) are electrically connected to the battery pack (1), respectively. The parachute release switch (7) controls the on-off of the relay (9) and the parachute release solenoid valve (10) and the battery pack (1). The parachute throwing solenoid valve (11) is electrically connected to the battery pack (1). ), the parachute throwing switch (8) controls the on-off of the parachute throwing electromagnetic valve (11) and the battery pack (1), the parachute releasing switch (7) is turned on, the relay (9) is attracted to form a self-locking state, and at the same time, the parachute throwing electromagnetic valve (11) and the parachute throwing switch (8) are connected, the gas cylinder (23) is connected to the parachute hook (21) through the parachute releasing electromagnetic valve (10) to control the parachute of the parachute hook (21), and the gas cylinder (23) is connected to the parachute hook (21) through the parachute throwing electromagnetic valve (11) to control the parachute of the parachute hook (21).

2. The aircraft drag parachute circuit disassembly and assembly training device according to claim 1, characterized in that: The battery pack (1) is connected to a power switch (2) to control the power supply from the battery pack (1) to the parachute deploying solenoid valve (10) and the parachute throwing solenoid valve (11).

3. The aircraft drag parachute circuit disassembly and assembly training device according to claim 2, characterized in that: The battery pack (1) is connected to a charger (19), and the charger (19) is connected to an external power source.

4. The aircraft drag parachute circuit disassembly and assembly training device according to claim 2, characterized in that: The battery pack (1) is connected to a voltmeter (4) to detect the voltage of the battery pack (1).

5. The aircraft drag parachute circuit disassembly and assembly training device according to claim 2, characterized in that: The battery pack (1) is connected to a power indicator light (3), which is used to display whether the circuit is on or off.

6. The aircraft drag parachute circuit disassembly and assembly training device according to claim 2, characterized in that: The battery pack (1) is connected to a no-umbrella signal light (6), and a micro switch (5) is connected between the no-umbrella signal light (6) and the battery pack (1). When the umbrella hook (21) is thrown, the micro switch (5) is touched to connect the no-umbrella signal light (6) to the battery pack (1).

7. An aircraft drag parachute circuit disassembly and assembly training device according to any one of claims 1 to 6, characterized in that: The relay (9) comprises a coil (12), a first contact (13), a second contact (14), a third contact (15), a fourth contact (16), a fifth contact (17) and a sixth contact (18); the parachute release switch (7) controls the connection between the coil (12) and the battery pack (1); the second contact (14) is connected to the battery pack (1); the third contact (15) is connected to an end of the coil (12) close to the parachute release switch (7), so that the coil (12) can form a complete power-on circuit through the connection between the second contact (14) and the third contact (15); the fifth contact (17) is connected to the parachute release switch (8); and the sixth contact (18) is connected to the parachute release solenoid valve (11), so that the parachute release solenoid valve (11) can form a complete power-on circuit through the connection between the fifth contact (17) and the sixth contact (18).

8. An aircraft drag parachute circuit disassembly and assembly training device according to any one of claims 1 to 6, characterized in that: The gas cylinder (23) is connected to a pressure reducer (22), and the gas cylinder (23) delivers gas to the parachute deploying solenoid valve (10) and the parachute throwing solenoid valve (11) through the pressure reducer (22).

9. An aircraft drag parachute circuit disassembly and assembly training device according to any one of claims 2 to 6, characterized in that: The frame is equipped with a mounting panel, and a power switch (2), a parachute release switch (7) and a parachute throwing switch (8) are all assembled on the mounting panel.

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