Multifunctional integrated interface for on-orbit assembly of modular space facility

Abstract

The invention discloses a multifunctional integrated interface for on-orbit assembly of modular space facilities, and belongs to the technical field of aerospace. The upper cover plate and the fixed base are connected through a supporting structure to form a circular cavity structure, the driving ring is in driving connection with the pin ring and can drive the pin ring to move up and down, the pin ring is used for achieving alignment positioning of a connector, and the driving ring and the fixed ring are matched through the coupling pin to drive the coupling ring to move up and down. The coupling ring is used for achieving the locking function of the interface, the lower end of the rotating base is in driving connection with the driving ring, the upper end of the rotating base penetrates through the fixing ring and is connected with the electric heating assemblies, the driving ring drives the electric heating assemblies to move up and down through the rotating base, and the electric heating assemblies are used for being matched with the interface on the opposite side to achieve data transmission and power transmission functions. The interface provided by the invention has the functions of mechanical locking, data transmission, power transmission and heat exchange at the same time, and can meet the on-orbit working requirement of a modular space structure.

Description

Technical Field

[0001] The present invention belongs to the technical field of aerospace, and particularly relates to a multi-functional integrated interface for on-orbit assembly of modular space facilities. Background Art

[0002] With the development of related technical fields such as aerospace, the depth of space exploration continues to increase, and the demand for the aperture of large space facilities such as space telescopes and space solar power stations also increases accordingly. However, limited by factors such as the fairing aperture, carrying capacity, and processing capacity of existing space vehicles, it is impossible to deploy the required large-aperture space facilities in the corresponding orbit by directly processing on the ground and then launching them into space in one go. Therefore, adopting a reasonable decomposition design method to design large-aperture space facilities into modular structures of the same size and assembling them in orbit through multiple launches of carrier rockets has become a development direction.

[0003] In order to connect each module and make it function as a whole, it is necessary to install locking interfaces on different modules. Considering the on-orbit working environment of large-aperture space facilities, the interfaces between modules (hereinafter referred to as interfaces) not only need to have a basic mechanical locking function to tightly connect each module into a whole, but also need to be able to realize functions such as data transmission, power transmission, and heat exchange between modules to facilitate the management and control of large-aperture space facilities. In addition, since large-aperture space facilities are usually assembled from multiple modules, in order to extend the on-orbit service life as much as possible and prevent the failure of the entire space facility due to the failure of a single module, the interface also needs to be easy to replace modules. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-functional integrated interface for on-orbit assembly of modular space facilities, which can realize functions such as data transmission, power transmission, and heat exchange.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A multi-functional integrated interface for on-orbit assembly of modular space facilities, comprising a drive ring, a coupling ring, a fixed ring, a support structure, an upper cover plate, a spring pin, a data-electric-heat component, a pin ring, a rotating base, and a fixed base;

[0007] The upper cover plate and the fixed base are connected by a support structure to form a circular cavity structure, and the fixed ring, the coupling ring, the drive ring, and the pin ring are sleeved and arranged in the circular cavity structure in sequence from inside to outside,

[0008] The driving ring is drivingly connected to the pin ring and can drive the pin ring to move up and down. The pin ring is used to achieve the alignment and positioning of the interface. The driving ring and the fixed ring can drive the coupling ring to move up and down through the cooperation of coupling pins. The coupling ring is used to achieve the locking function of the interface. The lower end of the rotating base is drivingly connected to the driving ring, and the upper end of the rotating base passes through the fixed ring and is connected with several electro-thermal components. The driving ring drives the electro-thermal components to move up and down through the rotating base. The electro-thermal components are used to cooperate with the opposite interface to achieve the functions of data transmission and power transfer.

[0009] The present invention has the following beneficial effects compared with the prior art:

[0010] 1. Complete functions: The interface of the present invention simultaneously has functions of mechanical locking, data transmission, power transmission, and heat exchange, and can meet the on-orbit working requirements of the modular space structure.

[0011] 2. Simple control: The interface of the present invention adopts the method of single-motor multi-step telescoping. Only by controlling the rotation of a single motor to drive the internal driving ring can the pin-hole insertion, hook locking, and docking of the electro-thermal components be completed, and all functions of the interface can be realized.

[0012] 3. Simplified structure: The interface of the present invention is designed as a hermaphrodite structure, which can be used as both the active end and the passive end at the same time, and all functions can also be realized only through the movement of the active end.

[0013] 4. Functional redundancy: The overall structure of the interface of the present invention is designed to be rotationally symmetric by 90°, which greatly increases the functional redundancy and ensures that the remaining parts of the interface can work normally and stably when a single part fails.

[0014] 5. Facilitate module replacement: The overall design of the interface of the present invention is a cylindrical structure. After unlocking, the extended parts retract into the cylinder. The interfaces are in plane contact with each other, without structural intersection or meshing, which is convenient for realizing module replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the exploded view of the present invention;

[0016] Figure 2 is the schematic structural view of the driving ring of the present invention;

[0017] Figure 3 is the schematic structural view of the fixed ring of the present invention;

[0018] Figure 4 is the schematic structural view of the electro-thermal component of the present invention;

[0019] Figure 5 is the schematic structural view of the rotating base of the present invention;

[0020] Figure 6It is a schematic diagram of the movement of the coupling pin of the present invention;

[0021] Figure 7 It is a schematic diagram of the self-locking of the coupling pin of the present invention;

[0022] Figure 8 It is a schematic diagram of the interface motion chain of the present invention;

[0023] Figure 9 It is a schematic diagram of the locking state when the interface of the present invention is the active end;

[0024] Figure 10 It is a schematic diagram of the replacement of the faulty module;

[0025] Wherein: 11. Driving ring; 111. Driving gear; 112. Outer groove line of the driving ring; 113. Inner groove line of the driving ring; 114. Top locking hook of the driving ring; 115. Outer gear; 12. Coupling ring; 121. Coupling hole; 122. Top locking hook; 13. Coupling pin; 14. Fixed ring; 141. Fixed hole; 142. Groove line; 143. First positioning hole; 15. Support structure; 151. Vertical groove line; 152. First bolt hole; 16. Upper cover plate; 161. Second bolt hole; 162. Second positioning hole; 163. Tapered hole; 17. Spring pin; 18. Digital electrothermal component; 181. Third positioning hole; 182. Rolling bearing; 183. Annular thin plate; 184. Heat exchange interface; 185. Bolt; 186. Circuit board; 187. Contact plug; 19. Pin ring; 191. Positioning pin; 192. Inner guiding pin; 193. Fourth positioning hole; 194. Outer guiding pin; 20. Rotating base; 201. Inner gear; 202. Annular groove; 203. Slope; 204. Step; 21. Fixed base; 211. Fifth positioning hole; 212. Third bolt hole; 213. Central hole; 22. Connecting bolt; 30. Space module structure; 31. Dotted line; 32. Locking interface. Detailed implementation mode

[0026] In order to better understand the purpose, structure and function of the present invention, the following further describes the present invention in detail with reference to the drawings.

[0027] The interface structure in the present invention is composed of Figure 1 as shown, mainly including a driving ring 11, a coupling ring 12, a coupling pin 13, a fixed ring 14, a support structure 15, an upper cover plate 16, a spring pin 17, a digital electrothermal component 18, a pin ring 19, a rotating base 20, a fixed base 21, and a connecting bolt 22.

[0028] The upper cover plate 16 and the fixed base 21 are connected by the support structure 15 to form a circular cavity structure, and the fixed ring 14, the coupling ring 12, the driving ring 11 and the pin ring 19 are sleeved in sequence from the inside to the outside and arranged in the circular cavity structure,

[0029] The driving ring 11 is drivingly connected to the pin ring 19 and can drive the pin ring 19 to move up and down. The pin ring 19 is used to achieve the alignment and positioning of the interface. The driving ring 11 and the fixed ring 14 can drive the coupling ring 12 to move up and down through the cooperation of the coupling pins 13. The coupling ring 12 is used to achieve the locking function of the interface. The lower end of the rotating base 20 is drivingly connected to the driving ring 11, and the upper end of the rotating base 20 passes through the fixed ring 14 and is connected with a plurality of electrothermal components 18. The driving ring 11 drives the plurality of electrothermal components 18 to move up and down through the rotating base 20. The plurality of electrothermal components 18 are used to cooperate with the opposite interface to achieve the functions of data transmission and power transfer.

[0030] The structure of the driving ring 11 is as Figure 2 shown. The overall structure of the driving ring 11 is cylindrical. Its outer wall is provided with a driving gear 111 and three outer groove lines 112 of the driving ring. Its inner wall is provided with three inner groove lines 113 of the driving ring. The bottom is provided with an external gear 115, and the top is provided with four top locking hooks 114 of the driving ring;

[0031] The structural dimensions of the outer groove line 112 of the driving ring and the inner groove line 113 of the driving ring are designed to meet the basic principle of the cylindrical cam. Among them, the driving gear 111 meshes with an external motor to realize the power input of the interface; the outer groove line 112 of the driving ring cooperates with the inner guide pin 192 of the pin ring 19 to drive the pin ring 19 to move; the inner groove line 113 of the driving ring cooperates with the coupling ring 12 through the coupling pin 13 to drive the coupling pin 13 and the coupling ring 12 to move; the external gear 115 meshes with the internal gear 201 of the rotating base 20 (as Figure 5 shown) to drive the rotating base 20 to realize the rotational motion;

[0032] In order to realize the hermaphrodite structure of the interface, the top locking hook 114 of the driving ring 11 and the top locking hook 122 of the coupling ring 12 are designed; when the interface is the active end, the top locking hook 122 is interlocked with the top locking hook 114 of the opposite interface; when the interface is the passive end, the top locking hook 114 is interlocked with the coupling ring locking hook of the opposite interface.

[0033] The overall structure of the coupling ring 12 is cylindrical, mainly including three coupling holes 121 at the bottom and four top locking hooks 122. Among them, the coupling holes 121 are used to fix the coupling pins 13, and the coupling ring 12 realizes the function of rotating and extending under the action of the coupling pins 13 and the inner groove line 113 of the driving ring; if the interface acts as the active end, the top locking hook 122 needs to cooperate with the top locking hook 114 of the passive end to realize the locking function of the interface.

[0034] The coupling pin 13 is of a cylindrical structure, and the two ends are respectively connected with the inner groove line 113 of the driving ring and the fixed ring 14 ( Figure 3It cooperates with the slot line 142 (as shown), and under the combined action of the inner slot line 113 of the drive ring and the slot line 142, rotational and translational movements can be achieved. Since the middle part is located in the coupling hole 121 of the coupling ring 12, the coupling ring 12 is driven to move simultaneously during the movement of the coupling pin 13.

[0035] The overall structure of the fixed ring 14 is cylindrical ( Figure 3 as shown), and mainly includes three fixing holes 141 at the bottom, three slot lines 142 at the middle position, and three positioning holes 143 at the top. Among them, the fixing holes 141 are connected to the bolt holes 212 of the fixing base 21 through the connecting bolts 22 to fix the fixed ring 14 itself; the slot lines 142 cooperate with the inner slot lines 113 of the drive ring to enable the coupling pin 13 to perform rotational and translational movements simultaneously; the positioning holes 143 are connected to the digital electro-thermal component 18 through the spring pins 17 to limit the movement displacement of the digital electro-thermal component 18.

[0036] The schematic diagram of the principle of the slot line 142 of the fixed ring 14 cooperating with the inner slot line 113 of the drive ring to make the coupling pin 13 perform rotational and translational movements is as Figure 6 、 Figure 7 shown. Since the structural dimensions of the slot line 142 and the inner slot line 113 of the drive ring are designed to meet the spatial cam principle, during the locking process of the interface, the slot line 142 remains stationary, and the inner slot line 113 of the drive ring rotates in a given direction (the rotation direction during the locking process is as shown by the black arrow in Figure 6 , and the rotation direction during the unlocking process is opposite to the direction shown by the black arrow), and the coupling pin 13 performs rotational and translational movements under the combined action of the coupling force, driving the coupling ring 12 to rotate and extend outwards to achieve the locking function of the top lock hook 122. After the inner slot line 113 of the drive ring moves a certain angle in the rotation direction, the coupling pin 13 moves to the end position ( Figure 7 shown), at this time, under the combined action of the slot line 142 and the inner slot line 113 of the drive ring, the coupling pin 13 meets the self-locking condition, and at the same time the interface remains in the locked state. The locked state of the interface as the active end in the present invention is as Figure 9 , and the pin ring 19 is attached to the upper cover plate 16. At this time, the positioning pin 191, the top lock hook 122, and the digital electro-thermal component 18 are all in the extended state, and respectively cooperate with the tapered hole, the drive ring lock hook, and the digital electro-thermal component of the opposite interface to achieve the functions of mechanical locking, data exchange, power transmission, and heat transfer between modules.

[0037] The support structure 15 consists of three independent arc-shaped plates, mainly including the vertical groove line 151 on the inner side and the first bolt holes 152 at the upper and lower ends. Among them, the vertical groove line 151 cooperates with the outer guiding pin 194 of the pin ring 19, enabling the pin ring 19 to only move up and down during the movement process; the first bolt holes 152 cooperate with the second bolt holes 161 of the upper cover plate 16 and the fifth positioning holes 211 of the fixed base 21 respectively, and are connected by connecting bolts 22 to achieve its own fixing and supporting functions. In order to reduce the overall mass of the interface, the support structure 15 is designed as three independent arc-shaped plates, which is also convenient for processing and manufacturing.

[0038] The overall structure of the upper cover plate 16 is a circular thin plate, mainly including the second bolt holes 161, two second positioning holes 162, and two tapered holes 163. Among them, the second bolt holes 161 cooperate with the first bolt holes 152 of the support structure 15 and are connected by connecting bolts 22 to achieve its own fixation; the second positioning holes 162 allow the positioning pins 191 to pass through to achieve the alignment function of the interface; in order to achieve the hermaphrodite structure design, when acting as the passive end interface, the tapered holes 163 allow the positioning pins of the opposite active end interface to enter to achieve the alignment function of the interface. The tapered structure design can also increase the tolerance of the interface.

[0039] The overall structure of the spring pin 17 is a cylinder, with a spring in the middle part, and the diameters of both ends are slightly larger than the middle part. The two ends of the spring pin 17 are respectively matched with the first positioning holes 143 at the top of the fixed ring 14 ( Figure 3 as shown) and the third positioning holes 181 of the several electrothermal components 18 ( Figure 4 as shown), allowing the several electrothermal components 18 to move up and down when being pushed by an external force. And, in order to keep the several electrothermal components 18 stable, the spring in the middle position of the spring pin 17 is always in a compressed state.

[0040] The overall structure of the several electrothermal components 18 ( Figure 4 as shown) is divided into three layers: upper, middle and lower, and is connected and fixed by bolts 185. It mainly includes a cylindrical support structure at the bottom layer, with three third positioning holes 181 and three rolling bearings 182 on the outside; the middle layer is a circular thin plate 183, which provides a fixing function for four heat exchange interfaces 184; the top layer is a circuit board 186 with four notches around, which provides a supporting function for the contact plug 187. Similarly, the circuit board 186 is divided into four areas, in pairs, to achieve the functions of data transmission and power transfer. The third positioning holes 181 cooperate with the first positioning holes 143 at the top of the fixed ring 14 ( Figure 3 as shown) through the spring pin 17 to achieve positioning and can also move up and down; the rolling bearings 182 cooperate with the rotating base 20 ( Figure 5The slope 203 and the step 204 at the top (as shown in the figure) cooperate. The slope 203 allows the rolling bearing 182 to move up and down, and the step 204 is used to maintain the moving height of the rolling bearing 182, realizing the connection function between the digital electrothermal component 18 and the interface on the opposite side; the heat exchange interface 184 is divided into two groups. The interfaces within one group are divided into male and female interfaces, which cooperate with the interfaces on the opposite side to achieve the heat exchange cycle and also have a redundancy function; the contact plug 187 is also divided into male and female interfaces, which cooperate with the interfaces on the opposite side to achieve the functions of data transmission and power transfer.

[0041] The overall structure of the pin ring 19 is a circular thin plate, mainly including two positioning pins 191, an inner guiding pin 192, a fourth positioning hole 193, and an outer guiding pin 194. Among them, the positioning pin 191 passes through the second positioning hole 162 of the upper cover plate 16 and docks with the tapered hole of the upper cover plate of the interface on the opposite side, realizing the alignment function of the interface; the inner guiding pin 192 cooperates with the outer groove line 112 of the driving ring to realize its own movement; the fourth positioning hole 193 is for meeting the hermaphrodite design of the interface. When acting as the passive end, it cooperates with the tapered hole 163 of the upper cover plate 16 to allow the positioning pin of the interface on the opposite side to be inserted, realizing the alignment function; the outer guiding pin 194 cooperates with the vertical groove line 151 of the support structure 15, enabling the pin ring 19 to only move up and down by itself.

[0042] The rotating base 20 ( Figure 5 as shown in the figure) has an overall structure of a hollow thin plate with a boss in the middle. The inner gear 201 is arranged on the upper surface of the hollow thin plate part, and three annular grooves 202 are opened around the boss on the hollow thin plate part. The top of the boss part is a step surface composed of a slope 203 and a step 204. Among them, the inner gear 201 meshes with the outer gear 115 at the bottom of the driving ring 11 ( Figure 2 as shown in the figure) to realize its own rotation; the annular groove 202 allows the fixed base 21 and the fixed ring 14 to be connected through the connecting bolt 22; the slope 203 cooperates with the rolling bearing 182 of the digital electrothermal component 18 ( Figure 4 as shown in the figure), allowing the rolling bearing 182 to slide along the slope 203 and simultaneously driving the digital electrothermal component 18 to move up and down; the step 204 cooperates with the rolling bearing 182 of the digital electrothermal component 18 to maintain the rising height of the rolling bearing 182.

[0043] The overall structure of the fixed base 21 is a circular thin plate, mainly including a fifth positioning hole 211, a third bolt hole 212, and a central hole 213. Among them, the fifth positioning hole 211 cooperates with the first bolt hole 152 of the support structure 15 and is connected through the connecting bolt 22, which is used to realize the fixing function of the support structure 15; the third bolt hole 212 cooperates with the connecting bolt 22, which is used to realize the fixing function of the fixed ring 14; the central hole 213 allows the internal circuit of the space module structure to cooperate with the digital electrothermal component 18 and realizes the functions of data transmission, power transmission, and heat exchange between different space module structures through the interface.

[0044] The connecting bolt 22 realizes the fixing function of the fixing ring 14 by cooperating with the bolt hole three 212 of the fixed base 21 and the fixing hole 141 of the fixing ring 14. At the same time, the connecting bolt 22 is also used for the connection and fixation of the bolt hole one 152 of the support structure 15 with the bolt hole two 161 of the upper cover plate 16 and the positioning hole five 211 of the fixed base 21 respectively.

[0045] Through the above analysis, when the interface in the present invention is used as the active end, the motion chain transmission process of realizing multiple expansions and contractions by driving the driving ring 11 to rotate through a single motor is as follows Figure 8 shown in the figure, and the arrow direction in the figure represents the motion transmission direction during the locking process.

[0046] The first motion chain: The extended positioning function of the positioning pin 191 is realized (pin-hole insertion). After the driving ring 11 rotates, the inner guiding pin 192 and the outer guiding pin 194 respectively cooperate with the outer groove line 112 of the driving ring and the vertical groove line 151 of the support structure 15 to move, and drive the pin ring 19 to move up and down. The positioning pin 191 fixed on the pin ring 19 gradually extends out of the positioning hole two 162 of the upper cover plate 16 and is inserted into the tapered hole of the opposite interface, completing the positioning function of the interface.

[0047] The second motion chain: The mechanical locking function of the top locking hook 122 is realized (the locking hook rotates and extends). After the driving ring 11 rotates, under the combined action of the inner groove line 113 of the driving ring and the fixed ring groove line 142 ( Figure 3 shown in the figure), it drives the coupling pin 13 to perform a composite motion of rotating and extending, and then drives the top locking hook 122 of the coupling ring 12 to rotate and extend, and cooperate with the driving ring locking hook of the opposite interface to realize the locking function of the interface.

[0048] The third motion chain: The data transfer, power transmission, and heat exchange functions of the digital electro-thermal component 18 are realized (the extension and docking of the digital electro-thermal component 18). After the driving ring 11 rotates, through the meshing of the bottom external gear 115 with the internal gear 201 of the rotating base 20, it drives the rotating base 20 to rotate, and then through the ramp 203 at the top of the rotating base 20 ( Figure 5 shown in the figure), it pushes the rolling bearing 182 at the bottom of the digital electro-thermal component 18 to extend. After turning a certain angle, the step 204 cooperates with the rolling bearing 182 to maintain the extended height of the digital electro-thermal component 18, realize the docking with the digital electro-thermal component of the opposite interface, and then realize the data transfer, power transmission, and heat exchange functions of the interface.

[0049] The schematic diagram of the fault module replacement is as Figure 10As shown, it mainly includes a space module structure 30 (the thick solid line represents the maximum size envelope range of the space module structure), and a locking interface 32 installed on the outer side of the space module (the dotted line 31 represents the maximum size envelope range of the locking interface, and the size of the dotted line 31 is larger than the size envelope range of the space module structure 30). Figure 10 Among them, the space module with a shaded part in the center position is a faulty module. Since the faulty module is connected to other surrounding module structures through the locking interface in the present invention (the faulty module cannot move in the XY plane), the locking interface as a whole is a cylindrical structure. After unlocking, it is in planar contact with other module interfaces through the upper cover plate 16. There is no structural intersection or meshing between adjacent interfaces, and the faulty module can be moved along the Z-axis direction to complete the replacement work.

[0050] In order to achieve the mechanical connection function between modules, the interface in the present invention first realizes the preliminary positioning between modules through the pin-hole insertion method. After positioning, the locking hooks used to complete the mechanical connection function rotate and extend, and cooperate with the relevant structures of the opposite interface to achieve the mechanical locking between modules. After locking, the several electro-thermal components 18 located at the center of the interface extend and cooperate with the corresponding components of the opposite interface to achieve functions of data transmission, power transmission, and heat exchange.

[0051] In addition, for the convenience of replacing the faulty module, the interface is designed as a cylindrical structure as a whole. After the docking interfaces of the faulty module and the docking interfaces of adjacent modules are unlocked, the parts for positioning, locking, and electro-thermal docking retract into the cylinder interior, and the interfaces are in planar contact with no intersecting or meshing structures.

[0052] It can be understood that the present invention is described through some embodiments. As is known to those skilled in the art, without departing from the spirit and scope of the present invention, various changes or equivalent replacements can be made to these features and embodiments. Additionally, under the teaching of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A multifunctional integrated interface for on-orbit assembly of modular space facilities, characterized by: It comprises a driving ring (11), a coupling ring (12), a fixing ring (14), a supporting structure (15), an upper cover plate (16), a spring pin (17), a plurality of electric heating components (18), a pin ring (19), a rotating base (20) and a fixing base (21); The upper cover plate (16) and the fixed base (21) are connected by a support structure (15) to form a circular cavity structure, and the fixed ring (14), the coupling ring (12), the driving ring (11) and the pin ring (19) are sequentially mounted from the inside to the outside and arranged in the circular cavity structure. The driving ring (11) is drivingly connected to the pin ring (19) and can drive the pin ring (19) to move up and down. The pin ring (19) is used to realize the alignment and positioning of the interface. The driving ring (11) and the fixed ring (14) can drive the coupling ring (12) to move up and down through the coupling pin (13). The coupling ring (12) is used to realize the locking function of the interface. The lower end of the rotating base (20) is drivingly connected to the driving ring (11). The upper end of the rotating base (20) passes through the fixed ring (14) and is connected to a plurality of electric heating components (18). The driving ring (11) drives the plurality of electric heating components (18) to move up and down through the rotating base (20). The plurality of electric heating components (18) are used to cooperate with the opposite side interface to realize data transmission and power transmission functions.

2. A multifunctional integrated interface for on-orbit assembly of modular space facilities according to claim 1, characterized in that: The driving ring (11) is a cylindrical structure, with a driving gear (111) and a driving ring outer groove (112) on its outer wall, a driving ring inner groove (113) on its inner wall, an outer gear (115) on its bottom, and a driving ring top locking hook (114) on its top; The drive ring (11) meshes with an external motor through a drive gear (111); the outer groove line (112) of the drive ring cooperates with an inner guide pin (192) of a pin ring (19); the inner groove line (113) of the drive ring cooperates with a coupling ring (12) through a coupling pin (13); the drive ring (11) meshes with an inner gear (201) of a rotating base (20) through an outer gear (115) at the bottom; a top locking hook (122) is provided at the top of the coupling ring (12); when the interface is used as an active end, the top locking hook (122) interlocks with a top locking hook (114) of the drive ring of the opposite interface; when the interface is used as a passive end, the top locking hook (114) of the drive ring interlocks with a coupling ring locking hook of the opposite interface.

3. A multifunctional integrated interface for on-orbit assembly of modular space facilities according to claim 2, characterized in that: The coupling ring (12) and the fixing ring (14) are both cylindrical structures, and the outer wall of the fixing ring (14) is provided with a groove line (142). The bottom of the coupling ring (12) is provided with a coupling hole (121). The coupling pin (13) passes through the coupling hole (121), and the two ends thereof are respectively matched with the inner groove line (113) of the driving ring (11) and the groove line (142) of the fixing ring (14).

4. A multifunctional integrated interface for on-orbit assembly of modular space facilities according to claim 3, characterized in that: The matching design of the groove line (142) of the fixing ring (14) and the groove line (113) in the driving ring satisfies the spatial cam principle, so that the coupling pin (13) can achieve a self-locking condition during the movement process, and the coupling pin (13) can achieve a rotational and translational composite movement.

5. A multifunctional integrated interface for on-orbit assembly of modular space facilities according to claim 4, characterized in that: The fixing ring (14) is provided with a fixing hole (141) at the bottom and a positioning hole (143) at the top; the fixing hole (141) is connected to a bolt hole (212) of a fixing base (21) via a connecting bolt (22), and the positioning hole (143) is connected to a positioning hole (181) of a plurality of electric heating components (18) via a spring pin (17).

6. A multifunctional integrated interface for on-orbit assembly of modular space facilities according to claim 2, characterized in that: The pin ring (19) is an annular thin plate structure, an outer guide pin (194) is arranged on its outer circumferential surface, an inner guide pin (192) is arranged on its inner circumferential surface, and a positioning pin (191) is arranged at the outer edge of the upper surface; the pin ring (19) cooperates with a vertical groove line (151) arranged on the support structure (15) through the outer guide pin (194), and the trajectory design of the outer groove line (112) of the driving ring conforms to the principle of a cylindrical cam. The inner guide pin (192) cooperates with the outer groove line (112) of the driving ring to realize the pin ring (19) to move linearly up and down, so that the positioning pin (191) can dock with the tapered hole of the opposite side interface.

7. A multifunctional integrated interface for on-orbit assembly of modular space facilities according to claim 6, characterized in that: The support structure (15) is composed of three independent arc-shaped plates. A vertical groove line (151) is provided on the inner side of each independent arc-shaped plate to cooperate with the outer guide pin (194) of the pin ring (19), so that the pin ring (19) can only move up and down during the movement. The upper and lower ends of each independent arc-shaped plate are connected to the upper cover plate (16) and the fixed base (21) through a bolt hole (152) and a connecting bolt (22).

8. A multifunctional integrated interface for on-orbit assembly of modular space facilities according to claim 7, characterized in that: The upper cover plate (16) is an annular thin plate, on which a second bolt hole (161), a second positioning hole (162) and a tapered hole (163) are arranged; the second bolt hole (161) of the upper cover plate (16) cooperates with the first bolt hole (152) of the support structure (15) and is connected by a connecting bolt (22); the second positioning hole (162) allows the positioning pin (191) of the pin ring (19) to pass through, and the tapered hole (163) allows the positioning pin of the active end interface on the opposite side to enter.

9. The multifunctional integrated interface for on-orbit assembly of modular space facilities according to claim 2, characterized in that: The rotating base (20) is a hollow thin plate with a boss in the middle, an internal gear (201) is arranged on the upper surface of the hollow thin plate part, three annular grooves (202) are arranged around the boss in the hollow thin plate part, the top of the boss part is a slope (203) and a step (204) together form a step surface, the internal gear (201) is meshed with the bottom external gear (115) of the driving ring (11), the annular groove (202) allows the fixed base (21) and the fixed ring (14) to be connected by connecting bolts (22), the slope (203) cooperates with the rolling bearing (182) of the electric heating component (18), allowing the rolling bearing (182) to slide along the slope (203) and drive the electric heating component (18) to move up and down; the step (204) cooperates with the rolling bearing (182) of the electric heating component (18) to maintain the rising height of the rolling bearing (182).

10. The multifunctional integrated interface for on-orbit assembly of modular space facilities according to claim 2, characterized in that: The electric heating assembly (18) comprises a bottom cylindrical support structure, a middle annular thin plate (183) and an upper circuit board (186), and the three are connected and fixed by bolts (185). A heat exchange interface (184) is provided on the annular thin plate (183), and the circuit board (186) provides support for the contact plug (187). The rolling bearing (182) and the positioning hole (181) are both provided on the outer circumferential surface of the support structure.

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