Rocket fairing air conditioner connecting device

Abstract

The invention discloses a rocket fairing air conditioner connecting device which comprises an on-rocket socket and a ground plug. A connecting block is arranged at the top of the ground plug, and a second traction rope is arranged on the connecting block; the ball lock mechanism is arranged at the side part 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 through active control or passive snap when a rocket is launched; the hooking and pulling mechanism is arranged between the on-rocket socket and the ground plug and is arranged opposite to the ball lock mechanism; and the self-sealing mechanism is arranged in the rocket socket. It is guaranteed that gas of the fairing does not leak after falling off, meanwhile, the fairing is matched with the multi-launching-site environment through a redundancy mechanism of active falling off and passive snap bolts, and normal take-off of a rocket is not affected in the falling-off process.

Description

Technical Field

[0001] The present invention relates to a connecting device, in particular to a rocket fairing air-conditioning connecting device, and belongs to the technical field of aerospace equipment. Background Art

[0002] With the rapid development of my country's aerospace technology, the frequency of rocket launches continues to increase. As a key component protecting the high-value, high-precision payload inside, the stability of the rocket fairing's internal environment directly determines the normal performance of the payload. During the pre-launch preparation phase, the fairing must maintain a constant temperature and humidity range to prevent damage to the payload from harsh environmental factors. This requirement necessitates a reliable rocket-ground connection between the "air-conditioning system" and the fairing. At the same time, the connection must be precisely detached at zero seconds after the rocket launch, and any detachment failure must not cause catastrophic consequences such as damage to the rocket or ground systems. Therefore, the connection device is subject to dual stringent requirements for "gas leakage prevention" and "zero-second redundant detachment" performance.

[0003] In the prior art, there are locking devices for highly reliable separation of the rocket-ground interface (such as the "locking device with forced breaking function" disclosed in the comparative document CN105610000A). Its core design concept is to use a "ball lock-ball head" structure to achieve locking, and to ensure unlocking reliability through a redundant mechanism of "active unlocking + passive forced breaking": under normal operating conditions, pulling the unlocking rod drives the outer sleeve to move, releasing the constraint of the ball on the annular groove of the ball head to achieve separation; when active unlocking fails, the rectangular / trapezoidal weakening groove on the ball head seat can be forced to break under a set tension to avoid separation failure. Although this device solves the problem of redundant unlocking of the universal rocket-ground interface, it still has technical problems for the special needs of the rocket fairing air conditioning system: First, the existing device does not consider the sealing requirements after separation. If gas leakage occurs after the fairing is detached from the connecting device, it will still destroy the stability of the internal environment.

[0004] Secondly, when the ground plug of the existing air-conditioning connection device is separated from the socket on the rocket, it is necessary to avoid the components being hooked together and affecting the rocket's takeoff. However, the existing device only relies on the detachment of the sphere to achieve separation, which makes it difficult to ensure the smoothness and reliability of the detachment process.

[0005] Third, the forced breaking function of the existing device relies on the weakening groove integrated in the ball head seat, and the air-conditioning connection device needs to bear both "air-conditioning wind pressure" and "environmental vibration disturbance" at the same time. It is necessary to precisely control the breaking force range to independently break the components in order to balance the "anti-disturbance capability" and "forced breaking reliability". The existing structure is difficult to meet this refined requirement.

[0006] In summary, the existing general rocket-ground locking device cannot meet the comprehensive requirements of the rocket fairing air-conditioning system of "leakage prevention after shedding, zero-second redundant shedding, and adaptation to harsh environments". There is an urgent need for a connection device designed specifically for this scenario to fill the existing technological gap and provide reliable support for the fairing environment protection and launch safety before the rocket launch. Summary of the Invention

[0007] The present invention aims to provide a rocket fairing air conditioning connection device. This device ensures that fairing gas does not leak after being detached. It also adapts to multiple launch site environments through a redundant mechanism of active detachment and passive bolt breakage, and the detachment process does not affect the normal launch of the rocket.

[0008] The technical solution of the present invention is: a rocket fairing air conditioning connection device, comprising an onboard socket and a ground plug; the onboard socket is connected to the rocket fairing, and the ground plug is connected to 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; and further comprising: A ball lock mechanism is provided on the side between the onboard socket and the ground plug, and is used to mechanically lock and unlock the two. The ball lock mechanism includes an onboard locking component and a ground locking component that cooperate with each other. The onboard locking component and the ground locking component are unlocked by active control or passive pulling during rocket launch. The hooking and pulling mechanism is provided between the arrow socket and the ground plug and is arranged opposite to the ball lock mechanism; it is used to cooperate with the ball lock mechanism to maintain the stability of the connection between the arrow socket and the ground plug, and guide the ground plug to rotate and disengage after the ball lock mechanism is unlocked; The self-sealing mechanism is arranged in the arrow socket; the self-sealing mechanism is used to close the air flow channel after the arrow socket is separated from the ground plug.

[0009] The above-mentioned rocket fairing air-conditioning connection device, the arrow-mounted locking component includes a break bolt arranged on the side of the arrow-mounted socket; the ground locking component includes an active disengagement component arranged on the ground plug; the break bolt is provided with a break ring groove; the end of the break bolt is provided with a ball stud, and the ball stud cooperates with the active disengagement component.

[0010] The aforementioned rocket fairing air-conditioning connection device, the active disengagement component includes a first mounting plate arranged on the side of the ground plug, the first mounting plate is provided with a support at one end close to the socket on the rocket, a locking sleeve is slidably connected to the support, a cavity is provided through the locking sleeve, a ball head seat is provided in the cavity, and the ball head seat is fixedly connected to the support; an insertion groove is provided at the end of the ball head seat facing the ball head column, and the insertion groove cooperates with the ball head column; a plurality of ball grooves are provided on the side of the ball head seat, and the ball groove is connected to the insertion groove; a ball is provided in the ball groove; a ring groove is provided on the ball head column; an inner convex ring is provided at one end of the cavity close to the ball head column; when the ball collides with the inner convex ring, its inner end passes through the ball groove and is stuck in the ring groove.

[0011] The aforementioned rocket fairing air-conditioning connection device has a spring retaining ring on the ball head seat, a washer on the outside of the spring retaining ring, a self-locking nut on the outside of the washer, and the self-locking nut is fixedly connected to the ball head seat via threads; a first spring is provided between the spring retaining ring and the inner wall of the cavity, surrounding the outside of the ball head seat.

[0012] The aforementioned rocket fairing air-conditioning connection device has a first circular groove vertically penetrating the support; a first waist-shaped groove vertically penetrating the locking sleeve; a second circular groove vertically penetrating the ball head seat, and the second circular groove has the same diameter as 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 provided in the first circular groove, and the positioning pin penetrates from the outside of the first circular groove on one side, and passes through the first waist-shaped groove and the second circular groove, and then exits from the first circular groove on the other side.

[0013] The aforementioned rocket fairing air conditioning connection device has connecting rods symmetrically arranged on the upper and lower sides of the locking sleeve, and the other end of the connecting rod is provided with a first connecting plate, and the first connecting plate is provided with a first traction rope.

[0014] The aforementioned rocket fairing air-conditioning connection device, the first connecting plate is symmetrically and slidingly connected with the first sliding rod, the second connecting plate is provided 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, the first traction rope passes through the third circular groove and is fixedly connected to the second connecting plate; a second spring is provided between the second connecting plate and the first connecting plate and surrounds the outside of the first sliding rod; a second mounting plate is provided between the second connecting plate and the locking sleeve, and the second mounting plate is rotatably connected with an inverted L-shaped rotating rod, and a shear block is provided at one end of the rotating rod facing the socket on the arrow; the other end of the rotating rod is rotatably connected to the third connecting plate, and the other end of the third connecting plate is rotatably connected to the second connecting plate.

[0015] The aforementioned rocket fairing air-conditioning connection device, the hook-pull mechanism includes a third mounting plate symmetrically arranged on the rocket socket and a mounting block arranged on the ground plug; a clamping shaft is provided between the third mounting plates; the outer side of the mounting block is fixedly connected to a fixing frame by bolts, and a clamping slot is vertically provided on the fixing frame, and an inverted L-shaped hook-pull block is provided in the clamping slot, and a hook-pull groove is provided at one end of the hook-pull block close to the clamping shaft, and the hook-pull groove cooperates with the clamping shaft.

[0016] The aforementioned rocket fairing air-conditioning connection device is provided with a plurality of second waist-shaped grooves on the hook block; the fixing frame is provided with a plurality of first threaded holes, and the first threaded holes correspond to the second waist-shaped grooves; the top of the hook block is provided with a second threaded hole, and the second threaded hole is provided with a tightening bolt, and the inner end of the tightening bolt passes through the second threaded hole and contacts the mounting block.

[0017] The aforementioned rocket fairing air-conditioning connection device, the self-sealing mechanism includes a support frame and a blocking outer ring arranged in the socket on the rocket, the blocking outer ring is located on the outside of the support frame; a third threaded hole is provided on the support frame, and an adjusting bolt is provided on the third threaded hole, and the threaded end of the adjusting bolt passes through the third threaded hole toward the blocking outer ring; a blocking disc is provided between the adjusting bolt and the blocking outer ring, and a second slide rod is provided on the blocking disc; a fourth circular groove is provided on the adjusting bolt; the second slide rod is inserted into the fourth circular groove and slidably connected thereto; an outer convex ring is provided on the threaded end of the adjusting bolt, and a third spring is provided between the outer convex ring and the blocking disc; the diameter of the blocking disc is larger than the inner aperture of the blocking outer ring.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, after the arrow socket and the ground plug are docked, the two need to be connected by manually operating the ball lock mechanism and the hook-pull mechanism. For the ball lock mechanism, the ball head column of the bolt on the side of the arrow socket needs to be matched with the active disengagement component on the ground plug to achieve connection; at the same time, the hook-pull mechanism located on the opposite side of the ball lock mechanism is operated to form an auxiliary connection with the arrow socket. The ball lock mechanism and the hook-pull mechanism are symmetrically coordinated, one main and one auxiliary, which can not only resist the impact load generated by the airflow pressure during the gas transportation process, but also effectively prevent the docking point from loosening and deflecting due to vibration or external force interference, and finally achieve a tight, stable and leak-free connection between the arrow socket and the ground plug, ensuring that the air-conditioning gas is continuously and stably delivered to the fairing. Before the rocket is launched, the active disengagement component is first controlled to disconnect it from the head column. At this time, the connection constraint on one side of the ball lock mechanism is completely released. The ground plug will rotate around the connection point between the hook mechanism and the arrow socket due to the loss of unilateral support. As the ground plug rotates, the connection force balance at the hook mechanism is broken, and the originally tight matching relationship fails due to rotational dislocation. The hook mechanism is then disengaged from the arrow socket, thus completing the active disengagement of the arrow socket from the ground plug. If the active disengagement procedure is not successfully implemented, an upward pulling force will be generated when the rocket is launched and the pulling force will be concentrated on the breaking ring groove. When the pulling force reaches the preset breaking threshold, the breaking ring groove will break, and the breaking bolt will be completely separated from the active disengagement component. At the same time, the hook mechanism will also lose its constraint due to the separation force generated by the broken bolt and disengage, ultimately achieving passive disengagement of the arrow socket from the ground plug. In addition, regardless of whether the separation between the onboard socket and the ground plug is achieved through active or passive separation, the self-sealing mechanism will be activated immediately to quickly seal the interface channel of the onboard socket, effectively preventing the leakage of gas in the fairing that has been adjusted to a suitable temperature and humidity, and continuously maintaining the constant environment required by the equipment in the fairing, providing environmental protection for the final stage before the rocket launch.

[0019] 2. In the ball lock mechanism of the present invention, the locking sleeve is pulled outward to release the interference constraint of the inner convex ring on the ball, and then the ball head column is inserted into the insertion groove, and the first spring is loosened to drive the locking sleeve to reset, so that the inner convex ring squeezes the ball and fits into the ring groove of the ball head column, thereby realizing the connection between the two; when actively disengaging, pulling the first traction rope can drive the second connecting plate and the first connecting plate to move synchronously through the second spring, and then drive the locking sleeve to slide and make the inner convex ring disengage from the ball, thereby realizing rapid unlocking without hard impact; and when active disengagement fails, continuing to pull the first traction rope can cause the second spring to contract, and drive the third connecting plate to rotate the rotating rod through the second connecting plate, so that the shear block applies shear force to the breaking ring groove of the breaking bolt, and uses the stress concentration characteristics of the breaking ring groove to achieve precise disconnection of the bolt, thereby avoiding the risk of dragging when the rocket takes off due to failure to release the connection.

[0020] 3. In the hook-pull mechanism of the present invention, a stable hook-pull fulcrum is formed by fixing the clamping shaft between the third mounting plates. The hook-pull groove of the hook-pull block is then precisely matched with the clamping shaft, and initial positioning is achieved by utilizing the shape constraint of the hook-pull groove. The hook-pull block is then passed through the clamping groove of the fixing frame, and the fixing frame is then connected and fixed to the mounting block. Bolts are inserted through the second waist-shaped groove on the hook-pull block and the first threaded hole on the fixing frame to limit the range of movement of the hook-pull block. At the same time, the tightening bolt at the top of the hook-pull block is rotated so that its inner end contacts the mounting block and generates axial thrust, forcing the hook-pull block to hook the clamping shaft and tighten, ensuring a tight fit between the hook-pull groove and the clamping shaft, significantly improving the stability of the connection and effectively preventing loosening caused by pressure fluctuations during gas delivery. This structural design not only facilitates precise alignment and adjustment during installation, but also forms a synergistic constraint on the opposite side with the ball lock mechanism. While ensuring the overall reliability of the connection between the arrow socket and the ground plug, when disconnection is required, the hook-pull groove can rotate smoothly along the clamping shaft, guiding the ground plug to rotate around the axis for orderly disconnection, thus taking into account both connection stability and disconnection flexibility.

[0021] 4. In the self-sealing mechanism of the present invention, when the air conditioner stops supplying 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 pushed toward the blocking outer ring. At the same time, the third spring always applies an elastic preload to the blocking disc. The two work together to press the blocking disc tightly against the blocking outer ring. By utilizing the structural feature that the diameter of the blocking disc is larger than the inner aperture of the blocking outer ring, the gas in the fairing is effectively sealed to prevent leakage. In addition, by rotating the adjustment bolt on the support frame, the extension length of its threaded end can be changed, thereby adjusting the compression of the third spring between the outer convex ring and the blocking disc, and flexibly adjusting the spring's pressing force on the blocking disc to adapt to the wind pressure requirements of different air conditioners, ensuring stable and reliable sealing performance within the preset wind pressure range. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an installation diagram of the present invention; Figure 2 It is a structural schematic diagram of the present invention; Figure 3 It is a structural schematic diagram of another side of the present invention; Figure 4 It is a structural diagram of the hook and pull mechanism; Figure 5 It is a structural diagram of the active disengagement component; Figure 6 It is a schematic diagram of the structure of the socket on the arrow; Figure 7 It is a cross-sectional view of the socket on the arrow; Figure 8 yes Figure 7 Enlarged schematic diagram of point A.

[0023] The marks in the accompanying drawings are: 1-arrow socket, 2-ground plug, 3-ball lock mechanism, 4-hook and pull mechanism, 5-self-sealing mechanism, 6-connecting block, 7-second traction rope, 40-third mounting plate, 41-mounting block, 42-clamping shaft, 43-fixing frame, 44-clamping groove, 45-hook and pull block, 46-hook and pull groove, 47-second waist-shaped groove, 48-first threaded hole, 49-second threaded hole, 410-tightening bolt, 50-support frame, 51-blocking outer ring, 52-third threaded hole, 53-adjusting bolt, 54-blocking disc, 55-second slide rod, 56-fourth circular groove, 57-outer convex ring, 58-third spring, 300-pull-off bolt, 301-active disengagement component, 302-pull-off ring groove, 303-ball head Column, 304-first mounting plate, 305-support, 306-locking sleeve, 307-cavity, 308-ball head seat, 309-insertion groove, 310-ball groove, 311-ball, 312-annular groove, 313-inner convex ring, 314-spring retaining ring, 315-washer, 316-self-locking nut, 317-first spring, 318-first circular groove, 319-first waist-shaped groove, 320-second circular groove, 321-locating pin, 322-connecting 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-shear block, 332-third connecting plate. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and examples, but they are not intended to limit the present invention.

[0025] Example: A rocket fairing air conditioning connection device, its structure is as follows Figure 1-8As shown, it includes an arrow socket 1 and a ground plug 2; 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 to the rocket fairing inlet through a flange to ensure a rigid connection with the fairing; the ground plug 2 is made of 304 stainless steel, which is rust-proof and adapted to the low temperature environment of the air-conditioning pipeline. It is sealed with the air-conditioning pipeline through flange bolts to ensure that there is no leakage in gas transmission; Figure 2 As shown, the top of the ground plug 2 is provided with a connecting block 6, which is made of 45 steel with quenching and tempering treatment, and has high strength and is not easy to deform. A second traction rope 7 is provided on the connecting block 6. The second traction rope 7 is an aramid fiber rope, which is light and resistant to aging. The other end of the second traction rope 7 is connected to the crane tower for suspending the ground plug 2 to prevent it from falling and being damaged after detachment. The device also includes: The ball lock mechanism 3 is arranged on the side between the arrow socket 1 and the ground plug 2, and is used to realize the mechanical locking and unlocking of the two. The ball lock mechanism 3 includes an arrow locking component and a ground locking component that cooperate with each other. The arrow locking component and the ground locking component are unlocked by active control or passive pulling when the rocket is launched. Figure 2 and Figure 5As shown, the arrow-mounted locking component includes a breaking bolt 300 arranged on the side of the arrow-mounted socket 1. The material of the breaking bolt 300 is 2A12 T4 aluminum alloy. By controlling the composition of the same batch of materials and the heat treatment process, the stability of the mechanical properties is guaranteed; the ground locking component includes an active disengagement component 301 arranged on the ground plug 2; the breaking bolt 300 is provided with a breaking ring groove 302, and the stress concentration effect is used to control the breaking force within a preset range; the end of the breaking bolt 300 is provided with a ball stud 303. The ball stud 303 is made of 14Cr17Ni2 stainless steel, which has the characteristics of high strength and resistance to corrosion in aerospace environments. The ball stud 303 cooperates with the active disengagement component 301. The active disengagement component 301 includes a first mounting plate 304 arranged on the side of the ground plug 2, the first mounting plate 304 is made of 6061 aluminum alloy, which is lightweight and rigid enough; the first mounting plate 304 is provided with a support 305 at one end close to the arrow socket 1, the support 305 is made of QT450 ductile iron, which is wear-resistant and has good shock absorption, and a locking sleeve 306 is slidably connected to the support 305, the locking sleeve 306 is made of 40Cr steel, and the surface is chrome-plated to reduce sliding friction; a cavity 307 is provided through the locking sleeve 306, and a ball head seat 308 is provided in the cavity 307, and the ball head seat 308 is made of 35CrMo alloy steel; the ball head seat 308 is provided with an insert at one end facing the ball head column 303 The groove 309 forms a guiding fit with the ball head column 303, which is convenient for quick docking; the side of the ball head seat 308 is evenly provided with four ball grooves 310 along the circumference, and the ball grooves 310 are connected with the insertion groove 309; the ball groove 310 is provided with a ball 311, and the ball 311 is made of GCr15 bearing steel and is precisely ground to ensure smooth rolling; the ball head column 303 is provided with an annular groove 312, which forms a self-locking fit with the ball 311; the cavity 307 is provided with an inner convex ring 313 at one end close to the ball head column 303, and locking is achieved by squeezing the ball 311; when the ball 311 conflicts with the inner convex ring 313, its inner end passes through the ball groove 310 and is stuck in the annular groove 312, forming a circumferentially uniform locking force.The ball head seat 308 is provided with a spring retaining ring 314 for limiting the displacement of the first spring 317; a washer 315 is provided on the outside of the spring retaining ring 314, and a self-locking nut 316 is provided on the outside of the washer 315, which is fixedly connected to the ball head seat 308 through a thread to prevent vibration loosening; a first spring 317 is provided around the outside of the ball head seat 308 between the spring retaining ring 314 and the inner wall of the cavity 307, and the unlocking force can be adjusted by selecting springs of different wire diameters; a first circular groove 318 is vertically penetrated on the support 305; the locking sleeve 306 is vertically A first waist-shaped groove 319 is provided through the ball head seat 308; a second circular groove 320 is provided vertically through the ball head seat 308, which is coaxial with the first circular groove 318; the horizontal length of the first waist-shaped groove 319 is longer than the first circular groove 318, providing a sliding stroke for the locking sleeve 306; a positioning pin 321 is provided in the first circular groove 318, and the positioning pin 321 passes through the first circular groove 318 and the second circular groove 320 to fix the ball head seat 308 and the support 305, and the first waist-shaped groove 319 limits the movement range of the locking sleeve 306 to prevent it from detaching from the support 305. The locking sleeve 306 is symmetrically provided with connecting rods 322 on the upper and lower sides, and a first connecting plate 323 is provided at the other end of the connecting rod 322, and a first traction rope 324 is provided on the first connecting plate 323; a first sliding rod 325 is symmetrically slidably connected to the first connecting plate 323, and a second connecting plate 326 is provided between the first sliding rod 325, and the second connecting plate 326 is located between the first connecting plate 323 and the locking sleeve 306; a third circular groove 327 is provided on the first connecting plate 323, and the first traction rope 324 passes through the third circular groove 327 and is fixedly connected to the second connecting plate 326; the second connecting plate 326 is fixedly connected to the second connecting plate 326. A second spring 328 is provided between 326 and the first connecting plate 323, which surrounds the outside of the first sliding rod 325; a second mounting plate 329 is provided between the second connecting plate 326 and the locking sleeve 306, and an inverted L-shaped rotating rod 330 is rotatably connected to the second mounting plate 329. The rotating rod 330 is provided with a shear block 331 at one end facing the arrow socket 1. After the shear block 331 rotates, it corresponds to the breaking ring groove 302 and applies shear force to it; the other end of the rotating rod 330 is rotatably connected to the third connecting plate 332, and the other end of the third connecting plate 332 is rotatably connected to the second connecting plate 326.When the locking sleeve 306 is pulled outward, the first spring 317 is compressed and the interference constraint of the inner convex ring 313 on the ball 311 is released. After the ball head column 303 is inserted into the insertion groove 309, it is released. The first spring 317 drives the locking sleeve 306 to reset, and the inner convex ring 313 squeezes the ball 311 and snaps into the annular groove 312 of the ball head column 303 to achieve a self-locking connection; when actively disengaging, the first traction rope 324 is pulled, and the second connecting plate 328 drives 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 lock is released; if the active disengagement fails, continue to pull the first traction rope 324 to make the second spring 328 contract, and drive the rotating rod 330 to rotate through the third connecting plate 332. The shear block 331 applies shear force to the broken annular groove 302, and uses the stress concentration characteristics of the annular groove 312 to achieve precise breaking of the bolt, avoiding the risk of dragging.

[0026] The hooking mechanism 4 is arranged between the arrow socket 1 and the ground plug 2 and is arranged opposite to the ball lock mechanism 3; it is used to cooperate with the ball lock mechanism 3 to maintain the stability of the connection between the arrow socket 1 and the ground plug 2, and guide the ground plug 2 to rotate and disengage after the ball lock mechanism 3 is unlocked; Figure 3 and Figure 4 As shown, the hooking and pulling mechanism 4 includes a third mounting plate 40 symmetrically arranged on the arrow socket 1 and made of Q235 steel plate, and a clamping shaft 42 is provided between the third mounting plates 40, which is made of 40Cr steel and is quenched and tempered. The two ends of the clamping shaft 42 are positioned by shaft shoulders and are bolted to the third mounting plate 40 to form a rigid fulcrum; the ground plug 2 is provided with a mounting block 41 made of 6061 aluminum alloy, and the outer side of the mounting block 41 is fixedly connected to a fixing frame 43 by bolts, and a clamping groove 44 is vertically provided on the fixing frame 43, and an inverted L-shaped hooking and pulling block 45 is provided in the clamping groove 44, which is made of 45 steel and has a hardness of HRC40-45 after quenching. The hooking and pulling block 45 is provided with a hooking groove 46 at one end close to the clamping shaft 42 for hooking the clamping shaft 42. The hook block 45 is provided with two second waist-shaped grooves 47, and the fixing frame 43 has corresponding first threaded holes 48. Bolts are inserted into the matching holes in the two holes to limit the vertical movement range of the hook block 45. The top of the hook block 45 is provided with a second threaded hole 49 and a tightening bolt 410. The inner end of the tightening bolt 410 contacts the mounting block 41, converting the axial force of the bolt into a tightening force on the hook block 45, ensuring a tight fit between the hook groove 46 and the clamping shaft 42. This structure achieves installation alignment through bolt adjustment, forming a contralateral constraint with the ball lock mechanism 3. When disengaging, the hook groove 46 rotates along the clamping shaft 42, guiding the ground plug 2 to disengage in an orderly manner around its axis, ensuring both stability and flexibility.

[0027] The self-sealing mechanism 5 is provided in the arrow socket 1; the self-sealing mechanism 5 is used to seal the air flow channel after the arrow socket 1 is separated from the ground plug 2. Figures 6 to 8As shown, the self-sealing mechanism 5 includes a support frame 50 and a blocking outer ring 51, which is located outside the support frame 50 and is welded and sealed to the inner wall of the arrow-shaped socket 1; a third threaded hole 52 is provided on the support frame 50, and an adjusting bolt 53 is provided, and the threaded end of the adjusting bolt 53 passes through the third threaded hole 52 toward the blocking outer ring 51; a blocking disc 54 is provided between the adjusting bolt 53 and the blocking outer ring 51, and a sealing ring is provided on the edge of the blocking disc 54, and a second slide rod 55 is provided on the blocking disc 54; a fourth circular groove 56 is provided on the adjusting bolt 53, and the second slide rod 55 is inserted into the fourth circular groove 56 and slidably connected thereto to ensure that the axial movement of the blocking disc 54 is smooth; an outer convex ring 57 is provided on the threaded end of the adjusting bolt 53, and a third spring 58 is provided between the outer convex ring 57 and the blocking disc 54; the diameter of the blocking disc 54 is larger than the inner aperture of the blocking outer ring 51 to form a radial seal. When the air conditioner stops delivering air, the air pressure inside the fairing is higher than outside. This pressure differential pushes the blocking disc 54 toward the blocking outer ring 51. Simultaneously, the third spring 58 applies a preload. These two forces work together to tightly fit the blocking disc 54 against the blocking outer ring 51, achieving a gas seal. By rotating the adjustment bolt 53, the compression of the third spring 58 can be varied, flexibly adapting to the air pressure of the air conditioner and ensuring stable sealing performance.

[0028] Working principle: After the arrow socket 1 and the ground plug 2 are docked, the ball lock mechanism 3 and the hook-pull mechanism 4 need to be manually operated to connect the two. For the ball lock mechanism 3, the ball head column 303 of the bolt 300 on the side of the arrow socket 1 is docked with the active disengagement component 301 on the ground plug 2 to form a primary connection; at the same time, the hook-pull mechanism 4 on the opposite side of the ball lock mechanism 3 is operated to form an auxiliary connection with the arrow socket 1. The ball lock mechanism 3 and the hook-pull mechanism 4, one main and one auxiliary, work symmetrically, which can not only resist the impact load generated by the airflow pressure during gas transportation, but also prevent the docking point from loosening or deflecting due to vibration or external force interference, thereby achieving a tight, stable and leak-free connection between the arrow socket 1 and the ground plug 2, ensuring that the air-conditioning gas is continuously and stably delivered to the fairing.

[0029] Before the rocket is launched, the connection is released through active control first: the active separation component 301 is controlled to disconnect from the ball head column 303. At this time, the constraint on one side of the ball lock mechanism 3 is completely released, and the ground plug 2 loses unilateral support and will rotate around the axis around the connection point between the hooking mechanism 4 and the arrow socket 1; as it rotates, the force balance of the hooking mechanism 4 is broken, and the tight fitting relationship fails due to rotational dislocation, and the hooking mechanism 4 is then separated from the arrow socket 1, completing the active separation.

[0030] If the active separation fails, 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, and the breaking bolt 300 is completely separated from the active separation component 301. At the same time, the hooking mechanism 4 loses its constraint due to the separation force generated by the broken bolt and separates, thus achieving passive separation.

[0031] Regardless of active or passive separation, after the onboard socket 1 is separated from the ground plug 2, the self-sealing mechanism 5 is immediately activated to quickly seal the interface channel of the onboard socket 1, preventing the leakage of the gas in the fairing that has been adjusted to a suitable temperature and humidity, and continuously maintaining the constant environment required by the equipment in the fairing, providing environmental protection for the final stage before the rocket launch.

Claims

1. A rocket fairing air conditioning connection device, comprising an onboard socket (1) and a ground plug (2); the onboard socket (1) is connected to the rocket fairing, and the ground plug (2) is connected to an air conditioning pipeline; a connecting block (6) is provided on the top of the ground plug (2), and a second traction rope (7) is provided on the connecting block (6); the characteristics are: Also includes: A ball lock mechanism (3) is provided on the side between the arrow socket (1) and the ground plug (2) for mechanically locking and unlocking the two; the ball lock mechanism (3) comprises an arrow locking component and a ground locking component that cooperate with each other, and the arrow locking component and the ground locking component are unlocked by active control or passive pulling when the rocket is launched; A hooking mechanism (4) is provided between the arrow socket (1) and the ground plug (2) and is arranged opposite to the ball lock mechanism (3); it is used to cooperate with the ball lock mechanism (3) to maintain the connection stability between the arrow socket (1) and the ground plug (2), and to guide the ground plug (2) to rotate and disengage after the ball lock mechanism (3) is unlocked; A self-sealing mechanism (5) is provided in the arrow socket (1); the self-sealing mechanism (5) is used to seal the airflow channel after the arrow socket (1) is separated from the ground plug (2).

2. The rocket fairing air conditioning connection device according to claim 1, characterized in that: The arrow-mounted locking component comprises a breaking bolt (300) arranged on the side of the arrow-mounted socket (1); the ground-mounted locking component comprises an active disengagement component (301) arranged on the ground plug (2); a breaking ring groove (302) is provided on the breaking bolt (300); and a ball stud (303) is provided at the end of the breaking bolt (300), and the ball stud (303) cooperates with the active disengagement component (301).

3. The rocket fairing air conditioning connection device according to claim 2, characterized in that: The active disengagement component (301) includes a first mounting plate (304) arranged on the side of the ground plug (2), a support (305) is provided at one end of the first mounting plate (304) close to the arrow socket (1), a locking sleeve (306) is slidably connected to the support (305), a cavity (307) is provided through the locking sleeve (306), a ball head seat (308) is provided in the cavity (307), and the ball head seat (308) is fixedly connected to the support (305); an insertion groove (308) is provided at one end of the ball head seat (308) facing the ball head column (303) 9), the insertion groove (309) cooperates with the ball head column (303); a plurality of ball grooves (310) are provided on the side of the ball head seat (308), and the ball grooves (310) are connected to the insertion groove (309); a ball (311) is provided in the ball groove (310); an annular groove (312) is provided on the ball head column (303); an inner convex ring (313) is provided at one end of the cavity (307) close to the ball head column (303); when the ball (311) conflicts with the inner convex ring (313), the inner end of the ball (311) passes through the ball groove (310) and is stuck in the annular groove (312).

4. The rocket fairing air conditioning connection device according to claim 3, characterized in that: A spring retaining ring (314) is provided on the ball head seat (308), a washer (315) is provided on the outside of the spring retaining ring (314), a self-locking nut (316) is provided on the outside of the washer (315), and the self-locking nut (316) is fixedly connected to the ball head seat (308) through a thread; a first spring (317) is provided between the spring retaining ring (314) and the inner wall of the cavity (307) and surrounds the outside of the ball head seat (308).

5. The rocket fairing air conditioning connection device according to claim 3, characterized in that: A first circular groove (318) is vertically provided on the support (305); a first waist-shaped groove (319) is vertically provided on the locking sleeve (306); a second circular groove (320) is vertically provided on the ball head seat (308), and 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 that of the first circular groove (318); a positioning pin (321) is provided in the first circular groove (318), and the positioning pin (321) is inserted from the outside of the first circular groove (318) on one side, passes through the first waist-shaped groove (319) and the second circular groove (320), and then passes out from the first circular groove (318) on the other side.

6. The rocket fairing air conditioning connection device according to claim 3, characterized in that: Connecting rods (322) are symmetrically provided on the upper and lower sides of the locking sleeve (306), and a first connecting plate (323) is provided at the other end of the connecting rod (322), and a first traction rope (324) is provided on the first connecting plate (323).

7. The rocket fairing air conditioning connection device according to claim 6, characterized in that: The first connecting plate (323) is symmetrically slidably connected to a first slide bar (325), a second connecting plate (326) is provided between the first slide bar (325), and the second connecting plate (326) is located between the first connecting plate (323) and the locking sleeve (306); a third circular groove (327) is provided on the first connecting plate (323), and the first traction rope (324) passes through the third circular groove (327) and is fixedly connected to the second connecting plate (326); a locking member is provided between the second connecting plate (326) and the first connecting plate (323) A second spring (328) is provided on the outside of the first slide bar (325); a second mounting plate (329) is provided between the second connecting plate (326) and the locking sleeve (306); a rotating rod (330) in an inverted L shape is rotatably connected to the second mounting plate (329); a shear block (331) is provided at one end of the rotating rod (330) facing the arrow socket (1); the other end of the rotating rod (330) is rotatably connected to a third connecting plate (332), and the other end of the third connecting plate (332) is rotatably connected to the second connecting plate (326).

8. The rocket fairing air conditioning connection device according to claim 1, characterized in that: The hooking mechanism (4) comprises a third mounting plate (40) symmetrically arranged on the arrow socket (1) and a mounting block (41) arranged on the ground plug (2); a clamping shaft (42) is provided between the third mounting plates (40); a fixing frame (43) is fixedly connected to the outer side of the mounting block (41) via bolts, a clamping groove (44) is vertically provided on the fixing frame (43), an inverted L-shaped hooking block (45) is provided in the clamping groove (44), and a hooking groove (46) is provided at one end of the hooking block (45) close to the clamping shaft (42), and the hooking groove (46) is matched with the clamping shaft (42).

9. The rocket fairing air conditioning connection device according to claim 8, characterized in that: The hook block (45) is provided with a plurality of second waist-shaped grooves (47); the fixing frame (43) is provided with a plurality of first threaded holes (48), and the first threaded holes (48) correspond to the second waist-shaped grooves (47); a second threaded hole (49) is provided on the top of the hook block (45), and a tightening bolt (410) is provided on the second threaded hole (49), and the inner end of the tightening bolt (410) passes through the second threaded hole (49) and contacts the mounting block (41).

10. The rocket fairing air conditioning connection device according to claim 1, characterized in that: The self-sealing mechanism (5) comprises a support frame (50) and a blocking outer ring (51) arranged in the arrow socket (1), wherein the blocking outer ring (51) is located outside the support frame (50); a third threaded hole (52) is provided on the support frame (50), an adjusting bolt (53) is provided on the third threaded hole (52), and a threaded end of the adjusting bolt (53) passes through the third threaded hole (52) toward the blocking outer ring (51); a blocking disc (54) is provided between the adjusting bolt (53) and the blocking outer ring (51), and a second slide rod (55) is provided on the blocking disc (54); a fourth circular groove (56) is provided on the adjusting bolt (53); the second slide rod (55) is inserted into the fourth circular groove (56) and is slidably connected thereto; an outer convex ring (57) is provided on the threaded end of the adjusting bolt (53), and a third spring (58) is provided between the outer convex ring (57) and the blocking disc (54); the diameter of the blocking disc (54) is larger than the inner hole diameter of the blocking outer ring (51).

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