Fixing mechanism and mounting bracket of throw-out type emergency positioning and life-saving equipment

Abstract

The present invention belongs to the technical field of airborne life-saving equipment, and discloses a fixing mechanism and a mounting bracket for a throw-type emergency positioning life-saving equipment, which are used to fix the throw-type emergency positioning life-saving equipment and the mounting bracket, and include: a pin sleeve, one end of the pin sleeve has a flange, a side mounting hole is opened on the mounting bracket, and the sleeve body of the pin sleeve passes through the side mounting hole; a top pin is arranged in the pin sleeve, a spring is axially arranged in the middle of the pin body of the top pin, and the pin head of the top pin extends out of the pin sleeve; the pin sleeve is fixed on the side wall of the mounting bracket through a fastening nut, and the top pin is fixedly connected with the pin sleeve through a limit nut. The present invention can eliminate the gap between the top pin and the throwing device, ensure that the throw-type emergency positioning life-saving equipment can be safely and reliably installed in the mounting bracket, and eliminate the accident hidden danger that the throwing device causes excessive torque on the unlocking bolt due to interference fit, resulting in the inability of the equipment to separate.

Description

Technical Field

[0001] The present invention relates to the technical field of airborne life-saving equipment, and in particular to a fixing mechanism and a mounting frame of a jettisonable emergency positioning life-saving equipment. Background Art

[0002] Aircraft jettisonable emergency locator and lifesaving devices automatically detach from the aircraft after a crash and transmit a locator beacon, significantly reducing search times and labor and material costs. Jet-type emergency locator and lifesaving devices are typically connected to the aircraft via a mounting bracket, and reliable installation of these devices presents a technical challenge.

[0003] In the prior art, the jettisonable emergency positioning and life-saving equipment is fixed to the mounting frame by means of a push pin and a fastening nut. However, due to factors such as processing errors, dimensional tolerances, and wear in a vibration environment, an assembly gap exists between the push pin and the corresponding pin sleeve. As a result, the reliability of the installation and separation of the jettisonable emergency positioning and life-saving equipment cannot be guaranteed in the vibration environment of an aircraft flight. Summary of the Invention

[0004] In response to the problems existing in the prior art, the purpose of the present invention is to propose a fixing mechanism and mounting bracket for a throwing-type emergency positioning life-saving device, which can eliminate the gap between the ejection pin and the throwing device, ensure that the throwing-type emergency positioning life-saving device can be safely and reliably installed in the mounting bracket, and eliminate the potential accident risk of excessive torque on the unlocking bolt caused by the interference fit of the throwing device, resulting in the inability to separate the equipment.

[0005] In order to achieve the above objectives, the present invention adopts the following technical solutions to achieve them.

[0006] (1) a fixing mechanism for the jettisonable emergency locator and lifesaving device, used to fix the jettisonable emergency locator and lifesaving device to a mounting frame, wherein the mounting frame is fixedly connected to the aircraft; the fixing mechanism includes: a pin sleeve, one end of which has a flange, a side mounting hole formed on the mounting frame, and a sleeve body of the pin sleeve passing through the side mounting hole;

[0007] A push pin is provided in the pin sleeve, a spring is axially provided in the middle of the pin body of the push pin, and the pin head of the push pin extends out of the pin sleeve; the pin sleeve is fixed to the side wall of the mounting frame by a fastening nut, and the push pin is fixedly connected to the pin sleeve by a limit nut;

[0008] The outer side wall of the throwable emergency positioning lifesaving device is provided with a plurality of grooves, each groove is provided with a fixing sleeve, and the pin head of the ejector pin is inserted into the fixing sleeve.

[0009] Furthermore, a retaining ring is provided at the tail of the ejector pin.

[0010] (2) Installation frame of the throw-away type emergency positioning and life-saving equipment, comprising: a frame body, the upper end of the frame body has a flanging, a top mounting hole is arranged on the flanging, and a plurality of side mounting holes are opened in the lower part of the right side wall of the frame body. The fixing mechanism enables the installation frame and the throw-away type emergency positioning and life-saving equipment to achieve multi-point fixing of the lower mounting surface through a top pin passing through the side mounting holes;

[0011] An unlocking bolt is vertically arranged on the inner side of the left side wall of the frame body, and a vertical hole is provided at the corresponding position of the throw-away type emergency positioning and life-saving equipment. The unlocking bolt is inserted into the vertical hole and fixed by a nut.

[0012] Further, the frame body is a sunken basin-shaped frame body.

[0013] Further, the installation frame is installed on the upper surface of the rear fuselage of the aircraft.

[0014] Further, the installation frame is fixedly connected to the aircraft through bolts passing through the top mounting holes.

[0015] Further, the unlocking bolt is an explosive bolt, and the threaded end of the explosive bolt is inserted into the vertical hole.

[0016] Further, a controller is also installed on the frame body. The controller is used to receive the trigger separation signal sent by the aircraft console and convert it into a throw-away signal and send it to the control end of the unlocking bolt.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) Through the structural design of the fixing mechanism of the present invention, the clearance compensation between the top pin and the fixing sleeve can be realized. After the throw-away type emergency positioning and life-saving equipment is fixed on the installation frame, the clearance between the top pin and the throw-away type emergency positioning and life-saving equipment can be eliminated, ensuring that the equipment can be safely and reliably installed on the installation frame. At the same time, the clearance generated after the top pin is worn under the high-intensity vibration environment of the equipment can be eliminated. At the same time, the torque on the unlocking bolt caused by the interference fit of the throw-away equipment can be reduced, and the hidden danger that the equipment cannot be separated can be avoided.

[0019] (2) On the premise of ensuring the stable and reliable installation of the installation frame of the present invention with the throw-away type emergency positioning and life-saving equipment, it does not affect the quick separation of the throw-away equipment and the installation frame in case of emergency, and can improve the airborne safety and reliability of the emergency life-saving throw-away equipment. Description of the Drawings

[0020] The following further describes the present invention in detail with reference to the drawings and specific embodiments.

[0021] Figure 1 It is a schematic structural diagram of a fixing mechanism of a throw-away type emergency positioning and life-saving equipment of the present invention;

[0022] Figure 2 Isometric assembly view of the fixing mechanism, mounting bracket and throwable emergency positioning life-saving equipment of the present invention;

[0023] Figure 3 Top isometric view of the mounting bracket of a throwable emergency positioning life-saving equipment of the present invention;

[0024] Figure 4 Assembly sectional view of the fixing mechanism, mounting bracket and throwable emergency positioning life-saving equipment of the present invention;

[0025] Figure 5 Sectional view of the separated state of the mounting bracket and the throwable emergency positioning life-saving equipment of the present invention;

[0026] In the above figures, 1 is the mounting bracket; 101 is the flange; 102 is the side mounting hole; 103 is the top mounting hole; 2 is the fixed throwable emergency positioning life-saving equipment; 201 is the fixing sleeve; 3 is the fixing mechanism; 301 is the pin sleeve; 302 is the top pin; 303 is the spring; 304 is the fastening nut; 305 is the limit nut; 306 is the retaining ring; 4 is the unlocking bolt; 5 is the controller. Detailed implementation manners

[0027] The following will describe in detail the implementation scheme of the present invention in conjunction with the embodiments. However, those skilled in the art will understand that the following embodiments are only used to illustrate the present invention and should not be regarded as limiting the scope of the present invention.

[0028] Embodiment 1

[0029] Refer to Figure 1 and Figure 2 , the present invention provides a fixing mechanism 3 for the throwable emergency positioning life-saving equipment 2, which is used to fix the throwable emergency positioning life-saving equipment 2 and the mounting bracket 1, and the mounting bracket 1 is fixedly connected to the aircraft; the fixing mechanism 3 includes: a pin sleeve 301, one end of the pin sleeve 301 has a flange, a side mounting hole 102 is opened on the mounting bracket 1, and the sleeve body of the pin sleeve 301 passes through the side mounting hole 102; a top pin 302 is arranged in the pin sleeve 301, a spring 303 is axially arranged in the middle of the pin body of the top pin 302, and the pin head of the top pin 302 extends out of the pin sleeve 301; the pin sleeve 301 is fixed on the side wall of the mounting bracket 1 through a fastening nut 304, and the top pin 302 is fixedly connected to the pin sleeve 301 through a limit nut 305; there are a plurality of grooves on the outer side wall of the throwable emergency positioning life-saving equipment 2, and a fixing sleeve 201 is arranged in each groove, and the pin head of the top pin 302 is inserted into the fixing sleeve 201.

[0030] Furthermore, a retaining ring 306 is arranged at the tail of the top pin 302.

[0031] In the above embodiments, the installation process of the fixing mechanism 3 of the present invention is as follows: Install the spring 303 into the middle of the pin body of the top pin 302, and then install the top pin 302 into the pin sleeve 301; the flange end of the pin sleeve 301 passes through the side installation hole 102 from the inside of the installation frame 1, and then compress the spring 303 with the limit nut 305 until it cannot rotate, and turn over and rivet the retaining ring 306 on the top pin 302 to prevent the limit nut 305 from falling off; complete the assembly of the fixing mechanism 3. Then fix the entire fixing mechanism 3 to the side wall of the installation frame 1 through the fastening nut 304, as Figure 2 shown. Loosen the limit nut 305. At this time, the top pin 302 can float to the right in its axial direction under the action of the force of the spring 303, and the gap between the top pin 302 and the fixing sleeve 201 can be eliminated under the action of the spring 303.

[0032] As Figure 2 shown, the throwable emergency positioning and rescue device 2 is fixed to the installation frame 1 by three-point fixing; among them, two fixing mechanisms 3 are inserted into the installation holes on the left side wall of the installation frame 1 and fixed to the side wall of the installation frame 1 with the fastening nut 304; the right end is the unlocking bolt 4.

[0033] Embodiment 2

[0034] Referring to Figure 3 , the installation frame 1 of the throwable emergency positioning and rescue device 2 includes: a frame body, the upper end of the frame body has a flanging 101, a top installation hole 103 is provided on the flanging 101, and a plurality of side installation holes 102 are opened at the lower part of the right side wall of the frame body. The fixing mechanism 3 passes through the side installation hole 102 with the top pin 302 to realize multi-point fixing of the lower installation surface of the installation frame 1 and the throwable emergency positioning and rescue device 2; an unlocking bolt 4 is vertically arranged on the inner side of the left side wall of the frame body, and a vertical hole is provided at the corresponding position of the throwable emergency positioning and rescue device 2. The unlocking bolt 4 is inserted into the vertical hole and fixed with a nut.

[0035] Referring to Figure 3 , according to an embodiment of the present invention, the frame body is a sunken basin-shaped frame body.

[0036] Referring to Figure 3 , according to an embodiment of the present invention, the installation frame 1 is installed on the upper surface of the rear fuselage of the aircraft.

[0037] Referring to Figure 3 , according to an embodiment of the present invention, the installation frame 1 is fixedly connected to the aircraft by bolts passing through the top installation hole 103.

[0038] Referring to Figures 3 - 5 , according to an embodiment of the present invention, the unlocking bolt 4 is an explosive bolt, and the threaded end of the explosive bolt is inserted into the vertical hole.

[0039] Reference Figure 4 and Figure 5 According to an embodiment of the present invention, a controller 5 is further installed on the frame body. The controller 5 is configured to receive a trigger separation signal sent by an aircraft console and convert it into a release signal and send it to the control end of the unlocking bolt 4.

[0040] When installing the throw-away emergency positioning and life-saving device 2, first tighten the limit nut 305 so that it cannot rotate. At this time, the distance between the top pin 302 and the front end of the pin sleeve 301 is zero, and the spring 303 is in the maximum compression state. At this time, insert the throw-away emergency positioning and life-saving device 2 into the positioning pin on the mounting bracket 1 so that the throw-away emergency positioning and life-saving device 2 is flush with the surface of the mounting bracket 1. At this time, the threaded part of the unlocking bolt 4 has been inserted into the throw-away emergency positioning and life-saving device 2, and use a nut to fix the throw-away emergency positioning and life-saving device 2, as Figure 4 shown.

[0041] At this time, it cannot be ensured that the top pin 302 on the fixing mechanism 3 and the fixing sleeve 201 in the groove of the throw-away emergency positioning and life-saving device 2 are in a tight fit state. Therefore, loosen the limit nut 305 to the position of the retaining ring 306 until the limit nut 305 cannot rotate. At this time, the top pin 302 can float to the right in its axial direction under the action of the spring 303 force, and the gap between the top pin 302 and the fixing sleeve 201 can be eliminated under the action of the spring 303. See specifically Figure 4 .

[0042] The process of separating the throw-away emergency positioning and life-saving device 2 from the mounting bracket 1: When the aircraft is flying at high altitude and encounters an emergency, the controller 5 receives a trigger separation signal sent by the aircraft console and converts it into a release signal to act on the control end of the unlocking bolt 4, causing the internal gunpowder of the unlocking bolt 4 to explode and cut off the internal shear pin. The fixed part of the threaded end of the unlocking bolt 4 separates, and gives an upward separating force to the throw-away emergency positioning and life-saving device 2. The fixed end of the unlocking bolt 4 of the throw-away emergency positioning and life-saving device 2 separates from the mounting bracket 1 and separates from the aircraft under the action of the airflow. As Figure 5 shown.

[0043] The throw-away emergency positioning and life-saving device 2 of the present invention is installed on the upper surface of the rear fuselage of the aircraft. When the aircraft crashes, it ejects from the aircraft and emits a positioning signal to guide the rescue aircraft for rescue. The installation diagram is as Figure 2 shown. In the figure, the throw-away emergency positioning and life-saving device 2 is installed in the mounting bracket 1 and is installed and fixed in the mounting bracket 1 through the top pin 302 and the fastening nut 304. The mounting bracket 1 is installed on the aircraft frame. After installation, the throw-away emergency positioning and life-saving device 2 is conformal with the aircraft surface to ensure the aerodynamic shape. However, due to three fixed points (see Figure 3)The axes are not in the same plane. Coupled with factors such as machining errors, dimensional tolerances, and wear in a vibration environment, there is an assembly gap between the pin and the pin sleeve 301, increasing the installation risk in a vibration environment. The present invention designs a fixing mechanism 3 to compensate for the assembly gap and ensure assembly reliability.

[0044] Although the present invention has been described in detail in this specification with general descriptions and specific embodiments, based on the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

Claims

1. The fixing mechanism of a throwable emergency positioning and life-saving device, which is used to fix the throwable emergency positioning and life-saving device and the mounting bracket, and the mounting bracket is fixedly connected to the aircraft; characterized in that, The fixing mechanism includes: a pin sleeve, one end of the pin sleeve has a flange, a side mounting hole is provided on the mounting frame, and the sleeve body of the pin sleeve passes through the side mounting hole; A top pin is arranged inside the pin sleeve, a spring is axially arranged in the middle of the pin body of the top pin, and the pin head of the top pin extends out of the pin sleeve; the pin sleeve is fixed on the side wall of the mounting frame through a fastening nut, and the top pin is fixedly connected to the pin sleeve through a limit nut; A plurality of grooves are provided on the outer side wall of the throwable emergency positioning life-saving device, and a fixing sleeve is arranged in each groove, and the pin head of the top pin is inserted into the fixing sleeve; A retaining ring is arranged at the tail of the top pin; The installation process of the fixing mechanism is as follows: install the spring in the middle of the pin body of the top pin, and then install the top pin into the pin sleeve; the flange end of the pin sleeve passes through the side mounting hole from the inside of the mounting frame, and then compress the spring through the limit nut until it cannot rotate, turn over and rivet the retaining ring on the top pin to prevent the limit nut from falling off; complete the assembly of the fixing mechanism; then fix the entire fixing mechanism on the side wall of the mounting frame through a fastening nut; loosen the limit nut to eliminate the gap between the top pin and the fixing sleeve.

2. The fixing mechanism of the throwable emergency positioning and rescue device according to claim 1, characterized in that, The mounting frame includes: a frame body, the upper end of the frame body has a flanging, a top mounting hole is provided on the flanging, and a plurality of side mounting holes are provided in the lower part of the right side wall of the frame body. The fixing mechanism passes through the side mounting holes with the top pin to realize multi-point fixing of the lower mounting surface of the mounting frame and the throwable emergency positioning life-saving device; An unlocking bolt is vertically arranged on the inner side of the left side wall of the frame body, a vertical hole is provided at the corresponding position of the throwable emergency positioning life-saving device, and the unlocking bolt is inserted into the vertical hole and fixed through a nut.

3. The fixing mechanism of the throwable emergency positioning and rescue device according to claim 2, characterized in that, The frame body is a sunken basin-shaped frame body.

4. The fixing mechanism of the throwable emergency positioning and life-saving device according to claim 2, characterized in that, The mounting frame is installed on the upper surface of the rear fuselage of the aircraft.

5. The fixing mechanism of the throwable emergency positioning and rescue device according to claim 4, characterized in that, The mounting frame is fixedly connected to the aircraft through bolts passing through the top mounting holes.

6. The fixing mechanism of the throwable emergency positioning and life-saving device according to any one of claims 2-5, characterized in that, The unlocking bolt is an explosive bolt, and the threaded end of the explosive bolt is inserted into the vertical hole.

7. The fixing mechanism of the throwable emergency positioning and rescue device according to claim 6, characterized in that A controller is also installed on the frame body, and the controller is used for receiving the trigger separation signal sent by the aircraft console and converting it into a throw signal and sending it to the control end of the unlocking bolt.

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