Rocket fairing air conditioning connection device

Abstract

The application discloses a rocket fairing air conditioner connecting device, which comprises an on-rocket socket and a ground plug; the top of the ground plug is provided with a connecting block, and the connecting block is provided with a second traction rope; further comprising: a ball lock mechanism arranged on the side between the on-rocket socket and the ground plug; the ball lock mechanism comprises an on-rocket locking part and a ground locking part which are matched with each other, and the on-rocket locking part and the ground locking part are unlocked by active control or passive pull-off during rocket launching; a hook pulling mechanism arranged between the on-rocket socket and the ground plug and arranged opposite to the ball lock mechanism; and a self-sealing mechanism arranged in the on-rocket socket. The application ensures that the fairing gas does not leak after falling off, simultaneously adapts to multiple launch site environments through the redundant mechanism of active falling off and passive pull-off of the bolt, and the falling-off process does not affect the normal take-off of the rocket.

Description

TECHNICAL FIELD

[0001] The present application relates to a connecting device, in particular to a rocket fairing air conditioner connecting device, and belongs to the technical field of space vehicles. BACKGROUND

[0002] With the rapid development of China's space technology, the frequency of rocket launch continues to rise, and the rocket fairing, as a key component for protecting the internal high-value and high-precision payload, directly determines the normal working performance of the payload. During the preparation stage before launch, the fairing needs to maintain a constant temperature and humidity range to avoid damage to the payload caused by harsh environmental factors - this requirement makes it necessary for the "air conditioner system-fairing" to be reliably connected to the ground, and at the same time requires the connecting device to be accurately shed at zero seconds of rocket launch, and failure to shed should not cause catastrophic consequences such as damage to the rocket or ground system, therefore the "gas leak prevention" and "zero-second redundant shedding" performance of such connecting devices are required.

[0003] In the prior art, there are locking devices for high-reliability separation of rocket-ground interface (such as the "locking device with forced pull-off function" disclosed in comparative document CN105610000A), which core design idea is to realize locking by adopting "ball lock-ball head" structure, and to guarantee the reliability of unlocking by "active unlocking + passive forced pull-off" redundant mechanism: under normal working conditions, pulling the unlocking pull rod drives the outer sleeve to move, thereby releasing the constraint of the ball on the annular groove of the ball head to achieve separation; when active unlocking fails, the rectangular / trapezoidal weakened groove on the ball head seat can be forced to pull off under a set tension, avoiding separation failure. Although this device solves the problem of redundant unlocking of general rocket-ground interface, it still has technical problems for the special needs of rocket fairing air conditioner system:

[0004] Firstly, the existing device does not consider the sealing requirement after separation, and if gas leakage occurs after the connecting device is shed, the internal environment stability will still be destroyed.

[0005] Secondly, when the ground plug of the existing air conditioner connecting device is separated from the socket on the rocket, the components should not be hooked to affect the launch of the rocket, but the existing device only relies on the separation of the ball to achieve separation, which is difficult to ensure the stability and reliability of the shedding process.

[0006] Thirdly, the forced pull-off function of the existing device relies on the weakened groove integrated on the ball head seat, while the air conditioner connecting device needs to bear both "air conditioner wind pressure" and "environmental vibration disturbance", and needs to accurately control the pull-off force range to pull off the components independently, in order to balance the "anti-disturbance ability" and "forced pull-off reliability", and the existing structure is difficult to meet this fine requirement.

[0007] In summary, the existing general rocket ground locking device cannot meet the comprehensive needs of the rocket fairing air conditioning system, such as post-shedding leakage prevention, zero-second redundant shedding, and adaptation to harsh environments, and a connection device specially designed for this scenario is urgently needed to fill the gap in existing technology and provide reliable support for the fairing environmental protection and launch safety of the rocket before launch. SUMMARY

[0008] The present application aims to provide a rocket fairing air conditioning connection device. The present application ensures that the fairing gas does not leak after shedding, and at the same time adapts to the multi-launch site environment through the redundant mechanism of active shedding and passive bolt breaking, and the shedding process does not affect the normal take-off of the rocket.

[0009] The technical solution of the present application is a rocket fairing air conditioning connection device, which comprises an on-rocket socket and a ground plug; the on-rocket socket is connected with the rocket fairing, and the ground plug is connected with the air conditioning pipeline; the top of the ground plug is provided with a connecting block, and the connecting block is provided with a second traction rope; further comprising:

[0010] A ball lock mechanism is arranged between the on-rocket socket and the ground plug on the side, which is used to realize the mechanical locking and unlocking of the two; the ball lock mechanism comprises an on-rocket locking part and a ground locking part which cooperate with each other, and the on-rocket locking part and the ground locking part are unlocked by active control or passive breaking during rocket launch;

[0011] A hook-pulling mechanism is arranged between the on-rocket socket and the ground plug and is arranged opposite to the ball lock mechanism; it is used to maintain the stability of the connection between the on-rocket socket and the ground plug in cooperation with the ball lock mechanism, and to guide the ground plug to rotate and separate after the ball lock mechanism is unlocked;

[0012] A self-sealing mechanism is arranged in the on-rocket socket; the self-sealing mechanism is used to close the air flow channel after the on-rocket socket and the ground plug are separated.

[0013] The rocket fairing air conditioning connection device described above, the on-rocket locking part comprises a breaking bolt arranged on the side of the on-rocket socket; the ground locking part comprises an active disengagement part arranged on the ground plug; the breaking bolt is provided with a breaking ring groove; the end of the breaking bolt is provided with a ball head column, and the ball head column cooperates with the active disengagement part.

[0014] The rocket fairing air conditioner connecting device, the active disengagement part includes a first mounting plate arranged on the ground plug side, a support is arranged at one end of the first mounting plate close to the on-board socket, a locking sleeve is slidably connected to the support, a cavity is arranged through the locking sleeve, a ball head seat is arranged in the cavity, and the ball head seat is fixedly connected with the support; one end of the ball head seat close to the ball head column is provided with an insertion slot matched with the ball head column; a plurality of ball grooves are arranged on the side of the ball head seat and communicated with the insertion slot; a plurality of balls are arranged in the ball grooves; a ring groove is arranged on the ball head column; an inner convex ring is arranged at one end of the cavity close to the ball head column; when the balls abut against the inner convex ring, the inner ends of the balls pass through the ball grooves and are clamped into the ring groove.

[0015] The rocket fairing air conditioner connecting device, the ball head seat is provided with a spring retainer, a gasket is arranged on the outer side of the spring retainer, a self-locking nut is arranged on the outer side of the gasket, and the self-locking nut is fixedly connected with the ball head seat through threads; the spring retainer and the inner wall of the cavity are provided with a first spring arranged around the outer side of the ball head seat.

[0016] The rocket fairing air conditioner connecting device, the support is vertically provided with a first circular groove; the locking sleeve is vertically provided with a first waist-shaped groove; the ball head seat is vertically provided with a second circular groove, and the diameter of the second circular groove is the same as that of the first circular groove; the transverse length of the first waist-shaped groove is longer than that of the first circular groove; a positioning pin is arranged in the first circular groove, the positioning pin passes into the first circular groove from one side of the outer side of the first circular groove, passes through the first waist-shaped groove and the second circular groove, and then passes out of the first circular groove from the other side.

[0017] The rocket fairing air conditioner connecting device, the upper and lower sides of the locking sleeve are symmetrically provided with connecting rods, one end of each connecting rod is provided with a first connecting plate, and the first connecting plate is provided with a first traction rope.

[0018] The rocket fairing air conditioner connecting device, the first connecting plate is symmetrically slidably connected with first sliding rods, a second connecting plate is arranged between the first sliding rods, and the second connecting plate is located between the first connecting plate and the locking sleeve; the first connecting plate is provided with a third circular groove, and the first traction rope is fixedly connected with the second connecting plate through the third circular groove; a second spring is arranged around the outer side of the first sliding rod between the first connecting plate and the second connecting plate; a second mounting plate is arranged between the second connecting plate and the locking sleeve, a rotating rod in an inverted L shape is rotatably connected to the second mounting plate, and a shearing block is arranged at one end of the rotating rod close to the on-board socket; a third connecting plate is rotatably connected to the other end of the rotating rod, and the other end of the third connecting plate is rotatably connected with the second connecting plate.

[0019] The rocket fairing air conditioner connecting device has the following beneficial effects.

[0020] The rocket fairing air conditioner connecting device has the following beneficial effects.

[0021] The rocket fairing air conditioner connecting device has the following beneficial effects.

[0022] Compared with the prior art, the rocket fairing air conditioner connecting device has the following beneficial effects.

[0023] 1、The ball lock mechanism and the hook pulling mechanism are connected by manual operation after the socket on the arrow and the ground plug are docked. For the ball lock mechanism, the ball head column of the socket on the arrow side is disconnected from the active disengagement component on the ground plug to achieve connection; at the same time, the hook pulling mechanism on the opposite side of the ball lock mechanism is operated to form auxiliary connection with the socket on the arrow. The ball lock mechanism and the hook pulling mechanism are symmetrically matched in a main-auxiliary mode, which can not only resist the impact load generated by airflow pressure during gas delivery, but also effectively avoid loosening and deviation of the docking due to vibration or external force interference, so as to realize a tight, stable and leak-free connection between the socket on the arrow and the ground plug, and ensure that the air conditioner gas is continuously and stably delivered into the fairing. Before the rocket is launched, the active disengagement component is first disconnected from the head column, at which time the connection constraint on one side of the ball lock mechanism is completely released, and the ground plug will rotate around the connection point of the hook pulling mechanism and the socket on the arrow due to the loss of single-sided support; with the rotation of the ground plug, the force balance of the connection at the hook pulling mechanism is broken, and the original tight fitting relationship is invalid due to rotational misalignment, so the hook pulling mechanism is disconnected from the socket on the arrow, thereby completing the active disengagement of the socket on the arrow and the ground plug. If the active disengagement procedure is not successfully implemented, an upward pulling force will be generated when the rocket is launched, which will concentrate on the broken ring groove. When the pulling force reaches the preset breaking threshold, the broken ring groove will break, the broken bolt will be completely separated from the active disengagement component, and at the same time, the hook pulling mechanism will also be disconnected due to the separation force generated by the broken bolt, thereby realizing the passive disengagement of the socket on the arrow and the ground plug. In addition, after the socket on the arrow and the ground plug are separated by active disengagement or passive disengagement, the self-sealing mechanism will immediately start to quickly seal the interface channel of the socket on the arrow, effectively preventing the gas in the fairing, which has been adjusted to the appropriate temperature and humidity, from leaking, and continuously maintaining the constant environment required by the equipment in the fairing, thereby providing environmental protection for the last stage before the rocket is launched.

[0024] 2、In the ball lock mechanism of the application, the resistance of the inner convex ring to the ball is released by pulling the locking sleeve outward, then the ball head column is inserted into the insertion groove, the first spring is loosened to drive the locking sleeve to reset, the inner convex ring is extruded to clamp the ball into the ring groove of the ball head column, and the connection between the two is realized; when actively disengaging, pulling the first traction rope can drive the second connecting plate to move synchronously with the first connecting plate through the second spring, and then drive the locking sleeve to slide to make the inner convex ring disengage from the ball, thereby achieving quick unlocking without hard impact; when active disengagement fails, continuing to pull the first traction rope can make the second spring contract, drive the third connecting plate through the second connecting plate to drive the rotating rod to rotate, and make the shear block apply a shearing force to the broken ring groove of the broken bolt, so as to realize precise disconnection of the bolt by the stress concentration characteristics of the broken ring groove, thereby avoiding the risk of dragging when the rocket takes off due to the failure to disconnect the connection.

[0025] 3、The hooking mechanism of the application, the clamping shaft is fixedly connected between the third mounting plates to form a stable hooking fulcrum, the hooking slot of the hooking block is precisely matched with the clamping shaft, the shape of the hooking slot is used for preliminary positioning, then the hooking block is inserted through the clamping slot of the fixing frame, and the fixing frame is fixedly connected with the mounting block. The second waist-shaped slot on the hooking block is penetrated by the bolt, and the first threaded hole on the fixing frame is penetrated by the bolt, so that the movement range of the hooking block is limited; meanwhile, the top tightening bolt at the top of the hooking block is rotated, the inner end of the top tightening bolt is in abutment with the mounting block and generates an axial thrust, the hooking block is forced to hook the clamping shaft and be tightened, the hooking slot is tightly combined with the clamping shaft, the stability of the connection is significantly improved, and loosening caused by pressure fluctuation during gas conveying is effectively prevented. The structure design is not only convenient for accurate positioning and adjustment during installation, but also can form opposite side cooperative constraints with the ball lock mechanism, the overall connection reliability of the socket on the arrow and the ground plug is ensured, when it is necessary to be separated, the hooking slot can be smoothly rotated along the clamping shaft, the ground plug is guided to rotate around the shaft to realize orderly separation, and the connection stability and separation flexibility are considered.

[0026] 4、The self-sealing mechanism of the application, when the air conditioner stops conveying air, the external air pressure of the fairing is lower than the internal air pressure, under the action of the internal and external pressure difference, the blocking disc is subjected to a thrust in the direction of the blocking outer ring; meanwhile, the third spring always applies an elastic pre-tightening force to the blocking disc, and the two cooperate to tightly press the blocking disc to the blocking outer ring, the structure feature that the diameter of the blocking disc is greater than the inner diameter of the blocking outer ring is used, the effective sealing of the gas in the fairing is realized, and leakage is prevented. In addition, the adjusting bolt on the rotating support frame can change the extension length of the threaded end, and then the compression amount of the third spring between the outer convex ring and the blocking disc can be adjusted, the compression force of the spring on the blocking disc can be flexibly adjusted, so that the wind pressure demand of different air conditioners is adapted, and the sealing performance is stable and reliable within the preset wind pressure range. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is the installation schematic diagram of the application;

[0028] Figure 2 is the structural schematic diagram of the application;

[0029] Figure 3 is the structural schematic diagram of the other side of the application;

[0030] Figure 4 is the structural schematic diagram of the hooking mechanism;

[0031] Figure 5 is the structural schematic diagram of the active separation component;

[0032] Figure 6 is the structural schematic diagram of the socket on the arrow;

[0033] Figure 7 is the sectional view of the socket on the arrow;

[0034] Figure 8 is Figure 7 A is an enlarged schematic view of the place.

[0035] The marks in the drawings are: 1-socket on the arrow, 2-ground plug, 3-ball lock mechanism, 4-hook pull mechanism, 5-self-sealing mechanism, 6-connection block, 7-second traction rope, 40-third mounting plate, 41-mounting block, 42-clamping shaft, 43-fixing frame, 44-clamping groove, 45-hook pull block, 46-hook pull groove, 47-second waist-shaped groove, 48-first threaded hole, 49-second threaded hole, 410-tightening bolt, 50-supporting frame, 51-blocking outer ring, 52-third threaded hole, 53-adjusting bolt, 54-blocking disc, 55-second sliding rod, 56-fourth circular groove, 57-outer convex ring, 58-third spring, 300-pull-off bolt, 301-active disengagement part, 302-pull-off ring groove, 303-ball head column, 304-first mounting plate, 305-stand, 306-locking sleeve, 307-cavity, 308-ball head seat, 309-insertion groove, 310-ball groove, 311-rolling ball, 312-ring groove, 313-inner convex ring, 314-spring stop ring, 315-washer, 316-self-locking nut, 317-first spring, 318-first circular groove, 319-first waist-shaped groove, 320-second circular groove, 321-positioning pin, 322-connection rod, 323-first connecting plate, 324-first traction rope, 325-first sliding rod, 326-second connecting plate, 327-third circular groove, 328-second spring, 329-second mounting plate, 330-rotating rod, 331-shearing block, 332-third connecting plate. DETAILED DESCRIPTION

[0036] The application will be further described below in conjunction with the drawings and examples, but not as the basis for limiting the application.

[0037] Example: a rocket fairing air conditioning connecting device, the structure as shown in Figures 1-8 The arrow socket 1 is made of TC4 titanium alloy, which has high strength and excellent high and low temperature resistance. It is fixedly connected with the rocket fairing inlet through a flange, ensuring rigid connection with the fairing. The ground plug 2 is made of 304 stainless steel, which is rust-proof and suitable for the low temperature environment of air conditioning pipeline. It is sealingly connected with the air conditioning pipeline through a flange bolt, ensuring no leakage of gas delivery. Figure 2 The top of the ground plug 2 is provided with a connection block 6, which is made of 45 steel and is high in strength and not easy to deform. The connection block 6 is provided with a second traction rope 7, which is a fiber rope and is light in weight and resistant to aging. Its other end is connected with a tower crane, which is used to suspend the ground plug 2 and prevent it from falling and damaging after disengagement. The device further comprises

[0038] Ball lock mechanism 3, arranged between the side of the rocket socket 1 and the ground plug 2, is used to realize the mechanical locking and unlocking of the two; the ball lock mechanism 3 includes a rocket locking part and a ground locking part matched with each other, and the rocket locking part and the ground locking part are unlocked by active control or passive pull-off during rocket launching; as Figure 2 and Figure 5As shown, the arrow locking component includes a pull-off bolt 300 arranged on the side of the arrow socket 1, the material of the pull-off bolt 300 is 2A12 T4 aluminum alloy, by controlling the same batch material composition and heat treatment process, the mechanical property stability is ensured; the ground locking component includes a driven disengagement component 301 arranged on the ground plug 2; the pull-off bolt 300 is provided with a pull-off ring groove 302, the stress concentration effect is utilized to control the breaking force in a preset range; the end of the pull-off bolt 300 is provided with a ball head column 303, the ball head column 303 adopts 14Cr17Ni2 stainless steel, has high strength and space environment corrosion resistance characteristics, and is matched with the driven disengagement component 301. The driven disengagement component 301 includes a first mounting plate 304 arranged on the side of the ground plug 2, the first mounting plate 304 adopts 6061 aluminum alloy, is light in weight and has sufficient rigidity; one end of the first mounting plate 304 close to the arrow socket 1 is provided with a support 305, the support 305 adopts QT450 nodular cast iron, is wear-resistant and has good damping performance, and the support 305 is slidably connected with a locking sleeve 306, the locking sleeve 306 adopts 40Cr steel, and the surface is plated with chromium to reduce sliding friction; the locking sleeve 306 is provided with a cavity 307 penetrating through, the cavity 307 is provided with a ball head seat 308, the ball head seat 308 adopts 35CrMo alloy steel; one end of the ball head seat 308 towards the ball head column 303 is provided with an insertion groove 309, and the ball head column 303 is guided and matched to facilitate rapid butt joint; four ball grooves 310 are uniformly arranged on the side of the ball head seat 308 along the circumference, and the ball grooves 310 are communicated with the insertion groove 309; the ball grooves 310 are provided with balls 311, the balls 311 adopt GCr15 bearing steel, are precisely ground to ensure smooth rolling; the ball head column 303 is provided with a ring groove 312, and the ring groove 312 is self-locked matched with the balls 311; one end of the cavity 307 close to the ball head column 303 is provided with an inner convex ring 313, and the balls 311 are locked by extrusion; when the balls 311 abut against the inner convex ring 313, the inner end of the balls 311 passes through the ball grooves 310 and is clamped into the ring grooves 312, and uniform circumferential locking force is formed.The ball head seat 308 is provided with a spring stop ring 314 for limiting displacement of the first spring 317; the outer side of the spring stop ring 314 is provided with a washer 315, the outer side of the washer 315 is provided with a self-locking nut 316 fixedly connected with the ball head seat 308 through threads to prevent loosening due to vibration; the spring stop ring 314 and the inner wall of the cavity 307 are provided with the first spring 317 around the outer side of the ball head seat 308, and the unlocking force can be adjusted by selecting springs with different diameters; the support 305 is vertically provided with a first circular groove 318; the locking sleeve 306 is vertically provided with a first waist-shaped groove 319; the ball head seat 308 is vertically provided with a second circular groove 320 coaxial with the first circular groove 318; the transverse length of the first waist-shaped groove 319 is longer than that of the first circular groove 318, thereby providing a sliding stroke for the locking sleeve 306; the first circular groove 318 is provided with a positioning pin 321 penetrating through the first circular groove 318 and the second circular groove 320 to fix the ball head seat 308 with the support 305, the first waist-shaped groove 319 limits the moving range of the locking sleeve 306 to prevent it from being separated from the support 305. The upper and lower sides of the locking sleeve 306 are symmetrically provided with connecting rods 322, the other ends of the connecting rods 322 are provided with first connecting plates 323, the first connecting plates 323 are provided with first traction ropes 324; the first connecting plates 323 are symmetrically and slidably connected with first sliding rods 325, the first sliding rods 325 are provided with a second connecting plate 326 between them, and the second connecting plate 326 is located between the first connecting plate 323 and the locking sleeve 306; the first connecting plate 323 is provided with a third circular groove 327, and the first traction rope 324 is fixedly connected with the second connecting plate 326 through the third circular groove 327; the second connecting plate 326 and the first connecting plate 323 are provided with a second spring 328 around the outer side of the first sliding rod 325; the second connecting plate 326 and the locking sleeve 306 are provided with a second mounting plate 329, the second mounting plate 329 is rotatably connected with an inverted L-shaped rotating rod 330, one end of the rotating rod 330 towards the socket 1 is provided with a shearing block 331, and the shearing block 331 is corresponding to the pull-off ring groove 302 after rotation and applies a shearing force to it; the other end of the rotating rod 330 is rotatably connected with a third connecting plate 332, and the other end of the third connecting plate 332 is rotatably connected with the second connecting plate 326.By pulling the locking sleeve 306 outward, the first spring 317 is compressed and the inner convex ring 313 is no longer in contact with the ball 311, the ball head column 303 is released after being inserted into the insertion slot 309, the first spring 317 drives the locking sleeve 306 to reset, and the inner convex ring 313 is pressed to clamp the ball 311 into the ring groove 312 of the ball head column 303, realizing self-locking connection; When actively disengaging, pull the first traction rope 324, and through the second spring 328, drive the second connecting plate 326 and the locking sleeve 306 to slide, so that the inner convex ring 313 is separated from the ball 311, and the locking is released; If active disengagement fails, continue to pull the first traction rope 324 to make the second spring 328 contract, drive the rotating rod 330 to rotate through the third connecting plate 332, and the shear block 331 applies a shearing force to the pull-off ring groove 302, so that the bolt is accurately broken by using the stress concentration characteristics of the ring groove 312, thereby avoiding the risk of dragging.

[0039] The hook-pulling mechanism 4 is arranged between the socket on the arrow 1 and the ground plug 2 and is arranged opposite to the ball lock mechanism 3; it is used for maintaining the stability of the connection between the socket on the arrow 1 and the ground plug 2 in cooperation with the ball lock mechanism 3, and guiding the ground plug 2 to rotate and disengage after the ball lock mechanism 3 is unlocked; as shown in Figure 3 and Figure 4 As shown, the hook-pulling mechanism 4 includes third mounting plates 40 arranged symmetrically on the socket on the arrow 1 and made of Q235 steel plates, a clamping shaft 42 made of 40Cr steel and subjected to quenching and tempering is arranged between the third mounting plates 40, and the clamping shaft 42 is positioned at both ends by shaft shoulders and is fixed to the third mounting plates 40 by bolts to form a rigid fulcrum; the ground plug 2 is provided with a mounting block 41 made of 6061 aluminum alloy, a fixed frame 43 is fixedly connected to the outside of the mounting block 41 by bolts, a clamping groove 44 is vertically arranged on the fixed frame 43, an inverted L-shaped hook-pulling block 45 made of 45 steel and having a hardness of HRC 40-45 after quenching is arranged in the clamping groove 44, a hook-pulling groove 46 is arranged at one end of the hook-pulling block 45 close to the clamping shaft 42, and is used for hooking the clamping shaft 42. Two second waist-shaped grooves 47 are arranged on the hook-pulling block 45, corresponding first threaded holes 48 are arranged on the fixed frame 43, bolts are passed through the matching holes of the two to limit the up-and-down movement range of the hook-pulling block 45; a second threaded hole 49 is arranged at the top of the hook-pulling block 45 and is matched with a jacking bolt 410, the inner end of the jacking bolt 410 is in contact with the mounting block 41, the axial force of the bolt is converted into the tightening force of the hook-pulling block 45, and the hook-pulling groove 46 is tightly fitted with the clamping shaft 42. The structure is adjusted by bolts to realize installation alignment and form opposite constraints with the ball lock mechanism 3; when disengaging, the hook-pulling groove 46 rotates along the clamping shaft 42 to guide the ground plug 2 to orderly disengage around the shaft, and stability and flexibility are considered.

[0040] The self-sealing mechanism 5 is arranged in the socket on the arrow 1; the self-sealing mechanism 5 is used for sealing the airflow passage after the socket on the arrow 1 is separated from the ground plug 2. As shown in Figures 6 to 8As shown, the self-sealing mechanism 5 includes a support frame 50 and a blocking outer ring 51 located outside the support frame 50 and welded and sealed with the inner wall of the socket 1; the support frame 50 is provided with a third threaded hole 52, and is provided with an adjusting bolt 53, the threaded end of the adjusting bolt 53 passes through the third threaded hole 52 and faces the blocking outer ring 51; a blocking disc 54 is arranged between the adjusting bolt 53 and the blocking outer ring 51, the edge of the blocking disc 54 is provided with a sealing ring, and the blocking disc 54 is provided with a second sliding rod 55; the adjusting bolt 53 is provided with a fourth circular groove 56, the second sliding rod 55 is inserted into the fourth circular groove 56 and is in sliding connection with the fourth circular groove 56, so that the axial movement of the blocking disc 54 is stable; the threaded end of the adjusting bolt 53 is provided with an outer convex ring 57, and the third spring 58 is arranged between the outer convex ring 57 and the blocking disc 54; the diameter of the blocking disc 54 is greater than the inner hole diameter of the blocking outer ring 51, so that radial sealing is formed. When the air conditioner stops sending air, the air pressure in the fairing is higher than that outside, and the pressure difference between the inside and the outside pushes the blocking disc 54 to move towards the blocking outer ring 51; at the same time, the third spring 58 applies a pre-tightening force, and the two cooperate to make the blocking disc 54 tightly fit the blocking outer ring 51, so that gas sealing is realized. By rotating the adjusting bolt 53, the compression amount of the third spring 58 can be changed, the air pressure of the air conditioner can be flexibly adapted, and the sealing performance is stable.

[0041] Working principle:

[0042] When the socket 1 and the ground plug 2 are connected, the ball lock mechanism 3 and the hook pulling mechanism 4 need to be connected by manual operation. For the ball lock mechanism 3, the ball head column 303 of the broken bolt 300 on the side of the socket 1 is connected with the active disengagement component 301 on the ground plug 2 to form a main connection; at the same time, the hook pulling mechanism 4 on the opposite side of the ball lock mechanism 3 is operated to form an auxiliary connection with the socket 1. The ball lock mechanism 3 and the hook pulling mechanism 4 are symmetrically connected in a main-aiding mode, which can not only resist the impact load generated by the gas flow pressure during gas transmission, but also avoid loosening and deviation of the connection due to vibration or external force, so as to realize the tight, stable and leak-proof connection between the socket 1 and the ground plug 2, and ensure that the air conditioner gas is continuously and stably transmitted into the fairing.

[0043] Before the rocket is launched, the connection is preferentially released by active control: the active disengagement component 301 is disconnected from the ball head column 303, at this time the constraint of one side of the ball lock mechanism 3 is completely released, and the ground plug 2 will rotate around the connection point of the hook pulling mechanism 4 and the socket 1 due to the loss of single-sided support; with the rotation, the force balance of the hook pulling mechanism 4 is broken, the close fitting relationship is invalid due to rotation misalignment, and the hook pulling mechanism 4 is disconnected from the socket 1, thereby completing the active disengagement.

[0044] If the active disengagement is not successful, the upward pulling force generated when the rocket is launched will be concentrated on the breaking ring groove 302 of the breaking bolt 300; when the pulling force reaches the preset breaking threshold, the breaking ring groove 302 breaks, the breaking bolt 300 and the active disengagement component 301 are completely separated, and at the same time, the hook pulling mechanism 4 is separated due to the separation force generated by the breaking of the bolt, and the passive disengagement is realized.

[0045] Regardless of active or passive disengagement, after the socket 1 on the rocket is separated from the ground plug 2, the self-sealing mechanism 5 is immediately started to quickly seal the interface channel of the socket 1 on the rocket, prevent the gas adjusted to the appropriate temperature and humidity in the fairing from leaking, and continuously maintain the constant environment required by the equipment in the fairing, providing environmental protection for the last stage before the rocket is launched.

Claims

1. A rocket fairing air conditioner connecting device, comprising a rocket socket (1) and a ground plug (2); the rocket socket (1) is connected with a rocket fairing, and the ground plug (2) is connected with an air conditioner pipeline; a connecting block (6) is arranged on the top of the ground plug (2), and a second traction rope (7) is arranged on the connecting block (6); characterized in that: Also include: ​ Ball lock mechanism (3) is arranged between the rocket socket (1) and the ground plug (2) side, for realizing mechanical locking and unlocking of both; The ball lock mechanism (3) includes mutually matched rocket locking part and ground locking part, and the rocket locking part and the ground locking part are unlocked by active control or passive pull-off during rocket launching; Hook pull mechanism (4) is arranged between the rocket socket (1) and the ground plug (2) and is arranged opposite to the ball lock mechanism (3);For maintaining the stability of the connection between the rocket socket (1) and the ground plug (2) with the ball lock mechanism (3), and guiding the ground plug (2) to rotate and separate after the ball lock mechanism (3) is unlocked; Self-sealing mechanism (5) is arranged in the rocket socket (1);The self-sealing mechanism (5) is used for closing the air flow channel after the rocket socket (1) and the ground plug (2) are separated; The self-sealing mechanism (5) includes a support frame (50) and a blocking outer ring (51) arranged in the rocket socket (1), and the blocking outer ring (51) is located outside the support frame (50);The support frame (50) is provided with a third threaded hole (52), and the third threaded hole (52) is provided with an adjusting bolt (53), and the threaded end of the adjusting bolt (53) passes through the third threaded hole (52) and faces the blocking outer ring (51);The adjusting bolt (53) and the blocking outer ring (51) are provided with a blocking disc (54), and the blocking disc (54) is provided with a second sliding rod (55);The adjusting bolt (53) is provided with a fourth circular groove (56);The second sliding rod (55) is inserted into the fourth circular groove (56) and is in sliding connection with it;The threaded end of the adjusting bolt (53) is provided with an outer convex ring (57), and the third spring (58) is arranged between the outer convex ring (57) and the blocking disc (54);The diameter of the blocking disc (54) is greater than the inner diameter of the blocking outer ring (51).

2. The rocket fairing air conditioning connection apparatus of claim 1, wherein: The rocket locking part includes a pull-off bolt (300) arranged on the side of the rocket socket (1);The ground locking part includes an active separation component (301) arranged on the ground plug (2);The pull-off bolt (300) is provided with a pull-off ring groove (302);The end of the pull-off bolt (300) is provided with a ball head column (303), and the ball head column (303) cooperates with the active separation component (301).

3. The rocket fairing air conditioning connection apparatus of claim 2, wherein: The active separation component (301) comprises a first mounting plate (304) arranged on the side of the ground plug (2), the first mounting plate (304) is provided with a support (305) near one end of the arrow socket (1), a locking sleeve (306) is connected to the support (305) in a sliding mode, the locking sleeve (306) is provided with a cavity (307) penetrating through the locking sleeve (306), the cavity (307) is provided with a ball head seat (308), the ball head seat (308) is fixedly connected with the support (305); one end of the ball head seat (308) facing the ball head column (303) is provided with an insertion slot (309), the insertion slot (309) is matched with the ball head column (303); a plurality of ball grooves (310) are arranged on the side of the ball head seat (308), the ball grooves (310) are communicated with the insertion slot (309); the ball grooves (310) are provided with rolling balls (311); the ball head column (303) is provided with a ring groove (312); one end of the cavity (307) near the ball head column (303) is provided with an inner convex ring (313); when the rolling balls (311) abut against the inner convex ring (313), the inner ends of the rolling balls (311) pass through the ball grooves (310) and are clamped into the ring groove (312).

4. The rocket fairing air conditioning connection apparatus of claim 3, wherein: The ball head seat (308) is provided with a spring retainer ring (314), the outer side of the spring retainer ring (314) is provided with a gasket (315), the outer side of the gasket (315) is provided with a self-locking nut (316), the self-locking nut (316) is fixedly connected with the ball head seat (308) in a threaded mode; the spring retainer ring (314) and the inner wall of the cavity (307) are provided with a first spring (317) which is arranged around the outer side of the ball head seat (308).

5. The rocket fairing air conditioning connection apparatus of claim 3, wherein: The support (305) is vertically provided with a first circular groove (318) penetrating through the support (305); the locking sleeve (306) is vertically provided with a first waist-shaped groove (319) penetrating through the locking sleeve (306); the ball head seat (308) is vertically provided with a second circular groove (320) penetrating through the ball head seat (308), the second circular groove (320) has the same diameter as the first circular groove (318); the transverse length of the first waist-shaped groove (319) is longer than the first circular groove (318); the first circular groove (318) is provided with a positioning pin (321), the positioning pin (321) penetrates into the first circular groove (318) from one side of the first circular groove (318), and penetrates through the first waist-shaped groove (319) and the second circular groove (320) and then penetrates out of the first circular groove (318) from the other side.

6. The rocket fairing air conditioning connection apparatus of claim 3, wherein: The upper and lower sides of the locking sleeve (306) are symmetrically provided with connecting rods (322), the other ends of the connecting rods (322) are provided with first connecting plates (323), the first connecting plates (323) are provided with first traction ropes (324).

7. The rocket fairing air conditioning connection apparatus of claim 6, wherein: The first connecting plate (323) is symmetrically connected with first slide rods (325) slidingly, and the second connecting plate (326) is arranged between the first connecting plate (323) and the locking sleeve (306); the first connecting plate (323) is provided with a third circular groove (327), and the first traction rope (324) is fixedly connected with the second connecting plate (326) through the third circular groove (327); the second connecting plate (326) and the first connecting plate (323) are provided with the second spring (328) which is arranged outside the first slide rod (325); the second connecting plate (326) and the locking sleeve (306) are provided with the second mounting plate (329), the second mounting plate (329) is rotatably connected with the inverted L-shaped rotating rod (330), and the end of the rotating rod (330) towards the socket (1) is provided with the shearing block (331); the other end of the rotating rod (330) is rotatably connected with the third connecting plate (332), and the other end of the third connecting plate (332) is rotatably connected with the second connecting plate (326).

8. The rocket fairing air conditioning connection apparatus of claim 1, wherein: The hooking mechanism (4) comprises third mounting plates (40) symmetrically arranged on the socket (1) and mounting blocks (41) arranged on the ground plug (2); the third mounting plates (40) are provided with clamping shafts (42); the mounting blocks (41) are fixedly connected with fixed frames (43) outside through bolts, the fixed frames (43) are vertically provided with clamping grooves (44), the clamping grooves (44) are provided with inverted L-shaped hooking blocks (45), the hooking blocks (45) are provided with hooking grooves (46) close to the clamping shafts (42), and the hooking grooves (46) are matched with the clamping shafts (42).

9. The rocket fairing air conditioning connection apparatus of claim 8, wherein: The hooking blocks (45) are provided with a plurality of second waist-shaped grooves (47); the fixed frames (43) are provided with a plurality of first threaded holes (48), and the first threaded holes (48) correspond to the second waist-shaped grooves (47); the top of the hooking block (45) is provided with a second threaded hole (49), the second threaded hole (49) is provided with a jacking bolt (410), and the inner end of the jacking bolt (410) passes through the second threaded hole (49) and abuts against the mounting block (41).

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