Self-adaptive floating device for butt joint of gas-liquid connector and rocket interface

Abstract

The invention relates to a self-adaptive floating device for butt joint of a gas-liquid connector and an on-rocket interface. Comprising a gas-liquid connector mounting plate of a square structure, a driving mechanism mounting plate, at least four first elastic rods which are arranged in parallel and located at the four included angles of the gas-liquid connector mounting plate correspondingly, and a retaining mechanism used for providing transverse and longitudinal retaining force for the first elastic rods, and each first elastic rod comprises a first outer cylinder; a first sliding block in sliding fit with the inner side wall of the first outer cylinder is arranged in the first outer cylinder, a first piston rod is mounted on the first sliding block, and the first piston rod is movably connected with the gas-liquid connector mounting plate; one end of the first outer cylinder is in threaded fit with a first adjusting nut, and the other end of the first outer cylinder is movably connected with the driving mechanism mounting plate; a first spring and a second spring are further arranged in the first outer cylinder. According to the invention, high-precision butt joint of the gas-liquid connector and the on-rocket interface can be ensured, and collision damage of the gas-liquid connector or the on-rocket interface can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aerospace technology, in particular to a self-adaptive floating device for the docking of a gas-liquid connector and an on-rocket interface. BACKGROUND

[0002] Before the launch of a rocket, a gas-liquid connector installed at the end of a ground pipeline needs to be precisely docked with an on-rocket interface on the rocket body to complete key tasks such as liquid fuel filling and gas supply.

[0003] Currently, the existing technology usually adopts an automatic docking method, i.e., an external driving mechanism is used to push the gas-liquid connector to dock with the on-rocket interface. However, this method still has the following deficiencies in practical application: 1. The traditional automatic docking technology cannot achieve high-precision docking of the gas-liquid connector and the on-rocket interface, i.e., there is a certain positional deviation between the two, which can result in low docking precision of the gas-liquid connector and the on-rocket interface. If the docking precision is low, the sealing performance will be reduced, and liquid leakage and gas leakage can occur during subsequent liquid fuel filling and gas supply, which cannot guarantee the normal progress of subsequent filling work.

[0004] 2. To achieve unattended operation during the launch of a rocket, the gas-liquid connector and the on-rocket interface usually need to be "zero-second detached". If the docking precision of the gas-liquid connector and the on-rocket interface is low, the risk of detachment jamming will be significantly increased during subsequent zero-second detachment, which will significantly increase the risk of zero-second detachment failure, affecting the safety and reliability of the entire launch mission.

[0005] 3. When the traditional automatic docking technology is used for the docking of the gas-liquid connector and the on-rocket interface, there is a lack of a buffer mechanism between the gas-liquid connector and the on-rocket interface, which can easily result in collision damage of the gas-liquid connector or the on-rocket interface due to the hard collision caused by the docking of the gas-liquid connector and the on-rocket interface.

[0006] Therefore, there is an urgent need for a self-adaptive floating device for the docking of a gas-liquid connector and an on-rocket interface to solve the above-mentioned deficiencies in the existing technology. SUMMARY

[0007] The purpose of the present application is to provide a self-adaptive floating device for the docking of a gas-liquid connector and an on-rocket interface to solve the above-mentioned problems in the existing technology.

[0008] To achieve the above-mentioned purpose, the present application provides the following solutions: The application provides a self-adaptive floating device for the docking of a gas-liquid connector and an on-arrow interface, which comprises a square gas-liquid connector mounting plate, a driving mechanism mounting plate, at least four first elastic rods which are arranged in parallel and are located at four corners of the gas-liquid connector mounting plate respectively, and a retaining mechanism for providing lateral and longitudinal retaining force for the first elastic rods, wherein: The first elastic rod comprises a first outer cylinder, the inside of the first outer cylinder is provided with a first sliding block which is in sliding fit with the inner side wall of the first outer cylinder, a first piston rod which is parallel to the first outer cylinder is mounted on the first sliding block, and the end of the first piston rod which is away from the first sliding block is located outside the first outer cylinder and is movably connected with the gas-liquid connector mounting plate. One end of the first outer cylinder is threadedly fitted with a first adjusting nut which is in sliding fit with the side wall of the first piston rod, and the other end of the first outer cylinder is movably connected with the driving mechanism mounting plate. The inside of the first outer cylinder is further provided with a first spring and a second spring, the two ends of the first spring are respectively in abutment with the first adjusting nut and the first sliding block, the two ends of the second spring are respectively in abutment with the first sliding block and the inner wall of the first outer cylinder which is away from the first adjusting nut, or the sliding fit position of the first sliding block with the first outer cylinder and the sliding fit position of the first piston rod with the first adjusting nut are both sealingly arranged.

[0009] According to one embodiment of the application, a gas-liquid connector mounting hole is formed in the gas-liquid connector mounting plate, and the gas-liquid connector is detachably mounted on the gas-liquid connector mounting plate through the gas-liquid connector mounting hole.

[0010] According to one embodiment of the application, a plurality of driving mechanism mounting flanges are mounted on the driving mechanism mounting plate, and the external driving mechanism is detachably mounted on the driving mechanism mounting plate through the driving mechanism mounting flanges.

[0011] According to one embodiment of the application, a universal joint is mounted on the end of the first piston rod which is located outside the first outer cylinder and the outer wall of the end of the first outer cylinder which is away from the first adjusting nut. The end of the universal joint which is connected with the first piston rod and is away from the first piston rod is connected with the gas-liquid connector mounting plate, and the end of the universal joint which is connected with the first outer cylinder and is away from the first outer cylinder is connected with the driving mechanism mounting plate.

[0012] According to one embodiment of the application, the retaining mechanism at least comprises a second elastic rod, and the second elastic rod is located in the same plane as any two first elastic rods which are arranged along the length direction of the gas-liquid connector mounting plate. The second elastic rod comprises a second outer cylinder, the inside of the second outer cylinder is provided with a second sliding block in sliding fit with the inner side wall thereof, a second piston rod parallel to the second outer cylinder is installed on the second sliding block, and one end of the second piston rod away from the second sliding block is located outside the second outer cylinder; One end of the second outer cylinder is in threaded fit with a second adjusting nut in sliding fit with the side wall of the second piston rod, and the other end of the second outer cylinder is provided with a first adjusting rod, and one end of the first adjusting rod away from the second sliding block is located outside the second outer cylinder; The inside of the second outer cylinder is further provided with a third spring and a fourth spring, the two ends of the third spring are in abutment with the second adjusting nut and the second sliding block respectively, and the two ends of the fourth spring are in abutment with the second sliding block and the inner wall of the second outer cylinder away from the second adjusting nut respectively; One end of the second piston rod located outside the second outer cylinder and one end of the first adjusting rod located outside the second outer cylinder are in limited spherical hinges with any first elastic rod and the driving mechanism mounting plate respectively, so as to provide a horizontal holding force for the first elastic rod.

[0013] According to one embodiment of the present application, the first adjusting rod is in threaded fit on the second outer cylinder, a first locking nut is in threaded fit on the first adjusting rod, one end of the first locking nut close to the second outer cylinder is in abutment on the outer wall of the second outer cylinder, and the thread in threaded fit between the first adjusting rod and the second outer cylinder is in opposite rotation direction with the thread in threaded fit between the first adjusting rod and the first locking nut.

[0014] According to one embodiment of the present application, one end of the second piston rod located outside the second outer cylinder and one end of the first adjusting rod located outside the second outer cylinder are both provided with a first fisheye joint, one end of the second piston rod located outside the second outer cylinder is in limited spherical hinge with any first elastic rod through the first fisheye joint connected therewith, and one end of the first adjusting rod located outside the second outer cylinder is in limited spherical hinge with the driving mechanism mounting plate through the first fisheye joint connected therewith.

[0015] According to one embodiment of the present application, the holding mechanism further comprises a third elastic rod, the third elastic rod is located on the same plane with any two first elastic rods arranged along the width direction of the gas-liquid connector mounting plate; The third elastic rod comprises a third outer cylinder, the inside of the third outer cylinder is provided with a third sliding block in sliding fit with the inner side wall thereof, a third piston rod parallel to the third outer cylinder is installed on the third sliding block, and one end of the third piston rod away from the third sliding block is located outside the third outer cylinder; One end of the third outer cylinder is threadedly fitted with a third adjusting nut in sliding fit with the side wall of the third piston rod, and the other end of the third outer cylinder is provided with a second adjusting rod, one end of the second adjusting rod away from the third sliding block is located outside the third outer cylinder; The interior of the third outer cylinder is further provided with a fifth spring and a sixth spring, two ends of the fifth spring are respectively in abutment with the third adjusting nut and the third sliding block, and two ends of the sixth spring are respectively in abutment with the third sliding block and the inner wall of one end of the third outer cylinder away from the third adjusting nut. One end of the third piston rod located outside the third outer cylinder and one end of the second adjusting rod located outside the third outer cylinder are respectively limited spherical hinges with any one of the first elastic rods and the driving mechanism mounting plate, so as to provide a longitudinal holding force for the first elastic rod.

[0016] According to one embodiment of the present application, the second adjusting rod is threadedly fitted on the third outer cylinder, a second locking nut is threadedly fitted on the second adjusting rod, one end of the second locking nut close to the third outer cylinder is in abutment with the outer wall of the third outer cylinder, and the thread direction of the thread threadedly fitted between the second adjusting rod and the third outer cylinder is opposite to the thread direction of the thread threadedly fitted between the second adjusting rod and the second locking nut.

[0017] According to one embodiment of the present application, one end of the third piston rod located outside the third outer cylinder and one end of the second adjusting rod located outside the third outer cylinder are both provided with a second fish-eye joint, one end of the third piston rod located outside the third outer cylinder is limited spherical hinge with any one of the first elastic rods through the second fish-eye joint connected thereto, and one end of the second adjusting rod located outside the third outer cylinder is limited spherical hinge with the driving mechanism mounting plate through the second fish-eye joint connected thereto.

[0018] Advantages The present application has at least the following technical effects: 1、The present application can smoothly and adaptively adjust the pose of the gas-liquid connector when the gas-liquid connector is docked with the on-arrow interface, thereby ensuring high-precision docking of the gas-liquid connector and the on-arrow interface, ensuring good sealing performance, and preventing liquid leakage and gas leakage during subsequent liquid fuel filling and gas supply, and ensuring normal subsequent filling work.

[0019] 2、The gas-liquid connector and the upper interface of the arrow can be docked with high precision, so that the risk of falling jamming in the subsequent zero-second falling process is not increased, and the risk of zero-second falling failure is not significantly increased, that is, the safety and reliability of the entire launch task are not affected.

[0020] 3、The gas-liquid connector mounting plate, the driving mechanism mounting plate, the first elastic rod and the retaining mechanism are arranged, so that the buffering effect is provided when the gas-liquid connector and the upper interface of the arrow are docked, and the collision damage of the gas-liquid connector or the upper interface of the arrow caused by hard collision can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the overall structure of the present application; Figure 1 It is a schematic diagram of the overall structure of the present application from another angle; Figure 3 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the overall structure of the present application from another angle; Figure 4 It is a schematic diagram of the overall structure of the first elastic rod in the present application; Figure 5 It is a schematic diagram of the overall structure of the present application; Figure 4 It is a schematic diagram of the overall structure of the present application; Figure 6 It is a schematic diagram of the overall structure of the second elastic rod and the third elastic rod in the present application; Figure 7 It is a schematic diagram of the overall structure of the present application; Figure 6 It is a schematic diagram of the overall structure of the present application; Figure 8 It is a schematic diagram of the overall structure of the present application; Figure 9 It is a schematic diagram of the overall structure of the present application.

[0023] Reference Signs List: 1, gas-liquid connector mounting plate; 2, gas-liquid connector mounting hole; 3, universal joint; 4, first elastic rod; 401, first outer cylinder; 402, first piston rod; 403, first sliding block; 404, first adjusting nut; 405, first spring; 406, second spring; 5, driving mechanism mounting plate; 6, second elastic rod; 601, second outer cylinder; 602, second piston rod; 603, second sliding block; 604, second adjusting nut; 605, third spring; 606, fourth spring; 607, first adjusting rod; 608, first locking nut; 7, third elastic rod; 701, third outer cylinder; 702, third piston rod; 703, third sliding block; 704, third adjusting nut; 705, fifth spring; 706, sixth spring; 707, second adjusting rod; 708, second locking nut; 8, connecting sleeve. DETAILED DESCRIPTION

[0024] The features and exemplary embodiments of the various aspects of the present application will be described below in detail, in order to make the purposes, technical solutions and advantages of the present application more clear and apparent, the present application will be further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application, for exemplary illustration of the principles of the present application, and are not configured to limit the present application. In addition, the structural elements in the drawings are not necessarily drawn to scale. For example, the size of some structural elements in the drawings can be enlarged for other structural elements or areas to help understand the embodiments of the present application.

[0025] The orientation words appearing in the following description are the directions shown in the drawings, and are not limited to the specific structure of the embodiments of the present application. In the description of the present application, it should be noted that, unless otherwise specified, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] In addition, the terms "including", "containing", "having" or any other variant thereof are intended to cover non-exclusive inclusion, so that the inclusion of a series of element structures or components not only includes those elements, but also includes other elements not explicitly listed or inherent in the structure, component. Without more limitation, the elements defined by the statement "including" do not exclude the presence of other same elements in the article or device including the elements.

[0027] Spatially relative terms such as "under", "below", "lower", "above", "upper" and the like are used for ease of description to explain the positioning of one element relative to a second element. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements would then be oriented "above" the other elements - the same applies to the "lower" and "upper" and "under" and "above". As such, the device in the figures is turned over, elements described as "below" or "beneath" other elements would then be oriented "above" the other elements - the same applies to the "lower" and "upper" and "under" and "above". Additionally, terms such as "first", "second", and the like can be used herein to describe one element, zone, portion, etc. versus another, not necessarily by order or sequence. Likewise, terms such as "top", "bottom", and the like can be used herein to describe one element, zone, portion, etc. versus another, not necessarily by order or sequence. Similar terms are used throughout the description to describe similar elements.

[0028] The present application can be implemented without some of these specific details for the benefit of the skilled person. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application.

[0029] In the following embodiments, there can be descriptions such as "the device", which the skilled person should understand as meaning the self-adaptive floating device provided by the present application for the gas-liquid connector and the arrow interface to be docked.

[0030] As shown in Figures 1-9 , the present application provides a self-adaptive floating device for the gas-liquid connector and the arrow interface to be docked.

[0031] As shown in Figures 1-3 , the device at least includes a gas-liquid connector mounting plate 1 with a square structure, a driving mechanism mounting plate 5, and at least four first elastic rods 4, wherein: The gas-liquid connector mounting plate 1 is used to mount the gas-liquid connector (not shown in the figure), and the driving mechanism mounting plate 5 is used to connect the driving mechanism (not shown in the figure) outside the device.

[0032] In this embodiment, the gas-liquid connector and the driving mechanism outside the device (hereinafter referred to as the external driving mechanism) are both prior art known in the art, and the external driving mechanism can dock the gas-liquid connector on the arrow interface (not shown in the figure) known in the art through the device (i.e. automatic docking mode), which will not be described in detail here.

[0033] In this embodiment, as shown in Figure 1 , the number of first elastic rods 4 is preferably four.

[0034] The gas-liquid connector mounting plate 1 is or is approximately square structure, four first elastic rods 4 are arranged parallel to each other and are respectively located at the four corners (i.e. four right angles) of the gas-liquid connector mounting plate 1 (i.e. the device includes at least four first elastic rods 4 which are arranged parallel to each other and are respectively located at the four corners of the gas-liquid connector mounting plate 1).

[0035] In this embodiment, as shown in Figure 1 , the gas-liquid connector mounting plate 1 is or is approximately a flat rectangular cuboid structure, which is not particularly limited here.

[0036] As shown in Figure 4 and Figure 5 , the first elastic rod 4 at least includes a first outer cylinder 401, the inside of the first outer cylinder 401 is provided with a first sliding block 403 which is in sliding fit with the inner side wall (i.e. the inner side wall of the first outer cylinder 401), and a first piston rod 402 which is parallel to the first outer cylinder 401 is installed on the first sliding block 403. The end of the first piston rod 402 close to the first sliding block 403 (i.e. the upper right end of the first piston rod 402 in Figure 5 ) is detachably connected with the first sliding block 403, and the end of the first piston rod 402 away from the first sliding block 403 (i.e. the lower left end of the first piston rod 402 in Figure 5 ) is located outside the first outer cylinder 401 and is movably connected with the gas-liquid connector mounting plate 1.

[0037] In this embodiment, the first outer cylinder 401 and the first piston rod 402 can both be or both be approximately cylindrical structure, which is not particularly limited here.

[0038] In this embodiment, the detachable connection between the first piston rod 402 and the first sliding block 403 can be bolted connection known in the art, which is not particularly limited here.

[0039] One end of the first outer cylinder 401 (i.e. the lower left end of the first outer cylinder 401 in Figure 5 ) is threadedly fitted with a first adjusting nut 404 which is in sliding fit with the side wall of the first piston rod 402, and the other end of the first outer cylinder 401 (i.e. the upper right end of the first outer cylinder 401 in Figure 5 ) is movably connected with the driving mechanism mounting plate 5.

[0040] In this embodiment, as shown in Figure 5 , the first piston rod 402 can pass through the middle position of the first adjusting nut 404 as a whole and be in sliding fit with the first adjusting nut 404, thereby realizing the sliding fit of the first adjusting nut 404 with the side wall of the first piston rod 402.

[0041] As shown in Figure 5As shown, the interior of the first outer cylinder 401 is further provided with a first spring 405 and a second spring 406, two ends of the first spring 405 are respectively in abutment with the first adjusting nut 404 and the first sliding block 403, and two ends of the second spring 406 are respectively in abutment with the first sliding block 403 and the inner wall of the end of the first outer cylinder 401 away from the first adjusting nut 404.

[0042] In some embodiments of the present application, the first sliding block 403 can be sealingly arranged at the sliding fit position of the first outer cylinder 401 (i.e. the sliding fit position of the outer side wall of the first sliding block 403 and the inner side wall of the first outer cylinder 401), and the first piston rod 402 can be sealingly arranged at the sliding fit position of the first adjusting nut 404 (i.e. the sliding fit position of the outer side wall of the first piston rod 402 and the middle position of the first adjusting nut 404 through which the first piston rod 402 penetrates), in which case the first spring 405 and the second spring 406 do not need to be arranged in the interior of the first outer cylinder 401, and the elastic force can be provided to the two ends of the first sliding block 403 by using the air pressure at the two ends of the first sliding block 403. For example, when the first sliding block 403 is moved to the upper right direction in Figure 1 , the air at the upper right end of the first sliding block 403 will be compressed, thereby providing the first sliding block 403 with elastic force in the lower left direction, and vice versa, when the first sliding block 403 is moved to the lower left direction in Figure 1 , the air at the lower left end of the first sliding block 403 will provide the first sliding block 403 with elastic force in the upper right direction. As shown in Figure 4 and Figure 5 , the two ends of the side wall of the first outer cylinder 401 are both provided with air passage small tubes, and the air passage small tubes are in communication with the interior of the first outer cylinder 401, and the end of the air passage small tube away from the first outer cylinder 401 is threadedly connected with an air passage small cap. When assembling the first elastic rod 4, for example, when installing the first sliding block 403 in the interior of the first outer cylinder 401, the air passage small cap can not be installed on the air passage small tube in advance to avoid the atmospheric pressure hindering the installation of the first sliding block 403, and after the first sliding block 403 is installed in place, the air passage small cap is threadedly installed on the air passage small tube, thereby successfully assembling the first elastic rod 4.

[0043] Specifically, as shown in Figure 1 , the gas-liquid connector mounting plate 1 is provided with a gas-liquid connector mounting hole 2, and the gas-liquid connector can be detachably mounted on the gas-liquid connector mounting plate 1 through the gas-liquid connector mounting hole 2 (for example, bolt connection known in the art). Figure 1 As shown in , the driving mechanism mounting plate 5 is provided with a plurality of driving mechanism mounting flanges, and the external driving mechanism can be detachably mounted on the driving mechanism mounting plate 5 through the driving mechanism mounting flanges (for example, bolt connection known in the art).

[0044] Figure 1As shown, the number of drive mechanism mounting flanges can be four, and they are installed sequentially and evenly at the end of the drive mechanism mounting plate 5 furthest from the first elastic rod 4 (i.e., Figure 1 Top of the middle drive mechanism mounting plate 5).

[0045] Specifically, such as Figure 1 As shown, universal joints 3 are installed on the outer walls of the first piston rod 402 located outside the first outer cylinder 401 and the first outer cylinder 401 located away from the first adjusting nut 404 (see reference). Figure 8 ),in: The universal joint 3 (i.e., connected to the first piston rod 402) Figure 1 The four universal joints 3 at the bottom center are connected at the ends away from the first piston rod 402 and to the gas-liquid connector mounting plate 1 (i.e., the first piston rod 402 is movably connected to the gas-liquid connector mounting plate 1), and the universal joints 3 connected to the first outer cylinder 401 are... Figure 1 The four universal joints 3 at the top center are connected to the drive mechanism mounting plate 5 at the end away from the first outer cylinder 401 (that is, the first outer cylinder 401 is movably connected to the drive mechanism mounting plate 5).

[0046] In one embodiment of the present invention, the device further includes a retaining mechanism capable of providing lateral and longitudinal retaining forces to the first elastic rod 4, that is, the retaining mechanism is capable of providing lateral (i.e., longitudinal) retaining forces to the first elastic rod 4. Figure 1 The rectangular gas-liquid connector mounting plate 1 has a length direction and a longitudinal direction (i.e., along the length direction). Figure 1 The holding force of the square gas-liquid connector mounting plate 1 in the width direction.

[0047] Specifically, such as Figures 1-3 As shown, the retaining mechanism includes at least a second elastic rod 6, and the second elastic rod 6 and any two first elastic rods 4 arranged along the length direction of the gas-liquid connector mounting plate 1 are all located on the same plane (see reference). Figure 1 ).

[0048] In this embodiment, since the four first elastic rods 4 are all arranged parallel to each other, any two first elastic rods 4 arranged along the length of the gas-liquid connector mounting plate 1 will also be arranged parallel to each other. Since a unique plane is defined between two parallel objects, a unique plane is also defined between any two first elastic rods 4 arranged along the length of the gas-liquid connector mounting plate 1, and the second elastic rod 6 will be located entirely on this plane (that is, the second elastic rod 6 and any two first elastic rods 4 arranged along the length of the gas-liquid connector mounting plate 1 are all located on the same plane).

[0049] More specifically, such as Figure 6 and Figure 7As shown, the second elastic rod 6 includes at least a second outer cylinder 601. Inside the second outer cylinder 601, a second sliding block 603 is provided that slides against its inner sidewall (i.e., the inner sidewall of the second outer cylinder 601). A second piston rod 602, parallel to the second outer cylinder 601, is mounted on the second sliding block 603. One end of the second piston rod 602 is closer to the second sliding block 603 (i.e.,...). Figure 7 The upper right end of the first piston rod 402 is detachably connected to the second sliding block 603, and the end of the second piston rod 602 away from the second sliding block 603 (i.e., Figure 7 The lower left end of the first piston rod 402 is located outside the second outer cylinder 601.

[0050] In this embodiment, the second outer cylinder 601 and the second piston rod 602 can both be or both be approximately cylindrical structures, and no particular limitation is made here.

[0051] In this embodiment, the detachable connection between the second piston rod 602 and the second sliding block 603 can be a bolted connection known in the art, and is not particularly limited here.

[0052] One end of the second outer cylinder 601 (i.e. Figure 7 The lower left end of the second outer cylinder 601 is threaded with a second adjusting nut 604 that slides against the side wall of the second piston rod 602. The other end of the second outer cylinder 601 (i.e. Figure 7 A first adjusting rod 607 is installed at the upper right end of the second outer cylinder 601. The end of the first adjusting rod 607 away from the second sliding block 603 (i.e. Figure 7 The upper right end of the first adjusting rod 607 is located outside the second outer cylinder 601.

[0053] In this embodiment, the first adjusting rod 607 can be or is approximately cylindrical, and the diameter of the first adjusting rod 607 can be the same as or approximately the same as the diameter of the second piston rod 602, without any particular limitation.

[0054] Preferably, such as Figure 7 As shown, the first adjusting rod 607 can be coaxially arranged with the second piston rod 602.

[0055] like Figure 7 As shown, the second outer cylinder 601 is also provided with a third spring 605 and a fourth spring 606. The two ends of the third spring 605 abut against the second adjusting nut 604 and the second sliding block 603 respectively. The two ends of the fourth spring 606 abut against the inner wall of the second sliding block 603 and the end of the second outer cylinder 601 away from the second adjusting nut 604 respectively.

[0056] One end of the second piston rod 602 located outside the second outer cylinder 601 and the other end of the first adjusting rod 607 located outside the second outer cylinder 601 are respectively connected to any one of the first elastic rods 4 and the drive mechanism mounting plate 5 by a restricted ball joint, so as to provide a lateral holding force for the first elastic rod 4.

[0057] Specifically, such as Figure 6 and Figure 7 As shown, both the end of the second piston rod 602 located outside the second outer cylinder 601 and the end of the first adjusting rod 607 located outside the second outer cylinder 601 are equipped with a first spherical connector. That is, the end of the second piston rod 602 located outside the second outer cylinder 601 can be connected to any one of the first elastic rods 4 via the first spherical connector (i.e., the second piston rod 602) and a restricted ball joint, and the end of the first adjusting rod 607 located outside the second outer cylinder 601 can be connected to the first spherical connector (i.e., the first adjusting rod 607) via the first spherical connector (i.e., the first adjusting rod 607) and a restricted ball joint of the drive mechanism mounting plate 5.

[0058] Conversely, the end of the second piston rod 602 located outside the second outer cylinder 601 can also be restricted by a ball joint connected to it (i.e., the second piston rod 602) and the drive mechanism mounting plate 5, and the end of the first adjusting rod 607 located outside the second outer cylinder 601 can also be restricted by a ball joint connected to it (i.e., the first adjusting rod 607) and any one of the first elastic rods 4, without any particular limitation.

[0059] In this embodiment, the fisheye joint (i.e. the first fisheye joint mentioned above) is a prior art known in the art, and the first fisheye joint and the components connected to it (i.e. any one of the first elastic rods 4 and the drive mechanism mounting plate 5 mentioned above) can form a "ball joint-fisheye composite joint" (i.e. the restricted ball joint mentioned above) known in the art, which will not be elaborated here.

[0060] In this embodiment, in order to better provide lateral holding force for the first elastic rod 4, such as Figure 1 As shown, the number of second elastic rods 6 can be two. The two second elastic rods 6 are located at... Figure 1 The bottom ends of the first elastic rods 4 are respectively constrained by ball joints at the bottom ends of any two first elastic rods 4 arranged along the length direction of the gas-liquid connector mounting plate 1, and the two second elastic rods 6 are located at the bottom ends of the first elastic rods 4. Figure 1 The top of each ball joint is located approximately at the middle position of the bottom edge of the drive mechanism mounting plate 5 (e.g., Figure 1 As shown, the two first elastic rods 4 at the edge correspond to the midpoint of the positions of the two first elastic rods 4 provided on the gas-liquid connector mounting plate 1, and the two second elastic rods 6 are symmetrically arranged with respect to a centerline parallel to the width direction of the gas-liquid connector mounting plate 1 (i.e., as shown). Figure 1 As shown, the two second elastic rods 6 are in Figure 1The two second elastic rods 6 will be connected with the two first elastic rods 4 arranged along the length direction of the gas-liquid connector mounting plate 1 respectively, and the two first elastic rods 4 connected with the two second elastic rods 6 respectively will determine a unique plane, and the two second elastic rods 6 will be located on the unique plane as a whole.

[0061] In the embodiment, as shown in Figure 1 , the two second elastic rods 6 will be connected with the two first elastic rods 4 arranged along the length direction of the gas-liquid connector mounting plate 1 respectively, and the two first elastic rods 4 connected with the two second elastic rods 6 respectively will determine a unique plane, and the two second elastic rods 6 will be located on the unique plane as a whole.

[0062] In the embodiment, in order to adjust the length of the second elastic rod 6 more conveniently, as shown in Figure 7 , the first adjusting rod 607 is screwed on the second outer cylinder 601, and the first adjusting rod 607 is screwed with the first locking nut 608, and the end of the first locking nut 608 close to the second outer cylinder 601 (i.e. the lower left end of the first locking nut 608) abuts against the outer wall of the right upper end of the second outer cylinder 601. Figure 7 Figure 7 In the embodiment, since the first adjusting rod 607 is screwed on the second outer cylinder 601, rotating the first adjusting rod 607 can adjust the position of the first adjusting rod 607 (i.e. adjust the length of the second elastic rod 6). When the adjustment is completed, since the thread between the first adjusting rod 607 and the second outer cylinder 601 is opposite to the thread between the first adjusting rod 607 and the first locking nut 608 (i.e. one is left-handed thread and the other is right-handed thread), when the first locking nut 608 is rotated to abut against the outer wall of the second outer cylinder 601, the locking of the first adjusting rod 607 can be completed.

[0063] In the embodiment, since the first adjusting rod 607 is screwed on the second outer cylinder 601, rotating the first adjusting rod 607 can adjust the position of the first adjusting rod 607 (i.e. adjust the length of the second elastic rod 6). When the adjustment is completed, since the thread between the first adjusting rod 607 and the second outer cylinder 601 is opposite to the thread between the first adjusting rod 607 and the first locking nut 608 (i.e. one is left-handed thread and the other is right-handed thread), when the first locking nut 608 is rotated to abut against the outer wall of the second outer cylinder 601, the locking of the first adjusting rod 607 can be completed.

[0064] Specifically, as shown in Figures 1-3 , the retaining mechanism further comprises a third elastic rod 7, and the third elastic rod 7 is located on the same plane as any two first elastic rods 4 arranged along the width direction of the gas-liquid connector mounting plate 1 (for reference Figure 3 ).

[0065] ​In the embodiment, since the four first elastic rods 4 are arranged parallel to each other, any two first elastic rods 4 arranged along the width direction of the gas-liquid connector mounting plate 1 are also arranged parallel to each other. Since a unique plane is determined between two parallel objects, a unique plane is also determined between any two first elastic rods 4 arranged along the width direction of the gas-liquid connector mounting plate 1, and the third elastic rod 7 is located on the plane as a whole (i.e., the third elastic rod 7 and any two first elastic rods 4 arranged along the width direction of the gas-liquid connector mounting plate 1 are located on the same plane).

[0066] More specifically, as shown in Figure 6 and Figure 7 , the third elastic rod 7 at least comprises a third outer cylinder 701, and the third outer cylinder 701 is internally provided with a third sliding block 703 in sliding fit with the inner side wall of the third outer cylinder 701 (i.e., the inner side wall of the third outer cylinder 701). A third piston rod 702 parallel to the third outer cylinder 701 is mounted on the third sliding block 703, and the end of the third piston rod 702 close to the third sliding block 703 (i.e., the upper right end of the third piston rod 702 in Figure 7 ) is detachably connected to the third sliding block 703, and the end of the third piston rod 702 away from the third sliding block 703 (i.e., the lower left end of the first piston rod 402 in Figure 7 ) is located outside the third outer cylinder 701.

[0067] In the embodiment, the third outer cylinder 701 and the third piston rod 702 can both be or both substantially be cylindrical structures, which are not particularly limited herein.

[0068] In the embodiment, the detachable connection between the third piston rod 702 and the third sliding block 703 can be a bolt connection known in the art, which is not particularly limited herein.

[0069] One end of the third outer cylinder 701 (i.e., the lower left end of the third outer cylinder 701 in Figure 7 ) is threadedly fitted with a third adjusting nut 704 in sliding fit with the side wall of the third piston rod 702, and the other end of the third outer cylinder 701 (i.e., the upper right end of the third outer cylinder 701 in Figure 7 ) is mounted with a second adjusting rod 707, and the end of the second adjusting rod 707 away from the third sliding block 703 (i.e., the upper right end of the second adjusting rod 707 in Figure 7 ) is located outside the third outer cylinder 701.

[0070] In the embodiment, the second adjusting rod 707 can be or substantially be a cylindrical structure, and the diameter of the second adjusting rod 707 can be the same as or substantially the same as the diameter of the third piston rod 702, which is not particularly limited herein.

[0071] Preferably, as shown in Figure 7As shown, the second adjusting rod 707 can be coaxially arranged with the third piston rod 702.

[0072] As shown, the third outer cylinder 701 is internally arranged with a fifth spring 705 and a sixth spring 706. The two ends of the fifth spring 705 are respectively in abutment with the third adjusting nut 704 and the third sliding block 703, and the two ends of the sixth spring 706 are respectively in abutment with the third sliding block 703 and the inner wall of the third outer cylinder 701 away from the third adjusting nut 704. Figure 7

[0073] The end of the third piston rod 702 located outside the third outer cylinder 701 and the end of the second adjusting rod 707 located outside the third outer cylinder 701 are respectively limited spherical hinges with any one of the first elastic rod 4 and the driving mechanism mounting plate 5, which can be used to provide the first elastic rod 4 with longitudinal holding force.

[0074] Specifically, as shown in Figure 6 and Figure 7 The end of the third piston rod 702 located outside the third outer cylinder 701 and the end of the second adjusting rod 707 located outside the third outer cylinder 701 are respectively installed with a second fish-eye joint. That is, the end of the third piston rod 702 located outside the third outer cylinder 701 can be limited spherical hinge with any one of the first elastic rod 4 through the second fish-eye joint connected with it (i.e. the third piston rod 702), and the end of the second adjusting rod 707 located outside the third outer cylinder 701 can be limited spherical hinge with the driving mechanism mounting plate 5 through the second fish-eye joint connected with it (i.e. the second adjusting rod 707).

[0075] Conversely, the end of the third piston rod 702 located outside the third outer cylinder 701 can also be limited spherical hinge with the driving mechanism mounting plate 5 through the second fish-eye joint connected with it (i.e. the third piston rod 702), and the end of the second adjusting rod 707 located outside the third outer cylinder 701 can also be limited spherical hinge with any one of the first elastic rod 4 through the second fish-eye joint connected with it (i.e. the second adjusting rod 707), which is not particularly limited here.

[0076] In this embodiment, the fish-eye joint (i.e. the second fish-eye joint mentioned above) is a prior art known in the art, and the second fish-eye joint can constitute a "spherical hinge-fish-eye composite joint" (i.e. the limited spherical hinge mentioned above) with the components connected with it (i.e. any one of the first elastic rod 4 and the driving mechanism mounting plate 5 mentioned above), which will not be described in detail here.

[0077] In this embodiment, in order to better provide the first elastic rod 4 with longitudinal holding force, as shown in Figure 1 The number of third elastic rods 7 can be two, and the two third elastic rods 7 are symmetrically arranged with the center line parallel to the width direction of the gas-liquid connector mounting plate 1, and the two third elastic rods 7 are located Figure 1 ​The bottom ends of the two first elastic rods 4 are respectively restricted ball joints with the two second elastic rods 6, and the two third elastic rods 7 are located at the bottom ends of the two first elastic rods 4. Figure 1 The top of each component is restricted by a ball joint at the bottom of the drive mechanism mounting plate 5, and both third elastic rods 7 are inclined.

[0078] Since there are four first elastic rods 4 in this embodiment, there will be two sets of first elastic rods 4 arranged along the width direction of the gas-liquid connector mounting plate 1. That is, the two sets of first elastic rods 4 arranged along the width direction of the gas-liquid connector mounting plate 1 will respectively determine two unique planes, and the two third elastic rods 7 will be located on the two unique planes determined above.

[0079] In this embodiment, to more conveniently adjust the length of the third elastic rod 7, such as... Figure 7 As shown, the second adjusting rod 707 is threaded onto the third outer cylinder 701. A second locking nut 708 is threaded onto the second adjusting rod 707, with the second locking nut 708 located at one end near the third outer cylinder 701 (i.e., Figure 7 The lower left end of the second locking nut 708 abuts against the third outer cylinder 701. Figure 7 On the outer wall at the upper right end. The thread of the threaded engagement between the second adjusting rod 707 and the third outer cylinder 701 is opposite in direction to the thread of the threaded engagement between the second adjusting rod 707 and the second locking nut 708.

[0080] In this embodiment, since the second adjusting rod 707 is threaded onto the third outer cylinder 701, rotating the second adjusting rod 707 allows for adjustment of its position (i.e., adjustment of the length of the third elastic rod 7). After adjustment, since the threads of the second adjusting rod 707 and the third outer cylinder 701 are opposite in direction to the threads of the second adjusting rod 707 and the second locking nut 708 (i.e., one is a left-hand thread and the other is a right-hand thread), rotating the second locking nut 708 until it abuts against the outer wall of the third outer cylinder 701 completes the locking of the second adjusting rod 707.

[0081] In this embodiment, as Figure 1 As shown, the two first elastic rods 4 of the ball joint with the second elastic rod 6 and the third elastic rod 7 are located at... Figure 1 The bottom end of each of the two first elastic rods 4 is fitted with a connecting sleeve 8 (that is, the connecting sleeve 8 is respectively fitted on the first outer cylinder 401 of the two first elastic rods 4). Figure 1 (At the bottom of the middle). Among them, the second elastic rod 6, which is connected to the first elastic rod 4 via a connecting sleeve 8, is connected to the first elastic rod 4 via a connecting sleeve 8. The third elastic rod 7, which is connected to the first elastic rod 4 via a connecting sleeve 8, is connected to the first elastic rod 4 via a connecting sleeve 8.

[0082] In the embodiment, the first outer sleeve 401 of the two first elastic rods 4 can be a micro-interference fit (i.e., the fit amount can be 0.01mm-0.05mm, which is not particularly limited here).

[0083] In the embodiment, it should be understood that, since the second elastic rod 6 and the third elastic rod 7 have the same structure, Figure 6 and Figure 7 At the same time, the overall structure of the second elastic rod 6 and the third elastic rod 7 is shown, that is, referring to Figure 6 and Figure 7 The overall structure of the second elastic rod 6 and the third elastic rod 7 can be understood at the same time.

[0084] The working process of the device will be described below in combination with the above embodiment: First, the device is assembled. After assembly is complete, the gas-liquid connector outside the device and its pipeline (not shown in the figure and known in the art) are bolted to the gas-liquid connector mounting plate 1 through the gas-liquid connector mounting hole 2, and the driving mechanism outside the device is installed on the driving mechanism mounting plate 5 through the four driving mechanism mounting flanges. After installation is complete, self-checking test work is performed on the external gas-liquid connector, the external driving mechanism, and the arrow interface. How to perform self-checking test work is known in the art as prior art, and will not be described here.

[0085] In the above content, as Figure 1 shown, the gas-liquid connector mounting plate 1 and the driving mechanism mounting plate 5 are both provided with holes (hereinafter referred to as pipeline placement holes) that can accommodate the pipeline on the gas-liquid connector, so the pipeline on the gas-liquid connector can be placed in the pipeline placement hole.

[0086] Then, adjust the initial position of the gas-liquid connector mounting plate 1 and the driving mechanism mounting plate 5 before docking, and adjust the gas-liquid connector mounting plate 1 and the driving mechanism mounting plate 5 to be parallel and horizontal (i.e., adjust the four first elastic rods 4 to be parallel to each other), and the specific adjustment method includes but is not limited to: The first step, respectively, screw the first adjusting nut 404 on the four first elastic rods 4, can be adjusted to the overall length of the four first elastic rods 4 (that is, the position of the first piston rod 402 relative to the first outer cylinder 401 is adjusted). When the four first elastic rods 4 are adjusted to the same length, that is, the adjustment of the four first elastic rods 4 is completed. When the first adjusting nut 404 is screwed towards the inside of the first outer cylinder 401, the first adjusting nut 404 will simultaneously extrude the first spring 405 and the second spring 406, and at the same time, the first sliding block 403 will move towards the inside of the first outer cylinder 401 (that is, the first piston rod 402 moves towards the inside of the first outer cylinder 401); when the first adjusting nut 404 is screwed towards the outside of the first outer cylinder 401, the first spring 405 and the second spring 406 will be simultaneously elongated, thereby moving the first sliding block 403 towards the outside of the first outer cylinder 401 (that is, the first piston rod 402 moves towards the outside of the first outer cylinder 401).

[0087] In the above process, since the spring will store elastic potential energy when compressed and release elastic potential energy when elongated, and because the shorter the overall length of the first elastic rod 4, the greater the internal elastic potential energy, and vice versa, if the overall length of the first elastic rod 4 is longer, the internal elastic potential energy is smaller, therefore, according to the actual work needs, the first elastic rod 4 can be adjusted to different lengths (it should be understood that the different lengths here refer to the adjustment of the overall length of the four first elastic rods 4 respectively, and the lengths of the four first elastic rods 4 after adjustment are still the same, to ensure that the gas-liquid connector mounting plate 1 and the driving mechanism mounting plate 5 are parallel and horizontal), thereby the overall elastic force of the first elastic rod 4 can be adjusted to meet different work needs.

[0088] The second step, while performing the first step, respectively, screw the second adjusting nut 604 in the second elastic rod 6 and the third adjusting nut 704 in the third elastic rod 7, to respectively adjust the overall length of the two second elastic rods 6 and the overall length of the third elastic rod 7 (that is, respectively adjust the position of the second piston rod 602 relative to the second outer cylinder 601, the position of the third piston rod 702 relative to the third outer cylinder 701). Among them, since the first adjusting rod 607 and the second adjusting rod 707 are respectively screwed with the second outer cylinder 601 and the third outer cylinder 701, the first adjusting rod 607 and the second adjusting rod 707 can be respectively screwed to adjust the overall length of the second elastic rod 6 and the overall length of the third elastic rod 7.

[0089] Finally, after the above steps are completed, the docking of the gas-liquid connector and the rocket interface can be carried out. The external driving mechanism of the device receives the docking instruction sent by the external automatic docking system (not shown in the figure and known in the art), and then drives the gas-liquid connector installed on the device to move towards the rocket interface. When the guide rod on the gas-liquid connector enters the guide rod of the rocket interface, the first elastic rod 4, the second elastic rod 6 and the third elastic rod 7 in the device will synchronously perform elastic extension and contraction, so as to smoothly and adaptively adjust the pose of the gas-liquid connector, that is, to ensure high-precision docking of the gas-liquid connector and the rocket interface, to ensure good sealing performance, and to prevent liquid leakage and gas leakage during subsequent liquid fuel filling and gas supply, to ensure the normal progress of subsequent filling work, and to prevent the risk of falling jamming during subsequent zero-second falling, thereby preventing the risk of zero-second falling failure, that is, preventing the safety and reliability of the entire launch task from being affected. At the same time, by smoothly and adaptively adjusting the pose of the gas-liquid connector, a buffering effect can be provided when the gas-liquid connector and the rocket interface are docked, so as to avoid collision damage of the gas-liquid connector or the rocket interface caused by hard collision.

[0090] In addition, after the gas-liquid connector and the rocket interface are docked, that is, when the propellant in the gas-liquid connector fills the liquid fuel and the gas in the rocket interface, the device can also adapt to the position change of the rocket interface caused by rocket filling deformation and wind load, that is, realize the follow-up function of the gas-liquid connector relative to the rocket interface, and further ensure the reliability of the docking seal.

[0091] In addition, the device can be applied not only to the "zero-second falling" working scenario, but also to the "premature falling" working scenario, that is, the gas-liquid connector is detached before the rocket is launched, and the gas-liquid connector is re-docked by using the automatic docking technology known in the art. Therefore, whether the device is applied to the "zero-second falling" or "premature falling" working scenario, the above technical effects can be achieved, and details are not described here.

[0092] It should be understood that the above embodiments or examples of the present application can be combined with each other, and have corresponding technical effects.

[0093] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An adaptive floating device for docking a gas-liquid connector with an interface on an arrow, characterized in that, The device includes a square-structured gas-liquid connector mounting plate (1), a drive mechanism mounting plate (5), at least four first elastic rods (4) arranged parallel to each other and located at the four included corners of the gas-liquid connector mounting plate (1), and a retaining mechanism for providing lateral and longitudinal retaining forces to the first elastic rods (4), wherein: The first elastic rod (4) includes a first outer cylinder (401), and a first sliding block (403) is provided inside the first outer cylinder (401) and slides against its inner side wall. A first piston rod (402) parallel to the first outer cylinder (401) is installed on the first sliding block (403). One end of the first piston rod (402) away from the first sliding block (403) is located outside the first outer cylinder (401) and is movably connected to the gas-liquid connector mounting plate (1). One end of the first outer cylinder (401) is threaded with a first adjusting nut (404) that slides with the side wall of the first piston rod (402), and the other end of the first outer cylinder (401) is movably connected to the drive mechanism mounting plate (5). The first outer cylinder (401) is also provided with a first spring (405) and a second spring (406). The two ends of the first spring (405) abut against the first adjusting nut (404) and the first sliding block (403) respectively. The two ends of the second spring (406) abut against the inner wall of the first sliding block (403) and the first outer cylinder (401) away from the first adjusting nut (404) respectively. Alternatively, the sliding engagement of the first sliding block (403) and the first outer cylinder (401) and the sliding engagement of the first piston rod (402) and the first adjusting nut (404) are all sealed.

2. The adaptive floating device for docking the gas-liquid connector with the arrow interface according to claim 1, characterized in that, The gas-liquid connector mounting plate (1) is provided with a gas-liquid connector mounting hole (2), and the gas-liquid connector can be detachably mounted on the gas-liquid connector mounting plate (1) through the gas-liquid connector mounting hole (2).

3. The adaptive floating device for docking the gas-liquid connector with the arrow interface according to claim 1, characterized in that, The drive mechanism mounting plate (5) is equipped with several drive mechanism mounting flanges, and the external drive mechanism can be detachably mounted on the drive mechanism mounting plate (5) through the drive mechanism mounting flanges.

4. The adaptive floating device for docking the gas-liquid connector with the arrow interface according to claim 1, characterized in that, Universal joints (3) are installed on the outer wall of the first piston rod (402) located outside the first outer cylinder (401) and the outer wall of the first outer cylinder (401) located away from the first adjusting nut (404). The end of the universal joint (3) connected to the first piston rod (402) away from the first piston rod (402) is connected to the gas-liquid connector mounting plate (1), and the end of the universal joint (3) connected to the first outer cylinder (401) away from the first outer cylinder (401) is connected to the drive mechanism mounting plate (5).

5. The adaptive floating device for docking the gas-liquid connector with the arrow interface according to claim 1, characterized in that, The retaining mechanism includes at least a second elastic rod (6), and the second elastic rod (6) and any two first elastic rods (4) arranged along the length direction of the gas-liquid connector mounting plate (1) are located on the same plane; The second elastic rod (6) includes a second outer cylinder (601), and a second sliding block (603) is provided inside the second outer cylinder (601) and slides against its inner side wall. A second piston rod (602) parallel to the second outer cylinder (601) is installed on the second sliding block (603), and one end of the second piston rod (602) away from the second sliding block (603) is located outside the second outer cylinder (601). One end of the second outer cylinder (601) is threaded with a second adjusting nut (604) that slides against the side wall of the second piston rod (602), and the other end of the second outer cylinder (601) is equipped with a first adjusting rod (607), with the end of the first adjusting rod (607) away from the second sliding block (603) located outside the second outer cylinder (601); The second outer cylinder (601) is also provided with a third spring (605) and a fourth spring (606). The two ends of the third spring (605) abut against the second adjusting nut (604) and the second sliding block (603) respectively. The two ends of the fourth spring (606) abut against the inner wall of the second sliding block (603) and the end of the second outer cylinder (601) away from the second adjusting nut (604) respectively. The end of the second piston rod (602) located outside the second outer cylinder (601) and the end of the first adjusting rod (607) located outside the second outer cylinder (601) are respectively connected to either the first elastic rod (4) and the drive mechanism mounting plate (5) by a restricted ball joint to provide a lateral holding force for the first elastic rod (4).

6. The adaptive floating device for docking the gas-liquid connector with the arrow interface according to claim 5, characterized in that, The first adjusting rod (607) is threaded onto the second outer cylinder (601), and a first locking nut (608) is threaded onto the first adjusting rod (607). The end of the first locking nut (608) near the second outer cylinder (601) abuts against the outer wall of the second outer cylinder (601). The thread of the threaded engagement between the first adjusting rod (607) and the second outer cylinder (601) has the opposite direction of rotation to the thread of the threaded engagement between the first adjusting rod (607) and the first locking nut (608).

7. The adaptive floating device for docking the gas-liquid connector with the arrow interface according to claim 5, characterized in that, The second piston rod (602) is equipped with a first fisheye connector at one end outside the second outer cylinder (601) and the first adjusting rod (607) is equipped with a first fisheye connector at one end outside the second outer cylinder (601). The second piston rod (602) is connected to the first fisheye connector and any of the first elastic rods (4) through a restricted ball joint. The first adjusting rod (607) is connected to the first fisheye connector and the drive mechanism mounting plate (5) through a restricted ball joint.

8. The adaptive floating device for docking a gas-liquid connector with an interface on an arrow according to claim 1, characterized in that, The retaining mechanism further includes a third elastic rod (7), which is located on the same plane as any two first elastic rods (4) arranged along the width direction of the gas-liquid connector mounting plate (1); The third elastic rod (7) includes a third outer cylinder (701), and a third sliding block (703) is provided inside the third outer cylinder (701) and slides against its inner side wall. A third piston rod (702) parallel to the third outer cylinder (701) is installed on the third sliding block (703), and one end of the third piston rod (702) away from the third sliding block (703) is located outside the third outer cylinder (701). One end of the third outer cylinder (701) is threaded with a third adjusting nut (704) that slides with the side wall of the third piston rod (702), and the other end of the third outer cylinder (701) is equipped with a second adjusting rod (707), the end of the second adjusting rod (707) away from the third sliding block (703) being located outside the third outer cylinder (701); The interior of the third outer cylinder (701) is also provided with a fifth spring (705) and a sixth spring (706). The two ends of the fifth spring (705) abut against the third adjusting nut (704) and the third sliding block (703) respectively. The two ends of the sixth spring (706) abut against the inner wall of the third sliding block (703) and the end of the third outer cylinder (701) away from the third adjusting nut (704) respectively. The end of the third piston rod (702) located outside the third outer cylinder (701) and the end of the second adjusting rod (707) located outside the third outer cylinder (701) are respectively connected to either the first elastic rod (4) and the drive mechanism mounting plate (5) by a restricted ball joint to provide a longitudinal holding force for the first elastic rod (4).

9. The adaptive floating device for docking a gas-liquid connector with an interface on an arrow, as described in claim 8, is characterized in that... The second adjusting rod (707) is threaded onto the third outer cylinder (701), and a second locking nut (708) is threaded onto the second adjusting rod (707). The end of the second locking nut (708) near the third outer cylinder (701) abuts against the outer wall of the third outer cylinder (701). The thread of the threaded engagement between the second adjusting rod (707) and the third outer cylinder (701) is opposite in direction to the thread of the threaded engagement between the second adjusting rod (707) and the second locking nut (708).

10. The adaptive floating device for docking a gas-liquid connector with an interface on an arrow, as described in claim 8, is characterized in that... The third piston rod (702) is equipped with a second fisheye connector at one end outside the third outer cylinder (701) and the second adjusting rod (707) is equipped with a second fisheye connector at one end outside the third outer cylinder (701). The third piston rod (702) is connected to the second fisheye connector and any of the first elastic rods (4) through a restricted ball joint. The second adjusting rod (707) is connected to the second fisheye connector and the drive mechanism mounting plate (5) through a restricted ball joint.

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