A cable fixing device for a flat satellite and its assembly and working methods

Abstract

The present invention provides a cable fixing device for a flat satellite, as well as its assembly and working methods, belonging to the technical field of overall assembly of space vehicle products. It solves the problem that the cables cannot be fixed after the flat satellite is assembled into the cabin. The cable fixing device includes a traction fixing base, a magnetic absorption fixing lower seat, a magnetic absorption fixing upper seat, a wire reel, and a fixing clip. A first rotating shaft is provided on the traction fixing base. The traction fixing base is connected to the bottom plate of the flat satellite. The traction fixing base is connected to the cable. The end of the cable is connected to the top plate of the flat satellite through the fixing clip. The magnetic absorption fixing lower seat and the magnetic absorption fixing upper seat are arranged in pairs and attract each other. The number of the magnetic absorption fixing lower seats and the magnetic absorption fixing upper seats is several. Several magnetic absorption fixing lower seats are connected to the bottom plate of the flat satellite, and several magnetic absorption fixing upper seats are connected to the cable. It is mainly used for fixing the cables after the flat satellite is assembled into the cabin.

Description

Technical Field

[0001] The present invention belongs to the technical field of the general assembly of space vehicle products, and particularly relates to a cable fixing device for a flat satellite, and an assembly and working method thereof. Background Art

[0002] Each device on the satellite needs to be interconnected through cables to achieve power supply or signal transmission. The cables need to be routed and fixed reasonably in the satellite cabin, so as to play the following roles: First, prevent the cables from shaking under the launch state, so as to avoid damaging the devices or themselves; Second, protect the electrical connectors at the cable ends and reduce the load at the roots of the electrical connectors.

[0003] Since the satellite is often a closed cabin, when the last cabin panel of the satellite is closed, due to the need to insert the electrical connectors of the devices on the inner surface of the cabin panel, a certain length margin needs to be reserved for the relevant cables. After the electrical connectors are inserted first, the cabin is then closed. The defect of this operation is that the part of the cable with the reserved length margin is in a free state after the cabin is closed, so there is a risk of shaking in the cabin, causing damage to the cables or devices. The currently commonly used solution is to open an operation hole on the surface of the cabin panel. After the satellite cabin is closed first, then reach into the satellite interior through the through-cabin hole to complete the insertion of the electrical connectors and the fixing of the cables. However, the operation hole will reduce the utilization rate of the cabin panel and increase the difficulty of the thermal control design at the same time.

[0004] For flat satellites, this problem is more severe. The reasons are as follows: First, the equipment layout space of the two-dimensional flat satellite is concentrated on the upper and lower cabin panels. Compared with traditional satellites, there are more and thicker cables that need to be interconnected across the cabin during cabin closure, so the risk of damage is greater; Second, flat satellites often use the method of hoisting the top plate to complete cabin closure. The cabin closure is more difficult and the insertion and fixing of the cables are more difficult, so more cable length margins need to be reserved to ensure operation safety; Third, it is very difficult to have enough space for opening operation holes on the two cabin panels under the premise of meeting the requirements of load, solar wings and platform equipment layout. Summary of the Invention

[0005] In view of this, the present invention aims to provide a cable fixing device for a flat satellite, and an assembly and working method thereof, so as to solve the problem that the cables cannot be fixed after the flat satellite cabin is closed.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A cable fixing device for a flat satellite, which includes a traction fixing seat, a magnetic absorption fixing lower seat, a magnetic absorption fixing upper seat, a wire reel, and a fixing clip. A first rotating shaft is provided on the traction fixing seat. The traction fixing seat is connected to the bottom plate of the flat satellite. The traction fixing seat is connected to the cable. The end of the cable is connected to the top plate of the flat satellite through the fixing clip. The magnetic absorption fixing lower seat and the magnetic absorption fixing upper seat are arranged in pairs and attract each other. The number of the magnetic absorption fixing lower seats and the magnetic absorption fixing upper seats is several. Several magnetic absorption fixing lower seats are connected to the bottom plate of the flat satellite, and several magnetic absorption fixing upper seats are connected to the cable. A lower wire passing hole is provided on the magnetic absorption fixing lower seat. Upper wire passing holes are provided on the upper part of the magnetic absorption fixing lower seat and the lower part of the magnetic absorption fixing upper seat. After the magnetic absorption fixing lower seat and the magnetic absorption fixing upper seat attract each other, the positions of the upper wire passing holes on the magnetic absorption fixing lower seat and the magnetic absorption fixing upper seat are opposite. The wire reel includes a wire winding wheel, a wire winding support, a scroll spring, and a second rotating shaft. The wire winding support is connected to the bottom plate of the flat satellite. The wire winding wheel and the second rotating shaft are both connected to the wire winding support. Scroll springs are provided at both ends of the wire winding wheel. A scroll spring housing is provided outside the scroll spring. The scroll spring housing is connected to the wire winding support. One end of the scroll spring is connected to the wire winding wheel, and the other end is connected to the scroll spring housing. A traction wire is connected to the wire winding wheel. The traction wire sequentially passes through the lower wire passing holes of all the magnetic absorption fixing lower seats, then bypasses the first rotating shaft, and then sequentially passes through the upper wire passing holes of the magnetic absorption fixing lower seats and the magnetic absorption fixing upper seats. Finally, the end of the traction wire is fixed to the second rotating shaft.

[0007] Furthermore, both the traction fixing seat and the fixing clip include a cable fixing surface, a mounting support, and a support column. The cable fixing surface is connected to the mounting support through four support columns. The cable fixing surface is connected to the cable. A rotating shaft hole is provided on the support column of the traction fixing seat. The first rotating shaft passes through the rotating shaft hole and is connected to a nut. The mounting support of the traction fixing seat is connected to the bottom plate of the flat satellite. The mounting support of the fixing clip is connected to the top plate of the flat satellite.

[0008] Furthermore, the magnetic absorption fixing lower seat includes a lower armature, a permanent magnet, a lower outer shell, and a lower bottom plate. Magnetic absorption concave blocks are provided at both ends of the lower armature. A permanent magnet groove is provided on the lower armature. A permanent magnet is provided in the permanent magnet groove. A permanent magnet spacer is provided outside the permanent magnet. The lower armature is sleeved in the lower outer shell. The lower outer shell is connected to the lower bottom plate. The lower bottom plate is connected to the bottom plate of the flat satellite. The lower wire passing hole penetrates through the lower armature and the lower outer shell. Upper wire passing holes are provided at both ends of the upper part of the lower outer shell.

[0009] Further, the magnetic adsorption fixing upper seat includes an upper armature, an upper housing and an upper bottom plate. Magnetic adsorption bumps are arranged at both ends of the upper armature, and upper wire passing holes are formed in the magnetic adsorption bumps. Both the upper armature and the upper bottom plate are sleeved in the upper housing, the upper housing is connected to the upper bottom plate, nylon tie strap grooves are formed in both the upper housing and the upper bottom plate, nylon tie straps pass through the nylon tie strap grooves, and the magnetic adsorption fixing upper seat is connected to a cable through the nylon tie straps.

[0010] Further, the magnet is made of neodymium iron boron, the lower armature and the upper armature are made of electromagnetic pure iron, the magnet pad block is made of silicone rubber, and the lower housing, the lower bottom plate, the upper housing and the upper bottom plate are made of aluminum alloy.

[0011] Further, the wire winding wheel includes a wheel body and a shaft body. The shaft body is arranged at both ends of the wheel body, a scroll spring groove is formed in the shaft body, a scroll spring buckle is arranged at the bottom of the housing of the scroll spring housing, the scroll spring is provided with an inner fixing arm and an outer fixing arm, the inner fixing arm is embedded in the scroll spring groove, and the outer fixing arm is embedded in the scroll spring buckle.

[0012] Further, the wire winding support includes mounting lugs and a wheel mounting surface. The mounting lugs are perpendicular to the wheel mounting surface. The mounting lugs are connected to the bottom plate of the flat satellite. Wheel through holes are formed in both the wheel mounting surface and the housing of the scroll spring housing. The shaft body passes through the wheel through holes. A rotating shaft through hole is formed in the wheel mounting surface. The second rotating shaft passes through the rotating shaft through hole. Mounting threaded holes are formed in the wheel mounting surface. Mounting through holes are formed in the housing of the scroll spring housing. The scroll spring housing is connected to the wheel mounting surface through the cooperation of the mounting through holes, the mounting threaded holes and screws.

[0013] Further, a wire passing hole is formed in the wheel body. The traction wire passes through the wire passing hole and one end thereof is provided with a nail head. The scroll spring housing is made of aluminum alloy. The scroll spring is made of spring steel. The traction wire is a Kevlar rope. Molybdenum disulfide is coated on the surfaces of both the shaft body and the wheel through holes.

[0014] The present invention also provides an assembly method for a cable fixing device for a flat satellite, which includes the following steps:

[0015] Step 1: Install the equipment inside the flat satellite cabin in advance, complete the installation and fixation of the bottom plate and the frame of the flat satellite, and complete the insertion of the cables involved in the cabin closure and the electrical connectors of the corresponding equipment on the bottom plate.

[0016] Step 2: Install the traction fixing seat and several magnetic adsorption fixing lower seats on the surface of the bottom plate according to the wire outlet positions, diameters and wire routing requirements of the cables involved in the flat satellite cabin closure.

[0017] Step 3: Use nylon cable ties to fix the cable on the surface of the traction fixing seat. According to the spacing of several magnetic fixing lower seats, use nylon cable ties to fix the same number of magnetic fixing upper seats on the surface of the cable.

[0018] Step 4: Install two wire take-up brackets on both sides of the wire take-up wheel, install the two wire take-up brackets on the surface of the bottom plate, and install the second rotating shaft on the wire take-up bracket.

[0019] Step 5: Connect one end of the traction wire to the wire take-up wheel, then pass the other end of the traction wire through the lower wire-passing holes of all magnetic fixing lower seats in sequence, then bypass the first rotating shaft, and then pass through the upper wire-passing holes of the magnetic fixing lower seats and magnetic fixing upper seats in sequence. Finally, fix the end of the traction wire on the second rotating shaft.

[0020] Step 6: Hoist the top plate above the frame of the flat satellite, reserve an operating space, use fixing clips to fix the cable on the surface of the top plate, and insert the end of the cable into the electrical connector of the corresponding equipment on the top plate.

[0021] Step 7: Connect one end of the scroll spring to the wire take-up wheel and the other end to the scroll spring housing. Rotate the scroll spring housing to wind the scroll spring inward, and then use screws to connect the scroll spring housing to the wire take-up bracket. The scroll spring completes the storage of elastic potential energy.

[0022] The present invention also provides a working method for the cable fixing device for a flat satellite, specifically: lower the top plate downward to close it with the frame by hoisting. The cable falls under the action of its own gravity, and the elastic potential energy of the scroll spring is released, driving the wire take-up wheel to rotate and wind up the traction wire. Under the action of the traction wire, each magnetic fixing upper seat gradually approaches the corresponding magnetic fixing lower seat until the magnetic fixing upper seat and the magnetic fixing lower seat are attracted and locked, and the cable with reserved margin is fixed after the cabin is closed.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] (1) The present invention provides a cable fixing device for a flat satellite and its assembly and working method, which can realize the fixing of the cable after the satellite cabin is closed without increasing the through-cabin operation holes, thereby avoiding the risk of cable or equipment damage.

[0025] (2) When the bottom plate is hoisted and the cabin is closed, the present invention can be locked under the guiding action of traction, without additional operations during the cabin closing process, reducing the operation difficulty.

[0026] (3) The present invention only plays a guiding role during the wire take-up process, and the fixation is achieved by the attraction between the magnetic fixing lower seat and the magnetic fixing upper seat. Therefore, each component will not bear too much stress. While realizing the lightweight design of the whole set of devices, the reliability is still not affected.

[0027] (4) After the magnetic - absorption fixed lower seat and the magnetic - absorption fixed upper seat of the present invention are magnetically attracted and combined, the magnetically attracted parts of the magnetic - convex blocks and the magnetic - concave blocks are in a tightly - attached state. The lower armature and the upper armature form a closed magnetic circuit. Under the synergistic magnetic - shielding effect of the aluminum - alloy shell, the magnetic leakage is extremely small and will not affect the normal operation of the satellite magnetic equipment.

[0028] (5) The design of the present invention is flexible. According to the outlet position, diameter, and routing requirements of the cables involved in the flat - panel satellite cabin, the number, installation route, spacing, etc. of the magnetic - absorption fixed upper seat and the magnetic - absorption fixed lower seat can be changed, so as to adapt to the fixing requirements in different situations.

[0029] (6) The present invention has a simple composition, small volume, and light weight. It will not cause excessive layout burden and weight burden on the satellite. The precision requirements for each component are relatively low, which can reduce the processing cost, shorten the processing cycle, and the cost is relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0031] Figure 1 is a schematic structural diagram of a cable fixing device for a flat - panel satellite according to the present invention;

[0032] Figure 2 is a schematic structural diagram of the traction fixing seat according to the present invention;

[0033] Figure 3 is a schematic structural diagram of the magnetic - absorption fixed lower seat according to the present invention;

[0034] Figure 4 is a schematic cross - sectional structural diagram of the magnetic - absorption fixed lower seat according to the present invention;

[0035] Figure 5 is a schematic structural diagram of the magnetic - absorption fixed upper seat according to the present invention;

[0036] Figure 6 is a schematic cross - sectional structural diagram of the magnetic - absorption fixed upper seat according to the present invention;

[0037] Figure 7 is a schematic diagram of the magnetic - absorption combined structure of the magnetic - absorption fixed upper seat and the magnetic - absorption fixed lower seat according to the present invention;

[0038] Figure 8 is a schematic structural diagram of the wire - winding device according to the present invention;

[0039] Figure 9 is a schematic cross - sectional structural diagram of the wire - winding device according to the present invention;

[0040] Figure 10Schematic diagram of the take-up reel structure according to the present invention;

[0041] Figure 11 Schematic diagram of the take-up bracket structure according to the present invention;

[0042] Figure 12 Schematic diagram of the volute spring housing structure according to the present invention;

[0043] Figure 13 Schematic diagram of the volute spring structure according to the present invention;

[0044] Figure 14 Schematic diagram of the process of the assembly method of a cable fixing device for a flat satellite according to the present invention Figure 1 ;

[0045] Figure 15 Schematic diagram of the process of the assembly method of a cable fixing device for a flat satellite according to the present invention Figure 2 ;

[0046] Figure 16 Schematic diagram of the process of the assembly method of a cable fixing device for a flat satellite according to the present invention Figure 3 ;

[0047] Figure 17 Schematic diagram of the process of the assembly method of a cable fixing device for a flat satellite according to the present invention Figure 4 ;

[0048] Figure 18 Schematic diagram of the process of the assembly method of a cable fixing device for a flat satellite according to the present invention Figure 5 ;

[0049] Figure 19 Schematic diagram of the process of the assembly method of a cable fixing device for a flat satellite according to the present invention Figure 6 ;

[0050] Figure 20 Schematic diagram of the completed assembly of a cable fixing device for a flat satellite according to the present invention;

[0051] Figure 21 Schematic diagram of the working method of a cable fixing device for a flat satellite according to the present invention Figure 1 ;

[0052] Figure 22 Schematic diagram of the working method of a cable fixing device for a flat satellite according to the present invention Figure 2 ;

[0053] Figure 23 Schematic diagram of the working method of a cable fixing device for a flat satellite according to the present invention Figure 3 .

[0054] In the figure:

[0055] 1 - Traction fixing seat, 2 - Magnetic adsorption fixing lower seat, 3 - Magnetic adsorption fixing upper seat, 4 - Wire reel, 5 - Fixing clip, 6 - First rotating shaft, 7 - Cable fixing surface, 8 - Mounting support, 9 - Support column, 10 - Rotating shaft hole, 11 - Lower armature, 12 - Magnet, 13 - Magnet pad, 14 - Lower outer shell, 15 - Lower bottom plate, 16 - Magnet groove, 17 - Magnetic adsorption concave block, 18 - Lower wire passing hole, 19 - Upper wire passing hole, 20 - Upper armature, 21 - Upper outer shell, 22 - Upper bottom plate, 23 - Magnetic adsorption convex block, 24 - Nylon tie strap groove, 25 - Wire reel, 26 - Wire reel support, 27 - Volute spring housing, 28 - Volute spring, 29 - Traction wire, 30 - Wheel body, 31 - Wire passing hole, 32 - Shaft body, 33 - Volute spring groove, 34 - Mounting lug, 35 - Wheel mounting surface, 36 - Wheel through hole, 37 - Rotating shaft through hole, 38 - Mounting threaded hole, 39 - Mounting through hole, 40 - Housing, 41 - Volute spring buckle, 42 - Inner fixing arm, 43 - Outer fixing arm, 44 - Cable, 45 - Second rotating shaft, 46 - Bottom plate, 47 - Frame, 48 - Top plate. Specific embodiments

[0056] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0057] See Figure 1-13Description of this embodiment: A cable fixing device for a flat satellite, which includes a traction fixing base 1, a magnetic absorption fixing lower seat 2, a magnetic absorption fixing upper seat 3, a wire reel 4 and a fixing clip 5. A first rotating shaft 6 is provided on the traction fixing base 1. The traction fixing base 1 is connected to the bottom plate 46 of the flat satellite. The traction fixing base 1 is connected to the cable 44. The end of the cable 44 is connected to the top plate 48 of the flat satellite through the fixing clip 5. The magnetic absorption fixing lower seat 2 and the magnetic absorption fixing upper seat 3 are arranged in pairs and attract each other. The number of the magnetic absorption fixing lower seats 2 and the magnetic absorption fixing upper seats 3 is several. Several magnetic absorption fixing lower seats 2 are connected to the bottom plate 46 of the flat satellite. Several magnetic absorption fixing upper seats 3 are connected to the cable 44. A lower wire passing hole 18 is provided on the magnetic absorption fixing lower seat 2. Upper wire passing holes 19 are provided on the upper part of the magnetic absorption fixing lower seat 2 and the lower part of the magnetic absorption fixing upper seat 3. After the magnetic absorption fixing lower seat 2 and the magnetic absorption fixing upper seat 3 attract each other, the positions of the upper wire passing holes 19 on the magnetic absorption fixing lower seat 2 and the magnetic absorption fixing upper seat 3 are opposite. The wire reel 4 includes a wire reel 25, a wire reel support 26, a spiral spring 28 and a second rotating shaft 45. The wire reel support 26 is connected to the bottom plate 46 of the flat satellite. The wire reel 25 and the second rotating shaft 45 are both connected to the wire reel support 26. Spiral springs 28 are provided at both ends of the wire reel 25. A spiral spring housing 27 is provided on the outside of the spiral spring 28. The spiral spring housing 27 is connected to the wire reel support 26. One end of the spiral spring 28 is connected to the wire reel 25, and the other end is connected to the spiral spring housing 27. A traction wire 29 is connected to the wire reel 25. The traction wire 29 sequentially passes through the lower wire passing holes 18 of all the magnetic absorption fixing lower seats 2, then bypasses the first rotating shaft 6, and then sequentially passes through the upper wire passing holes 19 of the magnetic absorption fixing lower seats 2 and the magnetic absorption fixing upper seats 3. Finally, the end of the traction wire 29 is fixed to the second rotating shaft 45.

[0058] As Figure 2 shown, the basic structures of the traction fixing base 1 and the fixing clip 5 are the same, and both include a cable fixing surface 7, a mounting support 8 and a support column 9. The cable fixing surface 7 is connected to the mounting support 8 through four support columns 9. The cable fixing surface 7 is connected to the cable 44. After the cable fixing surface 7, the mounting support 8 and the support column 9 are connected, the fixing clip 5 is formed. The traction fixing base 1 is additionally provided with a rotating shaft hole 10 on the support column 9 on the basis of the fixing clip 5. The first rotating shaft 6 passes through the rotating shaft hole 10 and is connected to a nut. The mounting support 8 of the traction fixing base 1 is connected to the bottom plate 46 of the flat satellite. The mounting support 8 of the fixing clip 5 is connected to the top plate 48 of the flat satellite.

[0059] As Figure 3 and Figure 4As shown, the magnetic absorption fixing lower seat 2 includes a lower armature 11, a magnet 12, a lower outer shell 14 and a lower bottom plate 15. Magnetic absorption concave blocks 17 are arranged at both ends of the lower armature 11. A magnet groove 16 is formed on the lower armature 11. The magnet 12 is arranged in the magnet groove 16. A magnet spacer 13 is arranged outside the magnet 12. The lower armature 11 is sleeved in the lower outer shell 14. The lower outer shell 14 is connected to the lower bottom plate 15. The lower bottom plate 15 is connected to the bottom plate 46 of the flat satellite. The lower wire passing hole 18 penetrates through the lower armature 11 and the lower outer shell 14. Upper wire passing holes 19 are formed at both ends of the upper part of the lower outer shell 14.

[0060] The installation method of the magnetic absorption fixing lower seat 2 is as follows: the magnet 12 is stuffed into the magnet groove 16, and then the magnet spacer 13 is placed outside the magnet 12 for pressing. Finally, the lower outer shell 14 and the lower bottom plate 15 are buckled to complete the installation of the magnetic absorption fixing lower seat 2. Glue is applied to the contacting parts of the lower armature 11, the lower outer shell 14 and the lower bottom plate 15 for fixation. After fixation, the lower wire passing hole 18 of the lower armature 11 coincides with that of the lower outer shell 14.

[0061] As Figure 5 and Figure 6 As shown, the magnetic absorption fixing upper seat 3 includes an upper armature 20, an upper outer shell 21 and an upper bottom plate 22. Magnetic absorption convex blocks 23 are arranged at both ends of the upper armature 20. Upper wire passing holes 19 are formed in the magnetic absorption convex blocks 23. Both the upper armature 20 and the upper bottom plate 22 are sleeved in the upper outer shell 21. The upper outer shell 21 is connected to the upper bottom plate 22. Nylon tie slots 24 are formed on both the upper outer shell 21 and the upper bottom plate 22. Nylon ties pass through the nylon tie slots 24. The magnetic absorption fixing upper seat 3 is connected to the cable 44 through nylon ties.

[0062] The installation method of the magnetic absorption fixing upper seat 3 is as follows: the upper outer shell 21 and the upper bottom plate 22 are buckled to cover the upper armature 20. Glue is applied to the contacting parts of the upper armature 20, the upper outer shell 21 and the upper bottom plate 22 for fixation. After fixation, the nylon tie slots 24 of the upper outer shell 21 coincide with those of the upper bottom plate 22.

[0063] The magnet 12 is preferably made of neodymium iron boron material. This magnet material has a large magnetic energy product, which can realize the miniaturized design of the magnetic absorption fixing lower seat 2. This magnet material has a wide range of allowable temperature limits, which can avoid demagnetization of the magnet caused by the high and low temperature environment in space. The materials of the lower armature 11 and the upper armature 20 are preferably electromagnetic pure iron. The material of the magnet spacer 13 is preferably high tear-resistant silicone rubber. The lower outer shell 14, the lower bottom plate 15, the upper outer shell 21 and the upper bottom plate 22 are preferably made of aluminum alloy material, which can be formed by stamping sheet metal to reduce the processing cost.

[0064] When the upper magnetic attraction fixing seat 3 approaches the lower magnetic attraction fixing seat 2, under the action of the magnet 12, the magnetic attraction bump 23 is attracted and combined with the magnetic attraction concave block 17. The magnetic attraction bump 23 and the magnetic attraction concave block 17 are designed with a structural cooperation. The inclined surface plays a guiding role during the attraction process. After the attraction is completed, the attracted part of the magnetic attraction bump 23 and the magnetic attraction concave block 17 is in a tightly fitting state, and the lower armature 11 and the upper armature 20 form a closed magnetic circuit. As Figure 7 shown, under the cooperative magnetic shielding effect of the aluminum alloy shell, the magnetic leakage is extremely small and will not affect the normal operation of the satellite magnetic device.

[0065] As Figures 8-13 shown, the wire take-up wheel 25 includes a wheel body 30 and a shaft body 32. The shaft body 32 is arranged at both ends of the wheel body 30. A scroll spring groove 33 is formed on the shaft body 32. A scroll spring buckle 41 is arranged at the bottom of the shell 40 of the scroll spring housing 27. The scroll spring 28 is provided with an inner fixing arm 42 and an outer fixing arm 43. The inner fixing arm 42 is embedded in the scroll spring groove 33, and the outer fixing arm 43 is embedded in the scroll spring buckle 41. A wire passing hole 31 is formed on the wheel body 30 for the passing and fixing of the traction wire 29. The traction wire 29 passes through the wire passing hole 31 and one end is provided with a nail head.

[0066] The wire take-up bracket 26 includes mounting lugs 34 and a wheel mounting surface 35. The mounting lugs 34 are perpendicular to the wheel mounting surface 35. The mounting lugs 34 are connected to the bottom plate 46 of the flat satellite. Wheel through holes 36 are arranged on both the wheel mounting surface 35 and the shell 40 of the scroll spring housing 27. The shaft body 32 passes through the wheel through holes 36. A rotating shaft through hole 37 is formed on the wheel mounting surface 35. The second rotating shaft 45 passes through the rotating shaft through hole 37. A mounting threaded hole 38 is formed on the wheel mounting surface 35. A mounting through hole 39 is arranged on the shell 40 of the scroll spring housing 27. The scroll spring housing 27 is connected to the wheel mounting surface 35 through the cooperation of the mounting through hole 39, the mounting threaded hole 38 and a screw. The wire take-up device 4 is carried out synchronously during the assembly process of the cable fixing device and is not installed separately.

[0067] The scroll spring housing 27 is preferably made of aluminum alloy and can be formed by stamping sheet metal to reduce the processing cost. The material of the scroll spring 28 is preferably spring steel, which is wound and then heat-treated to ensure its elasticity. The traction wire 29 is preferably a Kevlar rope to avoid damage and breakage. Molybdenum disulfide is applied to the surfaces of the shaft body 32 and the wheel through holes 36 to achieve a lubricating effect and prevent vacuum cold welding.

[0068] Refer to Figures 14-20 To illustrate this embodiment, this embodiment is an assembly method for a cable fixing device for a flat satellite, which includes the following steps:

[0069] Step 1: Pre-install the equipment inside the flat satellite cabin in advance, complete the installation and fixation of the bottom plate 46 and the frame 47 of the flat satellite, and complete the mating of the cable 44 involved in the cabin closure with the electrical connectors of the corresponding equipment on the bottom plate 46;

[0070] Step 2: As Figure 14 shown, install the traction fixing seat 1 and several magnetic fixing lower seats 2 on the surface of the bottom plate 46 according to the outlet position, diameter and routing requirements of the cable 44 involved in the cabin closure of the flat satellite;

[0071] Step 3: As Figure 15 shown, fix the cable 44 on the surface of the traction fixing seat 1 using nylon cable ties. According to the spacing of several magnetic fixing lower seats 2, fix the same number of magnetic fixing upper seats 3 on the surface of the cable 44 using nylon cable ties;

[0072] Step 4: As Figure 16 shown, install two wire-receiving brackets 26 on both sides of the wire-receiving wheel 25, and then install the two wire-receiving brackets 26 of the assembly on the surface of the bottom plate 46. The assembly is close to the last magnetic fixing lower seat 2. Install the second rotating shaft 45 on the wire-receiving bracket 26 and connect it with a nut;

[0073] Step 5: As Figure 17 shown, pass the traction wire 29 with a nail head through the wire-passing hole 31 of the wire-receiving wheel 25, connect one end of the traction wire 29 to the wire-receiving wheel 25, then pass the other end of the traction wire 29 through the lower wire-passing holes 18 of all the magnetic fixing lower seats 2 in sequence, then bypass the first rotating shaft 6, then pass through an upper wire-passing hole 19 on the magnetic fixing lower seat 2, then pass through the two upper wire-passing holes 19 on the magnetic fixing upper seat 3 in sequence, then pass through the other upper wire-passing hole 19 on the magnetic fixing lower seat 2, and so on through all the upper wire-passing holes 19 of the magnetic fixing lower seats 2 and the magnetic fixing upper seats 3. Finally, fix the end of the traction wire 29 on the second rotating shaft 45. The wire-passing path is as shown by the arrow in Figure 17 ;

[0074] Step 6: As Figure 18 shown, use a crane to hoist the top plate 48 directly above the frame 47 of the flat satellite, reserve an operating space, fix the cable 44 on the surface of the top plate 48 using a fixing clip 5, and mate the end of the cable 44 with the electrical connector of the corresponding equipment on the top plate 48;

[0075] Step 7: As Figure 19As shown, the inner fixing arm 42 of the vortex spring 28 is inserted into the vortex spring groove 33, so that one end of the vortex spring 28 is connected to the take-up wheel 25, and then the outer fixing arm 43 is inserted into the vortex spring buckle 41 of the vortex spring housing 27, so that the other end of the vortex spring 28 is connected to the vortex spring housing 27, and the vortex spring housing 27 is rotated to make the vortex spring 28 roll inward, and then the vortex spring housing 27 is connected to the take-up bracket 26 with screws, and the vortex spring 28 completes the storage of elastic potential energy. The cable fixing device after installation is as shown in FIG. Figure 20 shown.

[0076] See also Figures 21-23 The present embodiment is described as a method for using a cable fixing device for a flat-panel satellite. Specifically, the top plate 48 is hoisted downward and closed with the frame 47, the cable 44 falls under the action of its own gravity, the elastic potential energy of the vortex spring 28 is released, and the take-up wheel 25 is driven to rotate and take up the traction line 29. The traction route is as follows: Figure 21 As shown. Under the action of the traction line 29, each magnetic fixed upper seat 3 gradually approaches the corresponding magnetic fixed lower seat 2. Both the magnetic fixed upper seat 3 and the magnetic fixed lower seat 2 have upper threading holes 19. Therefore, under the action of the traction line 29, the two can accurately approach each other and be tightly attracted under the guidance of the magnetic protrusion 23 and the magnetic concave block 17, as shown. Figure 22 As shown, until the magnetically fixed upper seat 3 and the magnetically fixed lower seat 2 are attracted and locked, the reserved cable 44 completes the fixation after the cabin is closed, which can avoid the risk of damage caused by shaking, such as Figure 23 shown.

[0077] When in use, the wire take-up device 4 only guides the approach of the magnetic fixed upper seat 3 and the magnetic fixed lower seat 2. The downward movement of the magnetic fixed upper seat 3 mainly relies on the gravity of the cable 44. Therefore, the vortex spring 28 does not need too much elasticity, and the various components of the wire take-up device do not need to bear too much stress.

[0078] The specific embodiments of the present invention disclosed above are only used to help explain the present invention. The specific embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well.

Claims

1. A cable fixing device for a flat satellite, characterized in that: It includes a traction fixing base (1), a magnetic attraction fixing lower seat (2), a magnetic attraction fixing upper seat (3), a wire reel (4) and a fixing clip (5). A first rotating shaft (6) is arranged on the traction fixing base (1). The traction fixing base (1) is connected to the bottom plate (46) of the flat satellite. The traction fixing base (1) is connected to a cable (44). The end of the cable (44) is connected to the top plate (48) of the flat satellite through the fixing clip (5). The magnetic attraction fixing lower seat (2) and the magnetic attraction fixing upper seat (3) are arranged in pairs and attract each other. The number of the magnetic attraction fixing lower seats (2) and the magnetic attraction fixing upper seats (3) is several. Several magnetic attraction fixing lower seats (2) are connected to the bottom plate (46) of the flat satellite. Several magnetic attraction fixing upper seats (3) are connected to the cable (44). A lower wire passing hole (18) is arranged on the magnetic attraction fixing lower seat (2). Upper wire passing holes (19) are arranged on the upper part of the magnetic attraction fixing lower seat (2) and the lower part of the magnetic attraction fixing upper seat (3). After the magnetic attraction fixing lower seat (2) and the magnetic attraction fixing upper seat (3) attract each other, the positions of the upper wire passing holes (19) on the magnetic attraction fixing lower seat (2) and the magnetic attraction fixing upper seat (3) are opposite. The wire reel (4) includes a wire reel (25), a wire reel support (26), a scroll spring (28) and a second rotating shaft (45). The wire reel support (26) is connected to the bottom plate (46) of the flat satellite. The wire reel (25) and the second rotating shaft (45) are both connected to the wire reel support (26). Scroll springs (28) are arranged at both ends of the wire reel (25). A scroll spring housing (27) is arranged outside the scroll spring (28). The scroll spring housing (27) is connected to the wire reel support (26). One end of the scroll spring (28) is connected to the wire reel (25), and the other end is connected to the scroll spring housing (27). A traction wire (29) is connected to the wire reel (25). The traction wire (29) sequentially passes through the lower wire passing holes (18) of all the magnetic attraction fixing lower seats (2), then bypasses the first rotating shaft (6), and then sequentially passes through the upper wire passing holes (19) of the magnetic attraction fixing lower seats (2) and the magnetic attraction fixing upper seats (3). Finally, the end of the traction wire (29) is fixed to the second rotating shaft (45).

2. The cable fixing device for a flat satellite according to claim 1, characterized in that: Both the traction fixing base (1) and the fixing clip (5) include a cable fixing surface (7), a mounting support (8) and a support column (9). The cable fixing surface (7) is connected to the mounting support (8) through four support columns (9). The cable fixing surface (7) is connected to the cable (44). A rotating shaft hole (10) is formed on the support column (9) of the traction fixing base (1). The first rotating shaft (6) passes through the rotating shaft hole (10) and is connected to a nut. The mounting support (8) of the traction fixing base (1) is connected to the bottom plate (46) of the flat satellite. The mounting support (8) of the fixing clip (5) is connected to the top plate (48) of the flat satellite.

3. The cable fixing device for a flat satellite according to claim 1, characterized in that: The magnetic attraction fixing lower seat (2) includes a lower armature (11), a magnet (12), a lower outer shell (14) and a lower bottom plate (15). Magnetic attraction concave blocks (17) are arranged at both ends of the lower armature (11). A magnet groove (16) is formed in the lower armature (11). A magnet (12) is arranged in the magnet groove (16). A magnet spacer block (13) is arranged outside the magnet (12). The lower armature (11) is sleeved in the lower outer shell (14). The lower outer shell (14) is connected to the lower bottom plate (15). The lower bottom plate (15) is connected to the bottom plate (46) of the flat satellite. The lower wire passing hole (18) penetrates through the lower armature (11) and the lower outer shell (14). Upper wire passing holes (19) are formed at both ends of the upper part of the lower outer shell (14).

4. The cable fixing device for a flat satellite according to claim 3, characterized in that: The magnetic attraction fixing upper seat (3) includes an upper armature (20), an upper outer shell (21) and an upper bottom plate (22). Magnetic attraction convex blocks (23) are arranged at both ends of the upper armature (20). Upper wire passing holes (19) are formed in the magnetic attraction convex blocks (23). Both the upper armature (20) and the upper bottom plate (22) are sleeved in the upper outer shell (21). The upper outer shell (21) is connected to the upper bottom plate (22). Nylon tie slots (24) are formed in both the upper outer shell (21) and the upper bottom plate (22). Nylon ties pass through the nylon tie slots (24). The magnetic attraction fixing upper seat (3) is connected to the cable (44) through a nylon tie.

5. The cable fixing device for a flat satellite according to claim 4, characterized in that: The magnet (12) is made of neodymium iron boron. The lower armature (11) and the upper armature (20) are made of electromagnetic pure iron. The magnet spacer block (13) is made of silicone rubber. The lower outer shell (14), the lower bottom plate (15), the upper outer shell (21) and the upper bottom plate (22) are made of aluminum alloy.

6. A cable fixing device for a flat satellite according to claim 1, characterized in that: The wire take-up wheel (25) includes a wheel body (30) and a shaft body (32). The shaft body (32) is arranged at both ends of the wheel body (30). A volute spring groove (33) is formed in the shaft body (32). A volute spring buckle (41) is arranged at the bottom of the shell (40) of the volute spring shell (27). The volute spring (28) is provided with an inner fixing arm (42) and an outer fixing arm (43). The inner fixing arm (42) is embedded in the volute spring groove (33). The outer fixing arm (43) is embedded in the volute spring buckle (41).

7. The cable fixing device for a flat satellite according to claim 6, wherein: The take-up bracket (26) includes mounting lugs (34) and a wheel mounting surface (35). The mounting lugs (34) are perpendicular to the wheel mounting surface (35). The mounting lugs (34) are connected to the bottom plate (46) of the flat satellite. Wheel through-holes (36) are provided on both the wheel mounting surface (35) and the housing (40) of the scroll spring housing (27). The shaft body (32) passes through the wheel through-holes (36). A rotating shaft through-hole (37) is formed on the wheel mounting surface (35). The second rotating shaft (45) passes through the rotating shaft through-hole (37). Mounting threaded holes (38) are formed on the wheel mounting surface (35). Mounting through-holes (39) are provided on the housing (40) of the scroll spring housing (27). The scroll spring housing (27) is connected to the wheel mounting surface (35) through the cooperation of the mounting through-holes (39), the mounting threaded holes (38) and screws.

8. The cable fixing device for a flat satellite according to claim 7, wherein: A wire threading hole (31) is formed on the wheel body (30). The traction wire (29) passes through the wire threading hole (31) and has a nail head at one end. The scroll spring housing (27) is made of aluminum alloy. The scroll spring (28) is made of spring steel. The traction wire (29) is a Kevlar rope. Molybdenum disulfide is coated on the surfaces of both the shaft body (32) and the wheel through-holes (36).

9. An assembly method of a cable fixing device for a flat satellite as described in claim 1, characterized in that: It includes the following steps: Step 1: Pre-install the equipment inside the flat satellite cabin, complete the installation and fixation of the bottom plate (46) and the frame (47) of the flat satellite, and complete the insertion of the cables (44) involved in the cabin closure into the corresponding equipment electrical connectors on the bottom plate (46). Step 2: Install the traction fixing seat (1) and several magnetic adsorption fixing lower seats (2) on the surface of the bottom plate (46) according to the outlet position, diameter and routing requirements of the cables (44) involved in the flat satellite cabin closure. Step 3: Use nylon cable ties to fix the cables (44) on the surface of the traction fixing seat (1). According to the spacing of the several magnetic adsorption fixing lower seats (2), use nylon cable ties to fix the same number of magnetic adsorption fixing upper seats (3) on the surface of the cables (44). Step 4: Install two take-up brackets (26) on both sides of the take-up wheel (25), install the two take-up brackets (26) on the surface of the bottom plate (46), and install the second rotating shaft (45) on the take-up brackets (26). Step 5: Connect one end of the traction wire (29) to the take-up wheel (25), then pass the other end of the traction wire (29) through the lower wire threading holes (18) of all the magnetic adsorption fixing lower seats (2) in sequence, then bypass the first rotating shaft (6), then pass through the upper wire threading holes (19) of the magnetic adsorption fixing lower seats (2) and the magnetic adsorption fixing upper seats (3) in sequence, and finally fix the end of the traction wire (29) on the second rotating shaft (45). Step 6: Lift the top plate (48) above the frame (47) of the flat satellite, reserve an operation space, use fixing clips (5) to fix the cables (44) on the surface of the top plate (48), and insert the ends of the cables (44) into the corresponding equipment electrical connectors on the top plate (48). Step 7: Connect one end of the spiral spring (28) to the wire reel (25) and the other end to the spiral spring housing (27). Rotate the spiral spring housing (27) to wind the spiral spring (28) inwardly. Then, use screws to connect the spiral spring housing (27) to the wire winding bracket (26), and the spiral spring (28) completes the storage of elastic potential energy.

10. A working method of the cable fixing device for a flat satellite as described in claim 1, characterized in that: Lower the top plate (48) downward to close it with the frame (47) by hoisting. The cable (44) falls under the action of its own gravity. The elastic potential energy of the spiral spring (28) is released, driving the wire reel (25) to rotate and wind up the towing wire (29). Under the action of the towing wire (29), each magnetic attraction fixing upper seat (3) gradually approaches the corresponding magnetic attraction fixing lower seat (2) until the magnetic attraction fixing upper seat (3) is attracted and locked with the magnetic attraction fixing lower seat (2), and the cable (44) with a reserved margin is fixed after the cabin is closed.

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