Airplane rain and snow enhancing flame strip anti-falling device

Abstract

The utility model provides an anti-falling device for a rain and snow increasing flame bar of an airplane, which is used for solving the problems that the flame bar is unreliably fixed and is easy to fall off in a high-vibration environment in the prior art. The device specifically comprises a broadcast sowing hanging frame which is fixedly connected with a plurality of launching pipes; a guide groove is formed in each launching tube body, and an opening is formed in the free end of each launching tube body and serves as the starting end of the corresponding guide groove; the anti-falling module is arranged near the tail end of the guide groove and comprises a module main body which is fixedly connected to the pipe body; the threaded hole is formed in the module main body in a penetrating manner; the limiting protrusion comprises a head of an arc-shaped transition structure and a connecting tail end arranged in the threaded hole and limited in the threaded hole. One end of the elastic component is connected to the connecting tail end of the limiting bulge; the adjusting nut is screwed in the threaded hole and is fixedly connected to the other end of the elastic component; the head of the limiting protrusion extends near the tail end of the guide groove, and a flame bar mortise and tenon limiting space is formed between the head of the limiting protrusion and the tail end of the guide groove. Multiple locking of the flame bar is achieved, and falling is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to meteorological artificial rain enhancement equipment technical field, especially a kind of aircraft rain and snow flame strip anti-falling device. BACKGROUND

[0002] The flame strip fixing device widely used in current aircraft rain and snow operation mainly has the technical defects of insufficient mechanical fixing reliability. When the aircraft encounters turbulent flow, especially when the vertical acceleration exceeds 5g, the traditional buckle type fixing device is prone to accidental falling of the flame strip. The existing device may cause the flame strip to fall off under complex weather conditions, seriously affecting the operation effect and causing safety hazards. The root cause of this problem lies in the inherent defects in the structure design of the existing fixing device: the locking force of the traditional buckle mechanism is limited, and mechanical fatigue is easy to occur under continuous vibration environment, leading to fixing failure; the existing device has insufficient anti-falling design and lacks effective secondary locking mechanism. These defects are particularly prominent when the aircraft performs climbing, diving and other maneuvering flights. When sudden airflow causes the aircraft to shake violently, the alternating load borne by the fixing device may instantaneously exceed the design threshold, and the flame strip is easy to fall out of the launching tube. In actual operation, the falling problem not only causes waste of catalyst, but also may accidentally fall and fall on the runway during take-off and landing of the aircraft, which directly threatens the subsequent take-off and landing aircraft and easily causes major aviation accidents; secondly, the falling flame strip may endanger the safety of ground personnel if it falls at high speed in the city, causing personnel casualties and damage to buildings or public facilities. Although some improvement schemes have been proposed in recent years to increase the number of fixing points or use elastic pads, they have not fundamentally solved the reliable fixing problem in high-vibration environment, and new anti-falling devices need to be developed to meet the needs of modern weather modification operations. SUMMARY

[0003] The utility model provides a kind of aircraft rain and snow flame strip anti-falling device, to solve the problem of unreliable fixation of flame strip in high-vibration environment in prior art, easy to fall off.

[0004] A kind of aircraft rain and snow flame strip anti-falling device, comprising:

[0005] Spreading hanger, a plurality of launching tubes are fixedly connected thereon;

[0006] Each launching tube body is provided with a guide groove, and the free end of the launching tube body has an opening as the starting end of the guide groove;

[0007] The anti-detachment module, located near the end of the guide groove, includes: a module body, fixedly connected to the tube body; a threaded hole, penetrating through the module body; a limiting protrusion, including a head with an arc-shaped transition structure and a connecting end placed inside and confined within the threaded hole; an elastic component, one end of which is connected to the connecting end of the limiting protrusion; and an adjusting nut, tightened inside the threaded hole and fixedly connected to the other end of the elastic component.

[0008] The head of the limiting protrusion extends into the vicinity of the end of the guide groove, and forms a flame strip locking space with the end of the guide groove.

[0009] Preferably, one end of the threaded hole mounting limit protrusion is provided with a truncated cone-shaped inclined surface with a tightened opening, and the connecting end of the limit protrusion is truncated cone-shaped and is installed in conjunction with the truncated cone-shaped inclined surface.

[0010] Preferably, the head of the limiting protrusion has a beveled surface formed by an arc transition facing the direction of the latch entry, so that the flame strip latch can press the head of the limiting protrusion to retract.

[0011] Preferably, the elastic component is a compression spring, the natural length of which keeps the limiting protrusion partially inserted into the guide groove.

[0012] Preferably, the adjusting nut can be rotated and adjusted within the threaded hole to change the depth of the limiting protrusion extending into the guide groove.

[0013] Preferably, the dimensions of the locking space are matched with the dimensions of the flame strip locking space.

[0014] Preferably, the starting end of the guide groove is the latch inlet for inserting the flame strip into the tube body; the guide groove extends from the latch inlet into the inside of the tube body to form a guide channel, which is either straight or curved.

[0015] Preferably, the guide channel is a straight channel along the axial direction of the pipe, or a J-shaped channel with an arc at the end along the axial direction of the pipe at the beginning, or an L-shaped channel with a right angle at the end along the axial direction of the pipe at the beginning.

[0016] Preferably, a terminal block is fixedly installed inside the end of the launch tube body that connects to the seeding bracket;

[0017] A conductive terminal is installed through the terminal base. The terminal base has a stepped hole. The head of the conductive terminal is installed at the end with the larger diameter hole and protrudes from the surface of the terminal base inside the firing tube. It is used to connect the flame strip to the contact point. A compression spring is sleeved in the middle of the conductive terminal. One end of the compression spring abuts against the boss under the head of the conductive terminal, and the other end abuts against the step of the stepped hole. The tail of the conductive terminal is provided with threads.

[0018] An adjusting bolt is located outside the terminal block and is threaded to the tail of the conductive terminal. Its outer diameter is larger than the diameter of the smaller end of the stepped hole.

[0019] Preferably, the seeding rack includes:

[0020] At least one connecting frame, which is linear and perpendicular to the transmitting tube, is provided; the connecting frame has an internal mounting cavity for accommodating the terminal block portion and the wire portion electrically connected to the conductive terminal.

[0021] Terminal protective cover, installed on the connector frame, encloses the mounting cavity;

[0022] The fairing, designed to conform to aerodynamics, is fixedly connected to the end of the seeding rack furthest from the launch tube and covers the seeding rack.

[0023] The beneficial effects of this invention include: the modular anti-fall-off mechanism, through the coordinated action of adjustable limiting protrusions and guide grooves, achieves multiple locking of the flame strip, enhancing its anti-fall-off capability and maintaining reliable fixation even under various extreme conditions. The unique arc-shaped inclined guide structure reduces installation effort, enabling rapid assembly and disassembly in 10 seconds. The streamlined fairing design reduces aerodynamic drag, significantly improving operational safety and economy. This device solves the reliability problem of traditional fixing methods in high-vibration environments, providing technical support for weather modification operations. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of a preferred embodiment of an aircraft rain and snow enhancement flame strip anti-fall-off device.

[0025] Figure 2 This is a schematic diagram of the exploded structure of a preferred embodiment of an aircraft rain and snow enhancement flame strip anti-detachment device.

[0026] Figure 3 This is a partially enlarged structural schematic diagram of a preferred embodiment of an aircraft rain and snow enhancement flame strip anti-detachment device (without terminal protection cover and fairing).

[0027] Figure 4 This is a partial enlarged schematic diagram of a preferred embodiment of the aircraft rain and snow enhancement flame strip anti-fall-off device.

[0028] Figure 5 This is an exploded structural diagram of a preferred embodiment of the anti-detachment module.

[0029] Figure 6 This is a cross-sectional structural diagram of a preferred embodiment of the anti-detachment module.

[0030] Figure 7 This is a partial (conductive terminal portion) enlarged structural diagram of a preferred embodiment of an aircraft rain and snow enhancement flame strip anti-detachment device (without terminal protective cover and fairing).

[0031] Figure 8 This is a schematic diagram of a preferred embodiment of a conductive terminal structure. Detailed Implementation

[0032] In view of this, the present invention provides a device for preventing aircraft rain and snow enhancement flame strips from falling off. The preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[0033] See Figure 1 and Figure 2 As shown, an aircraft rain and snow enhancement flame strip anti-detachment device includes:

[0034] A seeding bracket 1 is fixedly connected to multiple launch tubes 2; each launch tube 2 has a guide groove 3 on its tube body, and the free end of the launch tube 2 has an opening, which serves as the starting end of the guide groove 3; an anti-fall-off module 4 is set near the end of the guide groove 3, including: a module body 401, fixedly connected to the tube body; a threaded hole 402, which is disposed through the module body 401; a limiting protrusion 403, including a head with an arc-shaped transition structure and a connecting end placed in and confined within the threaded hole 402; an elastic component 404, one end of which is connected to the connecting end of the limiting protrusion 403; and an adjusting nut 405, which is tightened in the threaded hole 402 and fixedly connected to the other end of the elastic component 404; the head of the limiting protrusion 403 extends into the vicinity of the end of the guide groove 3 and forms a flame strip locking space 5 between it and the end of the guide groove 3.

[0035] Specifically, the aircraft rain and snow enhancement flame strip anti-fall-off device of this utility model includes a spraying bracket 1 and multiple launching tubes 2. Each launching tube 2 has a dedicated guide groove 3 machined on its body. The anti-fall-off module 4 is located near the end of the guide groove 3 and consists of the following key components: the module body 401 is firmly connected to the tube body by welding or bolting; the module body 401 has precision threaded holes 402 machined on it; the limiting protrusion 403 is made of high-strength alloy steel, and its head is designed with an arc-shaped transition structure to reduce friction, and the connecting end is connected and fixedly connected to the elastic component 404; the elastic component 404 is preferably a stainless steel compression spring, providing stable elastic force. The flame strip is cylindrical in shape, with a conductive contact point at one end and a radial latch at the other end. Alternatively, a latch can be set on the opposite side to form a pair of opposing latches. When two latches are set, the number of guide grooves 3 also increases accordingly, presenting opposite guiding paths. The latch can be a cylindrical protrusion.

[0036] The working principle of this structure is as follows: when the flame strip catch slides along the guide groove 3 to the position of the limiting protrusion 403, it continues to move towards the end of the guide groove 3. Under the pressure of the flame strip catch, the head of the limiting protrusion 403 compresses the elastic component 404, causing the head of the limiting protrusion 403 to retract into the threaded hole 402 of the anti-drop module 4. The catch passes through the limiting protrusion 403, and the head of the limiting protrusion 403 extends into the guide groove 3 under the action of the spring, forming a mechanical limit with the end of the guide groove 3, effectively preventing the flame strip from accidentally falling off during flight vibration.

[0037] One end of the threaded hole 402 that mounts the limiting protrusion 403 has a tapered frustum-shaped inclined surface 406. The connecting end of the limiting protrusion 403 is frustum-shaped and mates with the frustum-shaped inclined surface 406. Specifically, a tapered frustum-shaped inclined surface 406 is machined at one end of the threaded hole 402 where the diameter of the opening is smaller than the inner diameter of the threaded hole 402, forming a tapered structure. The connecting end is machined into a matching frustum shape, and the taper of the frustum perfectly matches the inclined surface of the threaded hole 402. During assembly, the limiting protrusion 403 and the compression spring connected to it are first inserted into the threaded hole 402. The degree of compression of the limiting protrusion 403 is adjusted externally by adjusting the nut 405.

[0038] The head of the limiting protrusion 403 has a beveled surface formed by an arc transition facing the direction of the latch entry, allowing the flame clip latch to press against the head of the limiting protrusion 403 and retract it. The preferred tilt angle is 45°±5°, so that when the flame clip is installed, the latch can smoothly press against the beveled surface, forcing the limiting protrusion 403 to retract. The retraction process is smooth and will not cause jamming.

[0039] The elastic component 404 is a compression spring, the natural length of which keeps the limiting protrusion 403 partially inserted into the guide groove 3. The compression spring must ensure that the limiting protrusion 403 always maintains an appropriate amount of extension. The appropriate amount of extension is approximately greater than half the depth of the guide groove 3.

[0040] The adjusting nut 405 can be rotated within the threaded hole 402 to adjust the depth of the limiting protrusion 403 extending into the guide groove 3. This design allows for precise adjustment of the protrusion of the limiting protrusion 403 to accommodate the dimensional tolerances of different flame bar models, with an adjustment range of ±2mm.

[0041] The dimensions of the locking space 5 match the dimensions of the flame strip locking tenon. The position of the limiting protrusion 403 is a certain distance away from the end of the guide groove 3, leaving space for the locking tenon to be accommodated. This allows the locking tenon to be confined within the locking space 5 after passing the limiting protrusion 403, preventing the flame strip from falling off.

[0042] The starting end of the guide groove 3 is the latch inlet 301 through which the flame bar is inserted into the tube body. The guide groove 3 extends from the latch inlet 301 into the interior of the tube body to form a guide channel, which can be straight or curved. The guide channel can be a straight channel along the tube body axis, a J-shaped channel with an arc at the end along the tube body axis, or an L-shaped channel with a right angle at the end along the tube body axis. The straight type is the simplest to process. The J-shaped and L-shaped types are similar in shape, but the end shapes are slightly different. The J-shaped end has a 90° arc transition, allowing the guide latch to rotate naturally into place, while the L-shaped end has a right angle turn, providing a more secure mechanical limit.

[0043] At one end of the launch tube 2 connected to the spreading bracket 1, a terminal block 66 is fixedly installed inside. A conductive terminal 601 is installed through the terminal block 6. The terminal block 6 has a stepped hole. The head of the conductive terminal 601 is installed at the end with the larger diameter hole and protrudes from the surface of the terminal block 6 inside the launch tube. It is used to connect the flame strip to the contact point. A compression spring 603 is sleeved in the middle of the conductive terminal 601. One end of the compression spring 603 abuts against the boss under the head of the conductive terminal 601, and the other end abuts against the step of the stepped hole. The tail of the conductive terminal 601 is provided with a thread. An adjusting bolt 602 is set outside the terminal block 6 and is threaded to the tail of the conductive terminal 601. Its outer diameter is larger than the diameter of the end with the smaller diameter of the stepped hole. When the flame strip is installed, when the latch is pressed straight down to the bottom, the conductive terminal 601 is compressed into the stepped hole, and the tail of the flame strip contacts the surface of the terminal block 6. As the latch rotates circumferentially towards the flame strip, the conductive terminal 601 pops up and makes tight contact with the conductive connection point connected to the tail of the flame strip when it enters the very end of the guide channel. The length of the outward protrusion of the head of the conductive terminal 601 can be adjusted by rotating the adjusting bolt 602 when there is no external force.

[0044] The seeding rack 1 includes: at least one connecting frame 101, which is linear and perpendicularly connected to the launch tube 2; the connecting frame 101 has an internal mounting cavity for accommodating the terminal block 66 and the wire portion electrically connected to the conductive terminals 601 and 601; a terminal protective cover 102, mounted on the connecting frame 101, enclosing the mounting cavity; and a fairing 103, designed to conform to aerodynamics, fixedly connected to the end of the seeding rack 1 furthest from the launch tube 2 and enclosing the seeding rack 1. When two connecting frames 101 are used, they are fixed side-by-side in a rectangular frame using connectors. The fairing 103 is streamlined with a smaller windward side, and the seeding rack 1 is mounted on the leeward side, serving to protect the interior of the seeding rack 1 and reduce wind resistance.

[0045] In summary, the aircraft rain and snow enhancement flare anti-detachment device of this utility model adopts a modular anti-detachment mechanism. Through the coordinated cooperation of the adjustable limiting protrusion 403 and the guide groove 3, it achieves multiple locking of the flare, improving its anti-detachment capability and maintaining reliable fixation even under various extreme conditions. The unique arc-shaped inclined guide structure reduces the installation operation force, enabling rapid assembly and disassembly in 30 seconds. The streamlined fairing 103 design reduces aerodynamic drag, significantly improving operational safety and economy. This device solves the reliability problem of traditional fixing methods in high-vibration environments, providing technical support for artificial weather modification operations.

Claims

1. A device for preventing aircraft rain and snow enhancement flame strips from falling off, characterized in that, include: A seeding rack, on which multiple launch tubes are fixedly connected; Each of the transmitting tubes is provided with a guide groove, and the free end of the transmitting tube has an opening, which serves as the starting end of the guide groove; The anti-detachment module, located near the end of the guide groove, includes: a module body, fixedly connected to the transmitter tube body; and a threaded hole, which penetrates the module body. The limiting protrusion includes a head with an arc-shaped transition structure and a connecting end that is placed inside and confined within the threaded hole; an elastic component, one end of which is connected to the connecting end of the limiting protrusion; and an adjusting nut, which is tightened inside the threaded hole and fixedly connected to the other end of the elastic component. The head of the limiting protrusion extends into the vicinity of the end of the guide groove and forms a flame strip locking space with the end of the guide groove.

2. The aircraft rain and snow enhancement flame strip anti-fall-off device as described in claim 1, characterized in that, One end of the threaded hole mounting limiting protrusion is provided with a truncated cone-shaped inclined surface with a narrowed opening. The connecting end of the limiting protrusion is truncated cone-shaped and is installed in conjunction with the truncated cone-shaped inclined surface.

3. The aircraft rain and snow enhancement flame strip anti-fall-off device as described in claim 1, characterized in that, The head of the limiting protrusion has a beveled surface formed by an arc transition facing the direction of the latch entry, so that the flame strip latch can squeeze the head of the limiting protrusion to retract it.

4. The aircraft rain and snow enhancement flame strip anti-fall-off device as described in claim 1, characterized in that, The elastic component is a compression spring, whose natural length allows the limiting protrusion to remain partially inserted into the guide groove.

5. The aircraft rain and snow enhancement flame strip anti-fall-off device as described in claim 1, characterized in that, The adjusting nut can be rotated and adjusted within the threaded hole to change the depth of the limiting protrusion extending into the guide groove.

6. The aircraft rain and snow enhancement flame strip anti-fall-off device as described in claim 1, characterized in that, The dimensions of the locking space are matched with the dimensions of the flame strip locking space.

7. The aircraft rain and snow enhancement flame strip anti-fall-off device as described in claim 1, characterized in that, The starting end of the guide groove is the tenon inlet for inserting the flame strip into the tube body; the guide groove extends from the tenon inlet into the inside of the tube body to form a guide channel, which can be straight or curved.

8. The aircraft rain and snow enhancement flame strip anti-fall-off device as described in claim 7, characterized in that, The guide channel is a straight channel along the axial direction of the pipe, or a J-shaped channel with an arc at the end along the axial direction of the pipe, or an L-shaped channel with a right angle at the end along the axial direction of the pipe.

9. The aircraft rain and snow enhancement flame strip anti-fall-off device as described in claim 1, characterized in that, A terminal block is fixedly installed inside one end of the tube body that is connected to the seeding bracket. A conductive terminal is installed through the terminal base. The terminal base has a stepped hole. The head of the conductive terminal is installed at the end with the larger diameter hole and protrudes from the surface of the terminal base inside the firing tube. It is used to connect the flame strip to the contact point. A compression spring is sleeved in the middle of the conductive terminal. One end of the compression spring abuts against the boss under the head of the conductive terminal, and the other end abuts against the step of the stepped hole. The tail of the conductive terminal is provided with threads. An adjusting bolt is located outside the terminal block and is threaded to the tail of the conductive terminal. Its outer diameter is larger than the diameter of the smaller end of the stepped hole.

10. The aircraft rain and snow enhancement flame strip anti-fall-off device as described in claim 1, characterized in that, The seeding rack includes: At least one connecting frame, which is linear and perpendicular to the transmitting tube, is provided; the connecting frame has an internal mounting cavity for accommodating the terminal block portion and the wire portion electrically connected to the conductive terminal. Terminal protective cover, installed on the connector frame, seals the mounting cavity; The fairing, designed to conform to aerodynamics, is fixedly connected to the end of the seeding rack away from the launch tube and covers the seeding rack.

Images