Gravity offloading system for flexible solar wings

Abstract

The application relates to a gravity unloading system of a flexible solar wing. The gravity unloading system comprises a support, a first guide rail arranged on the support, a plurality of first trolleys slidably arranged on the first guide rail, a driving assembly for driving the plurality of first trolleys to move along the first guide rail, a plurality of balancing assemblies respectively hung on corresponding first trolleys, and the balancing assemblies are used for hanging solar panels of the flexible solar wing, a second guide rail arranged in parallel with the first guide rail, and a plurality of second trolleys slidably arranged on the second guide rail, and the second trolleys are used for hanging three-dimensional rotating mechanisms of the flexible solar wing. The gravity unloading system of the flexible solar wing integrates the functions of solar panel unloading and three-dimensional rotating mechanism unloading, a large amount of space is saved, and the research and development cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of space equipment, in particular to a gravity unloading system of a flexible solar wing. BACKGROUND

[0002] The traditional ground gravity unloading system mainly performs zero gravity unloading on each solar panel of a rigid flexible solar wing, and then adjusts the spring scale reading of the hanging to adjust the size of the unloading force, so as to complete the whole wing assembly, deployment and folding test of the flexible solar wing. The three-dimensional rotating mechanism of the flexible solar wing does not need to be unloaded or needs another set of gravity unloading system to perform zero gravity unloading.

[0003] With the increasingly wide application of large flexible solar wings, the advantages of small space occupation, large deployment area and light weight of the flexible solar wings are increasingly prominent, so the thickness requirement of the flexible solar wings is increasingly thin, and the area requirement is increasingly large. The traditional ground gravity unloading system has been difficult to meet the needs of large flexible solar wings. SUMMARY

[0004] Based on the above problems, the present application provides a gravity unloading system of a flexible solar wing, which simultaneously meets the unloading requirements of the solar panels and the three-dimensional rotating mechanism of the flexible solar wing.

[0005] One embodiment of the present application provides a gravity unloading system of a flexible solar wing, comprising: a support; a first guide rail arranged on the support; a plurality of first trolleys slidably arranged on the first guide rail; a driving assembly for driving the plurality of first trolleys to move along the first guide rail; a plurality of trimming assemblies respectively suspended on corresponding first trolleys, the trimming assemblies being used for hanging solar panels of the flexible solar wing; a second guide rail arranged in parallel with the first guide rail; and a plurality of second trolleys slidably arranged on the second guide rail, the second trolleys being used for hanging three-dimensional rotating mechanisms of the flexible solar wing.

[0006] According to some embodiments of the present application, the trimming assembly comprises: a first trimming block comprising a first suspension part and a first counterweight part, the first suspension part being arranged on one side of the first counterweight part; a first suspension rope, one end of which is connected to the first trolley, and the other end of the first suspension rope being connected to the first suspension part; and a first hanging rope, one end of which is connected to the end of the first suspension part, and the other end of the first hanging rope being used for hanging the solar panel of the flexible solar wing.

[0007] According to some embodiments of the present application, the trimming assembly further comprises: a first counterweight block slidably arranged on the first suspension part; and a second counterweight block slidably arranged on the first counterweight part.

[0008] According to some embodiments of the present application, the at least partial leveling assembly further comprises: a second leveling block comprising a second suspension part and a second counterweight part, the second suspension part being arranged at one side of the second counterweight part; a second suspension rope, one end of which is connected to the first suspension part of the first leveling block, and the other end of which is connected to the second suspension part; and a second hanging rope, one end of which is connected to the end of the second suspension part, and the other end of which is used for hanging the solar panel of the flexible solar wing.

[0009] According to some embodiments of the present application, the at least partial leveling assembly further comprises: a third counterweight block, which is slidably arranged at the second suspension part; and a fourth counterweight block, which is slidably arranged at the second counterweight part.

[0010] According to some embodiments of the present application, the first leveling block and the second leveling block of the at least partial adjacent leveling assembly are arranged in an interleaved manner.

[0011] According to some embodiments of the present application, the second trolley comprises: a sliding block comprising a sliding groove matched with the second guide rail; and a roller rotatably arranged on the sliding block, the sliding block being hung on the second guide rail through the roller.

[0012] According to some embodiments of the present application, the number of rollers is at least three, and the at least three rollers are arranged on both sides of the sliding block, respectively.

[0013] According to some embodiments of the present application, the gravity unloading system of the flexible solar wing further comprises: a mechanism hanging plate connected to the second trolley; and at least two third hanging ropes arranged on both sides of the mechanism hanging plate, respectively, the at least two third hanging ropes being used for hanging the three-dimensional rotating mechanism of the flexible solar wing.

[0014] According to some embodiments of the present application, the gravity unloading system of the flexible solar wing further comprises: an angle sensor arranged on the first trolley closest to the driving assembly, the driving assembly being controlled to work according to the signal of the angle sensor; a third suspension rope, one end of which is connected to the angle sensor; and a sinker, the other end of the third suspension rope being connected to the sinker through the flexible solar wing.

[0015] One embodiment of the present application provides a method for unloading the flexible solar wing by using the gravity unloading system of the flexible solar wing as described above, comprising: determining the corresponding leveling assembly according to the weight of each solar panel of the flexible solar wing; hanging the solar panel on the corresponding leveling assembly; and hanging the three-dimensional rotating mechanism of the flexible solar wing on the second trolley.

[0016] The gravity unloading system of the flexible solar wing of the present application integrates the functions of solar panel unloading and three-dimensional rotating mechanism unloading, saves a large amount of space, and reduces the research and development cost; the leveling assembly is suitable for the unloading of the solar panel in the flexible solar wing, and the order is clear during the unfolding or folding process, and there is no hooking interference phenomenon. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the present application, the drawings required to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings without departing from the scope of the present application.

[0018] Figure 1 FIG. 1 is a schematic diagram of a gravity unloading system of a flexible solar wing according to an embodiment of the present application;

[0019] Figure 2 FIG. 3 is a schematic diagram of a support according to an embodiment of the present application;

[0020] Figure 3 FIG. 4 is a partial view of the gravity unloading system of the flexible solar wing according to an embodiment of the present application;

[0021] Figure 4 FIG. 5 is a first pulley retracted state diagram according to an embodiment of the present application;

[0022] Figure 5 FIG. 6 is a schematic diagram of a driving assembly according to an embodiment of the present application;

[0023] Figure 6 FIG. 7 is a schematic diagram of the gravity unloading system mounting the flexible solar wing according to an embodiment of the present application;

[0024] Figure 7 FIG. 8 is a schematic diagram of a trimming assembly according to an embodiment of the present application Figure 1 ;

[0025] Figure 8 FIG. 9 is a schematic diagram of a first trimming block according to an embodiment of the present application;

[0026] Figure 9 FIG. 10 is a schematic diagram of the trimming assembly according to an embodiment of the present application Figure 2 ;

[0027] Figure 10 FIG. 11 is a schematic diagram of a second trimming block according to an embodiment of the present application;

[0028] Figure 11 FIG. 12 is a schematic diagram of adjacent trimming assemblies staggered according to an embodiment of the present application;

[0029] Figure 12 FIG. 13 is a schematic diagram of a second pulley according to an embodiment of the present application;

[0030] Figure 13 FIG. 14 is a schematic diagram of a sliding block according to an embodiment of the present application;

[0031] Figure 14 FIG. 15 is a schematic diagram of a mechanism hanging plate according to an embodiment of the present application;

[0032] Figure 15is a hanging schematic diagram of the pendant of the embodiment of the present application. DETAILED DESCRIPTION

[0033] The technical solutions of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] The solar panel assembly of the flexible solar wing is driven to expand or contract by a three-dimensional rotating mechanism. The thickness of the solar panel of the new flexible solar wing is below 1 mm, and the length of the flexible solar wing is above 12 m. In the overall assembly integration, expansion test and other verification tests of the flexible solar wing, the traditional gravity unloading system is difficult to meet the unloading requirements of the flexible solar wing.

[0035] As shown in Figure 1 The present embodiment provides a gravity unloading system 100 for a flexible solar wing. The gravity unloading system 100 includes a support 1, a first guide rail 2, a first trolley 3, a driving assembly 4, a balancing assembly 5, a second guide rail 6 and a second trolley 7. The gravity unloading system 100 is used for unloading the flexible solar wing during the test of expanding and contracting the flexible solar wing.

[0036] As shown in Figure 2 The support 1 includes a first cross bar 11, a support bar 12 and a second cross bar 13. The first cross bar 11 is located at the bottom end of the support bar 12, and the second cross bar 13 is located at the top end of the support bar 12. The first cross bar 11 and the second cross bar 13 are both located in the horizontal direction, and the support bar 12 is located in the vertical direction. A set of the first cross bar 11, the support bar 12 and the second cross bar 13 form a support structure, and multiple support structures are arranged in sequence. The support 1 is made of profiled material, and the height of the support 1 is set according to requirements.

[0037] As shown in Figure 3 The first guide rail 2 is arranged on the second cross bar 13 of the support 1. Optionally, the number of the first guide rails 2 is multiple, and the multiple first guide rails 2 are parallel to each other.

[0038] As shown in Figure 4 , Figure 4 The multiple first trolleys 3 are slidably arranged on the first guide rail 1, and the multiple first trolleys 3 are arranged in sequence on the first guide rail 1. The adjacent first trolleys 3 can be connected by a flexible rope, such as a steel wire rope. The sliding of the first trolley 3 at the front end can drive the remaining first trolleys 3 to expand in sequence. The first trolley 3 can use an existing trolley structure. The number of the first trolleys 3 is set according to requirements. In the present embodiment, the moving direction of the first trolley 3 when expanding is the front direction.

[0039] As shown in Figure 5 The driving assembly 4 is used to drive the plurality of first trolleys 3 to move along the first guide rail 2. In this embodiment, the driving assembly 4 includes a motor, a gear 41 and a rack 42, the rack 42 is arranged on the support 1, and the rack 42 extends parallel to the first guide rail 2. The gear 41 is connected to the output shaft of the motor, and the rotation of the gear 41 driven by the motor is converted into the horizontal movement of the gear 41 on the rack 42. The foremost first trolley 3 is connected to the driving assembly 4, and the driving assembly 4 drives the foremost first trolley 3 to move in the unfolding direction, so that the plurality of first trolleys 3 can be gradually unfolded. The driving assembly 4 drives the foremost first trolley 3 to move in the folding direction, so that the plurality of first trolleys 3 can be gradually folded. Optionally, the driving assembly 4 is controlled by remote control.

[0040] Each trim assembly 5 corresponds to a first trolley 3, and the trim assembly 5 is suspended on the corresponding first trolley 3. As shown in Figure 6 The trim assembly 5 is used to hang the solar panel 210 of the flexible solar wing, and each trim assembly 5 hangs at least one solar panel 210 to realize the unloading of the solar panel 210.

[0041] The second guide rail 6 is arranged below the support 1, and the second guide rail 6 is arranged parallel to the first guide rail 2. Optionally, the second guide rail 6 is suspended below the support 1.

[0042] A plurality of second trolleys 7 are slidably arranged on the second guide rail 6, and the second trolley 7 is used to hang the three-dimensional rotating mechanism 220 of the flexible solar wing to realize the unloading of the three-dimensional rotating mechanism 220.

[0043] The use process of the gravity unloading system 100 of this embodiment includes:

[0044] According to the weight of each solar panel 210 of the flexible solar wing, the corresponding trim assembly 5 is determined;

[0045] The solar panel 210 is hung on the corresponding trim assembly 5;

[0046] The three-dimensional rotating mechanism 220 of the flexible solar wing is hung on the second trolley 7.

[0047] For example, the unfolding and folding test of the flexible solar wing is carried out, the three-dimensional rotating mechanism 220 of the flexible solar wing drives the solar panel 210 to unfold through the tensioning rope 230, the driving assembly 4 drives the plurality of first trolleys 3 to gradually unfold following the solar panel 210, and the driving of the driving assembly 4 can avoid the pulling of the first trolley 3 to the solar panel 210, preventing the damage of the solar panel 210. The three-dimensional rotating mechanism 220 drives the plurality of second trolleys 7 to gradually unfold on the second guide rail 6 during the unfolding process.

[0048] The gravity unloading system 100 of the flexible solar wing of the present application integrates the solar panel unloading and three-dimensional rotating mechanism unloading functions, saves a large amount of space, and reduces the research and development cost. The driving assembly 4 drives the first pulley 3 to move, and the balancing assembly 5 has a clear sequence during the unfolding or folding process, without hooking interference phenomenon.

[0049] As shown in Figure 7 , in an optional solution, the balancing assembly 5 includes a first balancing block 51, a first suspension rope 52, and a first hanging rope 53.

[0050] As shown in Figure 8 , the first balancing block 51 includes a first suspension part 511 and a first counterweight part 512. The height of the first suspension part 511 is less than the height of the first counterweight part 512, and the first suspension part 511 is arranged on one side of the first counterweight part 512. The top surface of the first suspension part 511 is flush with the top surface of the first counterweight part 512 to form the top surface of the first balancing block 51.

[0051] One end of the first suspension rope 52 is connected to the first pulley 3, and the other end of the first suspension rope 52 is connected to the first suspension part 511. The first balancing block 51 is suspended on the first pulley 3 through the first suspension rope 52. Optionally, the first suspension rope 52 is a steel wire rope.

[0052] One end of the first hanging rope 53 is connected to the end of the first suspension part 511 away from the first counterweight part 512, and the other end of the first hanging rope 53 is used to hang the solar panel 210 of the flexible solar wing. Optionally, the first hanging rope 53 is a steel wire rope. According to the weight of the solar panel 210, the first balancing block 51 is selected to be adapted. When the solar panel 210 is hung on the first hanging rope 53, the top surface of the first balancing block 51 is in a horizontal position, achieving the unloading of the solar panel hung on the first hanging rope 53.

[0053] In an optional solution, the first suspension part 511 of the first balancing block 51 is provided with a first sliding hole 513, and the first counterweight part 512 is provided with a second sliding hole 514. The balancing assembly 5 further includes a first counterweight block 541 and a second counterweight block 542. The first counterweight block 541 is slidable along the first sliding hole 513 through a lifting rope, and the second counterweight block 542 is slidable along the second counterweight block 542 through a lifting rope. Due to the weight deviation caused by the machining error and the measurement error, when the solar panel 210 is hung on the first hanging rope 53, the top surface of the first balancing block 51 is slightly deviated from the horizontal state. After the solar panel assembly is unfolded to the position, the positions of the first counterweight block 541 and the second counterweight block 542 are adjusted to fine-tune the height of the corresponding solar panel, so that the entire solar panel assembly needs to be adjusted to the same height, meeting the test requirements of the flexible solar wing.

[0054] As shown in Figure 9 and Figure 10As shown, at least part of the leveling assembly 5 further comprises a second leveling block 55, a second suspension rope 56 and a second mounting rope 57. In the embodiment, the first leveling block 51 is provided in the frontmost leveling assembly and the rearmost leveling assembly, and the first leveling block 51 and the second leveling block 55 are provided in the remaining leveling assemblies.

[0055] The second leveling block 55 has the same shape as the first leveling block 51, and comprises a second suspension part 551 and a second counterweight part 552. The height of the second suspension part 551 is less than that of the second counterweight part 552, and the second suspension part 551 is arranged on one side of the second counterweight part 552. The top surface of the second suspension part 551 is flush with the top surface of the second counterweight part 552 to form the top surface of the second leveling block 55.

[0056] One end of the second suspension rope 56 is connected to the first suspension part 511 of the first leveling block 51, and the other end of the second suspension rope 56 is connected to the second suspension part 551. The connection point of the second suspension rope 56 at the first suspension part 511 is directly below the connection point of the first suspension rope 52 at the first suspension part 511, and the suspension of the second leveling block 55 does not affect the leveling of the first leveling block 51. Optionally, the second suspension rope 56 is a steel wire rope.

[0057] One end of the second mounting rope 57 is connected to the end of the second suspension part 551 away from the second counterweight part 552, and the other end of the second mounting rope 57 is used to mount another solar panel of the flexible solar wing. Optionally, the second mounting rope 57 is a steel wire rope. The second leveling block 55 is selected according to the weight of the mounted solar panel, and when the solar panel is mounted on the second mounting rope 55, the top surface of the second leveling block 55 is in a horizontal position, achieving the unloading of the solar panel mounted on the second mounting rope 55. The solar panel mounted by the first leveling block 51 of the same leveling assembly 5 is adjacent to the solar panel mounted by the second leveling block 55.

[0058] In the embodiment, the first leveling block 51 is provided in the frontmost leveling assembly and the rearmost leveling assembly, and each of the remaining leveling assemblies has the first leveling block 51 and the second leveling block 55, so that each of the remaining leveling assemblies can mount two adjacent solar panels, and the structure of the gravity unloading system 100 is simplified.

[0059] In an optional scheme, a third sliding hole 553 is arranged in the second suspension part 551, and a fourth sliding hole 554 is arranged in the second counterweight part 552. The leveling assembly 5 with the second leveling block 55 further comprises a third counterweight block 543 and a fourth counterweight block 544, the third counterweight block 543 is slidable along the third sliding hole 553 through a lifting rope, and the fourth counterweight block 544 is slidable along the fourth sliding hole 554 through a lifting rope. By adjusting the positions of the third counterweight block 543 and the fourth counterweight block 544, the height of the corresponding solar panel can be finely adjusted, and the entire solar panel assembly needs to be adjusted to the same height.

[0060] As shown in Figure 11 Optionally, the thickness of the first balancing block 51 and the second balancing block 55 is less than 3mm, which meets the folding requirement of the thin solar panel assembly. The first balancing block and the second balancing block of adjacent balancing assemblies are staggered. For example, the first balancing block 51 and the second balancing block 55 of one balancing assembly 5 are located at the first layer and the third layer respectively, and the first balancing block 51 and the second balancing block 55 of the adjacent balancing assembly 5 are located at the second layer and the fourth layer respectively, so that the corresponding balancing blocks of adjacent solar panels are staggered up and down, avoiding interference between the balancing blocks when the solar panel assembly is folded.

[0061] As shown in Figure 12 In an optional solution, the second trolley 7 includes a sliding block 71 and a roller 72, and the sliding block 71 is suspended on the second guide rail 6 through the roller 72.

[0062] As shown in Figure 13 The sliding block 71 is U-shaped as a whole, and the center of the sliding block 71 is provided with a sliding groove 711 matched with the second guide rail 6, and the sliding block 71 is arranged below the second guide rail 6. The roller 72 is rotatably arranged on the sliding block 71 through a rotating shaft 73, and the axis of the rotating shaft 73 is arranged obliquely relative to the vertical direction. The two sides of the sliding block 71 are provided with the rollers 72, which are rollably arranged above the second guide rail 6 to suspend the sliding block 71 on the second guide rail 6. The three-dimensional rotating mechanism of the flexible solar wing is mounted on the sliding block 71, and the unloading of the three-dimensional rotating mechanism is realized by cooperation of the plurality of second trolleys 7. The second trolley 7 follows the three-dimensional rotating mechanism to be unfolded or folded.

[0063] Optionally, the number of the rollers 72 is at least three. In the embodiment, one roller 72 is arranged on one side of the sliding block 71, and two rollers 72 are arranged on the other side of the sliding block 71, which is conducive to stable sliding of the second trolley 7 along the second guide rail 6.

[0064] As shown in Figure 14 The gravity unloading system 100 further includes a mechanism hanging plate 81 connected to the sliding block 71 of the second trolley 7 through a suspension rope 82. In the embodiment, the shape of the mechanism hanging plate 81 is isosceles triangle, and the suspension rope 82 is connected to the top of the mechanism hanging plate 81. At least two third mounting ropes 83 are arranged on the two sides of the mechanism hanging plate 81 respectively, and the third mounting ropes 83 are used for mounting the three-dimensional rotating mechanism of the flexible solar wing. The arrangement of the at least two third mounting ropes 83 can improve the stability of unloading the three-dimensional rotating mechanism.

[0065] As shown in Figure 15As shown, the gravity unloading system 100 further comprises an angle sensor 91 arranged on the first trolley 3 at the front end. Optionally, the angle sensor 91 is connected to the solar panel at the front end through a connecting rope. When the solar panel assembly moves, the solar panel and the first trolley 3 above it have a positional difference, causing the connecting rope to tilt, and the angle sensor 91 can detect the tilt angle of the connecting rope in real time and generate a signal. The signal of the angle sensor 91 is sent to the controller of the driving assembly 4 to control the moving direction and speed of the driving assembly 4. When the signal of the angle sensor 91 is positive, it means that the first trolley 3 lags behind the corresponding solar panel, and the driving assembly 4 moves forward. When the signal of the angle sensor 91 is negative, it means that the first trolley 3 leads the corresponding solar panel, and the driving assembly 4 moves backward. The speed of the driving assembly 4 is controlled by the absolute value of the signal of the angle sensor 91.

[0066] However, due to the damping of the gravity unloading system 100 itself and the high height of the gravity unloading system 100 from the ground, the angle sensor 91 cannot timely sense the angle change of the connecting rope connecting the solar panel, which may cause the solar panel to have started moving, but the driving assembly 4 cannot immediately follow due to the angle sensor 91 not sensing the angle change, ultimately causing the solar panel to be damaged or pulled apart.

[0067] In an optional solution, a through hole is arranged on the flexible solar wing, for example, a through hole is arranged on the solar panel at the front end or the pivot of the solar panel at the front end. One end of a third suspension rope 92 is connected to the angle sensor 91, and the other end of the third suspension rope 92 passes through the through hole on the flexible solar wing to connect a line sinker 93 below the flexible solar wing. The angle sensor 91 can detect the tilt angle of the third suspension rope 92 in real time and generate a signal. When the solar panel and the first trolley 3 above it have a positional difference, the third suspension rope 92 can slightly slide in the through hole on the flexible solar wing to avoid pulling the solar panel. Optionally, the weight of the line sinker 93 is more than 1 kg.

[0068] The gravity unloading system 100 of the flexible solar wing of the embodiment simultaneously realizes the unloading of the solar panel and the three-dimensional rotating mechanism, has high integration, saves a large amount of space, and reduces costs. The plurality of trimming assemblies are suitable for the unloading of the flexible solar panel, realize the trimming of the center of mass of the solar panel, and have a clear sequence in the unfolding and folding process without hooking interference. The trimming blocks of adjacent trimming assemblies are located at different heights and do not interfere with each other, meeting the unloading requirements of thin solar panels.

[0069] The above has carried out the detailed introduction to the embodiment of the application. The principle and implementation mode of the application are described by applying specific examples in this paper, and the above embodiment is only used to help understand the technical scheme of the application and its core idea. Therefore, the changes or deformations made by the person skilled in the art on the basis of the specific implementation mode and the application range of the application all belong to the protection range of the application. In summary, the content of the specification should not be understood as a limitation of the application.

Claims

1. A gravity unloading system for a flexible solar array, characterized in that, include: support; The first guide rail is mounted on the bracket; Multiple first trolleys are slidably mounted on the first guide rail; A drive assembly is used to drive the plurality of first trolleys to move along the first guide rail; Multiple trimming assemblies are suspended on corresponding first trolleys, and the trimming assemblies are used to mount the solar panels of the flexible solar array; The second guide rail is arranged parallel to the first guide rail; Multiple second trolleys are slidably mounted on the second guide rail. The second trolleys are used to mount the three-dimensional rotation mechanism of the flexible solar array. The balancing component includes: The first balancing block includes a first suspension part and a first counterweight part. The first suspension part is disposed on one side of the first counterweight part. The top surface of the first suspension part is flush with the top surface of the first counterweight part to form the top surface of the first balancing block. The first suspension part is provided with a first sliding hole, and the first counterweight part is provided with a second sliding hole. A first suspension rope, one end of which is connected to the first pulley, and the other end of which is connected to the first suspension part; The first mounting rope has one end connected to the end of the first suspension part, and the other end of the first mounting rope is used to mount the solar panel of the flexible solar wing. The first counterweight can slide along the first sliding hole via a suspension rope; The second counterweight can slide along the second sliding hole via a suspension rope.

2. The gravity unloading system for the flexible solar array according to claim 1, characterized in that, At least part of the trim assembly also includes: The second balancing block includes a second suspension part and a second counterweight part, wherein the second suspension part is disposed on one side of the second counterweight part; The second suspension rope has one end connected to the first suspension part of the first balancing block, and the other end connected to the second suspension part. The second mounting rope has one end connected to the end of the second suspension part, and the other end of the second mounting rope is used to mount the solar panel of the flexible solar wing.

3. The gravity unloading system for the flexible solar array according to claim 2, characterized in that, The at least part of the trim assembly also includes: The third counterweight is slidably mounted on the second suspension part; The fourth counterweight is slidably disposed on the second counterweight part.

4. The gravity unloading system for the flexible solar array according to claim 2, characterized in that, The first and second balancing blocks of at least partially adjacent balancing components are staggered.

5. The gravity unloading system for the flexible solar array according to claim 1, characterized in that, The second pulley includes: The slider includes a groove adapted to the second guide rail; A roller is rotatably mounted on the slider, and the slider is suspended on the second guide rail via the roller.

6. The gravity unloading system for the flexible solar array according to claim 5, characterized in that, The number of rollers is at least three, and the at least three rollers are respectively disposed on both sides of the slider.

7. The gravity unloading system for the flexible solar array according to claim 5, characterized in that, Also includes: The mechanism mounting plate connects to the second trolley; At least two third mounting ropes are respectively disposed on both sides of the mechanism mounting plate, and the at least two third mounting ropes are used to mount the three-dimensional rotation mechanism of the flexible solar array.

8. The gravity unloading system for the flexible solar array according to claim 1, characterized in that, Also includes: An angle sensor is disposed on the first trolley closest to the drive assembly, and the drive assembly is controlled to operate based on the signal from the angle sensor; The third suspension rope is connected at one end to the angle sensor; A plumb bob, with the other end of the third suspension rope passing through a flexible solar panel and connected to the plumb bob.

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