Cable access protection device suitable for extravehicular operation of astronaut

Abstract

The invention relates to a cable access protection device suitable for extravehicular operation of an astronaut, and belongs to the field of spacecraft power supply system maintenance. The cable path protection device comprises an on-orbit installation assembly and a short circuit path assembly. Wherein the in-orbit mounting assembly is used for mounting the device base at the position of a cabin body; and the short-circuit path assembly is mounted on the device base and is used for short-circuiting the power output cable. According to the invention, the disconnected operable cable can be installed to form a protection loop when astronaut outboard equipment is maintained, and finally, the safety of on-orbit personnel and equipment is guaranteed when the outboard equipment is maintained.

Description

Technical Field

[0001] The invention relates to a cable path protection device suitable for astronauts' extravehicular operations, and the technology relates to the field of reliability and safety of spacecraft power supply systems. Background Art

[0002] According to the reliability FMEA analysis of the space station power system, as the on-orbit operating time increases, the reliability of extravehicular equipment will gradually decrease and the equipment failure rate will increase. Therefore, many extravehicular equipment need to be repaired and replaced based on the on-orbit working conditions.

[0003] During the equipment failure repair and replacement process, many cable ends connected to the equipment have high voltage, especially the equipment connected to the solar wing power output path. During the replacement of the faulty equipment, it is necessary to ensure that the exposed voltage at the cable end is disconnected so as not to cause safety hazards to other equipment and personnel. Summary of the invention

[0004] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art and provide a cable path protection device suitable for astronauts' extravehicular operations, which can disconnect the cable electrical connector for short-circuit protection and ensure the safety of personnel and related equipment during the maintenance process.

[0005] The technical solution of the present invention is: a cable path protection device suitable for astronauts to operate outside the cabin, the device includes an on-orbit installation component, a device base, and a short-circuit path component; wherein,

[0006] An on-orbit installation assembly is used to install the device base at the cabin position;

[0007] The short-circuit path assembly is installed on the base of the device and is used to short-circuit the power output cable.

[0008] Preferably, the short-circuit path assembly comprises an electrical connector, a busbar, an upper insulating plate, a lower insulating plate and a wire;

[0009] The electrical connector is installed outside the device base, and the busbar is installed inside the device base through an upper insulating plate and a lower insulating plate, and is insulated from the base. The nodes on the electrical connector are connected one by one with the copper sheets on the busbar through wires.

[0010] Preferably, the electrical connector forms a certain angle with the device base, and the installation angle is designed according to the on-track requirements.

[0011] Preferably, the cable path protection device suitable for astronauts' extravehicular operations further comprises a wire binding rack, and the cables are bound and fixed by the wire binding rack on the device base, and the wire binding rack is integrally formed with the device base.

[0012] Preferably, there are two on-track mounting components, which are located on both sides of the device base.

[0013] Preferably, the on-track mounting assembly includes a large locating pin, a small locating pin, a threaded hole, a large locating pin hole, a small locating pin hole, and a non-slip fastening device;

[0014] The large locating pin and the small locating pin are located on the cabin body; the large locating pin hole and the small locating pin hole are located on the base of the device. The large locating pin cooperates with the large locating pin hole, and the small locating pin cooperates with the small locating pin hole to achieve installation positioning. The fastening device is screwed into the threaded hole without coming out to complete the on-track fixation of the protective device.

[0015] Preferably, a retaining spring and a protective shell are designed outside the large positioning pin hole;

[0016] The clamping spring is used for clamping the positioning pin, and the protective shell is used for protecting the positioning pin.

[0017] Preferably, the spring clip is made of beryllium copper.

[0018] Preferably, the cable passage protection device suitable for astronauts' extravehicular operations also includes a protective cover, which is made of elastically deformable material and connected to the device base through an installation notch. When in use, the protective cover is removed, transported out of the cabin, and transported and installed outside the cabin.

[0019] Preferably, the cable path protection device suitable for astronauts' extravehicular operations also includes a handle, and when the astronauts perform track alignment and installation operations, they transfer and align the cable path by grasping the handle.

[0020] Compared with the existing state, the technical effects of the present invention are:

[0021] (1) The cable path protection device of the present invention, which is suitable for astronauts' extravehicular operations, can short-circuit the power output cable during the on-orbit maintenance phase of the aircraft, thereby ensuring the safety of the power output equipment and astronauts during the on-orbit maintenance. After the maintenance is completed, the protection device can be withdrawn in an orderly manner, and the live cable continues to be connected to the replacement equipment to ensure subsequent normal operation.

[0022] (2) A cable path protection device suitable for astronauts' extravehicular operations of the present invention can short-circuit the power path at the output end according to the maintenance position of the power path when a device on the power transmission path fails.

[0023] (3) The cable path protection device of the present invention, which is suitable for astronauts to operate outside the cabin, is used during the maintenance phase. When a power path fails, the operator can effectively and safely complete the relevant maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the appearance of a cable path protection device for astronauts to operate outside the cabin according to an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the installation of a retaining spring in a cable path protection device for astronauts to operate outside the cabin according to an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of a reserved interface on a cabin of a cable path protection device for astronauts' extravehicular operations according to an embodiment of the present invention.

[0027] FIG. 4( a ) is a schematic diagram of the dimensions of a handle of a cable passage protection device for astronauts to operate outside the cabin according to an embodiment of the present invention.

[0028] FIG4( b ) is a side view of a cable path protection device for astronauts to operate outside the cabin according to an embodiment of the present invention.

[0029] FIG5( a ) is a front schematic diagram of a short-circuit protection assembly of a cable path protection device for astronaut extravehicular operation according to an embodiment of the present invention.

[0030] FIG5( b ) is a side schematic diagram of a short-circuit protection assembly of a cable path protection device for astronaut extravehicular operation according to an embodiment of the present invention.

[0031] Figure 6 This is a schematic diagram of the installation angle of the electrical connector of a cable path protection device for astronauts to operate outside the cabin according to an embodiment of the present invention.

[0032] Figure 7 A schematic diagram of a protective cover of a cable passage protection device for astronauts' extravehicular operations according to an embodiment of the present invention.

[0033] Figure 8 This is a schematic diagram of the installation of an electrical connector for a protection circuit of a cable path protection device for astronauts operating outside the cabin according to an embodiment of the present invention.

[0034] FIG. 9( a ) is a diagram showing the internal structure of a short-circuit path component according to an embodiment of the present invention.

[0035] FIG. 9( b ) is a copper bus bar of a short-circuit path assembly according to an embodiment of the present invention.

[0036] Fig.10 This is an application of the cable channel protection device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0037] The following will further describe in detail the installation layout, principle, use and other implementation methods of a cable path protection device suitable for astronauts' extravehicular operations of the present invention in conjunction with the accompanying drawings.

[0038] like Figure 1As shown, in order to achieve the above purpose, the present invention provides a cable path protection device for astronauts to operate outside the cabin, wherein the cable path protection device is installed on the track by astronauts wearing space suits outside the cabin through an on-track installation component. The device includes an on-track installation component, a device base, a short-circuit path component, and a handle 3.

[0039] An on-orbit installation assembly is used to install the device base at the cabin position;

[0040] A path component is installed on the device base 1 and is used to short-circuit the power output cable to achieve a protection function;

[0041] When astronauts perform in-orbit installation operations, they rely on grasping the handles to transport and install them.

[0042] As shown in FIG. 5( a ) and FIG. 5( b ), the short-circuit path assembly includes an electrical connector 13 , a busbar 14 , an upper insulating plate 15 , a lower insulating plate 16 , and wires; a protective cover 2 , and a wire binding frame.

[0043] The electrical connector is installed outside the device base, and the bus copper bar 14 is installed inside the device base through the upper insulating plate 15 and the lower insulating plate 16, and is insulated from the device base 1. The nodes on the electrical connector are connected to the copper sheets on the bus copper bar through wires. The upper insulating plate 15 and the lower insulating plate 16 play an insulating and protective role.

[0044] like Figure 6 As shown, the electrical connector forms a certain angle with the device base, and the installation angle is designed according to the on-track needs.

[0045] like Figure 5a and Figure 5b As shown, the cables can be tied and fixed on the cable binding frame on the device base 1, and the cable binding frame is integrally formed with the device base 1.

[0046] There are two on-track mounting components, located on both sides of the device base, and the on-track mounting position is selected for installation according to work needs and the cabin layout. The on-track mounting components include a large positioning pin 5, a small positioning pin 6, a threaded hole 7, a large positioning pin hole 8, a small positioning pin hole 9, and a non-slip fastening device 12; there are two threaded holes 7, a part of the on-track mounting components is reserved on the cabin, and a part is installed on the device body, matching the design on the cabin.

[0047] like Figure 3 As shown, the large positioning pin 5 and the small positioning pin 6 are located on the cabin body; Figure 1 As shown, the large positioning pin hole 8, the small positioning pin hole 9, and the non-slipping fastening device 12 are located on the device base 1, the large positioning pin 5 cooperates with the large positioning pin hole 8, and the small positioning pin 6 cooperates with the small positioning pin hole 9 to achieve installation positioning, and the non-slipping fastening device 12 is screwed into the threaded hole 7 to complete the on-track fixation of the protective device.

[0048] like Figure 2 As shown, considering the anti-drifting problem after on-track alignment, a spring clip 10 and a protective shell 11 are designed outside the large positioning pin hole 8;

[0049] The clamping spring 10 is used to clamp the large positioning pin 5 , and the protective shell 11 is used to protect the clamping spring 10 .

[0050] The retaining spring is made of beryllium bronze and has good elastic deformation ability. The large positioning pin is inserted into the positioning pin hole to deform the retaining spring. The elastic force generated by the deformation of the retaining spring can better clamp the positioning pin and play an on-track anti-drifting role.

[0051] The on-orbit installation assembly is positioned and installed by the cooperation of two positioning pins and guide holes. A spring 10 is installed outside the large positioning pin hole, which can clamp the inserted large positioning pin to prevent drifting. At the same time, the small positioning pin 6 cooperates with the small positioning pin hole 9 to prevent rotation. After the on-orbit installation assembly completes the alignment and anti-drifting operations, the astronaut screws the non-slip fastening device 12 into the threaded hole 7 to complete the on-orbit fixation of the protective device.

[0052] like Figure 7 , Figure 8 As shown, the protective cover is made of elastically deformable material and is connected to the device base through an installation notch. When in use, the protective cover is removed, transported out of the cabin, and transported and installed outside the cabin.

[0053] As shown in Figure 4(a) and Figure 4(b), the cable passage protection device operated by astronauts outside the cabin is transferred and installed by grasping the handle when the astronauts perform the track alignment installation operation. The handle has a cross-sectional size of 30mm*17mm and adopts an I-shaped design. The handle is 379mm long and the width distance to the device is 86mm, which meets the astronauts' grasping and alignment related operation requirements.

[0054] like Fig.10 As shown, for the protection operation related to the disconnection of the power channel outside the sealed cabin of the manned aircraft, in the embodiment of the present invention, the solar wing power supply circuit performs power convergence inside the regulator, and the converged power cable is inserted into the protection device to achieve positive and negative short-circuit protection of the power path outside the cabin. After the power path is disconnected, the device provides safety protection for the extravehicular operation of the on-orbit equipment and the operation of the astronauts, and solves the safety problem of the power channel being charged during extravehicular operation.

[0055] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A cable path protection device suitable for astronauts' extravehicular operations, characterized in that: It includes an on-track mounting assembly, a device base, and a short-circuit path assembly; wherein, An on-orbit installation assembly is used to install the device base at the cabin position; The short-circuit path assembly is installed on the base of the device and is used to short-circuit the power output cable.

2. A cable path protection device suitable for astronauts' extravehicular operations according to claim 1, characterized in that: The short-circuit path assembly comprises an electrical connector, a busbar, an upper insulating plate, a lower insulating plate and a conductor; The electrical connector is installed outside the device base, and the busbar is installed inside the device base through an upper insulating plate and a lower insulating plate, and is insulated from the base. The nodes on the electrical connector are connected one by one with the copper sheets on the busbar through wires.

3. A cable path protection device suitable for astronauts' extravehicular operations according to claim 2, characterized in that: The electrical connector forms a certain angle with the device base, and the installation angle is designed according to the on-track needs.

4. A cable path protection device suitable for astronauts' extravehicular operations according to claim 1, characterized in that: It also comprises a wire binding rack, on which the cables are bound and fixed, and the wire binding rack and the device base (1) are integrally formed.

5. The cable path protection device suitable for astronauts' extravehicular operations according to claim 1, characterized in that: There are two on-track mounting components, which are located on both sides of the device base.

6. A cable path protection device suitable for astronauts' extravehicular operations according to claim 1, characterized in that: The on-track installation assembly comprises a large positioning pin (5), a small positioning pin (6), a threaded hole (7), a large positioning pin hole (8), a small positioning pin hole (9), and a non-slip fastening device (12); The large positioning pin (5) and the small positioning pin (6) are located on the cabin body; the large positioning pin hole (8) and the small positioning pin hole (9) are located on the device base (1); the large positioning pin (5) cooperates with the large positioning pin hole (8), and the small positioning pin (6) cooperates with the small positioning pin hole (9) to achieve installation positioning, and the fastening device (12) is screwed into the threaded hole (7) without coming out to complete the on-track fixing of the protection device.

7. A cable path protection device suitable for astronauts' extravehicular operations according to claim 6, characterized in that: The large positioning pin hole (8) is designed with a retaining ring (10) and a protective shell (11); The clamping spring (10) is used for clamping the large positioning pin, and the protective shell (11) is used for protecting the clamping spring.

8. The cable path protection device suitable for astronauts' extravehicular operations according to claim 1, characterized in that: The clip spring is made of beryllium copper.

9. The cable path protection device suitable for astronauts' extravehicular operations according to claim 1, characterized in that: It also includes a protective cover (2), which is made of elastically deformable material and is connected to the device base through an installation notch. When in use, the protective cover is removed, transported out of the cabin, and transported and installed outside the cabin.

10. A cable path protection device suitable for astronauts' extravehicular operations according to claim 1, characterized in that: It also includes a handle, which astronauts use to transfer and align the device when performing orbital alignment and installation operations.

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