Impact-resistant and burning-loss-resistant cable protection mechanism

Abstract

The invention provides an anti-impact and anti-burning-loss cable protection mechanism. The anti-impact and anti-burning-loss cable protection mechanism comprises a protector body, a bolt, a positioning pin, a nut, a spring and a stop pin. The connecting part of the protector body made of a high-temperature and high-pressure resistant material is mounted to the gunpowder chamber, and the bent part fixes the cable. One end of the bolt is connected outside the upper plunger, and the other end of the bolt is matched with the nut to fix the protector body. The positioning pin and the bolt are inserted into the connecting part in parallel and can retract and extend out under the action of the spring, and the positioning pin is clamped into the positioning groove of the nut to prevent the nut from loosening when extending out. The stop pin limits the positioning pin to prevent the positioning pin from leaving the connecting part. The protection device can adapt to the vibration impact environment when an aircraft gun works, can bear repeated impact and high-temperature baking of high-temperature and high-pressure gunpowder gas and has the same service life as the structure of the aircraft gun, the design of the protection device body can protect a cable installed on the protection device from being burnt out in the impact and baking process of high-temperature and high-pressure gunpowder residual gas, and the service life of the protection device is prolonged. And the safety of wires in the cable is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of internal energy aircraft guns, and in particular relates to an impact-resistant and burn-proof cable protection mechanism. Background Art

[0002] Due to the limited cabin space of a certain type of internal energy aircraft gun, the main engine manufacturer arranges the installation position of the aircraft gun fire control cable above the exhaust slot 27 on the aircraft gun gas cylinder 24, such as Fig.17 The cable components located above the exhaust groove 26 have no high temperature and high pressure protection measures, and the cable components will be subjected to repeated impacts of high pressure gunpowder residual gas and high temperature baking, which may cause the cable to burn, thereby bringing risks to the wires inside the cable.

[0003] After a live-fire shooting exercise, it was found that the spring armor in the cable component was seriously damaged and the cable was ablated. In order not to affect normal training, temporary protection measures were formulated without affecting the weight and balance of the aircraft, that is, two layers of ET200-35 (0.2×35) alkali-free glass ribbons were wrapped on the cables 30mm away from both ends of the spring armor of the aircraft gun cable component, tied with Shenglan SL-042 aramid flame-retardant Kevlar fiber sewing thread, and then a layer of JD-70 yellow silicone rubber self-adhesive tape was wrapped on the glass ribbon. However, after about 7 live-fire shootings, the silicone rubber self-adhesive tape wrapped on the cable component still showed ablation and damage, and needed to be protected again, affecting the safety of the wires inside the aircraft gun cable. In addition, the high-frequency vibration generated during shooting may cause the cable to further become stuck, causing the gun to stop firing. At the same time, the silicone rubber self-adhesive tape weakens due to chemical reactions after long-term use, and the high-frequency vibration during gun shooting causes the silicone rubber self-adhesive tape to fall off. Therefore, although temporary protection measures have a certain protective effect, they cannot completely solve the problem of the risk of burning of aircraft gun cables. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that high-pressure gunpowder residual gas repeatedly impacts and high-temperature bakes the internal energy aircraft gun fire control cable components, thereby affecting the safety of the wires inside the cable, and to provide an impact-resistant and burn-proof cable protection mechanism. The service life of the mechanism is the same as that of the gun, and the installation is firm and reliable. It can meet the requirements of impact and vibration resistance during gun shooting, and at the same time avoid damage to the installed cable during the repeated action of high-temperature and high-pressure gunpowder residual gas, thereby ensuring the safety of the wires inside the cable.

[0005] To achieve the above purpose, the technical solution provided by the present invention is:

[0006] An impact-resistant and burn-proof cable protection mechanism comprises a protector body, a bolt, a positioning pin, a nut, a spring and a stop pin;

[0007] The protector body is used to connect to the gunpowder bomb chamber and install and shield the cable, is made of a material that can withstand high temperature and high pressure, and includes a connecting portion for connecting to the gunpowder bomb chamber and a bending portion for installing the cable, and the connecting portion is provided with a first mounting hole, a second mounting hole, a third mounting hole and a fourth mounting hole;

[0008] The bolt is installed in the first installation hole of the connecting part, and one end of the bolt is connected to the outside of the upper plug of the gunpowder cartridge chamber, and the other end cooperates with the nut to fix the guard body to the gunpowder cartridge chamber;

[0009] The nut is provided with a plurality of arc-shaped positioning grooves along the circumferential direction;

[0010] The positioning pin is arranged in parallel with the bolt, and is inserted into the second mounting hole of the connecting part and can move axially between a retracted position and an extended position relative to the connecting part; in the retracted position, the positioning pin is completely located in the connecting part under the action of a tool punch passing through the third mounting hole of the connecting part; in the extended position, the positioning pin extends out of the connecting part and is clamped in a positioning groove of the nut to prevent the nut from loosening, thereby fastening the protector body;

[0011] The spring is coaxially located with the positioning pin in the second mounting hole of the connecting portion, and the two ends of the spring are respectively abutted against the connecting portion and the positioning pin, and the spring is used to apply a force to the positioning pin to realize the movement of the positioning pin between its retracted position and the extended position;

[0012] The stop pin is used to limit the travel of the positioning pin between the retracted position and the extended position to prevent the positioning pin from falling out of the connecting part. The stop pin and the positioning pin pass vertically through the fourth mounting hole of the connecting part and through the positioning pin and are fixedly connected to the connecting part.

[0013] Furthermore, the connecting portion of the protector body is provided with a U-shaped protrusion on the side facing the powder cartridge chamber, for mounting the protector body to the powder cartridge chamber; and a cross-shaped boss is provided on the other side facing away from the powder cartridge chamber, the first mounting hole is located at the center of the cross-shaped boss, and the second mounting hole, the third mounting hole and the fourth mounting hole are located on the lug on one side of the cross-shaped boss.

[0014] Furthermore, the bending portion is a U-shaped bent plate, and the slot of the bent plate is used to fix the cable.

[0015] Furthermore, the lower plate of the bent plate connected to the connecting portion includes two parts with different widths, and a rounded corner is provided at the intersection of the two parts.

[0016] Furthermore, one end of the bolt that cooperates with the nut is a semi-cylindrical structure and two radial sides are planes, and the planes are used as installation positioning reference surfaces.

[0017] Furthermore, the positioning pin has a stepped columnar structure, the small diameter end is a mounting shaft for being inserted into the positioning groove of the nut, the large diameter end cooperates with the second mounting hole of the connecting part, and an axially extending clearance groove is provided on the side wall of the large diameter end, and the stop pin passes through the clearance groove. When the positioning pin moves axially relative to the connecting part, the stop pin moves in the clearance groove.

[0018] Furthermore, the large diameter end of the locating pin is designed with an arc-shaped shoulder on the shaft wall at 90 degrees to the clearance groove, for being supported by a tool punch to completely confine the locating pin in the connecting portion.

[0019] Furthermore, the positioning pin is provided with a spring mounting hole for accommodating a spring.

[0020] Furthermore, the protector body is integrally machined from 40Cr high-strength alloy steel, and is subjected to quenching + tempering heat treatment and chemical phosphating surface treatment.

[0021] The advantages of the present invention are:

[0022] 1. The impact-resistant and burn-proof cable protection mechanism of the present invention comprises a protector body, bolts, positioning pins, nuts, springs and stop pins. The protector body is made of a material that can withstand high temperature and high pressure. The cable component is installed in the bending part of the protector body and is shielded and protected. The connecting part of the protector body is fixed to the gunpowder bomb chamber by bolts and nuts. The positioning pin moves axially between the retracted position and the extended position relative to the connecting part under the action of the spring. During the installation of the nut, the positioning pin and the spring are both kept retracted in the connecting part. After the nut is screwed into place, the positioning pin extends out of the connecting part under the action of the spring and is stuck in the positioning groove on the nut, which can ensure that the protector body is firmly installed and not loose under the high-frequency vibration during the artillery shooting. Therefore, the present invention can adapt to the vibration and impact environment when the aircraft gun is working, and can withstand the repeated impact and high-temperature baking of high-temperature and high-pressure gunpowder gas, and has the same life as the gun structure. The design of the protector body can protect the cable installed thereon from being burned during the impact and baking process of high-temperature and high-pressure gunpowder residual gas, ensuring the safety of the internal wires of the cable.

[0023] 2. In the present invention, the guard body is fixed by directly cooperating with the upper plug of the powder chamber through bolts, without changing the existing aircraft gun structure, which is easy to implement and has strong applicability.

[0024] 3. The total weight of the cable protection mechanism of the present invention is 0.457 kg, which has no effect on the weight and balance requirements of the aircraft and meets the installation space of the existing structure space. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The features and advantages of the present invention will become more readily understood through the following description with reference to the accompanying drawings, which are not drawn to scale and in which some features are exaggerated or minimized to show details of particular components:

[0026] Figure 1 It is a schematic diagram of the three-side assembly of the impact-resistant and burn-proof cable protection mechanism of the present invention;

[0027] Figure 2 This is an assembly front view of the impact-resistant and burn-proof cable protection mechanism of the present invention;

[0028] Figure 3 yes Figure 2 AA cross-sectional view of the impact-resistant and burn-proof cable protection mechanism;

[0029] Figure 4 The three sides of the protector body in the present invention are schematically shown. Figure 1 ;

[0030] Figure 5 The three sides of the protector body in the present invention are schematically shown. Figure 2 ;

[0031] Figure 6 It is a front view of the protector body in the present invention;

[0032] Figure 7 yes Figure 6 AA cross-sectional view of the protector body;

[0033] Figure 8 The three sides of the bolt in the present invention are schematically shown. Figure 1 ;

[0034] Fig. 9 The three sides of the bolt in the present invention are schematically shown. Figure 2 ;

[0035] Fig.10 It is a front view of the bolt in the present invention;

[0036] Fig.11 yes Fig.10 AA section view of the bolt;

[0037] Fig.12 It is a structural schematic diagram of the nut in the present invention;

[0038] Fig.13 It is a front view of the positioning pin in the present invention;

[0039] Fig.14 yes Fig.13 AA section view of the positioning pin;

[0040] Fig.15 It is a structural schematic diagram of the spring in the present invention;

[0041] Fig.16 It is a schematic structural diagram of the stop pin in the present invention;

[0042] Fig.17 It is a structural schematic diagram of the mounting base of the present invention;

[0043] Fig.18 It is a schematic diagram of the installation of the present invention with a mounting base during use.

[0044] In the figure: 1-protector body; 2-bolt; 3-locating pin; 4-nut; 5-spring; 6-stop pin; 7-first mounting hole; 8-slot; 9-U-shaped protrusion; 10-second mounting hole; 11-third mounting hole; 12-fourth mounting hole; 13-A positioning surface; 14-mounting guide; 15-fifth mounting hole; 16-giving groove; 17-mounting shaft; 18-spring mounting hole; 19-arc shoulder; 20-threaded hole; 21-locating groove; 22-cable; 23-gunpowder bomb chamber; 24-gas cylinder; 25-upper plug; 26-shoulder; 27-exhaust groove; 28-B positioning surface. DETAILED DESCRIPTION

[0045] The present invention will be described in detail below with reference to the accompanying drawings by means of exemplary embodiments of the present invention. It should be noted that the following detailed description of the present invention is only for the purpose of illustration, and is not intended to limit the present invention.

[0046] The present invention provides an impact-resistant and burn-proof cable protection mechanism, which is used to be installed in the gunpowder chamber of an internal energy aircraft gun and to receive the aircraft gun fire control cable. The structure can adapt to the vibration and impact environment when the aircraft gun is working, and can prevent the cable from being burned during the impact and baking of high-temperature and high-pressure gunpowder residual gas.

[0047] First, the overall reference Figures 1 to 3 as well as Fig.17 and Fig.18 As an exemplary embodiment of the present invention, an impact-resistant and burn-proof cable protection mechanism may include a protector body 1, a bolt 2, a positioning pin 3, a nut 4, a spring 5 and a stop pin 6. The protector body 1 is used to connect to the gunpowder bomb chamber 23 and install and shield the cable 22. The bolt 2 and the nut 4 are used to fix the protector body 1 to the gunpowder bomb chamber 23. Specifically, the protector body 1 is installed to contact the shoulder 26 of the gunpowder bomb chamber 23 and be limited by it. The positioning pin 3 can cooperate with the nut 4 to lock the nut 4 to prevent the nut 4 from loosening under high-frequency vibration impact. The spring 5 and the stop pin 6 are used to achieve the cooperation between the positioning pin 3 and the nut 4.

[0048] Now combine Figures 4 to 7The protector body 1 is made of a material that can withstand high temperature and high pressure to ensure that the cable installed above is not burned during the repeated impact of high temperature and high pressure gunpowder residual gas and high temperature baking, ensuring the safety of the internal wires of the cable. In particular, the protector body 1 can be made of 40Cr high-strength alloy steel in one piece, and adopts quenching + tempering heat treatment and chemical phosphating surface treatment. The material selection of the protector body 1 and the heat treatment and surface treatment methods can further improve the high temperature and high pressure resistance of the protector body 1, thereby further ensuring that the cable is not burned.

[0049] The protector body 1 includes a connecting portion for connecting to the powder chamber 23 and a bending portion for installing and protecting the cable 22. The protector body 1 is provided with a first mounting hole 7, a second mounting hole 10, a third mounting hole 11 and a fourth mounting hole 12. The functions of these holes will be described in detail below.

[0050] The bent portion of the protector body 1 is located above the exhaust groove 27 on the gas cylinder 24, shielding the cable 22 and separating it from the exhaust groove 27 to prevent the cable 22 from being impacted and baked by the residual gas of high-pressure gunpowder. The bent portion can be a U-shaped bent plate structure, and a slot 8 is designed on the U-shaped bent plate structure to install and fix the cable 22. The upper plate surface of the slot 8 is designed with a chamfer to prevent scratches and damage during use and to reduce weight. The lower plate connected to the connecting part is composed of a wide and narrow part with different widths. A rounded corner is designed at the intersection of the wide and narrow parts. The rounded corner is designed to prevent stress concentration, and the narrow surface is designed to reduce weight.

[0051] The connecting part of the protector body 1 is designed with a cross-shaped boss on the side facing away from the gunpowder chamber 23, and a first mounting hole 7 is designed in the center of the cross-shaped boss. In some embodiments, the first mounting hole 7 is set as a non-circular structure, and planes are designed on both sides for mounting the bolt 2, which cooperate with the planes processed on the bolt 2 to prevent the protector body 1 from rotating relative to the bolt 2 during installation, thereby facilitating the installation and positioning of the protector body 1. A second mounting hole 10, a third mounting hole 11 and a fourth mounting hole 12 are designed on the lug on one side of the cross-shaped boss. The second mounting hole 10 is used to install the positioning pin 3 and the spring 5, and the third mounting hole 11 is used to insert the tool punch when the end face of the mounting shaft 17 on the positioning pin 3 is sunk into the second mounting hole 10 designed on the protector body 1. The fourth mounting hole 12 is used to install the stop pin 6. The connecting portion of the protector body 1 is designed with a U-shaped protrusion 9 on the other side of its cross-shaped boss, that is, the side facing the gunpowder cartridge chamber 23, which is used to position the protector body 1 when it is connected to the gunpowder cartridge chamber 23. Specifically, when the protector body 1 is installed in place, the shoulder 26 of the gunpowder cartridge chamber 23 fits with the bottom of the groove of the U-shaped protrusion 9.

[0052] Recombination Figures 8 to 11The axis of the bolt 2 is perpendicular to the axis of the cable protected by the protector body 1 and is installed to the first mounting hole 7 of the connection part, and one end of the bolt 2 is connected to the outside of the upper plug 25 of the powder bomb chamber 23, and the other end cooperates with the nut 4 to fix the protector body 1 to the powder bomb chamber 23. The outer periphery of the bolt 2 is designed with a thread, and the thread diameter matches the thread diameter of the nut 4. Optionally, in order to achieve the connection with the upper plug 25, the bolt 2 is a semi-cylindrical structure along one end of the axial direction, and a mounting guide 14 and a fifth mounting hole 15 are designed in the center. The fifth mounting hole 15 is a blind hole structure, and the mounting guide 14 divides the fifth mounting hole 15 into two sections. The cross-section of the mounting guide 14 and the fifth mounting hole 15 along the center line direction matches the shape of the upper plug 25 located at the upper part of the powder bomb chamber 23. The opening side of the semi-circular structure is used to give way when the bolt 2 is installed to the upper plug 25 along the mounting guide 14, and the closed end is used to limit the installation of the bolt 2 and the upper plug 25. The other end of the bolt 2 along the axial direction, that is, the end that cooperates with the nut 4, is a semi-cylindrical structure, and the two radial sides are planar structures. The planar structure design is based on weight reduction requirements and installation requirements, wherein the A positioning surface 13 is an installation positioning reference surface. Specifically, when installing the cable protection mechanism of the present invention, the A positioning surface 13 of the bolt 2 can be made parallel to the B positioning surface 28 of the gas cylinder 24, and then the non-circular first mounting hole 7 of the protector body 1 is sleeved on the bolt 2, thereby keeping the protector body 1 in a suitable position, thereby preventing the cable protection mechanism from interfering with components in the existing structure.

[0053] Combination Fig.12 One end of the nut 4 is a hexagonal columnar structure, and a through-hole threaded hole 20 is designed in the center. The threaded hole 20 is an internal thread structure, and the thread diameter matches the thread diameter of the bolt 2. The other end of the nut 4 is evenly designed with multiple arc-shaped positioning grooves 21 along the circumference, and the diameter of the positioning groove 21 matches the diameter of the positioning pin 3.

[0054] Now combine Fig.13 and Fig.14The positioning pin 3 is arranged in parallel with the bolt 2, and the positioning pin 3 is inserted into the second mounting hole 10 of the connecting part and can move axially between the retracted position and the extended position relative to the connecting part. During the installation and removal of the nut 4, that is, when the cable protection mechanism of the present invention is installed or removed, the positioning pin 3 is in the retracted position, in which the positioning pin 3 is completely retracted into the connecting part under the action of the tool punch that passes through the third mounting hole 11 of the connecting part to make way for the nut 4, allowing it to rotate and squeeze the protector body 1 to fix the protector body 1 or release the protector body 1. After the nut 4 is installed in place, that is, when the cable protection mechanism of the present invention is in use, the positioning pin 3 moves under the action of the spring 5 described in detail below and is in the extended position. In the extended position, the positioning pin 3 extends out of the connecting part and is clamped into a positioning groove 21 of the nut 4 to prevent the nut 4 from loosening, thereby tightening the protector body 1 so that it can meet the index requirements of anti-impact vibration during shooting. In an exemplary embodiment of the present invention, the locating pin 3 has a stepped columnar structure, and the small diameter end is designed with a mounting shaft 17 for being inserted into the positioning groove 21 of the nut 4, and the diameter of the mounting shaft 17 matches the diameter of the positioning groove 21; the diameter of the large diameter end matches the diameter of the third mounting hole 11 designed on the protector body 1. To facilitate the installation and fixation of the spring, a spring mounting hole 18 may be designed at the center of the large diameter end. The spring mounting hole 18 is a blind hole, and its diameter matches the outer diameter of the spring 5, and is used to install the spring 5.

[0055] The spring 5 is coaxially located with the locating pin 3 in the second mounting hole 10 of the connecting part, and the two ends can respectively abut against the connecting part and the locating pin 3, and in particular can be accommodated in the spring mounting hole 18 of the locating pin 3. The spring 5 is used to apply a force to the locating pin 3 to realize the movement of the locating pin 3 between its retracted position and the extended position. In its retracted position, the spring 5 is in a compressed state, and in its extended position, the spring 5 is in a natural state. Therefore, after the locating pin 3 in the retracted position loses the effect of the tool punch, it is pushed out of the connecting part by the restoring force of the spring 5.

[0056] In order to realize the connection between the locating pin 3 and the protector body 1, the locating pin 3 extends out of the protector body 1 to engage with the nut 4, and is completely sunk into the protector body 1 to make way for the nut 4 and allow the nut 4 to be screwed with the bolt 2 and press the protector body 1, a make way groove 16 can be designed on the side wall of the large diameter end. When the locating pin 3 moves axially relative to the connecting part of the protector body 1, the stop pin 6 moves in the make way groove 16, and the two end points of the movement stroke correspond to the length of the make way groove 16. The length of the make way groove 16 meets the stroke requirement of sinking the end face of the mounting shaft 17 on the locating pin 3 into the third mounting hole 11 designed on the protector body 1, and the depth of the make way groove 16 meets the installation clearance requirement of the locating pin 3 and the stop pin 6. In addition, an arcuate shoulder 19 is designed on the shaft wall at a 90° angle with the clearance groove 16 at the large diameter end. The arcuate shoulder 19 is used to facilitate the end face of the mounting shaft 17 on the locating pin 3 to be sunk into the third mounting hole 11 designed on the protector body 1 when installing and disassembling the impact-resistant and burn-proof cable protection mechanism of the present invention, so as to provide a tool punch to support and limit the locating pin 3.

[0057] Combination Fig.15 The spring 5 can optionally be in a spiral linear structure, and the outer diameter of the spring 5 can match the diameter of the spring mounting hole 18 of the locating pin 3. The compression stroke of the spring 5 meets the stroke requirements of sinking the end face of the mounting shaft 17 on the locating pin 3 into the third mounting hole 11 designed on the protector body 1 and extending out of the third mounting hole 11 to engage with the nut 4.

[0058] Combination Fig.16 The stop pin 6 is used to limit the travel of the positioning pin 3 between the retracted position and the extended position to prevent the positioning pin 3 from falling out of the connecting portion of the protector body 1. During the installation or removal of the mechanism, after the tool punch is pulled out from the third mounting hole 11 of the connecting portion, the positioning pin 3 is in a free state and is pushed by the spring 5. The stop pin 6 can prevent it from leaving the connecting portion. The stop pin 6 and the positioning pin 3 pass through the fourth mounting hole 12 on the connecting portion of the protector body 1 vertically, pass through the positioning pin 3, and are fixed to the connecting portion of the protector body 1. Return to reference Figure 7 , the fourth mounting hole 12 is perpendicular to and intersects with the second mounting hole 10, that is, in the cross section of the fourth mounting hole 12 at the axis of the second mounting hole 10, a part of the hole is on the protector body 1, and the other part is in the second mounting hole 10, so as to stop and limit the positioning pin 3 installed in the second mounting hole 10. Preferably, as mentioned above, the stop pin 6 passes through the clearance groove 16 provided on the positioning pin 3 to achieve the stopping effect on the positioning pin 3. The stop pin 6 can be a cylindrical structure, and the diameter of the stop pin 6 matches the diameter of the fourth mounting hole 12 designed on the protector body 1, and is used to connect the protector body 1, the positioning pin 3 and the spring 5.

[0059] As described above, the impact-resistant and burn-proof cable protection mechanism of the present invention has a simple structure and a total weight of only 0.457 kg. It has no effect on the weight and balance requirements of the aircraft when in use and meets the existing structural space installation space.

[0060] Next, refer to Figures 1 to 18 The assembly process of the impact-resistant and burn-resistant cable protection mechanism provided by the present invention is described.

[0061] The first step is to push the bolt 2 along the installation guide 14 at one semicircular opening end into the upper plug 25 exposed outside the gunpowder cartridge chamber 23. The cross section of the bolt 2 along the center line direction matches the shape of the upper plug 25 exposed outside the gunpowder cartridge chamber 23. During installation, ensure that the A positioning surface 13 of the bolt 2 is parallel to the B positioning surface 28 of the gas cylinder 24.

[0062] The second step is to make the center line of the first mounting hole 7 on the protector body 1 coincide with the center line of the bolt 2, and the U-shaped protrusion 9 of the protector body 1 fit with the shoulder 26 on the gunpowder chamber 23, and the bottom end surface of the protector body 1 contacts the upper end surface of the gas cylinder 24;

[0063] The third step is to align and overlap the center line of the spring 5 and the center line of the spring installation hole 18 of the positioning pin 3, so that the end surface of the spring 5 contacts the bottom end surface of the spring installation hole 18;

[0064] The fourth step is to install the assembly of the spring 5 and the positioning pin 3 into the second mounting hole 10 on the protector body 1, align and overlap the center lines of the spring 5, the positioning pin 3 and the second mounting hole 10, align and overlap the center line of the arcuate shoulder 19 on the positioning pin 3 and the center line of the second mounting hole 10 on the protector body 1, and the center line and opening direction of the arcuate shoulder 19 are parallel and consistent with the center line of the third mounting hole 11. At this time, manually press the end face of the mounting shaft 17 on the positioning pin 3 into the second mounting hole 10 designed on the protector body 1, and then insert the tool punch into the third mounting hole 11 on the protector body 1, and press it on the arcuate shoulder 19 to fix the positioning pin 3 and prevent it from extending out of the second mounting hole 10;

[0065] Step 5: Align the center line of the threaded hole 20 of the nut 4 with the center line of the bolt 2, and screw the internal thread of the nut 4 into the thread of the bolt 2 until it is tightened;

[0066] The sixth step is to align and overlap the center line of the stop pin 6 with the center line of the fourth mounting hole 12 designed on the protector body 1, and rivet the stop pin 6 at both ends of the fourth mounting hole 12. At this time, pull out the tool punch, and the locating pin 3 is pushed by the spring 5 to move axially relative to the protector body 1 and pop out from the second mounting hole 10. The mounting shaft 17 on the locating pin 3 is stuck in the locating groove 21 on the bolt 4, thereby preventing the mechanism of the present invention from loosening when the aircraft gun is shot and vibrated.

[0067] In the seventh step, the cable 22 is installed into the card slot 8 of the protector body 1, thereby protecting the cable and ensuring the safety of the wires inside the cable.

[0068] Through the above description, the impact-resistant and burn-proof cable protection mechanism of the present invention can adapt to the vibration impact environment when the aircraft gun is working, and can withstand the repeated impact and high-temperature baking of high-temperature and high-pressure gunpowder gas, and has the same service life as the gun structure. The design of the protector body can protect the cable installed thereon from being burned during the impact and baking process of high-temperature and high-pressure gunpowder residual gas, ensuring the safety of the internal wires of the cable. In addition, in the present invention, the fixation of the protector body is achieved by directly cooperating with the upper plug of the gunpowder chamber through bolts, without changing the existing aircraft gun structure, which is easy to implement and has strong applicability.

[0069] Finally, it should be noted that the features mentioned and / or shown in the above description of the exemplary embodiments of the present invention may be combined in the same or similar manner into one or more other embodiments, combined with the features in other embodiments or substituted for the corresponding features in other implementations. The technical solutions obtained by these combinations or substitutions shall also be deemed to be included in the protection scope of the present invention.

Claims

1. An impact-resistant and burn-proof cable protection mechanism, characterized in that: It includes a protector body, bolts, positioning pins, nuts, springs and stop pins; The protector body is used to connect to the gunpowder bomb chamber and install and shield the cable, is made of a material that can withstand high temperature and high pressure, and includes a connecting portion for connecting to the gunpowder bomb chamber and a bending portion for installing the cable, and the connecting portion is provided with a first mounting hole, a second mounting hole, a third mounting hole and a fourth mounting hole; The bolt is mounted to the first mounting hole of the connecting portion, and one end of the bolt is connected to the outside of the upper plug of the powder cartridge chamber, and the other end cooperates with the nut to fix the guard body to the powder cartridge chamber; The nut is provided with a plurality of arc-shaped positioning grooves along the circumferential direction; The positioning pin is arranged in parallel with the bolt, the positioning pin is inserted into the second mounting hole of the connecting part and can move axially between a retracted position and an extended position relative to the connecting part; in the retracted position, the positioning pin is completely located in the connecting part under the action of a tool punch passing through the third mounting hole of the connecting part; in the extended position, the positioning pin extends out of the connecting part and is clamped in a positioning groove of the nut to prevent the nut from loosening, thereby tightening the guard body; The spring is coaxially located with the positioning pin in the second mounting hole of the connecting portion, and two ends of the spring abut against the connecting portion and the positioning pin respectively, and the spring is used to apply a force to the positioning pin to realize the movement of the positioning pin between its retracted position and the extended position; The stop pin is used to limit the travel of the locating pin between the retracted position and the extended position to prevent the locating pin from falling out of the connecting part. The stop pin and the locating pin pass through the fourth mounting hole of the connecting part vertically and pass through the locating pin and are fixedly connected to the connecting part.

2. The impact-resistant and burn-proof cable protection mechanism according to claim 1 is characterized in that: The connecting portion of the guard body is provided with a U-shaped protrusion on the side facing the powder cartridge chamber, which is used to install the guard body to the powder cartridge chamber; and is provided with a cross-shaped boss on the other side facing away from the powder cartridge chamber, the first mounting hole is located at the center of the cross-shaped boss, and the second mounting hole, the third mounting hole and the fourth mounting hole are located on the lug on one side of the cross-shaped boss.

3. The impact-resistant and burn-proof cable protection mechanism according to claim 1 or 2, characterized in that: The bending portion is a U-shaped bent plate, and the clamping groove of the bent plate is used to fix the cable.

4. The impact-resistant and burn-proof cable protection mechanism according to claim 3 is characterized in that: The lower plate of the bent plate connected to the connecting portion comprises two parts with different widths, and a rounded corner is arranged at the intersection of the two parts.

5. The impact-resistant and burn-proof cable protection mechanism according to claim 1 or 2, characterized in that: One end of the bolt that matches the nut is a semi-cylindrical structure and two radial sides are planes, and the planes are used as installation and positioning reference surfaces.

6. The impact-resistant and burn-proof cable protection mechanism according to claim 1 or 2, characterized in that: The positioning pin is in a stepped columnar structure, with a small diameter end being a mounting shaft for being inserted into the positioning groove of the nut, and a large diameter end cooperating with the second mounting hole of the connecting part. An axially extending clearance groove is provided on the side wall of the large diameter end, and the stop pin passes through the clearance groove. When the positioning pin moves axially relative to the connecting part, the stop pin moves in the clearance groove.

7. The impact-resistant and burn-proof cable protection mechanism according to claim 6 is characterized in that: The large diameter end of the locating pin is designed with an arc-shaped shoulder on the shaft wall at 90 degrees with the clearance groove, which is used for a tool punch to support it so as to completely confine the locating pin in the connecting part.

8. The impact-resistant and burn-proof cable protection mechanism according to claim 1 or 2, characterized in that: The positioning pin is provided with a spring mounting hole for accommodating the spring.

9. The impact-resistant and burn-proof cable protection mechanism according to claim 1 or 2, characterized in that: The protector body is integrally processed from 40Cr high-strength alloy steel, and is subjected to quenching + tempering heat treatment and chemical phosphating surface treatment.

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