CN112141370A - Connecting interface between module and cabin section - Google Patents
Connecting interface between module and cabin section Download PDFInfo
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- CN112141370A CN112141370A CN202010919896.9A CN202010919896A CN112141370A CN 112141370 A CN112141370 A CN 112141370A CN 202010919896 A CN202010919896 A CN 202010919896A CN 112141370 A CN112141370 A CN 112141370A
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- interface
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- driving
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G4/00—Tools specially adapted for use in space
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/64—Systems for coupling or separating cosmonautic vehicles or parts thereof, e.g. docking arrangements
- B64G1/641—Interstage or payload connectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/622—Screw-ring or screw-casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/625—Casing or ring with bayonet engagement
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
Abstract
The invention provides a connecting interface between a module and a cabin section, which comprises: an active interface and a passive interface; the active interface is arranged in the passive interface, and the active interface and the passive interface form a drawer type structure; the connection interface further comprises: the electric connector and at least one group of screw locking devices; the active part of the electric connection port is arranged at the bottom end of the passive interface, and the passive part of the electric connection port is arranged at the bottom end of the active interface; the active parts of at least one group of spiral locking devices are symmetrically arranged at two sides of the top end of the passive interface, and the passive parts of at least one group of spiral locking devices are symmetrically arranged at two sides of the top end of the active interface; the active interface and the passive interface are electrically connected through an electrical connector, and the active interface and the passive interface are fixedly connected through a spiral locking device. The invention adopts a drawer type structural design with small mass and compact structure, integrates the quick screw locking device and the electrical connector, and realizes quick maintenance or replacement of the module.
Description
Technical Field
The invention relates to the technical field of on-orbit service and maintenance of a spacecraft, in particular to a connecting interface between a module and a cabin section.
Background
In the process of on-track construction and maintenance of space facilities, the space facilities need to be decomposed into subsystems and further refined into modules. Due to reasons such as system structure, materials, space environment and fragment damage, a module unit may break down in the connection process between modules and cabin sections, and in order to reduce complexity and operation difficulty of on-track service and maintenance and improve efficiency of on-track construction and maintenance, standardized butt-joint interfaces are required to be arranged between each module and cabin sections to realize connection.
The existing connection interface between the module and the cabin section has some defects, such as large mass, complex structure, incapability of realizing quick maintenance or replacement of the module, lack of a quick locking device, incapability of realizing reliable rigid connection, low vibration resistance and stability after connection, and the like.
Disclosure of Invention
The embodiment of the invention provides a connecting interface between a module and a cabin section, and aims to solve the problems that the connecting interface between the module and the cabin section in the prior art is large in mass, complex in structure and incapable of realizing rapid maintenance or replacement of the module.
The embodiment of the invention provides a connecting interface between a module and a cabin section, which comprises: an active interface and a passive interface; the active interface is arranged in the passive interface, the passive interface is fixed on the cabin section, and the active interface and the passive interface form a drawer type structure;
the connection interface further comprises: the electric connector and at least one group of screw locking devices;
the active part of the electrical connection port is arranged at the bottom end of the passive interface, and the passive part of the electrical connection port is arranged at the bottom end of the active interface; the active parts of at least one group of the spiral locking devices are symmetrically arranged at two sides of the top end of the passive interface, and the passive parts of at least one group of the spiral locking devices are symmetrically arranged at two sides of the top end of the active interface;
the active interface and the passive interface are electrically connected through the electrical connector, and the active interface and the passive interface are fixedly connected through the spiral locking device.
Optionally, the passive interface includes: the buffer structure comprises a frame, a plurality of buffer blocks, at least one group of guide grooves and spring pins which are in one-to-one correspondence with the guide grooves, wherein the upper part of each guide groove is provided with a guide inclined plane;
at least one group of the spiral locking devices are symmetrically arranged on two sides of the top of the frame, the active part of the electric connector is fixedly connected with the bottom of the frame, the buffer blocks are uniformly distributed on the same circumference and fixedly connected with the frame, and at least one group of the guide grooves are symmetrically fixed on two side surfaces of the frame through the spring pins.
Optionally, the active interface includes: the module, the handle identifier, at least one group of guide blocks corresponding to the guide grooves and positioning sleeves corresponding to the guide blocks one to one;
the guide block is symmetrically arranged on two side faces of the module, the positioning sleeve is fixedly connected with the guide block, the handle marker is fixed to the top of the module, at least one group of passive parts of the spiral locking devices are symmetrically arranged on two sides of the top of the module, and the passive parts of the electrical connectors are fixedly connected with the bottom of the module.
Optionally, the active part of each screw locking device comprises: the device comprises a driving shell, a driving circuit board, a brushless motor, a motor adapter, an eccentric shaft, a screw, a deep groove ball bearing and a cycloidal gear speed reducer; the cycloid gear speed reduction device includes: a large internal gear, a small external gear and a large external gear;
the driving circuit board and the brushless motor are both arranged inside the active shell;
the driving circuit board is electrically connected with the brushless motor, the brushless motor is connected with the cycloidal gear speed reducer in series, a rotor shaft of the brushless motor is fixedly connected with the eccentric shaft, and the rotor shaft of the brushless motor is fixedly connected with the large inner gear through the motor adaptor;
the eccentric distances exist among the axes of the small external gear, the large internal gear and the small internal gear which are arranged on the eccentric shaft; the large outer gear is meshed with the large inner gear, meanwhile, the small outer gear is meshed with the small inner gear, the screw is fixedly connected with the small inner gear, the small inner gear is radially supported through the deep groove ball bearing, and the large inner gear is fixedly connected with the driving shell.
Optionally, the number of teeth of the large outer teeth is smaller than that of the large inner teeth, and the number of teeth of the small outer teeth is smaller than that of the small inner teeth; the phase difference between the meshing of the large external gear and the large internal gear and the phase difference between the meshing of the small external gear and the small internal gear is 180 degrees.
Optionally, the passive part of each screw locking device comprises: the device comprises a passive shell, an axial pressure spring, a nut, at least two rotation stopping steel balls, steel ball limiting, a radial pressure spring, a pressure spring baffle and a nut bottom plate;
at least three guide grooves are uniformly formed in the outer side of the nut, and each guide groove is in contact with one side of at least two rotation stopping steel balls and is used for limiting the rotation of the nut in the screwing process; the rotation stopping steel ball is arranged in a through hole of the driven shell, and the rotation stopping steel ball floats in the through hole;
the other side of the rotation stopping steel ball is fixed with the steel ball limit, one end of the radial pressure spring is fixed inside the steel ball limit, and the other end of the radial pressure spring is provided with the pressure spring baffle; the pressure spring baffle is fixed on the driven shell; the axial pressure spring is arranged at the top end of the nut, and the bottom of the nut is provided with the nut bottom plate.
Optionally, the bottom of the nut is of a spherical structure; the nut bottom plate is provided with a spherical groove, and the spherical groove is matched with the nut of the spherical structure.
Optionally, the active part of the electrical connection port includes: the device comprises a pin, an outer frame, a rotary extension piece, a guide pin, a driving pin, an upper gland, an electric connector, a connecting sleeve, a wire pressing ring, a rotating shaft, a driving barrel, an end cover, a rotor, a motor base, a driving device, a stator, a bearing lower cover, an angular contact ball bearing set, a floating support, a small ball, a spring, a fixed base, a driving copper sleeve and a guide copper sleeve;
the motor base, the driving device and the stator are sequentially and fixedly connected; the rotor is fixedly connected with the lower bearing cover; the driving barrel is fixed on the motor base, the lower bearing cover is fixedly connected with the driving barrel, and the driving device, the stator and the rotor are all arranged in the driving barrel;
the bearing lower cover, the angular contact ball bearing group and the end cover are connected in sequence; the rotating shaft is arranged on the angular contact ball bearing group; the floating support is fixed on the motor base;
the upper gland, the electric connector, the small ball, the spring, the fixed seat, the connecting sleeve and the wire pressing ring are sequentially connected, and the wire pressing ring is arranged on the rotating shaft;
the pin is fixed on the outer frame, and the rotary extension piece is arranged in the outer frame; the guide copper sleeve is arranged on the guide pin, and the drive copper sleeve is arranged on the drive pin;
the driving copper sleeve is sleeved on the driving pin and realizes axial positioning through a shaft shoulder and a shaft elastic retainer ring; the head of the rotary extension piece is uniformly distributed with at least four bosses which are used for positioning and locking in the butt joint process.
Optionally, the driving device is an ultrasonic motor.
Optionally, at least two cam curved grooves are uniformly distributed on the side surface of the rotary protruding member along the circumferential direction;
the rotary motion of the rotor is converted into rotary linear motion of the rotary protruding piece through the cam curved slot, and the driving pin and the guide pin drive the motion of the rotary protruding piece along the cam curved slot;
the driving pin is in contact with the cam curve groove through the driving copper sleeve, and the guiding pin is in contact with the cam curve groove through the guiding copper sleeve.
Compared with the prior art, the connecting interface between the module and the cabin section of the embodiment of the invention has the following beneficial effects:
the connection interface mainly includes: the active interface and the passive interface form a drawer type structure, so that the mass is small and the structure is compact; the connection interface has still integrated electric connector and at least a set of spiral locking device, the active part setting of electric connector is in the bottom of passive interface, the passive part setting of electric connector is in the bottom of active interface, the active part symmetry of at least a set of spiral locking device sets up the both sides on passive interface top, the passive part symmetry of at least a set of spiral locking device sets up the both sides on active interface top, the active interface passes through electric connector electrical connection with passive interface, the active interface passes through spiral locking device fixed connection with passive interface, moreover, the steam generator is simple in structure, small in size, can carry out quick maintenance or change to the module, quick, stable, work reliably has been realized.
Drawings
FIG. 1 is a schematic structural diagram of a connection interface between a module and a cabin segment according to an embodiment of the present invention;
FIG. 2 is a schematic view of a split structure of a connection interface between a module and a cabin segment according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of the active portion of the screw locking device provided by the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a cycloidal gear reduction unit according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a passive portion of a screw locking device provided by an embodiment of the present invention;
fig. 6 is a schematic main body view of an electrical connector provided in accordance with an embodiment of the present invention;
fig. 7 is an exploded view of an electrical connector according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Referring to fig. 1, which is a schematic structural diagram of a connection interface between a module and a cabin segment in this embodiment, the connection interface between the module and the cabin segment in this embodiment may be applied to service and maintenance occasions such as on-track assembly of space facilities and module replacement, and may also be applied to rapid assembly and construction of ground facilities. For convenience of explanation, only the portions related to the present embodiment are shown.
The connection interface between the module and the cabin segment of this embodiment mainly includes: an active interface 1 and a passive interface 3; the active interface 1 is arranged in the passive interface 3, the passive interface 3 is fixed on the cabin section, and the active interface 1 and the passive interface 3 form a drawer type structure, so that the structure is simple and compact.
The connection interface further comprises: an electrical connection port 4 and at least one set of screw locking means 2.
Referring to fig. 2, the passive part 16 of the electrical connection port is arranged at the bottom end of the active interface 1, and the active part 9 of the electrical connection port is arranged at the bottom end of the passive interface 3; the active parts 5 of at least one group of spiral locking devices are symmetrically arranged at two sides of the top end of the passive interface 3, and the passive parts 13 of at least one group of spiral locking devices are symmetrically arranged at two sides of the top end of the active interface 1; the active interface 1 is electrically connected with the passive interface 3 through an electrical connector 4, and the active interface 1 is fixedly connected with the passive interface 3 through a spiral locking device 2. The spiral locking device 2 can realize quick locking and improve the efficiency of on-orbit service and maintenance.
In the prior art, due to system structure, materials, space environment, fragment damage and the like, a module can be possibly failed. For repair or replacement of a faulty module, a standardized module-to-bay connection interface is required. However, the existing connection interface between the module and the cabin section has some defects, such as large mass, complex structure, incapability of realizing rapid maintenance or replacement of the module, lack of a rapid locking device, incapability of realizing reliable rigid connection, low vibration resistance and stability after connection, and the like. Therefore, the embodiment provides the connecting interface between the module and the cabin section, which has the advantages of high rigidity, high reliability, high support efficiency, high maintenance speed, high integration level and electromechanical integration design, so that the on-orbit service and maintenance efficiency is improved.
The connection interface between the module and the cabin section is composed of an active interface 1 and a passive interface 3, the overall configuration of the connection interface is similar to a drawer structure, the mass is small, the structure is compact, the passive interface 3 is fixed on the cabin section, the active interface 1 is operated and implemented by an auxiliary mechanical arm, and meanwhile, an electric connection port 4 and at least one group of spiral locking devices 2 are integrated, so that the connection interface can work quickly, stably and reliably, and the on-track module can be maintained or replaced.
In one embodiment, referring to fig. 2, the passive interface 3 may include: the buffer structure comprises a frame 7, a plurality of buffer blocks 10, at least one group of guide grooves 6 and spring pins 8 corresponding to the guide grooves 6 one by one, wherein the upper part of each guide groove 6 is provided with a guide inclined surface.
The active parts 5 of at least one group of spiral locking devices are symmetrically arranged on two sides of the top of the frame 7, the active parts 9 of the electric connectors are fixedly connected with the bottom of the frame 7, the plurality of buffer blocks 10 are uniformly distributed on the same circumference and fixedly connected with the frame 7, and at least one group of guide grooves 6 are symmetrically fixed on two side surfaces of the frame 7 through spring pins 8.
Further, the active interface 1 of the present embodiment may include: the module 11, the handle marker 12, at least one group of guide blocks 15 corresponding to the guide grooves 6 and the positioning sleeves 14 corresponding to the guide blocks 15 in a one-to-one mode.
The guide blocks 15 are symmetrically arranged on two side surfaces of the module 11, the positioning sleeves 14 are fixedly connected with the guide blocks 15, the handle markers 12 are fixed on the top of the module 11, the passive parts 13 of at least one group of spiral locking devices are symmetrically arranged on two sides of the top of the module 11, and the passive parts 16 of the electrical connectors are fixedly connected with the bottom of the module 11.
Specifically, the connection interface may include a guide block 15, a guide groove 6, a frame 7, a screw locking device 2, a spring pin 8, an electrical connection port 4, a buffer block 10, and the like. Wherein, the guide slots 6 are symmetrically distributed on the frame 7, the guide blocks 15 corresponding to the guide slots 6 are symmetrically distributed on the module 11, and the positioning sleeves 14 are fixedly connected with the guide blocks 15; the active parts 5 of the screw locking devices are symmetrically distributed on the frame 7, and the passive parts 13 of the matched screw locking devices are symmetrically distributed on the module 11; the active part 9 of the electric connector is fixedly connected with the frame 7, and the passive part 16 of the electric connector is fixedly connected with the module 11; the plurality of buffer blocks 10 are uniformly distributed on the same circumference and fixedly connected with the frame 7.
Meanwhile, a guide slope is provided at the upper portion of the guide groove 6, and guide blocks 15 are provided at both sides of the module 11. When the auxiliary mechanical arm operates the butt joint process through the handle identifier 12, the guide block 15 slides into the guide groove 6 along the guide inclined plane on the upper portion of the guide groove 6, and is matched with the guide inclined plane on the upper portion of the guide groove 6 through the positioning sleeve 14, so that initial pose errors are reduced, and high-precision positioning is achieved.
When the guide block 15 on the module 11 slides down the guide slot 6, the active part 5 of the screw lock is aligned with the passive part 13 of the screw lock. When the module 11 continues to move to the bottom, the active part 5 of the screw lock protrudes inside the passive part 13 of the screw lock and generates a sufficient initial axial pressure. Then, the screw locking device 2 performs a locking action; after locking, the active part 9 of the electric connector extends out to be electrically connected with the passive part 16 of the electric connector, so that the electric connector can work quickly, stably and reliably, the maintenance speed is high, and the fault repairing efficiency is improved.
It should be understood that the number of the screw locking devices 2 in this embodiment is not particularly limited, and may be 1, one set, or a plurality of screw locking devices, and in order to ensure the stability of the structure, the number of the screw locking devices 2 is preferably a set that is symmetrically arranged. Similarly, the number of the guide grooves 6, the guide blocks 15, and the positioning sleeves 14 is not particularly limited in this embodiment.
In one embodiment, referring to fig. 3, the active part 5 of each screw locking device may comprise: the driving device comprises a driving shell 19, a driving circuit board 17, a brushless motor 18, a motor adaptor 20, an eccentric shaft 21, a screw 24 and a cycloidal gear speed reducer; wherein, cycloid gear reduction unit includes: a large internal gear 22, a small internal gear 23, a small external gear 26, and a large external gear 27.
The driving circuit board 17 and the brushless motor 18 are both arranged inside the active housing 19; the driving circuit board 17 is electrically connected with the brushless motor 18, the brushless motor 18 is connected with the cycloidal gear speed reducer in series, a rotor shaft of the brushless motor 18 is fixedly connected with the eccentric shaft 21, and the rotor shaft of the brushless motor 18 is fixedly connected with the large inner gear 22 through the motor adaptor 20.
Eccentricity exists among the axes of the small external gear 26, the large external gear 27, the large internal gear 22 and the small internal gear 23 which are arranged on the eccentric shaft 21; the large external gear 27 is meshed with the large internal gear 22, the small external gear 26 is meshed with the small internal gear 23, the screw 24 is fixedly connected with the small internal gear 23, the small internal gear 23 is radially supported through the screw 24, and the large internal gear 22 is fixedly connected with the driving shell 19.
Optionally, the parameters of the brushless motor 18 selected by the screw locking device 2 of the present embodiment may be: rated voltage 24V, rated torque 15.32 mNm.
Alternatively, the number of teeth of the large external gear 27 is smaller than that of the large internal gear 22, and the number of teeth of the small external gear 26 is smaller than that of the small internal gear 23. The large external gear 27 of the present embodiment is engaged with the large internal gear 22 at a phase different from the phase at which the small external gear 26 is engaged with the small internal gear 23 by 180 °.
The cycloidal gear speed reducer with less tooth difference is mainly designed and modified aiming at the theoretical tooth profile equation of the inner cycloidal gear and the outer cycloidal gear. For example, as shown in fig. 4, the large external gear 27 has 1 fewer teeth than the large internal gear 22, the small external gear 26 has 1 fewer teeth than the small internal gear 23, the pins 30 of the small external gear 26 are in contact with the pin 30 holes of the large external gear 27 when the gears are engaged, and different transmission ratios can be obtained according to the designed difference between the number of teeth of the large external gear 27 and the number of teeth of the small external gear 26.
Exemplarily, referring to fig. 4, the number of teeth of the large external teeth 29 of the present embodiment may be 14, the number of teeth of the large internal teeth 28 is 15, the circular arc radius of the tooth profile of the large external teeth 29 is 2mm, and the pitch circle radius of the large external teeth 29 is 19 mm; the number of teeth of the small external teeth 31 can be 13, the number of teeth of the small internal teeth 32 is 14, the circular arc radius of the tooth profile of the small external teeth 31 is 2mm, and the pitch circle radius of the small external teeth 31 is 15 mm. According to the designed number of teeth of the duplex cycloidal gear, the number of teeth of the large external gear 29, the number of teeth of the large external gear 27 is 14, the number of teeth of the small external gear 31, the number of teeth of the small external gear 26 is 13, the reduction ratio is 196, the theoretical output torque of the screw locking device 2 can be calculated to be 2.94Nm, the theoretical output rotating speed is 63rpm, and the locking speed is high.
Specifically, the main structure of the driving part 5 of the screw locking device adopts a motor drive and a cycloidal gear reducer which are connected in series. The rotor shaft of the brushless motor 18 is fixedly connected with an eccentric shaft 21 and fixedly connected with a large inner gear 22 through a motor adaptor 20, and the brushless motor 18 is controlled by a bottom driving circuit board 17. The eccentric shaft 21 has eccentricity between the axis of the shaft segment mounting the small external gear 26 and the large external gear 27 and the axis of the other shaft segment. The large external gear 27 meshes with the large internal gear 22, the small external gear 26 meshes with the small internal gear 23, a phase difference of 180 ° is formed between them, and the screw 24 is fixedly connected to the small internal gear 23. The small internal gear 23 is radially supported by a screw 24 and is axially fixed with the end cover by a bearing retainer ring. The large internal gear 22 is fixedly connected with the housing. In order to ensure the coaxiality requirement, the eccentric shaft 21 of the present embodiment is supported by bearings at a plurality of positions.
The driving part 5 of the screw locking device of the above embodiment adopts the combination of the brushless motor 18 and the cycloid gear speed reducer, the brushless motor 18 drives the eccentric shaft 21 to rotate, and the output of large torque is generated after the meshing of the duplex cycloid gears, so that the locking speed is improved.
In one embodiment, referring to fig. 5, the passive portion 13 of each screw locking device may comprise: the device comprises a passive shell 33, an axial compression spring 34, a nut 35, at least two rotation stopping steel balls 36, a steel ball limit 37, a radial compression spring 38, a compression spring baffle 39 and a nut bottom plate 40.
At least three guide grooves 6 are uniformly arranged on the outer side of the nut 35, and each guide groove 6 is in contact with one side of at least two rotation stopping steel balls 36 and is used for limiting the rotation of the nut 35 in the tightening process; the rotation stopping steel ball 36 is arranged in the through hole of the driven shell 33, and the rotation stopping steel ball 36 floats in the through hole; a steel ball limit 37 is fixed on the other side of the rotation stopping steel ball 36, one end of a radial pressure spring 38 is fixed inside the steel ball limit 37, and a pressure spring baffle 39 is arranged at the other end of the radial pressure spring 38; the pressure spring baffle 39 is fixed on the passive shell 33; the axial compression spring 34 is arranged at the top end of the nut 35, and the nut bottom plate 40 is arranged at the bottom of the nut 35.
Optionally, the bottom of the nut 35 is a spherical structure; the nut base plate 40 is provided with a spherical groove adapted to the nut 35 of spherical configuration.
Illustratively, the passive part 13 of the screw locking device mainly comprises a nut 35, a rotation stopping steel ball 36, an axial compression spring 34, a radial compression spring 38, a shell and the like. As shown in fig. 5, 3 guide grooves are uniformly distributed in the circumferential direction of the nut 35, and each guide groove is matched with 2 rotation stopping steel balls 36, so that the rotation of the nut 35 in the screwing process can be limited; the rotation stopping steel ball 36 is installed in the through hole of the shell and can float left and right in the through hole, and the radial pressure spring ensures that the nut 35 has a certain floating amount in the circumferential direction. An axial compression spring 34 is arranged at the rear part of the nut 35 to provide enough connection pre-pressure during the screwing process. The front end of the nut 35 is designed into a spherical configuration, and is matched with the spherical groove on the nut bottom plate 40, so that certain angle deviation correction can be realized.
The spiral locking device 2 of the embodiment can realize quick and reliable connection and locking between the interfaces, and the cycloidal gear speed reducer has the advantages of small structure, light weight, capability of obtaining larger transmission ratio and better bearing capacity and transmission efficiency than a common speed reducer.
In one embodiment, referring to fig. 6 and 7, the electrical connection port 4 comprises: the device comprises a pin 41, an outer frame 42, a rotary protruding piece 43, a guide pin 44, a driving pin 45, an upper pressing cover 46, an electric connector 47, a connecting sleeve 48, a pressing wire ring 49, a rotating shaft 50, a driving barrel 51, an end cover 52, a rotor 53, a motor base 54, a driving device (not shown in the figure), a stator 57, a bearing lower cover 58, an angular contact ball bearing set (an angular contact ball bearing 58 and an angular contact ball bearing 59), a floating support 60, a small ball 61, a spring 62, a fixed base 63, a driving copper sleeve 64 and a guide copper sleeve 65.
The motor base 54, the driving device and the stator 57 are sequentially and fixedly connected; the rotor 53 is fixedly connected with the bearing lower cover 58; the driving barrel 51 is fixed on the motor base 54, the bearing lower cover 58 is fixedly connected with the driving barrel 51, and the driving device, the stator 57 and the rotor 53 are all arranged in the driving barrel 51; the bearing lower cover 58, the angular contact ball bearing group and the end cover 52 are connected in sequence; the rotating shaft 50 is arranged on the angular contact ball bearing set; the floating support 60 is fixed on the motor base 54; the upper gland 46, the electric connector 47, the small ball 61, the spring 62, the fixed seat 63, the connecting sleeve 48 and the line pressing ring 49 are sequentially connected, and the line pressing ring 49 is arranged on the rotating shaft 50; the pin 41 is fixed on the outer frame 42, and the rotary protruding piece 43 is arranged in the outer frame 42; the guide copper sleeve 65 is arranged on the guide pin 44, and the drive copper sleeve 64 is arranged on the drive pin 45; wherein the drive copper sleeve 64 is axially positioned on the drive pin 45 by a shoulder and a circlip for the shaft; at least four bosses are uniformly distributed at the head of the rotary protruding piece 43 and used for positioning and locking in the butt joint process.
The electrical connector 4 may also include a gasket 55. The gasket 55 is arranged between the stator 56 and the motor base 54, so that friction is reduced, and the structure is protected.
Optionally, the driving device of this embodiment is an ultrasonic motor. The electric connector 4 adopts an ultrasonic vibrator to directly drive the rotor 53, and then the rotor 53 drives the cam groove actuating mechanism to rotate, so that the connecting terminal is driven to extend out, the plugging action is realized, the speed is high, and the work is stable.
Alternatively, the side surface of the rotating projection 43 is evenly distributed with at least two cam curved grooves along the circumferential direction. In the embodiment, a plurality of cam curves at the early stage are compared and analyzed, and finally, a non-singular cam curve in a graph form is adopted. Illustratively, the cam curves consist of two sets of drive curves and guide curves, evenly distributed over the circumferential surface of the rotating projection 43. The rotary extension piece 43 is provided with a pin, the motion is transmitted to the rotary extension piece 43 through a driving curve, the pin on the rotary extension piece 43 is plugged into the supporting and fixing piece to guide the motion to a certain degree, and the whole motion process has three stages of lifting, rotating and pulling back.
The rotary motion of the rotor 53 is converted into a rotary linear motion of the rotary projection 43 through the cam curved slot, and the driving pin 45 and the guiding pin 44 both drive the motion of the rotary projection 43 along the cam curved slot; drive pin 45 contacts the cam curve groove through drive copper sleeve 64 and guide pin 44 contacts the cam curve groove through guide copper sleeve 65.
Specifically, the active and passive portions of the electrical connector 4 of the present embodiment are isomorphic. The rotor is directly driven by the ultrasonic vibrator, and the rotor 53 drives the cam groove actuating mechanism to rotate to drive the electric connector 47 to extend out, so that plugging and unplugging actions are realized. In order to reduce the mass and volume, the driving device uses an ultrasonic motor as a driving source, the piezoelectric ceramic is used for exciting a vibration motion power source with ultrasonic frequency, the input electric energy generates electric potential energy on the piezoelectric ceramic and is converted into strain energy under the action of inverse piezoelectric effect, and the stator 56 is further converted into mechanical kinetic energy of the rotor 53 under the resonance phenomenon to be output. The ultrasonic motor has the advantages of simple structure, quick response, low noise, power failure self-locking, no magnetic field interference, high control precision and the like, and has the characteristics of low temperature resistance, vacuum and the like which are suitable for space conditions, thereby being widely applied in the field of aerospace.
Further, the rotor 53 is fixedly connected with a lower bearing cover 57, the lower bearing cover 57 is fixedly connected with the driving barrel 51, the driving barrel 51 and the outer frame 42 are radially supported and axially limited by virtue of an angular contact ball bearing set, and the rotary motion of the rotor 53 is converted into the rotary linear motion of the rotary protruding member 43 through a cam transmission mechanism. The primary function of the drive pin 45 is to drive the movement of the rotating projection 43 along the cam curve slot. The drive stud 45 is not in direct contact with the cam curved slot, which is achieved by the drive copper sleeve 64 to effect contact of the drive stud 45 within the curved slot. The driving copper sleeve 64 is axially positioned on the driving pin 45 through a shaft shoulder and a shaft elastic retainer ring, the driving copper sleeve 64 is in sliding contact with the driving pin 45, and the driving copper sleeve 45 is also in sliding contact in a curved groove, so that friction can be reduced.
The rotating extension 43 of this embodiment is a key part of the entire electrical connector 4, and plays a role in active and passive docking. Two driving curve grooves are uniformly distributed on the part along the circumferential direction, the driving pin 45 and the guiding pin 44 generate corresponding movement along the cam curve grooves, and four bosses similar to petals are uniformly distributed at the head of the rotary extension piece 43 and used for positioning and locking in the butt joint process.
The electrical connector 4 of the embodiment adopts ultrasonic drive, and has the advantages of simple structure, quick response, low noise, power failure self-locking, no magnetic field interference, high control precision and the like; the cam curve slot actuating mechanism is driven by the rotor 53 to rotate, and the rising, rotating and pulling-back actions can be realized at one time by adopting a nonsingular cam curve.
In the embodiment, the connection interface between the module and the cabin section adopts a drawer type structural design with small quality and compact structure, and the spiral locking device 2 and the electrical connection port 4 are integrated, so that the quick, stable and reliable work can be realized; the spiral locking device 2 can realize quick and reliable connection and locking between interfaces, and the adopted cycloidal gear speed reducer has small structure, light weight, larger transmission ratio and more advantages than a common speed reducer in the aspects of bearing capacity and transmission efficiency; the electric connector 4 is driven by ultrasound, has the advantages of simple structure, quick response, low noise, power failure self-locking, no magnetic field interference, high control precision and the like, and the rotor 53 drives the cam groove actuating mechanism to rotate, and the actions of ascending, rotating and pulling back can be realized at one time by adopting a nonsingular cam curve.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A connection interface between a module and a bay, comprising: an active interface and a passive interface; the active interface is arranged in the passive interface, the passive interface is fixed on the cabin section, and the active interface and the passive interface form a drawer type structure;
the connection interface further comprises: the electric connector and at least one group of screw locking devices;
the active part of the electrical connection port is arranged at the bottom end of the passive interface, and the passive part of the electrical connection port is arranged at the bottom end of the active interface; the active parts of at least one group of the spiral locking devices are symmetrically arranged at two sides of the top end of the passive interface, and the passive parts of at least one group of the spiral locking devices are symmetrically arranged at two sides of the top end of the active interface;
the active interface and the passive interface are electrically connected through the electrical connector, and the active interface and the passive interface are fixedly connected through the spiral locking device.
2. A module to bay connection interface as claimed in claim 1 wherein the passive interface comprises: the buffer structure comprises a frame, a plurality of buffer blocks, at least one group of guide grooves and spring pins which are in one-to-one correspondence with the guide grooves, wherein the upper part of each guide groove is provided with a guide inclined plane;
at least one group of the spiral locking devices are symmetrically arranged on two sides of the top of the frame, the active part of the electric connector is fixedly connected with the bottom of the frame, the buffer blocks are uniformly distributed on the same circumference and fixedly connected with the frame, and at least one group of the guide grooves are symmetrically fixed on two side surfaces of the frame through the spring pins.
3. A connection interface between a module and a nacelle according to claim 2, wherein said active interface comprises: the module, the handle identifier, at least one group of guide blocks corresponding to the guide grooves and positioning sleeves corresponding to the guide blocks one to one;
the guide block is symmetrically arranged on two side faces of the module, the positioning sleeve is fixedly connected with the guide block, the handle marker is fixed to the top of the module, at least one group of passive parts of the spiral locking devices are symmetrically arranged on two sides of the top of the module, and the passive parts of the electrical connectors are fixedly connected with the bottom of the module.
4. A module-to-module connection interface as claimed in claim 1, wherein the active portion of each said screw locking means comprises: the device comprises a driving shell, a driving circuit board, a brushless motor, a motor adapter, an eccentric shaft, a screw, a deep groove ball bearing and a cycloidal gear speed reducer; the cycloid gear speed reduction device includes: a large internal gear, a small external gear and a large external gear;
the driving circuit board and the brushless motor are both arranged inside the active shell;
the driving circuit board is electrically connected with the brushless motor, the brushless motor is connected with the cycloidal gear speed reducer in series, a rotor shaft of the brushless motor is fixedly connected with the eccentric shaft, and the rotor shaft of the brushless motor is fixedly connected with the large inner gear through the motor adaptor;
the eccentric distances exist among the axes of the small external gear, the large internal gear and the small internal gear which are arranged on the eccentric shaft; the large outer gear is meshed with the large inner gear, meanwhile, the small outer gear is meshed with the small inner gear, the screw is fixedly connected with the small inner gear, the small inner gear is radially supported through the deep groove ball bearing, and the large inner gear is fixedly connected with the driving shell.
5. A connection interface between a module and a bay section as claimed in claim 4,
the number of teeth of the large outer teeth is smaller than that of the large inner teeth, and the number of teeth of the small outer teeth is smaller than that of the small inner teeth; the phase difference between the meshing of the large external gear and the large internal gear and the phase difference between the meshing of the small external gear and the small internal gear is 180 degrees.
6. A module to bay connection interface as claimed in claim 1 wherein the passive portion of each screw locking means comprises: the device comprises a passive shell, an axial pressure spring, a nut, at least two rotation stopping steel balls, steel ball limiting, a radial pressure spring, a pressure spring baffle and a nut bottom plate;
at least three guide grooves are uniformly formed in the outer side of the nut, and each guide groove is in contact with one side of at least two rotation stopping steel balls and is used for limiting the rotation of the nut in the screwing process; the rotation stopping steel ball is arranged in a through hole of the driven shell, and the rotation stopping steel ball floats in the through hole;
the other side of the rotation stopping steel ball is fixed with the steel ball limit, one end of the radial pressure spring is fixed inside the steel ball limit, and the other end of the radial pressure spring is provided with the pressure spring baffle; the pressure spring baffle is fixed on the driven shell; the axial pressure spring is arranged at the top end of the nut, and the bottom of the nut is provided with the nut bottom plate.
7. A connection interface between a module and a nacelle according to claim 6, wherein the bottom of the nut is of spherical configuration; the nut bottom plate is provided with a spherical groove, and the spherical groove is matched with the nut of the spherical structure.
8. A module-to-bay connection interface as claimed in claim 1 wherein the active portion of the electrical connection port comprises: the device comprises a pin, an outer frame, a rotary extension piece, a guide pin, a driving pin, an upper gland, an electric connector, a connecting sleeve, a wire pressing ring, a rotating shaft, a driving barrel, an end cover, a rotor, a motor base, a driving device, a stator, a bearing lower cover, an angular contact ball bearing set, a floating support, a small ball, a spring, a fixed base, a driving copper sleeve and a guide copper sleeve;
the motor base, the driving device and the stator are sequentially and fixedly connected; the rotor is fixedly connected with the lower bearing cover; the driving barrel is fixed on the motor base, the lower bearing cover is fixedly connected with the driving barrel, and the driving device, the stator and the rotor are all arranged in the driving barrel;
the bearing lower cover, the angular contact ball bearing group and the end cover are connected in sequence; the rotating shaft is arranged on the angular contact ball bearing group; the floating support is fixed on the motor base;
the upper gland, the electric connector, the small ball, the spring, the fixed seat, the connecting sleeve and the wire pressing ring are sequentially connected, and the wire pressing ring is arranged on the rotating shaft;
the pin is fixed on the outer frame, and the rotary extension piece is arranged in the outer frame; the guide copper sleeve is arranged on the guide pin, and the drive copper sleeve is arranged on the drive pin;
the driving copper sleeve is sleeved on the driving pin and realizes axial positioning through a shaft shoulder and a shaft elastic retainer ring; the head of the rotary extension piece is uniformly distributed with at least four bosses which are used for positioning and locking in the butt joint process.
9. A connection interface between a module and a nacelle according to claim 8, wherein said drive means is an ultrasonic motor.
10. A module to bay connection as claimed in claim 8 wherein the side of the rotating projection has at least two cam curve grooves distributed circumferentially and uniformly;
the rotary motion of the rotor is converted into rotary linear motion of the rotary protruding piece through the cam curved slot, and the driving pin and the guide pin drive the motion of the rotary protruding piece along the cam curved slot;
the driving pin is in contact with the cam curve groove through the driving copper sleeve, and the guiding pin is in contact with the cam curve groove through the guiding copper sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010919896.9A CN112141370A (en) | 2020-09-04 | 2020-09-04 | Connecting interface between module and cabin section |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010919896.9A CN112141370A (en) | 2020-09-04 | 2020-09-04 | Connecting interface between module and cabin section |
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| CN112141370A true CN112141370A (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010919896.9A Pending CN112141370A (en) | 2020-09-04 | 2020-09-04 | Connecting interface between module and cabin section |
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| CN106945852A (en) * | 2017-03-09 | 2017-07-14 | 兰州空间技术物理研究所 | A kind of space load butt-joint locking and emergent unblock interface arrangement |
| CN109178353A (en) * | 2018-09-03 | 2019-01-11 | 哈尔滨工业大学 | A kind of fast junction apparatus of buckle type model aerospace system sensor |
| CN111099043A (en) * | 2020-01-14 | 2020-05-05 | 中国科学院空间应用工程与技术中心 | Load adapter with guide convex block |
| CN111114853A (en) * | 2019-12-24 | 2020-05-08 | 兰州空间技术物理研究所 | Docking and locking interface device capable of conducting heat actively for space aircraft |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5112154A (en) * | 1990-12-31 | 1992-05-12 | The United States Of America As Represented By The Administrator, National Aeronautics And Space Administration | Connection space reduction mechanism |
| CN203593176U (en) * | 2013-11-20 | 2014-05-14 | 上海宇航系统工程研究所 | Connection and disconnection device |
| CN106945852A (en) * | 2017-03-09 | 2017-07-14 | 兰州空间技术物理研究所 | A kind of space load butt-joint locking and emergent unblock interface arrangement |
| CN109178353A (en) * | 2018-09-03 | 2019-01-11 | 哈尔滨工业大学 | A kind of fast junction apparatus of buckle type model aerospace system sensor |
| CN111114853A (en) * | 2019-12-24 | 2020-05-08 | 兰州空间技术物理研究所 | Docking and locking interface device capable of conducting heat actively for space aircraft |
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