A continuous riveting device for in-orbit manufacturing

Abstract

The application relates to the technical field of spacecraft manufacturing, and discloses a continuous riveting device for on-orbit manufacturing, which comprises a wedge mechanism and a ratchet feeding mechanism and a riveting head module connected therewith respectively, the wedge mechanism is driven to have a driving ratchet feeding mechanism to move rivets to a pre-riveting position one by one and a driving ratchet feeding mechanism to move the rivets at the pre-riveting position to a riveting position and a driving riveting head module to rivet the rivets at the riveting position. The continuous riveting device drives the ratchet feeding mechanism and the riveting head module simultaneously through the wedge mechanism, and the feeding and riveting processes can be completed through one reciprocating action, the overall device can realize continuous feeding and automatic riveting of the rivet strip in the space on-orbit environment, the problems of the traditional connection mode affected by the extreme environment such as the space vacuum, high and low temperature and the like are overcome, the device has the advantages of low environmental sensitivity and high connection efficiency, and is suitable for rapid and efficient connection of space structures and composite material components.

Description

Technical Field

[0001] This application relates to the field of spacecraft manufacturing technology, and in particular to a continuous riveting device for on-orbit manufacturing. Background Technology

[0002] As aerospace technology advances towards deep space exploration and the construction of large-scale space infrastructure, the on-orbit assembly of giant space structures such as megawatt-class space solar power stations, very large aperture radio telescopes, and very long baseline interferometry systems places extremely high demands on the reliability, timeliness, and system integration of connection processes.

[0003] However, on-orbit connection technology has significant limitations when dealing with extreme space environments: the welding process is affected by the high vacuum and extreme temperatures in space, which requires the configuration of redundant preheating, insulation and isolation systems, resulting in complex structures and a large amount of space resources, making it difficult to achieve lightweight and highly integrated designs; although the adhesive bonding process has some environmental adaptability, the curing process is slow in space, making it difficult to meet the needs of on-orbit connections and large-scale structural deployment.

[0004] Therefore, developing a new type of on-orbit connection device that can overcome environmental constraints and achieve high connection efficiency has become a key issue that urgently needs to be addressed in the current aerospace manufacturing field. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention sets up a wedge mechanism to simultaneously drive the ratchet feeding mechanism and the riveting head module. The feeding and riveting processes can be completed in a single reciprocating motion. Furthermore, the entire device can achieve continuous feeding and automatic riveting of rivet strips in a space-based on-orbit environment. This overcomes the problem of traditional connection methods being affected by extreme environments such as space vacuum and high and low temperatures. It has the advantages of low environmental sensitivity and high connection efficiency, and is suitable for rapid and efficient connection of space structures and composite material components.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a continuous riveting device for on-orbit manufacturing, comprising: a ratchet feeding mechanism, wherein the ratchet feeding mechanism has a pre-riveting position and a riveting position; A press-fit head module, the press-fit head module being used to move toward the riveting position and press-fit the rivet located at the riveting position; The wedge mechanism is connected to the riveting head module and the ratchet feeding mechanism respectively. The wedge mechanism is driven to have a feeding state and a riveting state respectively. In the rivet feeding state, the ratchet feeding mechanism is driven by the wedge mechanism to move the rivets one by one to the pre-rivet position, and the pressing head module is driven by the wedge mechanism to move away from the riveting position. In the riveting state, the ratchet feeding mechanism is driven by the wedge mechanism to move the rivet at the pre-riveting position to the riveting position, and the pressing head module is driven by the wedge mechanism to move toward the riveting position and press the rivet located at the riveting position.

[0007] Furthermore, the ratchet feeding mechanism includes a feeding pin, which is connected to the wedge mechanism, and the feeding pin is used to move the rivet located at the pre-riveting position to the riveting position. A ratchet, the ratchet being used to engage with the push tooth when rotating in the engagement direction and to disengage from the push tooth when rotating in the non-engaging direction; A reset elastic element is connected to the ratchet and is used to drive the ratchet to rotate in the meshing direction and move the nail band in the nail feeding state. A drive block is disposed on the feeding pin and is used to push the ratchet to rotate in the non-engaging direction in the riveting state to store energy in the reset elastic element.

[0008] Furthermore, the wedge mechanism includes: a downward wedge block, and the riveting head module is connected to the downward wedge block; A transverse wedge block, which abuts against the downward wedge block and is driven to move by the downward wedge block; An upward-moving wedge abuts against the transverse wedge and is driven by the transverse wedge to move relative to the upward-moving wedge; the feeding pin is connected to the upward-moving wedge. The riveting head module, the riveting position, the pre-riveting position, and the feeding pin are located sequentially on the same straight line. In the riveting state, the feeding ejector pin is driven by the upward wedge to move the rivet at the pre-riveting position to the riveting position, and the pressing head module is driven by the downward wedge to move toward the riveting position and press the rivet located at the riveting position.

[0009] Furthermore, the wedge mechanism also includes: a plurality of reset mechanisms, which are respectively connected to the transverse wedge and the upward wedge, and are used to store energy in the riveting state and drive the transverse wedge and the upward wedge to reset in the nail feeding state.

[0010] Furthermore, the ratchet feeding mechanism also includes a push rod, which is connected to the drive block; A rotating wheel is rotatably disposed at one end of the push rod away from the drive block, and the rotation axis of the rotating wheel is parallel to the rotation axis of the ratchet. A drive wheel, the drive wheel comprising: a wheel body, the wheel body being connected to the ratchet; A drive unit is disposed on the wheel body, wherein: the drive unit abuts against the rotating wheel and is driven by the push rod to rotate the ratchet in the non-engaging direction; The driving unit is connected to the reset elastic element and is driven by the reset elastic element to drive the ratchet to rotate in the meshing direction.

[0011] Furthermore, the push rod includes: a sleeve; A buffer rod, one end of which is slidably disposed inside the sleeve, and the other end protruding outside the sleeve to form a buffer end, and the rotating wheel is disposed opposite to the buffer end at both ends of the sleeve, and the buffer rod is provided with a sliding hole arranged along its length. A limiting pin is slidably disposed in the sliding hole and connected to the sleeve to limit the movement distance of the buffer rod; A buffer elastic element is connected to the buffer rod and is used to drive the buffer rod to move away from the sleeve.

[0012] Furthermore, the riveting head module includes: a riveting head, one end of which is connected to the lowering wedge block, and the other end forming a riveting end, which is used to rivet the rivet located at the riveting position; A plurality of secondary positioning pins are connected to the riveting head and are parallel to the riveting head. The plurality of secondary positioning pins are used to position the workpiece to be riveted.

[0013] Furthermore, the continuous riveting device also includes a servo electric cylinder for driving the downward wedge block to move; The servo electric cylinder includes: a servo motor; A lead screw drive mechanism is connected to the lowering wedge block, and the lowering wedge block moves under the drive of the lead screw drive mechanism; A reduction gearbox is disposed between the servo motor and the lead screw transmission mechanism.

[0014] Furthermore, the continuous riveting device also includes a mounting frame, which includes a base plate, and the transverse wedge is slidably disposed on the base plate; The main support frame, wherein the downward wedge block is slidably mounted on the main support frame; Side uprights, which are opposite to the main support frame and are parallel to each other at both ends of the base plate; the upward wedge block is slidably mounted on the side uprights. The upper cover plate is disposed at one end of the main support frame away from the bottom plate, and the servo motor is disposed on the upper cover plate; An auxiliary support frame is disposed between the upper cover plate and the bottom plate; A connecting angle bracket is disposed between the upper cover plate and the auxiliary support frame.

[0015] Furthermore, the rivet includes: a rivet head; A nail rod, one end of which is disposed on the nail head, and the other end of which forms a frustum structure; A shaped blind hole is provided on the nail head and the nail shank, and the opening is located on the surface of the nail head away from the nail shank; A plurality of forming grooves are provided through the nail rod and are spaced apart along the circumference of the nail rod.

[0016] Beneficial effects: This invention sets up a wedge mechanism to simultaneously drive the ratchet feeding mechanism and the riveting head module, so that the feeding and riveting processes can be completed in one reciprocating motion. Moreover, the whole device can realize continuous feeding and automatic riveting of rivet strips in a space on-orbit environment, overcoming the problem of traditional connection methods being affected by extreme environments such as space vacuum and high and low temperatures. It has the advantages of low environmental sensitivity and high connection efficiency, and is suitable for rapid and efficient connection of space structures and composite material components. Attached Figure Description

[0017] Figure 1 A schematic diagram of the continuous riveting device provided by the present invention; Figure 2 A cross-sectional view of the continuous riveting device provided by the present invention; Figure 3 A partial view of the continuous riveting device provided by the present invention; Figure 4 Another partial view of the continuous riveting device provided by the present invention; Figure 5 for Figure 4 A magnified view of a portion at point A; Figure 6 This is an exploded view of the ratchet feeding mechanism provided by the present invention; Figure 7 for Figure 6 A schematic diagram of the middle section structure; Figure 8 An exploded view of the push rod structure provided by the present invention; Figure 9 Exploded view of the mounting bracket provided by the present invention; Figure 10 This is a schematic diagram of the structure of the rivet strip provided by the present invention; Figure 11 This is a schematic diagram of the rivet structure provided by the present invention; Figure 12 A cross-sectional view of the rivet provided by the present invention.

[0018] The labels in the attached diagram are as follows: 100, rivet strip; 110, rivet strip; 111, pusher tooth; 120, rivet; 121, rivet head; 122, rivet shank; 1221, forming blind hole; 1222, forming groove; 200, ratchet feeding mechanism; 210, feeding pin; 211, drive block; 220, ratchet; 230, reset elastic element; 240, push rod; 241, sleeve; 242, buffer rod; 2421, buffer end; 2422, sliding hole; 243, limit pin; 244, buffer elastic element; 250, rotating wheel; 260, drive wheel; 261, wheel body; 262, drive unit; 300. Riveting head module; 310, riveting head; 311, riveting end; 320, secondary positioning pin; 331, riveting position; 332, pre-riveting position; 333, meshing direction; 400, wedge mechanism; 410, downward wedge block; 420, transverse wedge block; 430, upward wedge block; 440, reset mechanism; 500, servo electric cylinder; 510, servo motor; 520, gearbox; 530, lead screw transmission mechanism; 600, mounting bracket; 610, base plate; 620, main support frame; 630, side upright plate; 640, top cover plate; 650, auxiliary support frame; 660, connecting angle bracket; 670, skin. Detailed Implementation

[0019] This invention provides a continuous riveting device for on-orbit manufacturing. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0021] It should also be noted that the same or similar reference numerals in the accompanying drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] The invention will be further explained below with reference to the accompanying drawings and the description of the embodiments.

[0024] This embodiment provides an on-orbit manufacturing continuous riveting device, such as... Figures 1 to 12 As shown, in order to solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: The continuous riveting device for on-orbit manufacturing includes: a wedge mechanism 400, a ratchet feeding mechanism 200, a riveting head module 300, and a rivet strip 100. The wedge mechanism 400 is connected to the riveting head module 300 and the ratchet feeding mechanism 200 respectively. The wedge mechanism 400 is mainly used to synchronously drive the ratchet feeding mechanism 200 and the riveting head module 300 to operate simultaneously, so as to remove the rivets 120 on the rivet strip 100 one by one and rivet them onto the workpiece to be riveted.

[0025] Specifically, such as Figure 10 As shown, the rivet strip 100 includes a rivet strip 110 and a plurality of rivets 120 spaced apart along the length of the rivet strip 110. The rivet strip 100 is a strip structure used to support and position the plurality of rivets 120, and to ensure that the rivets 120 are arranged in an orderly manner and with precise position during feeding and riveting. Furthermore, its surface is provided with a plurality of push teeth 111 and mounting holes (not shown in the figure) spaced at equal intervals along its length. The rivets 120 are fixed in the mounting holes. As the core connecting element of the riveting operation, the rivets 120 achieve efficient fixing and reinforcement to the workpiece by continuously feeding and pressing the rivets 120.

[0026] In practical use, when the wedge mechanism 400 is in the feeding state, the ratchet feeding mechanism 200 is driven to move the rivets 120 one by one to the pre-riveting position 332. The pressing head module 300 is driven by the wedge mechanism 400 to move upward away from the riveting position 331, thus completing the preparation for riveting the rivets 120. Figure 2As shown, the ratchet feeding mechanism 200 has a pre-riveting position 332 and a riveting position 331. The riveting head module 300, the riveting position 331, the pre-riveting position 332, and the ratchet feeding mechanism 200 are arranged sequentially from top to bottom, with the workpiece to be riveted located between the riveting head module 300 and the riveting position 331. Therefore, when the wedge mechanism 400 is in the riveting state, the ratchet feeding mechanism 200 is driven to move the rivet 120 on the pre-riveting position 332 upward to the riveting position 331. During this process, the rivet 120 can penetrate or pass through the workpiece to be riveted. Meanwhile, the riveting head module 300 is driven by the wedge mechanism 400 to move downward to rivet the rivet 120 located at the riveting position 331, thereby riveting the rivet 120 onto the workpiece to be riveted. By repeating this action, the rivets 120 on the rivet strip 100 can be riveted one by one onto the workpiece to be riveted.

[0027] In one embodiment, such as Figure 2 , Figure 6 , Figure 7 As shown, the ratchet feeding mechanism 200 includes: a feeding pin 210, a ratchet 220, a reset elastic element 230, and a drive block 211.

[0028] Specifically, such as Figure 2 As shown, the press-fit head module 300, riveting position 331, pre-riveting position 332, and feeding ejector pin 210 are arranged sequentially from top to bottom. The workpiece to be riveted is located between the press-fit head module 300 and the riveting position 331. Therefore, when the wedge mechanism 400 is in the riveting state, the feeding ejector pin 210 is driven to move upward to move the rivet 120 located at the pre-riveting position 332 to the riveting position 331. During this process, the rivet 120 can penetrate or pass through the workpiece to be riveted. Meanwhile, the press-fit head module 300 is driven downward by the wedge mechanism 400 to rivet the rivet 120 located at the riveting position 331, thereby riveting the rivet 120 onto the workpiece to be riveted. By repeating this action, the rivets 120 on the rivet strip 100 can be riveted one by one onto the workpiece to be riveted.

[0029] Specifically, such as Figure 7 As shown, the ends of the ratchet teeth of the ratchet 220 are inclined in a clockwise direction. When the ratchet 220 rotates in the meshing direction 333 (clockwise), the ratchet teeth of the ratchet 220 will mesh with the push teeth 111 on the rivet strip 100. When the ratchet 220 continues to rotate in the meshing direction 333 (clockwise), the ratchet 220 can drive the rivet strip 100 to move to the right, thereby conveying the rivet 120 on the rivet strip 100 to the pre-riveting position 332. When it rotates in the non-meshing direction 333 (counterclockwise), the ratchet teeth of the ratchet 220 will push the rivet strip 100 upward, causing it to separate from the push teeth 111.

[0030] Specifically, the reset elastic element 230 is connected to the ratchet 220 and is used to drive the ratchet 220 to rotate in the meshing direction 333 (clockwise) when the pin is being fed; the drive block 211 is set on the feeding pin 210 and is used to drive the ratchet 220 to rotate in the non-meshing direction 333 (counterclockwise) while storing energy in the reset elastic element 230.

[0031] It should be noted that when the drive block 211 drives the ratchet 220 to rotate in the non-engaging direction 333 (counterclockwise), if the rivet strip 100 is not restrained by external force, and there is a large frictional force between the ratchet teeth of the ratchet 220 and the rivet strip 100, it may cause the rivet strip 100 to move to the left, causing the rivet 120 to shift position and affecting the next riveting operation. Therefore, in this device, when the wedge mechanism 400 is in the riveting state, the feed pin 210 is driven to move upward to move the rivet 120 located at the pre-riveting position 332 to the riveting position 331. At this time, the feed pin 210 will also pass through the mounting hole for fixing the rivet 120 on the rivet strip 100, thus fixing the rivet strip 100 and preventing the rivet strip 100 from moving to the left due to the influence of the ratchet 220, causing the rivet 120 to shift position. In addition, if Figure 7 As shown, in order to ensure that the action of the fixed rivet strip 100 precedes the action of the drive block 211 driving the ratchet 220 to rotate, the position of the drive block 211 on the feed pin 210 can be adjusted so that after the feed pin 210 passes through the mounting hole on the rivet strip 100, the drive block 211 drives the ratchet 220 to rotate.

[0032] In one embodiment, such as Figure 6 , Figure 7 As shown, the ratchet feeding mechanism 200 also includes a push rod 240, a rotary wheel 250, and a drive wheel 260. Specifically, when the wedge mechanism 400 is in the riveting state, the feeding pin 210 is driven to move upward to drive the driving block 211 to move upward. The driving block 211 drives the rotating wheel 250 to rotate through the push rod 240, while the driving wheel 260 rotates synchronously with the ratchet 220, thereby driving the ratchet 220 to rotate in the non-meshing direction 333 (counterclockwise) to store energy in the reset elastic member 230. When the wedge mechanism 400 is in the nail feeding state, the feeding pin 210 is driven to move downward to drive the driving block 211 to move downward. The driving block 211 no longer drives the rotating wheel 250 and the ratchet 220 through the push rod 240. Therefore, the reset elastic member 230 drives the ratchet 220 to rotate in the meshing direction 333 (clockwise) to drive the rivet strip 100 to move to the right, thereby conveying the rivet 120 on the rivet strip 100 to the pre-riveting position 332.

[0033] Additionally, the rotating wheel 250 is rotatably mounted at the end of the push rod 240 away from the drive block 211, and the rotation axis of the rotating wheel 250 is parallel to the rotation axis of the ratchet 220. The drive wheel 260 includes a wheel body 261 and a drive part 262. The wheel body 261 is connected to the ratchet 220, and the drive part 262 is mounted on the wheel body 261 and abuts against the rotating wheel 250. Therefore, when the push rod 240 moves upward, the drive part 262 can drive the rotating wheel 250 to rotate counterclockwise, thereby driving the ratchet 220 to rotate in the non-meshing direction 333 (counterclockwise) to store energy in the reset elastic member 230. When the push rod 240 is not subjected to an upward force, the reset elastic member 230 can drive the ratchet 220 to rotate in the meshing direction 333 (clockwise) to reset the push rod 240. The ratchet 220 is the main drive unit 262 of the ratchet feeding mechanism 200. It is used to cooperate with the rivet strip 100 to feed the rivets 120 on the rivet strip 100 one by one into the pre-riveting position 332, so as to realize fixed-distance and fixed-quantity feeding.

[0034] In one embodiment, such as Figure 8 As shown, the push rod 240 includes a sleeve 241, a buffer rod 242, a limiting pin 243, and a buffer elastic element 244. One end of the buffer rod 242 is slidably disposed inside the sleeve 241, and the other end protrudes outside the sleeve 241 to form a buffer end 2421. The rotating wheel 250 is disposed opposite to the buffer end 2421 at both ends of the sleeve 241. The buffer elastic element 244 is used to drive the buffer rod 242 to move away from the sleeve 241. Therefore, when the driving block 211 moves upward and hits the buffer end 2421, the buffer elastic element 244 can absorb part of the impact force, thereby preventing the ratchet 220 from applying excessive impact force to the rivet strip 100. In addition, the buffer rod 242 is provided with a sliding hole 2422 arranged along its length direction. The limiting pin 243 is slidably disposed in the sliding hole 2422 and connected to the sleeve 241 to limit the movement distance of the buffer rod 242 and prevent the buffer rod 242 from disengaging from the sleeve 241.

[0035] In one embodiment, such as Figures 2 to 4 As shown, the wedge mechanism 400 includes: a downward-moving wedge 410, a horizontal-moving wedge 420, and an upward-moving wedge 430. Figure 2 As shown, the downward movement of the lower wedge 410 drives the horizontal movement wedge 420 to move to the left, and the horizontal movement of the horizontal movement wedge 420 drives the upward movement wedge 430 to move upward. The lower wedge 410 is connected to the riveting head module 300, and the upward movement wedge 430 is connected to the feeding ejector pin 210, so that the riveting head module 300 and the feeding ejector pin 210 move synchronously and relative to each other.

[0036] Specifically, the riveting head module 300, riveting position 331, pre-riveting position 332, and feeding ejector pin 210 are arranged sequentially from top to bottom. In the riveting state, the downward moving wedge block 410 moves downward, causing the riveting head module 300 to move downward. Meanwhile, the upward moving wedge block 430 is driven to move upward, causing the feeding ejector pin 210 to move upward, thereby moving the rivet 120 on the pre-riveting position 332 to the riveting position 331 and passing through the workpiece to be riveted. At this time, the downward moving wedge block 410 contacts the rivet 120, and the rivet 120 is riveted to complete the connection.

[0037] In one embodiment, such as Figure 4 As shown, the wedge mechanism 400 further includes a plurality of reset mechanisms 440, which are respectively connected to the transverse wedge block 420 and the upward wedge block 430, and are used to store energy in the riveting state and drive the transverse wedge block 420 and the upward wedge block 430 to reset in the rivet feeding state.

[0038] In one embodiment, such as Figure 4 , Figure 5 As shown, the press-fit head module 300 includes a press-fit head 310 and several secondary positioning pins 320. The secondary positioning pins 320 are connected to the press-fit head 310 and are parallel to it. One end of the press-fit head 310 is connected to the lowering wedge block 410, and the other end forms a press-fit end 311. The press-fit end 311 is used to press-fit the rivet 120 located at the riveting position 331. It can be understood that the press-fit head 310 is the direct working component in the riveting process, used to apply pressure to the rivet 120 to achieve the riveting operation. The secondary positioning pins 320 are used to position the riveted workpiece, improving the alignment accuracy and repeatability of the riveting operation and preventing misalignment during the riveting process.

[0039] In one embodiment, such as Figure 2 As shown, the continuous riveting device further includes a servo electric cylinder 500 for driving the downward wedge block 410 to move. The servo electric cylinder 500 includes a servo motor 510, a lead screw transmission mechanism 530, and a reduction gearbox 520. The servo motor 510, reduction gearbox 520, lead screw transmission mechanism 530, and downward wedge block 410 are connected in sequence, and the downward wedge block 410 is driven by the servo motor 510 to move. The servo motor 510 provides a power source for the servo electric cylinder 500, enabling precise control of the downward wedge block 410. The reduction gearbox 520 is located between the servo motor 510 and the lead screw transmission mechanism 530, used to reduce the output speed of the servo motor 510, increase the output torque, and improve the overall driving capability and motion smoothness. The lead screw transmission mechanism 530 is connected to the reduction gearbox 520, used to convert the rotational motion of the servo motor 510 into linear motion, achieving precise linear transmission.

[0040] In one embodiment, such as Figure 1, Figure 9 As shown, the continuous riveting device further includes a mounting frame 600, which comprises a base plate 610, a main support frame 620, side uprights 630, an upper cover plate 640, an auxiliary support frame 650, a skin 670, and connecting brackets 660. The side uprights 630 and the main support frame 620 are oppositely disposed at both ends of the base plate 610 and are parallel to the main support frame 620, forming a U-shaped structure. The base plate 610 provides a basic support platform for the device and serves as the mounting base for the wedge mechanism 400 (the transverse wedge 420 is slidably disposed on the base plate 610, the downward wedge 410 is slidably disposed on the main support frame 620, and the upward wedge 430 is slidably disposed on the side uprights 630). The main support frame 620 provides longitudinal stiffness and support force to the mounting frame 600, improving the stability of the overall structure. The top cover plate 640 is located at the end of the main support frame 620 opposite to the base plate 610, providing top enclosure and protection for the mounting frame 600, and also serving as the mounting reference surface for the servo electric cylinder 500. The auxiliary support frame 650 is positioned between the top cover plate 640 and the base plate 610, together forming a box-like structure, further enhancing the overall rigidity and deformation resistance of the structure. Connecting brackets 660 securely connect the top cover plate 640 and the auxiliary support frame 650, ensuring assembly accuracy and structural strength between the structural plates. The skin 670 can cover various components as needed, improving the overall structural strength. In practical applications, the mounting frame 600 effectively enhances the overall structural strength and rigidity of the device, ensuring stable operation in the rail environment, and providing a reliable mounting foundation for the arrangement and assembly of various functional modules.

[0041] In one embodiment, such as Figure 11 , Figure 12 As shown, the rivet 120 includes a rivet head 121 and a rivet shank 122. One end of the rivet shank 122 is disposed on the rivet head 121, and the other end forms a frustum structure to facilitate drilling. Since the surface of the rivet shank 122 facing away from the rivet head 121 is flat, the press-fit head module 300 can use a flat mold, which has the advantages of low alignment accuracy requirements, good plasticity of the rivet 120, and less or no debris generated during the press-fit process. The rivet head 121 and the rivet shank 122 are provided with forming blind holes 1221 with openings located on the surface of the rivet head 121 facing away from the rivet shank 122 to reduce the press-fit forming force. At the same time, four forming grooves 1222 are provided through the rivet shank 122, and the four forming grooves 1222 are equally spaced along the circumference of the rivet shank 122 to further reduce the press-fit forming force.

[0042] like Figure 1 and Figure 2As shown, the mounting bracket 600 provides overall support and mounting reference for each functional module, ensuring the structural stability and on-orbit reliability of the overall device. A servo cylinder 500 is mounted on the mounting bracket 600 and drives the wedge mechanism 400 to move in a predetermined direction, thereby realizing the punching and riveting actions on the rivet strip 100. The wedge mechanism 400 is located at the output end of the servo cylinder 500, with one end connected to the servo cylinder 500 and the other end connected to the ratchet feeding mechanism 200. The vertical movement of the wedge mechanism 400 is achieved through the linear drive of the servo cylinder 500. The reset mechanism 440 is used to reset the wedge mechanism 400 to its initial position after each riveting action, so as to perform the next riveting cycle. The press head module 300 is used to press the rivet strip 100, achieving a reliable connection between the strip and the structure to be connected. The ratchet feeding mechanism 200 works in conjunction with the rivet strip 100 to feed the rivet strip 100 into the riveting position 331 in sequence according to the preset length through a step feeding method, ensuring the accuracy and continuity of each riveting.

[0043] In practical applications, the servo cylinder 500 first receives a control signal, driving the wedge mechanism 400 to move. Simultaneously, the servo cylinder 500 pushes the riveting head module 300 to perform a riveting operation on the rivet 120 located at the riveting position 331. During the movement of the wedge mechanism 400, the ratchet feeding mechanism 200 synchronously drives the rivet strip 100 forward at a preset pitch, precisely delivering the rivet 120 to the riveting station for efficient riveting. After the riveting operation is completed, the reset mechanism 440 is activated, driving the wedge mechanism 400 and the riveting head module 300 back to their initial positions, preparing for the next riveting cycle. Through the coordinated operation of the above mechanisms, continuous feeding and automatic riveting of the rivet strip 100 are achieved, fully meeting the application requirements of efficient and automated riveting in an on-orbit environment.

[0044] In summary, this application relates to the field of spacecraft manufacturing technology and discloses an on-orbit continuous riveting device, which includes a wedge mechanism and a ratchet feeding mechanism and a riveting head module connected thereto. The wedge mechanism is driven to perform two states: a state in which the ratchet feeding mechanism moves the rivets one by one to the pre-riveting position for feeding, and a state in which the ratchet feeding mechanism moves the rivets at the pre-riveting position to the riveting position and the riveting head module rivets the rivets at the riveting position. By setting the wedge mechanism to simultaneously drive the ratchet feeding mechanism and the riveting head module, the feeding and riveting processes can be completed in one reciprocating motion. Moreover, the entire device can realize continuous feeding and automatic riveting of rivet strips in the space on-orbit environment, overcoming the problem of traditional connection methods being affected by extreme environments such as space vacuum and high and low temperatures. It has the advantages of low environmental sensitivity and high connection efficiency, and is suitable for rapid and efficient connection of space structures and composite material components.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A continuous riveting device for on-orbit manufacturing, comprising a rivet strip, the rivet strip including a rivet band and a plurality of rivets spaced apart along the length direction of the rivet band, and the rivet band having a plurality of push teeth arranged along its length direction, characterized in that, The continuous riveting device includes a ratchet feeding mechanism, which has a pre-riveting position and a riveting position. A press-fit head module, the press-fit head module being used to move toward the riveting position and press-fit the rivet located at the riveting position; The wedge mechanism is connected to the riveting head module and the ratchet feeding mechanism respectively. The wedge mechanism is driven to have a feeding state and a riveting state respectively. In the rivet feeding state, the ratchet feeding mechanism is driven by the wedge mechanism to move the rivets one by one to the pre-rivet position, and the pressing head module is driven by the wedge mechanism to move away from the riveting position. In the riveting state, the ratchet feeding mechanism is driven by the wedge mechanism to move the rivet at the pre-riveting position to the riveting position, and the pressing head module is driven by the wedge mechanism to move toward the riveting position and press the rivet located at the riveting position. The ratchet feeding mechanism includes a feeding pin, which is connected to the wedge mechanism. The feeding pin is used to move the rivet located at the pre-riveting position to the riveting position. A ratchet, the ratchet being used to engage with the push tooth when rotating in the engagement direction and to disengage from the push tooth when rotating in the non-engaging direction; A reset elastic element is connected to the ratchet and is used to drive the ratchet to rotate in the meshing direction and move the nail band in the nail feeding state. A drive block is disposed on the feeding pin and is used to push the ratchet to rotate in the non-engaging direction in the riveting state to store energy in the reset elastic element; A push rod, which is connected to the drive block; A rotating wheel is rotatably disposed at one end of the push rod away from the drive block, and the rotation axis of the rotating wheel is parallel to the rotation axis of the ratchet. A drive wheel, the drive wheel comprising: a wheel body, the wheel body being connected to the ratchet; A drive unit is disposed on the wheel body, wherein: the drive unit abuts against the rotating wheel and is driven by the push rod to rotate the ratchet in the non-engaging direction; The driving unit is connected to the reset elastic element and is driven by the reset elastic element to drive the ratchet to rotate in the meshing direction; The wedge mechanism includes: a downward wedge block, and the riveting head module is connected to the downward wedge block; A transverse wedge block, which abuts against the downward wedge block and is driven to move by the downward wedge block; An upward-moving wedge abuts against the transverse wedge and is driven by the transverse wedge to move relative to the upward-moving wedge; the feeding pin is connected to the upward-moving wedge. The riveting head module, the riveting position, the pre-riveting position, and the feeding pin are located sequentially on the same straight line. In the riveting state, the feeding ejector pin is driven by the upward wedge to move the rivet at the pre-riveting position to the riveting position, and the pressing head module is driven by the downward wedge to move toward the riveting position and press the rivet located at the riveting position. The wedge mechanism further includes: a plurality of reset mechanisms, which are respectively connected to the transverse wedge and the upward wedge, and are used to store energy in the riveting state and drive the transverse wedge and the upward wedge to reset in the nail feeding state. The riveting head module includes: a riveting head, one end of which is connected to the lowering wedge block, and the other end forming a riveting end, which is used to rivet the rivet located at the riveting position; A plurality of secondary positioning pins are connected to the riveting head and are parallel to the riveting head. The plurality of secondary positioning pins are used to position the workpiece to be riveted.

2. The continuous riveting device for on-orbit manufacturing according to claim 1, characterized in that, The push rod includes: a sleeve; A buffer rod, one end of which is slidably disposed inside the sleeve, and the other end protruding outside the sleeve to form a buffer end, and the rotating wheel is disposed opposite to the buffer end at both ends of the sleeve, and the buffer rod is provided with a sliding hole arranged along its length. A limiting pin is slidably disposed in the sliding hole and connected to the sleeve to limit the movement distance of the buffer rod; A buffer elastic element is connected to the buffer rod and is used to drive the buffer rod to move away from the sleeve.

3. The continuous riveting device for on-orbit manufacturing according to claim 1, characterized in that, The continuous riveting device further includes: a servo electric cylinder for driving the downward wedge block to move; The servo electric cylinder includes: a servo motor; A lead screw drive mechanism is connected to the lowering wedge block, and the lowering wedge block moves under the drive of the lead screw drive mechanism; A reduction gearbox is disposed between the servo motor and the lead screw transmission mechanism.

4. The continuous riveting device for on-orbit manufacturing according to claim 3, characterized in that, The continuous riveting device further includes: a mounting frame, the mounting frame including: a base plate, and the transverse wedge block is slidably disposed on the base plate; The main support frame, wherein the downward wedge block is slidably mounted on the main support frame; Side uprights, which are opposite to the main support frame and are parallel to each other at both ends of the base plate; the upward wedge block is slidably mounted on the side uprights. The upper cover plate is disposed at one end of the main support frame away from the bottom plate, and the servo motor is disposed on the upper cover plate; An auxiliary support frame is disposed between the upper cover plate and the bottom plate; A connecting angle bracket is disposed between the upper cover plate and the auxiliary support frame.

5. The continuous riveting device for on-orbit manufacturing according to claim 1, characterized in that, The rivet includes: a rivet head; A nail rod, one end of which is disposed on the nail head, and the other end of which forms a frustum structure; A shaped blind hole is provided on the nail head and the nail shank, and the opening is located on the surface of the nail head away from the nail shank; A plurality of forming grooves are provided through the nail rod and are spaced apart along the circumference of the nail rod.

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