CN-122009536-A - Satellite capturing and locking device

CN122009536ACN 122009536 ACN122009536 ACN 122009536ACN-122009536-A

Abstract

The invention relates to a satellite capturing and locking device, and belongs to the field of satellite docking. The satellite capturing and locking device comprises a driving end and a driven end, wherein the driving end comprises a driving end base, a guide mechanism, a driving mechanism and two locking mechanisms, the guide mechanism comprises a guide frame and a guide plate, the guide plate is in an inverted conical shape, the driven end comprises a driven end base and a captured rod, the guide plate is used for guiding the captured rod into an opening, and the driving mechanism is used for driving the two locking mechanisms to move oppositely to clamp the captured rod, so that locking between the driven end and the driving end is achieved. According to the invention, the caught rod on the passive end is clamped left and right through the two locking mechanisms to realize locking, and the two locking mechanisms are symmetrically arranged left and right, namely are arranged at intervals in the transverse direction, so that the axial distance between two satellites after locking is reduced, and the volume of a satellite platform is reduced. The locking mechanism comprises a primary locking unit and a secondary locking unit, so that the ejection speed during separation can be ensured.

Inventors

YANG FEI
WANG GANG
QU HONGYI
LIU FUCHENG
KONG XIANGLONG
ZHANG JIANQIAO
XU YI
LI WENLONG

Assignees

哈尔滨工业大学
上海卫星工程研究所
北华航天工业学院

Dates

Publication Date: 20260512
Application Date: 20260306

Claims (10)

1. The satellite capturing and locking device is characterized by comprising an active end and a passive end; The driving end comprises a driving end base, a guide mechanism, a driving mechanism and two locking mechanisms which are symmetrically arranged left and right, wherein the guide mechanism, the driving mechanism and the two locking mechanisms are all arranged on the driving end base; The guide mechanism comprises a guide frame and a guide plate fixed on the guide frame, wherein the guide plate is in an inverted conical shape, and an opening is formed in the bottom of the guide plate; The passive end comprises a passive end base and a caught rod vertically fixed on the bottom surface of the passive end base; the guide plate is used for guiding the caught rod into the opening; The driving mechanism is connected with the locking mechanism and used for driving the two locking mechanisms to move in opposite directions so as to clamp the caught rod, thereby realizing the locking between the driven end and the driving end.
2. The satellite acquisition locking apparatus of claim 1, wherein the locking mechanism comprises a primary locking unit; the primary locking unit comprises a clamping claw frame, clamping claws, pin shafts and torsion springs; The clamping jaw is rotationally connected with the clamping jaw frame through the pin shaft, and the torsion spring is sleeved on the pin shaft, one end of the torsion spring is abutted with the clamping jaw frame, and the other end of the torsion spring is abutted with the clamping jaw; The inner wall of the primary locking groove, which is close to the axis of the caught rod, is an inclined surface so that the thickness of the primary locking groove is gradually increased from top to bottom; the driving mechanism is connected with the jaw frames and used for driving the two jaw frames to move in opposite directions so that the jaws are clamped into the primary locking groove.
3. The satellite acquisition locking arrangement of claim 2, wherein the locking mechanism comprises a secondary locking unit; The secondary locking unit comprises a secondary horizontal rod, a secondary shell, an abutting plate and a pressure spring; the bottom surface of the secondary shell is fixedly connected with the upper surface of the main end base; The two opposite side walls of the secondary shell are respectively provided with a first perforation and a second perforation, the secondary horizontal rod is arranged in the first perforation in a penetrating way, the first end of the secondary horizontal rod is positioned outside the secondary shell, the second end of the secondary horizontal rod is positioned in the secondary shell, the end face of the second end of the secondary horizontal rod is fixedly provided with a square horizontal rod boss, and one face of the horizontal rod boss far away from the secondary horizontal rod is fixedly provided with a locking block; The locking block comprises a locking block, a locking block and a locking block, wherein the longitudinal section of the locking block is pentagon, the pentagon comprises a horizontal side, a vertical short inclined side, a vertical long inclined side, a first vertical long side and a first vertical short side which are arranged at intervals in parallel, the first vertical long side is connected with a boss of a horizontal rod, one end of the horizontal side is connected with the lower end of the first vertical long side, the other end of the horizontal side is connected with the lower end of the vertical short inclined side, the upper end of the vertical short inclined side is connected with the lower end of the first vertical short side, the upper end of the first vertical short side is connected with the lower end of the vertical long inclined side, and the included angle between the horizontal side and the vertical short inclined side is an obtuse angle; The pressure spring is sleeved on the secondary horizontal rod, one end of the pressure spring is propped against the boss of the horizontal rod, and the other end of the pressure spring is propped against the inner wall of the secondary shell, provided with the first perforation; the abutting plate is positioned outside the secondary shell and is fixed with the secondary horizontal rod, and the abutting plate abuts against one surface of the claw frame, which is far away from the caught rod; The vertical section of the second-stage locking groove is trapezoid, the trapezoid comprises a second vertical long side, a second vertical short side, an upper inclined side and a lower inclined side, the second vertical short side is positioned between the second vertical long side and the axis of the caught rod, two ends of the upper inclined side are respectively connected with the upper end of the second vertical long side and the upper end of the second vertical short side, and two ends of the lower inclined side are respectively connected with the lower end of the second vertical long side and the lower end of the second vertical short side; When the two locking blocks clamp the caught rod, the part of the vertical long inclined edge is overlapped with the upper inclined edge, the vertical short inclined edge is overlapped with the lower inclined edge, and the first vertical short edge is overlapped with the second vertical short edge.
4. The satellite capturing and locking device according to claim 3, wherein an annular boss is arranged on the inner wall of the second through hole along the circumferential direction of the second through hole, and the horizontal rod boss abuts against the annular boss after the locking block passes through the second through hole and out of the locking shell.
5. The satellite capturing and locking apparatus according to claim 4, wherein the captured rod has a rolling groove at its bottom end, and a ball is disposed in the rolling groove.
6. The satellite capture locking apparatus of claim 5 wherein the passive guide bar is disposed on a bottom surface of the passive end mount, and wherein the active guide cylinder is disposed on an upper surface of the active end mount, and wherein the passive guide bar is insertable within the active guide cylinder.
7. The satellite capture lock of claim 6, wherein the drive mechanism comprises a motor, a first gear train, a second gear train, two lead screw nut mechanisms; The output end of the first gear transmission mechanism is connected with a nut of one screw nut mechanism; the input end of the second gear transmission mechanism is in transmission connection with the first gear transmission mechanism, and the output end of the second gear transmission mechanism is connected with the nut of the other screw nut mechanism; the two claw brackets are fixedly connected with the lead screws of the two lead screw nut mechanisms respectively; The motor is used for driving the two nuts to rotate through the first gear transmission mechanism and the second gear transmission mechanism respectively so that the two lead screws do opposite linear motion.
8. The satellite capture lock assembly of claim 7, wherein the motor is a reversible motor, the drive end mount has an elastic member thereon, and the elastic member is compressed when the captured bar is locked.
9. The satellite capture locking apparatus of claim 8, wherein the bottom surface of the passive end mount is provided with an electrical connector plug, a gas-liquid interface plug; the top surface of the drive end base is provided with an electric connector socket and a gas-liquid interface socket; The electric connector plug is in plug-in fit with the electric connector socket, and the gas-liquid interface plug is in plug-in fit with the gas-liquid interface socket.
10. The satellite capture locking apparatus of claim 9, wherein the passive end further comprises a mounting shell, a movable plate, a disc spring; The upper end of the caught rod passes through the through hole and is positioned in the mounting shell, and the upper end of the caught rod is fixed with the bottom surface of the movable plate; The disc spring is sleeved on the spring column, the upper end of the disc spring is abutted with the bottom surface of the movable plate, and the lower end of the disc spring is abutted with the bottom wall of the mounting shell; The top surface of the mounting shell is fixed with the bottom surface of the passive end base; The bottom surface of the passive end base is provided with a shear bar, and the top surface of the elastic piece is provided with a shear groove for inserting the shear bar.

Description

Satellite capturing and locking device Technical Field The invention relates to a satellite capturing and locking device, and belongs to the field of satellite docking. Background In the 80 s of the 20 th century, the united states proposed an idea of on-orbit service, and various countries began to perform tasks such as on-orbit docking, maintenance, repair and the like, and the capture and locking technology of a spacecraft became a key technology. With the development of the aerospace technology, the volume and the quality of a launched satellite are larger and larger, the functional requirements are more and more, and the capability requirement of a carrier rocket is more and more, but the carrying capability of the existing rocket is limited by the thrust and mechanical environment of an engine, and the technical bottleneck is reached. In-orbit satellite cooperative observation is currently limited by different satellite platforms being positioned at different orbit positions, and the cooperative observation precision is poor. In order to improve the collaborative observation precision, a large satellite platform needs to be provided to meet the requirement of multiple functional integration. Thus, the two satellites are locked by capturing the locking mechanism. However, after the two satellites are captured and locked, the axial distance of the two satellites is large in the prior art, so that the large satellite platform is large in size. Disclosure of Invention The invention provides a satellite capturing and locking device, which aims to solve the problem of large size of a large satellite platform after construction in the prior art. The satellite capturing and locking device comprises a driving end and a driven end, wherein the driving end comprises a driving end base, a guide mechanism, a driving mechanism and two locking mechanisms which are symmetrically arranged on the driving end base, the guide mechanism comprises a guide frame and a guide plate fixed on the guide frame, the guide plate is in an inverted conical shape, an opening is formed in the bottom of the guide plate, the driven end comprises a driven end base and a captured rod vertically fixed on the bottom surface of the driven end base, the guide plate is used for guiding the captured rod into the opening, and the driving mechanism is connected with the locking mechanisms and used for driving the two locking mechanisms to move in opposite directions to clamp the captured rod, so that locking between the driven end and the driving end is achieved. The locking mechanism comprises a first-stage locking unit, the first-stage locking unit comprises a clamping jaw frame, clamping jaws, a pin shaft and a torsion spring, the clamping jaws are connected with the clamping jaw frame in a rotating mode through the pin shaft, the torsion spring is sleeved on the pin shaft, one end of the torsion spring is abutted to the clamping jaw frame, the other end of the torsion spring is abutted to the clamping jaws, two first-stage locking grooves are formed in the outer wall of the rod to be caught, the inner wall, close to the axis of the rod to be caught, of each first-stage locking groove is an inclined surface, the thickness of each first-stage locking groove is gradually increased from top to bottom, and the driving mechanism is connected with the clamping jaw frame and used for driving the two clamping jaw frames to move in opposite directions so that the clamping jaws are clamped in the first-stage locking grooves. The locking mechanism comprises a secondary locking unit, wherein the secondary locking unit comprises a secondary horizontal rod, a secondary shell, an abutting plate and a pressure spring, and the bottom surface of the secondary shell is fixedly connected with the upper surface of the driving end base; The two opposite side walls of the secondary shell are respectively provided with a first perforation and a second perforation, the secondary horizontal rod is arranged in the first perforation in a penetrating way, the first end of the secondary horizontal rod is positioned outside the secondary shell, the second end of the secondary horizontal rod is positioned in the secondary shell, the end face of the second end of the secondary horizontal rod is fixedly provided with a square horizontal rod boss, and one face of the horizontal rod boss far away from the secondary horizontal rod is fixedly provided with a locking block; The locking block comprises a locking block, a locking block and a locking block, wherein the longitudinal section of the locking block is pentagon, the pentagon comprises a horizontal side, a vertical short inclined side, a vertical long inclined side, a first vertical long side and a first vertical short side which are arranged at intervals in parallel, the first vertical long side is connected with a boss of a horizontal rod, one end of the horizontal side is connected with the lower end of the first vertical