CN109449673B

CN109449673B - But quick replacement's on-orbit electromechanical letter integration interface

Info

Publication number: CN109449673B
Application number: CN201811436288.1A
Authority: CN
Inventors: 刘俊良; 陈新龙; 陈维春; 陈大可; 朱梦萍; 宋琦; 张翔翼; 刘宇飞
Original assignee: China Academy of Space Technology CAST
Current assignee: China Academy of Space Technology CAST
Priority date: 2018-11-28
Filing date: 2018-11-28
Publication date: 2021-02-09
Anticipated expiration: 2038-11-28
Also published as: CN109449673A

Abstract

The invention discloses an on-orbit quick-replaceable mechanical-electrical-communication integrated interface, which relates to a quick-replaceable mechanical-electrical-communication interface, and aims to solve the problem that mechanical, electrical and signal interfaces are mutually separated in the quick connection and separation process of a space reconfigurable spacecraft in the future. When the sleeve moves to the lowest end, the sleeve spring is in a compressed state, and the steel ball is completely separated from the matching surface of the groove on the outer side of the active interface; when the sleeve moves to the uppermost end, the sleeve spring is in a release state, and provides a force for extruding the steel ball, so that the steel ball is extruded to be matched and positioned with the groove on the outer side of the active interface. The reconfigurable spacecraft adopts the modes of steel ball locking and secondary redundancy design, and solves the problem of quick connection and separation of the reconfigurable spacecraft.

Description

But quick replacement's on-orbit electromechanical letter integration interface

Technical Field

The invention relates to an on-orbit quick-replaceable electromechanical telecommunication interface, in particular to a standardized universal electromechanical telecommunication interface for an on-orbit reconfigurable spacecraft.

Background

With the development of space technology, the number of in-orbit spacecrafts is difficult to meet the requirements of human beings at present. Meanwhile, aiming at solving the severe problems of non-reusability of parts, long development period, high manufacturing cost and the like in the design mode of the traditional spacecraft, the U.S. provides a reconfigurable spacecraft technology oriented to an on-orbit assembly task, wherein one of the key technologies is the quick connection and separation of the electromechanical telecommunication of the on-orbit reconfigurable spacecraft. At present, the research of related interface technologies in the aerospace field mostly focuses on replacing an interface of a space manipulator module in an on-orbit mode, and a telecommunication interface of a reconfigurable spacecraft is rarely reported, so that the problem of standardization of the reconfigurable spacecraft universal interface is to be solved.

An electromechanical and telecommunication integrated interface capable of being replaced quickly is an inevitable problem in the docking process of a spacecraft, and an astronaut is required to realize rendezvous and docking under a space weightless environment. At present, most of electromechanical telecommunication interfaces which can be replaced quickly adopt a rigid direct connection structural form, a typical rigid direct connection mode mainly comprises a threaded connection structure and the like, the interfaces have the advantages of small size, compact structure and high universality, but the threaded connection realizes the mutual locking of a male joint and a female joint by manually screwing a sleeve, so that the operation of astronauts needs to continuously provide rotating torque for compressing and releasing, and the operation complexity is greatly increased in a space environment.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the on-orbit quick-replaceable electromechanical telecommunication interface overcomes the defects of the prior art, aims at the technical difficulties faced by the reconfigurable spacecraft in the future, can meet the requirements of mutual aggregation and separation of the on-orbit spacecraft, and has the capabilities of electric energy sharing, signal mutual transmission and structural interconnection.

The technical solution of the invention is as follows:

an on-rail quick-replaceable electromechanical telecommunication integrated interface, comprising: the device comprises a male interface, an active interface, a sleeve spring, a steel ball, a passive interface, a female interface spring and a female joint;

the active interface is a cylindrical structure, the male interface is positioned in the active interface and is fixedly connected with the active interface,

the driven interface is of a cylindrical structure, the female joint is positioned in the driven interface, a female joint spring is arranged between the female joint and the driven interface, and the female joint spring is used for providing redundancy between the female joint and the driven interface along the axial direction of the female joint;

the sleeve is outside passive interface, and the sleeve spring setting is between passive interface and sleeve, and the passive interface outside evenly is provided with a plurality of locating holes along the circumference, and the steel ball is arranged in wherein, and when male interface and female joint were inserted, the steel ball cooperated with the recess of initiative interface outside circumference, realizes locking.

The front end of the active interface is provided with a conical matching surface, and the front end of the passive interface is provided with an inner conical matching surface for guiding the male interface and the female interface during plugging.

The groove on the outer side of the driving interface is circumferential, and the cross section of the groove is arc-shaped.

The inner side of the front end of the sleeve is an arc surface which is used for extruding the steel ball when the male connector and the female connector are oppositely inserted, so that the steel ball is matched with the groove on the outer side of the active connector to realize locking.

The outer side of the passive interface is provided with a positioning hole along the circumference, and the inner side of the bottom of the positioning hole is an arc surface.

When the sleeve moves to the lowest end, the sleeve spring is in a compressed state, and the steel ball is completely separated from the matching surface of the groove on the outer side of the active interface; when the sleeve moves to the uppermost end, the sleeve spring is in a release state, and provides a force for extruding the steel ball, so that the steel ball is extruded to be matched and positioned with the groove on the outer side of the active interface.

The male connector comprises an active end cable, an active end socket core, an active end corrugated pipe and an active end yielding spring;

the active end cable is positioned at the rear end of the active end socket core body, the front end of the active end socket core body is a contact pin, and the active end yielding spring is sleeved outside the active end cable and used for providing axial redundancy during plugging; the driving end corrugated pipe is sleeved on the outer side of the driving end socket core body and used for providing radial redundancy during plugging.

The female joint comprises a driven end corrugated pipe, a driven end socket core body, a driven end cable and a driven end yielding spring;

the passive end cable is positioned at the rear end of the passive end socket core body, the front end of the passive end socket core body is a jack, and the passive end yielding spring is sleeved outside the passive end cable and used for providing axial redundancy during plugging; the corrugated pipe at the driven end is sleeved on the outer side of the socket core body at the driven end and used for providing radial redundancy during plugging.

The inner conical matching surface arranged at the front end of the passive interface is subjected to surface carburization.

The cone angle of the conical mating surface at the front end of the active interface is between 5 and 10 degrees.

The male connector at least comprises 1 power supply port and 5 signal transmission ports, and the power supply ports and the 5 signal transmission ports are respectively used for transmitting power driving signals, instruction driving signals, analog quantity acquisition signals, bus signals and standard IO control signals.

The sleeve is provided with a limit position along the axial direction, and the moving range of the sleeve along the axial direction is 20mm to 30 mm.

The radius of the steel ball is the same as the value of the radius of the groove on the outer circumference of the driving interface and ranges from 8mm to 12 mm.

Compared with the prior art, the invention has the beneficial effects that:

(1) the sleeve is sleeved outside the passive interface, the sleeve spring is arranged between the passive interface and the sleeve, the steel balls are arranged in a plurality of positioning holes which are uniformly distributed on the outer side of the passive interface along the circumference, when the male interface and the female interface are inserted, the steel balls are matched with the grooves on the outer circumference of the active interface to realize locking, compared with the traditional threaded connection locking mode, the friction characteristic of the male interface in the opposite insertion process is improved due to the matching flexibility of the ball holes, and the mode can reduce 20% -30% of the required butt force in the opposite insertion process and reduce the difficulty of an astronaut in operating the opposite connection mechanism through experimental verification;

(2) the front end of the active interface is provided with a conical matching surface, the front end of the passive interface is provided with an inner conical matching surface for guiding the male interface and the female connector during plugging, and the inner conical surface of the front end of the passive interface is subjected to surface carburization; meanwhile, the front end of the passive interface is guided to the matching surface for carburization, so that the abrasion resistance in the butt joint process is improved, and the degree of abrasion of the electric connector in the butt joint process can be reduced by the method through experimental verification;

(3) the invention adopts a secondary redundancy design method, wherein an active end cable is positioned at the rear end of an active end socket core body, the front end of the active end socket core body is a contact pin, and an active end yielding spring is sleeved outside the active end cable and is used for providing axial redundancy during plugging; the active end corrugated pipe is sleeved on the outer side of the active end socket core body and used for providing radial redundancy during plugging, and experiments prove that the mode can improve the butt joint redundancy by 30-40%.

Drawings

FIG. 1 is a standard functional block partitioning diagram

FIG. 2 is a schematic structural diagram of an on-track quick change machine telecommunication interface;

FIG. 3 is a schematic diagram of a detached state of an electromechanical telecommunications interface;

FIG. 4 is a schematic diagram of the docking operation of the electromechanical telecommunication interface;

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

With the development of space technology, the number of in-orbit spacecrafts is difficult to meet the requirements of human beings at present. Meanwhile, aiming at solving the severe problems of non-reusability of parts, long development period, high manufacturing cost and the like in the design mode of the traditional spacecraft, the reconfigurable spacecraft technology oriented to the on-orbit assembly task is internationally provided, wherein one of the key technologies is the quick connection and separation of the electromechanical telecommunication of the on-orbit reconfigurable spacecraft. Therefore, the problem of standardization of a universal interface of the reconfigurable spacecraft is to be solved, and the method adopts the steel ball locking and secondary redundancy design method, so that the butt joint tolerance capability is increased while the butt joint operation convenience is improved.

As shown in fig. 1, with the standardized design, the main functional modules of the mechatronic interface include: the power supply module, the standard IO control unit, the bus module, the analog quantity acquisition module, the instruction driving module and the power driving module can be configured as required according to corresponding on-orbit service requirements.

As shown in fig. 2, the present invention provides an on-rail quick-replaceable electromechanical and telecommunication integrated interface, which includes: the device comprises a male connector 1, an active connector 2, a sleeve 3, a sleeve spring 4, a steel ball 5, a passive connector 6, a female connector spring 7 and a female connector 8;

the driving interface 2 is a cylindrical structure and can be made of but not limited to aluminum alloy materials, the male interface 1 is positioned inside the driving interface 2, an outer flange is designed at the front end of the

male interface

1, 8 through holes are formed in one circle of the flange, an inner flange is designed at the inner side of the

driving interface

2, 8 threaded holes are formed in one circle of the flange, the male interface 1 and the driving interface 2 are fixedly connected in a threaded connection mode,

the driven interface 6 is a cylindrical structure and can be made of aluminum alloy materials, the front end of the female connector 8 is provided with an outer flange the same as that of the male connector, the inner flange is arranged inside the driven

interface

6, 8 threaded holes are designed in the same way, and a mode of connecting the female connector 8 with the driven interface 6 through long screws is arranged to allow the through holes of the female connector 8 to move up and down on the outer sides of the long screws. Meanwhile, the lower end of an outer flange of the female joint 8 is connected with one side of a female joint spring 7, the upper end of an inner flange of the passive joint 6 is connected with the other side of the female joint spring 7, and the expansion amount of the female joint spring 7 along the axial direction is used for providing design redundancy between the female joint 8 and the passive joint 6 along the axial direction of the female joint 8;

the sleeve 3 is sleeved outside the passive interface 6, the sleeve 3 can be made of but not limited to aluminum alloy materials, and the sleeve spring 4 is arranged between the passive interface 6 and the sleeve 3 and used for providing extrusion force for extruding the steel ball 5 by the arc surface inside the sleeve 3; the outside of passive interface 6 evenly is provided with a plurality of locating holes along the circumference, the locating hole is formed by 1/4 spherical and cylindrical profile combination, place steel ball 5 in wherein removing, public interface 1 and female joint 8 are to inserting the time, sleeve spring 4 utilizes self compression elasticity to drive sleeve 3 and remove to the direction that is close to public interface 1 along the axial, steel ball 5 is under the squeezing action of the inboard arc surface of sleeve 3 simultaneously, move to the axis inboard along passive interface 6's locating hole, finally under the extrusion of 3 lateral walls of sleeve, make the recess cooperation of steel ball 5 and the 2 outside circumferences of initiative interface, realize locking.

The front end of the active interface 2 is provided with a conical matching surface, the front end of the passive interface 6 is provided with an inner conical matching surface, the cone angles of the conical matching surfaces of the active interface and the passive interface are both between 5 and 10 degrees, and angle tolerance allowance is distributed for guiding the male interface 1 and the female connector 8 in opposite insertion; the inner conical matching surface arranged at the front end of the passive interface 6 is subjected to surface carburization, so that the wear resistance of the matching surface can be improved in the process of oppositely inserting the passive interface 6 into the active interface 2; the groove on the outer side of the driving interface 2 is a whole circle, and the cross section of the groove is arc-shaped and is used for realizing the matching with the surface of the steel ball 5.

The inner side of the front end of the sleeve 3 is an arc surface, the radian of the arc surface is larger than that of the steel ball 5, and the steel ball 5 is extruded when the male connector 1 and the female connector 8 are oppositely inserted, so that the steel ball 5 is matched with the groove on the outer side of the driving connector 2 to realize locking. Meanwhile, the outer side of the passive connector 6 is provided with a positioning hole along the circumference, and the inner side of the bottom of the positioning hole is an arc surface, so that the steel ball 5 can be prevented from completely entering the groove on the outer side of the active connector 2; the steel ball 5 can be bearing steel, but is not limited to the bearing steel, and the radius of the steel ball is the same as the value of the groove radius of the outer circumference of the active interface 2 and ranges from 8mm to 12 mm;

when the sleeve 3 moves to the lowest end, the sleeve spring 4 is in a compressed state, and the steel ball 5 is completely separated from the matching surface of the groove on the outer side of the driving interface 2; when the sleeve 3 moves to the uppermost end, the sleeve spring 4 is in a release state, and provides a force for extruding the steel ball 5, so that the steel ball 5 is extruded to be matched and positioned with the groove on the outer side of the active interface 2; the sleeve 3 is provided with a limit position along the axial direction, the moving range of the sleeve 3 along the axial direction is 20mm to 30mm, and when the sleeve 3 moves to the limit positions at two sides, the locking and the releasing of the active interface are respectively realized.

As shown in fig. 3, the male connector 1 includes an active-end cable 9, an active-end socket core 10, an active-end bellows 11, and an active-end relief spring 12;

the active end cable 9 is located at the rear end of the active end socket core 10, the front end of the active end socket core 10 is a contact pin, and the contact pin at least comprises 1 power supply port and 5 signal transmission ports and is used for transmitting a power driving signal, an instruction driving signal, an analog quantity acquisition signal, a bus signal and a standard IO control signal respectively. The driving end yielding spring 12 is sleeved outside the driving end cable 9 and used for providing axial redundancy during plugging, and the axial redundancy is not less than 1 mm; the driving end corrugated pipe 11 is sleeved outside the driving end socket core 10, and the driving end corrugated pipe 11 can be made of, but not limited to, an aluminum alloy material, and is used for providing radial redundancy when being plugged, and can provide radial redundancy of not less than 0.5 mm.

As shown in fig. 3, the female connector 8 includes a passive end bellows 13, a passive end socket core 14, a passive end cable 15, and a passive end relief spring 16;

the passive end cable 15 is located at the rear end of the passive end socket core body 14, the front end of the passive end socket core body 14 is a jack, a power supply needle head and various data signal needle heads are arranged on a needle hole, all functions related to a functional module are achieved, the passive end yielding spring 16 is sleeved on the outer side of the passive end cable 15 and used for providing axial redundancy during plugging, and the redundancy is not less than 1 mm; the corrugated tube 13 at the driven end is sleeved outside the socket core body 14 at the driven end and used for providing radial redundancy during plugging, and the radial redundancy of not less than 0.5mm can be provided.

As shown in fig. 4, in the butt joint process of the male connector 1 and the female connector 8, an angle deviation exists between the active-end socket core 10 and the passive-end socket core 14, and because the passive corrugated tube 13 and the active corrugated tube 11 have flexibility, the passive corrugated tube 13 and the active corrugated tube 11 are bent under the traction action of the active-end socket core 10 and the passive-end socket core 14 in the butt joint process, so that the pin holes of the active-end socket core 10 and the passive-end socket core 14 are prevented from being mechanically damaged.

Those matters not described in detail in the present specification are well known in the art.

Claims

1. An on-rail quick-replaceable electromechanical telecommunication integrated interface, which is characterized by comprising: the device comprises a male connector (1), an active connector (2), a sleeve (3), a sleeve spring (4), a steel ball (5), a passive connector (6), a female connector spring (7) and a female connector (8);

the driving interface (2) is a cylindrical structure, the male interface (1) is positioned in the driving interface (2) and is fixedly connected with the driving interface (2),

the passive interface (6) is of a cylindrical structure, the female joint (8) is positioned in the passive interface (6), and a female joint spring (7) is arranged between the female joint (8) and the passive interface (6) and used for providing redundancy between the female joint (8) and the passive interface (6) along the axial direction of the female joint (8);

the sleeve (3) is arranged on the outer side of the passive interface (6), the sleeve spring (4) is arranged between the passive interface (6) and the sleeve (3), a plurality of positioning holes are uniformly formed in the outer side of the passive interface (6) along the circumference, the steel balls (5) are arranged in the positioning holes, and when the male interface (1) and the female connector (8) are oppositely inserted, the steel balls (5) are matched with the grooves in the circumference of the outer side of the active interface (2) to realize locking;

the male interface (1) comprises an active end cable (9), an active end socket core body (10), an active end corrugated pipe (11) and an active end yielding spring (12);

the active end cable (9) is positioned at the rear end of the active end socket core body (10), the front end of the active end socket core body (10) is a contact pin, and the active end yielding spring (12) is sleeved outside the active end cable (9) and used for providing axial redundancy during plugging; the driving end corrugated pipe (11) is sleeved on the outer side of the driving end socket core body (10) and used for providing radial redundancy during plugging; the female joint (8) comprises a corrugated tube (13) at a passive end, a socket core body (14) at the passive end, a cable (15) at the passive end and a yielding spring (16) at the passive end;

the passive end cable (15) is positioned at the rear end of the passive end socket core body (14), the front end of the passive end socket core body (14) is a jack, and the passive end yielding spring (16) is sleeved outside the passive end cable (15) and used for providing axial redundancy during plugging; the corrugated pipe (13) of the passive end is sleeved on the outer side of the socket core body (14) of the passive end and used for providing radial redundancy during plugging;

a plurality of positioning holes are uniformly distributed on the outer side of the passive connector (6) along the circumference, the positioning holes are formed by combining 1/4 spherical and cylindrical profiles, the steel ball (5) is placed in the positioning holes to move, the inner side of the bottom of each positioning hole is an arc surface, and the steel ball (5) can be prevented from completely entering a groove on the outer side of the active connector (2);

the front end of the active interface (2) is provided with a conical matching surface, and the front end of the passive interface (6) is provided with an inner conical matching surface for guiding the male interface (1) and the female connector (8) during opposite insertion;

the groove on the outer side of the active interface (2) is circumferential, and the cross section of the groove is arc-shaped;

the inner side of the front end of the sleeve (3) is an arc surface and is used for extruding the steel ball (5) when the male connector (1) and the female connector (8) are oppositely inserted, so that the steel ball (5) is matched with the groove on the outer side of the active connector (2) to realize locking;

when the sleeve (3) moves to the lowest end, the sleeve spring (4) is in a compressed state, and the steel ball (5) is completely separated from the matching surface of the groove on the outer side of the driving interface (2); when the sleeve (3) moves to the uppermost end, the sleeve spring (4) is in a release state, and provides the force for extruding the steel ball (5), so that the steel ball (5) is extruded to be matched and positioned with the groove on the outer side of the active interface (2);

the inner conical matching surface arranged at the front end of the passive interface (6) is subjected to surface carburization;

in the butt joint process of the male joint (1) and the female joint (8), an active end socket core body (10) and a passive end socket core body (14) have angular deviation, and due to the flexibility of the passive corrugated pipe (13) and the active corrugated pipe (11), the passive corrugated pipe (13) and the active corrugated pipe (11) are bent under the traction action of the active end socket core body (10) and the passive end socket core body (14) in the butt joint process, so that the mechanical damage of pinholes of the active end socket core body (10) and the passive end socket core body (14) is avoided;

the radius of the steel ball (5) is the same as the value of the radius of the groove on the outer circumference of the driving interface (2) and is between 8mm and 12 mm;

the sleeve (3) is axially provided with a limit position, and the moving range of the sleeve (3) along the axial direction is 20mm to 30 mm.

2. An on-rail quick-replaceable mechatronic interface according to claim 1, wherein: the cone angle of the conical matching surface at the front end of the active interface (2) is between 5 and 10 degrees.

3. An on-rail quick-replaceable mechatronic interface according to claim 1, wherein: the male connector (1) at least comprises 1 power supply port and 5 signal transmission ports, and the power supply ports and the 5 signal transmission ports are respectively used for transmitting power driving signals, instruction driving signals, analog quantity acquisition signals, bus signals and standard IO control signals.