A sliding deployment and unloading system for an offset-frame reflector

Abstract

A sliding deployment and unloading system for an offset-frame reflector includes a first offset angle adjustment device, a distributed self-tracking sliding device, a self-balancing height compensation device, and a second offset angle adjustment device. The first offset angle adjustment device is located at the top of the entire system and provides a fixed connection point for the system, while also adjusting the deflection angle of the entire system. The upper surface of the distributed self-tracking sliding device is connected to the first offset angle adjustment device, and multiple sets of guide rail sliding units are arranged on the lower surface to enable the self-tracking of the deployment trajectory of the offset-frame reflector. The self-balancing height compensation device includes multiple sets of compensation units, one end of each compensation unit is connected to a guide rail sliding unit, and the other end is connected to an unloading point on the offset-frame reflector, for torque compensation at each unloading point of the offset-frame reflector. This invention effectively avoids mutual interference between the unloading components during the retraction and deployment of the reflector, ensuring orderly and stable unloading of the reflector.

Description

Technical Field

[0001] This invention relates to a sliding deployment and unloading system for an offset-feed structure reflector, which can be used for ground unloading to simulate the on-orbit weightlessness of an antenna, and belongs to the field of ground zero-gravity unloading technology for large spaceborne deployable antennas. Background Technology

[0002] During the on-orbit deployment of a spaceborne antenna, it must experience a zero-gravity environment. The gravity environment during ground development will greatly affect the dynamic characteristics of various mechanisms and modules during deployment, making it impossible to accurately predict the on-orbit deployment characteristics and antenna deployment status. Therefore, it is necessary to simulate the zero-gravity environment through a ground unloading system to minimize the impact of ground gravity on antenna deployment.

[0003] Offset-fed rig reflectors require short deployment times and high speeds, necessitating the development of corresponding unloading devices tailored to their structure, deployment method, and trajectory. These unloading devices must be able to quickly match the deployment trajectory, and the unloading system must not interfere with the antenna's operational functions during deployment. Existing unloading systems for offset-fed rig reflectors have several shortcomings: current systems employ a single-pendulum suspension for unloading, using elastic elements for displacement compensation during deployment. This results in inconsistent unloading force during deployment. Furthermore, to minimize the impact of the unloading system on reflector deployment, the installation space required for the unloading system must increase with the reflector's mechanical aperture. When the reflector aperture increases to a certain extent, the unloading system becomes unsuitable for ground-based deployment tests. Summary of the Invention

[0004] The technical problem solved by the present invention is to overcome the shortcomings of the prior art and provide a sliding deployment and unloading system for an offset-feed frame reflector, which can quickly match the deployment trajectory and does not affect the movement function of the antenna during deployment.

[0005] The technical solution of this invention is: a sliding deployment and unloading system for an offset-frame reflector, comprising:

[0006] The device comprises a first offset angle adjustment device, a distributed self-tracking sliding device, a self-balancing height compensation device, and a second offset angle adjustment device; wherein:

[0007] The first offset angle adjustment device is located at the top of the entire system and is used to provide a fixed connection point for the system while adjusting the deflection angle of the entire system.

[0008] The upper surface of the distributed self-tracking sliding device is connected to the first offset angle adjustment device, and the lower surface is equipped with multiple sets of guide rail sliding units to realize the self-tracking of the deployment trajectory of the offset frame reflector.

[0009] The self-balancing height compensation device includes multiple sets of compensation units, the number of which is equal to the number of guide rail sliding units. One end of each set of compensation units is connected to a guide rail sliding unit, and the other end is connected to an unloading point on the offset frame reflector, which is used to compensate for the torque at each unloading point of the offset frame reflector.

[0010] The second offset angle adjustment device is located at the bottom of the system, with its upper end in contact with the edge of the offset frame reflector. The second offset angle adjustment device can be moved and fixed to cooperate with the first offset angle adjustment device to maintain the specific position and attitude of the offset frame reflector.

[0011] Preferably, the first offset angle adjustment device includes a top plate, a length adjustment unit, and a bottom plate, with the number of length adjustment units being greater than or equal to 4; each length adjustment unit is connected to the top plate at one end and to the bottom plate at the other end, adjusting the angle between the top plate and the bottom plate.

[0012] Preferably, each length adjustment unit includes: a forward screw, a bidirectional internal threaded sleeve, a reverse screw, an upper connecting hinge, and a lower connecting hinge to adjust the overall length. Specifically:

[0013] One end of the bidirectional internal threaded sleeve is connected to the forward screw, and the other end is connected to the reverse screw; the other end of the forward screw is connected to the upper connecting hinge, and the other end of the reverse screw is connected to the lower connecting hinge; the upper connecting hinge and the lower connecting hinge are respectively connected to the top plate and the bottom plate;

[0014] The deflection angle of the entire unloading system is adjusted by using forward and reverse screws and by rotating a bidirectional internal threaded sleeve.

[0015] Preferably, the distributed self-tracking sliding device includes: a top plate and Q sets of guide rail sliding units installed on the lower surface of the top plate, where Q ≥ 2;

[0016] Each set of guide rail sliding units includes a linear guide rail, a C-shaped trolley, and connecting hinges; wherein: each linear guide rail is provided with connecting hinges at both ends, and the top plate is connected to the lower surface through the connecting hinges; the C-shaped trolley is installed on the linear guide rail, and when the offset frame reflector is deployed, it drives the C-shaped trolley to move along the linear guide rail.

[0017] Preferably, the guide rail sliding unit is symmetrically and radially offset on the lower surface of the top plate, and its installation direction is the same as the unfolding motion trajectory of the frame reflector. Specifically:

[0018] The linear guide rail of the distributed self-tracking sliding device is installed along the direction from the hanging point of the offset frame reflector in the retracted state to the hanging point after deployment. The unloading point in the retracted state is denoted as P. i-s Let i = 1, 2, 3, ..., Q, and let P be the unloading point in the expanded state.i-d Let i = 1, 2, 3, ..., Q. The expanded path of each unloading point is represented by a straight line L. i-r The perpendicular bisector of the unfolded path is denoted as S. i-m Each guide rail is represented as P. i i = 1, 2, 3...Q;

[0019] The specific method for determining the unloading guide rail is as follows: the top mounting plane of the unloading system is S0, with a height of H1; the mounting plane of the guide rail is S1, with a height of H2; the two satisfy the relationship H1 < H2; and the centroid of the reflector in its deployed state is P. w The projection point of the center of gravity onto the top mounting plane S0 is P0, and the perpendicular bisector S of the unfolded path of each unloading point is... i-m The intersection line L is formed after intersecting with the mounting plane S0 at the top of the system. i-m With the intersection line L i-m Given the normal, find the plane passing through the centroid projection point P0, denoted as S. i-v The plane S i-v Intersection line L i-m The intersection of these points will form a single point, denoted as P. i-cr Draw a straight line through P i-cr and P i-s The straight line intersects the guide rail mounting plane S1 to form an intersection point P. i-rs Continue drawing a straight line through P i-cr and P i-d The straight line intersects with the guide rail mounting plane S1, forming an intersection point P. i-rd Then the two intersection points P mentioned above i-rs and P i-rd The line L i-r That is, guide rail P i Installation direction, P i-rs P is the location where the unloading point i is converged. i-rd To determine the unfolded position of unloading point i, adjust the guide rail and connection P via height adjustment. i-rs P i-rd The angle θ between the lines i-r When the guide rail is in the retracted state, the unloading point P i-rs With unloading point P on the reflector i-s The line L between i-s Unloading point P of the guide rail in the unfolded state i-rd With unloading point P on the reflector i-d The line L between i-d Satisfying the length relationship L i-s =L i-d Meanwhile, L in the folded state i-s Same as the retraction point P on the reflector i-s With unloading point P i-d The angle θ between the lines connecting themi-s L in unfolded state i-d Same as the retraction point P on the reflector i-d

[0020] With unloading point P i-d The angle θ between the lines connecting them i-d θ i-s =θ i-d <90°.

[0021] Preferably, each compensation unit in the self-balancing height compensation device includes a constant force elongation structure and upper and lower suspension cables; wherein:

[0022] The upper end of the upper sling is fixedly connected to the C-shaped trolley of the guide rail sliding unit. The upper end of the constant force elongation structure is connected to the upper sling, and the lower end is connected to the upper end of the lower sling. The lower end of the lower sling is fixedly connected to the unloading point on the off-center frame reflector.

[0023] The constant force elongation structure compensates for the length of each unloading suspension rope of the frame reflector. It includes: an integrated plate, a forward hub, a constant force spring, a reverse hub, and a transmission gear set. The two ends of the constant force spring are wound around the forward and reverse hubs respectively. After the two ends of the constant force spring are installed on the forward and reverse hubs, they generate a constant driving torque, driving the forward and reverse hubs to rotate respectively. Among them, the reverse hub and the gear set always maintain gear meshing. The rotation of the reverse hub drives the transmission gear set to release or tighten the lower suspension rope on which the rope is wound, thereby adjusting the length of the unloading rope of the frame reflector.

[0024] Preferably, the second offset angle adjustment device includes: a main support base, a flip-up plate, a rotating hinge, and an auxiliary support rod, wherein:

[0025] One end of the flip-up plate is connected to one end of the main support via a rotating hinge. One end of the auxiliary support rod is connected to the middle of the flip-up plate, and the other end can slide and be fixed on the upper surface of the support. This is used to adjust the flip-up angle of the flip-up plate and to maintain the flip-up plate's state.

[0026] The bottom of the main support is equipped with pulleys and a fixing structure to realize the overall movement and fixation of the second offset angle adjustment device, so as to work together with the first offset angle adjustment device to maintain the position and attitude of the frame reflector.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] (1) This invention is the first to use a self-compensating sliding deployment to achieve constant force and equal length unloading of gravity during the ground deployment of the off-feed frame reflector. This can effectively avoid mutual interference between the unloading components during the retraction and deployment of the reflector, and achieve orderly and stable unloading of the reflector.

[0029] (2) The present invention has a simple and easy-to-implement structure, good versatility, simple installation and debugging, and strong adaptability to unloading sites;

[0030] (3) The system of the present invention has the advantages of high rigidity, light weight, strong operability, convenient adjustment and adaptability to various offset frame reflectors. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the unloading state of the offset frame reflector sliding deployment and unloading system of the present invention.

[0032] Figure 2 This is a schematic diagram of the first offset angle adjustment device of the offset frame reflector sliding deployment and unloading system of the present invention.

[0033] Figure 3 This is a schematic diagram of the distributed self-tracking sliding device structure of the offset frame reflector sliding deployment and unloading system of the present invention.

[0034] Figure 4 This is a schematic diagram of the sliding unit structure of each guide rail of the offset frame reflector sliding deployment and unloading system of the present invention.

[0035] Figure 5 This is a schematic diagram of the method for determining the guide rail direction of the distributed self-tracking sliding device in the offset frame reflector sliding deployment and unloading system of the present invention.

[0036] Figure 6 This is a schematic diagram of the self-balancing height compensation device of the offset frame reflector sliding deployment unloading system of the present invention.

[0037] Figure 7 This is a schematic diagram of the second offset angle adjustment device of the offset frame reflector sliding deployment unloading system of the present invention. Detailed Implementation

[0038] A sliding deployment and unloading system for an offset-feed frame reflector, wherein the offset-feed frame reflector is a variant of a parabolic antenna, and its feed is offset from the axis of symmetry of the reflector, typically located on the side of the parent parabola. The sliding deployment and unloading system includes: a first offset angle adjustment device 1, a distributed self-tracking sliding device 2, a self-balancing height compensation device 3, and a second offset angle adjustment device 4;

[0039] The first offset angle adjustment device 1 is located at the top of the entire unloading system. It adjusts the deflection angle of the entire unloading system through positive and negative screws and provides a fixed connection point for the unloading system when the antenna (offset frame reflector 5) is deployed. The first offset angle adjustment device 1 includes at least 4 sets of length adjustment units 102. The angle between the top plate 101 and the bottom plate 103 is adjusted by adjusting the axial length of each other. Each set of length adjustment devices 102 includes a positive screw 1021, a bidirectional internal threaded sleeve 1022, a negative screw 1023, an upper connecting hinge 1024, and a lower connecting hinge 1025. One end of the bidirectional internal threaded sleeve 1022 is connected to the positive screw 1021, and the other end is connected to the negative screw 1023. The other end of the positive screw 1021 is connected to the upper connecting hinge 1024, and the other end of the negative screw 1023 is connected to the lower connecting hinge 1025. The upper connecting hinge 1024 and the lower connecting hinge 1025 are respectively connected to the top plate 101 and the bottom plate 103. The deflection angle of the entire unloading system is adjusted by using the forward screw 1021 and the reverse screw 1023, and by rotating the bidirectional internal threaded sleeve 1022.

[0040] The distributed self-tracking sliding device 2 is located below the first offset angle adjustment device 1 and is connected to the first offset angle adjustment device via screws. It is connected to multiple unloading points via multiple guide rail sliding units. The self-tracking of the frame reflector's deployment trajectory is achieved by the sliding of trolleys on the sliding device. The distributed self-tracking sliding module 2 includes Q groups of guide rail sliding units 202, where Q ≥ 2. The guide rail sliding units are oriented in the same direction as the frame reflector's deployment trajectory and are symmetrically radially and staggered in height on the lower surface of the top plate 201. Each group of guide rail sliding units 202 consists of a linear guide rail 2021, a C-shaped trolley 2022, and a connecting hinge 2023. Connecting hinges 2023 are provided at both ends of each linear guide rail 2021, connecting to the lower surface of the top plate 201. The guide rail sliding units in the distributed self-tracking sliding system 2 move in the same direction as the offset frame reflector 5's deployment trajectory, and are symmetrically radially and staggered in height to avoid interference between the unloading point trajectories during the frame reflector's deployment process.

[0041] The self-balancing height compensation device 3 is located between the distributed self-tracking sliding device 2 and the offset frame reflector 5. The self-balancing height compensation device 3 includes multiple sets of compensation units, the number of which is equal to the number of guide rail sliding units. Each set of compensation units consists of a constant force elongation structure 301 and corresponding unloading suspension ropes (upper suspension rope 302 and lower suspension rope 303). The upper end of the upper suspension rope 302 is fixedly connected to the C-shaped trolley 2022 of the guide rail sliding unit 202, and the lower end of the lower suspension rope 303 is fixedly connected to the unloading point of the offset frame reflector 5. The constant force elongation structure 301 is used to compensate for the length of each unloading suspension rope of the frame reflector. The constant force elongation structure 301 is provided with a constant driving torque by a constant force spring, and the rotational motion is converted into the extension and retraction motion of the suspension rope length through the internal transmission gear assembly.

[0042] The second offset angle adjustment device 4 is located at the bottom of the entire unloading system. It is used to match the unloading posture of the frame reflector before it is deployed. Its upper end contacts the edge of the offset frame reflector 5 and can be moved and fixed to maintain the specific position and posture of the frame reflector. The crank-slider mechanism consists of a main support 401, a flip-up plate 402, a rotating hinge 403, and an auxiliary support rod 404. One end of the flip-up plate 402 is connected to one end of the main support 401 via the rotating hinge 403, and its state is maintained by the auxiliary support rod 404. The mechanism mainly consists of a main support 401 and a flip-up plate. One end of the auxiliary support rod 404 is connected to the middle position of the flip-up plate 402, and the other end can slide and be fixed on the upper surface of the support 401. It is used to adjust the flip angle of the flip-up plate 402 and to maintain the state of the flip-up plate 402. The bottom end of the main support 401 is provided with a pulley and its fixing structure to realize the overall movement and fixation of the second offset angle adjustment device 4, thereby working together with the first offset angle adjustment device 1 to maintain the position and attitude of the frame reflector.

[0043] The motion trajectory of each unloading point is obtained based on the motion trajectory of the offset frame reflector. Based on the motion trajectory of each unloading point, the corresponding unloading follower device is installed above the unloading point.

[0044] To make the objectives, technical solutions, and advantages of the present invention clearer, the unloading device of the present invention will be described in further detail below with reference to the accompanying drawings.

[0045] like Figure 1 As shown, a sliding deployment and unloading system and method for an offset frame reflector is characterized by comprising a first offset angle adjustment device 1, a distributed self-tracking sliding device 2, a self-balancing height compensation device 3, and a second offset angle adjustment device 4.

[0046] like Figures 2-3As shown, the first offset angle adjustment device 1 is located at the top of the entire unloading system and consists of a top plate 101, a length adjustment unit 102, and a bottom plate 103. The top plate 101 is connected to the external support truss of the entire unloading system, and the two ends of the length adjustment unit 102 are connected to the top plate 101 and the bottom plate 103 respectively through mounting holes. The first offset angle adjustment device 1 includes at least four sets of length adjustment units 102, which adjust the overall length through a forward screw 1021, a bidirectional internal threaded sleeve 1022, a reverse screw 1023, an upper connecting hinge 1024, and a lower connecting hinge 1025, thereby adjusting the angle between the top plate 101 and the bottom plate 103. Further: One end of the bidirectional internal threaded sleeve 1022 is connected to the forward screw 1021, and the other end is connected to the reverse screw 1023; the other end of the forward screw 1021 is connected to the upper connecting hinge 1024, and the other end of the reverse screw 1023 is connected to the lower connecting hinge 1025; the upper connecting hinge 1024 and the lower connecting hinge 1025 are respectively connected to the top plate 101 and the bottom plate 103.

[0047] like Figure 4 As shown, the distributed self-tracking sliding device 2 is located below the first offset angle adjustment device 1. Its main structure is a top plate 201, which consists of one or more plates. The bottom surface of the top plate 201 has guide rail mounting holes for mounting Q groups of guide rail sliding units 202, where Q ≥ 2. The guide rail sliding units are positioned in the same direction as the unfolded motion trajectory of the frame reflector and are symmetrically radially and spatially offset on the lower surface of the top plate 201. Each group of guide rail sliding units 202 includes a linear guide rail 2021, a C-shaped trolley 2022, and a connecting hinge 2023. Connecting hinges 2023 are provided at both ends of each linear guide rail 2021, connecting to the lower surface of the top plate 201 via the connecting hinges 2023.

[0048] like Figure 5 As shown, the linear guide rail of the distributed self-tracking sliding device 2 is installed along the direction from the hanging point of the offset frame reflector in the retracted state to the hanging point after deployment. The unloading point in the retracted state is denoted as P. i-s (i = 1, 2, 3, ..., Q), the unloading point in the expanded state is denoted as P. i-d (i = 1, 2, 3, ..., Q), the expanded path of each unloading point is represented by a straight line L. i-r The perpendicular bisector of the unfolded path is denoted as S. i-m Each guide rail is represented as P. i (i = 1, 2, 3... Q), the specific method for determining the unloading guide rail is as follows: the top mounting plane of the unloading system is S0, with a height of H1; the mounting plane of the guide rail is S1, with a height of H2; the two satisfy the relationship H1 < H2; and the centroid of the reflector in its deployed state is P. wThe projection point of the center of gravity onto the top mounting plane S0 is P0, and the perpendicular bisector S of the unfolded path of each unloading point is... i-m The intersection line L is formed after intersecting with the mounting plane S0 at the top of the system. i-m With the intersection line L i-m Given the normal, find the plane passing through the centroid projection point P0, denoted as S. i-v The plane intersects with line L. i-m The intersection of these points will form a single point, denoted as P. i-cr Draw a straight line through P i-cr and P i-s The straight line will intersect with the guide rail mounting plane S1, forming an intersection point P. i-rs Continue drawing a straight line through P. i-cr and P i-d The straight line will intersect with the guide rail mounting plane S1, forming an intersection point P. i-rd Then the two intersection points P mentioned above i-rs and P i-rd The line L i-r That is, guide rail P i Installation direction, P i-rs P is the location where the unloading point i is converged. i-rd To determine the unfolded position of unloading point i, adjust the guide rail and connection P via height adjustment. i-rs P i-rd The angle θ between the lines i-r Satisfying relation L i-s =L i-r θ i-s =θ i-d <90°.

[0049] like Figure 6 As shown, the self-balancing height compensation system 3 is located between the distributed self-tracking sliding system 2 and the offset frame reflector 5. The self-balancing height compensation device 3 includes multiple sets of compensation units, the number of which is equal to the number of guide rail sliding units. Each set of compensation units consists of a constant force elongation device 301, an upper suspension cable 302, and a lower suspension cable 303.

[0050] The constant force elongation structure 301 includes: an integrated plate 3011, a forward hub 3012, a constant force spring 3013, a reverse hub 3014, and a transmission gear set 3015. The two ends of the constant force spring 3013 are respectively wound around the forward hub 3012 and the reverse hub 3014. After the reverse hub 3014 is driven by the constant force spring 3013, the gear on the reverse hub 3014 drives the transmission gear set 3015 to release or tighten the lower sling 303 on which the winding rope is wound, thereby adjusting the length of the unloading rope of the frame reflector.

[0051] like Figure 7As shown, the second offset angle adjustment device 4 is located at the bottom of the entire unloading system. It consists of a main support 401 and a flip-up plate 402, and is rotatably connected by a pin.

[0052] According to the present invention, a sliding deployment and unloading system and method for an offset frame reflector is provided. In this embodiment, the implementation process of the sliding deployment and unloading system and method for an offset frame reflector is as follows:

[0053] Based on the offset-fed reflector structure and mass distribution, a total of 18 unloading points are arranged, vertically connected to the unloading system via unloading ropes. During the reflector unlocking and deployment process, the 18 unloading ropes are radially deployed along the linear guide rail via C-shaped pulleys. During deployment, the unloading devices at each unloading point work in coordination until the antenna is fully deployed.

[0054] This invention is the first to employ a self-compensating sliding deployment and unloading device to unload gravity during the ground deployment of an offset-feed frame reflector. This effectively avoids interference between the unloading components during the retraction and deployment of the reflector, ensuring orderly and stable unloading. The unloading system is versatile, easy to install and debug, has low requirements for unloading height, and is highly adaptable.

[0055] The above description is merely the optimal specific uninstallation method of the present invention, but the protection scope of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the protection scope of the present invention.

[0056] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A sliding deployment and unloading system for an offset-feed frame reflector, characterized in that... include: The device comprises a first offset angle adjustment device, a distributed self-tracking sliding device, a self-balancing height compensation device, and a second offset angle adjustment device; wherein: The first offset angle adjustment device is located at the top of the entire system and is used to provide a fixed connection point for the system while adjusting the deflection angle of the entire system. The upper surface of the distributed self-tracking sliding device is connected to the first offset angle adjustment device, and the lower surface is equipped with multiple sets of guide rail sliding units to realize the self-tracking of the deployment trajectory of the offset frame reflector. The self-balancing height compensation device includes multiple sets of compensation units, the number of which is equal to the number of guide rail sliding units. One end of each set of compensation units is connected to a guide rail sliding unit, and the other end is connected to an unloading point on the offset frame reflector, which is used to compensate for the torque at each unloading point of the offset frame reflector. The second offset angle adjustment device is located at the bottom of the system, and its upper end contacts the edge of the offset frame reflector. At the same time, the second offset angle adjustment device can be moved and fixed to cooperate with the first offset angle adjustment device to maintain the specific position and attitude of the offset frame reflector. The distributed self-tracking sliding device includes: a top plate and Q sets of guide rail sliding units installed on the lower surface of the top plate, where Q≥2; The guide rail sliding unit is symmetrically and radially offset on the lower surface of the top plate, and its installation direction is the same as the unfolding motion trajectory of the frame reflector. Specifically: The linear guide rail of the distributed self-tracking sliding device is installed along the direction from the hanging point of the offset frame reflector in the retracted state to the hanging point after deployment. The unloading point in the retracted state is denoted as P. i-s The unloading point in the expanded state is denoted as P. i-d The expanded path of each unloading point is represented by a straight line L. i-r The perpendicular bisector of the unfolded path is denoted as S. i-m Each guide rail is represented as P. i , i=1,2,3......Q; The specific method for determining the unloading guide rail is as follows: the top mounting plane of the unloading system is S0, with a height of H2; the mounting plane of the guide rail is S1, with a height of H1; the two satisfy the relationship H1 < H2; and the centroid of the reflector in its deployed state is P. w The projection point of the center of gravity onto the top mounting plane S0 is P0, and the perpendicular bisector S of the unfolded path of each unloading point is... i-m The intersection line L is formed after intersecting with the mounting plane S0 at the top of the system. i-m With the intersection line L i-m Given the normal, find the plane passing through the centroid projection point P0, denoted as S. i-v The plane S i-v Intersection line L i-m The intersection of these points will form a single point, denoted as P. i-cr Draw a straight line through P i-cr and P i-s The straight line intersects the guide rail mounting plane S1 to form an intersection point P. i-rs Continue drawing a straight line through P i-cr and P i-d The straight line intersects with the guide rail mounting plane S1, forming an intersection point P. i-rd Then the intersection point P i-rs and P i-rd The line L i-r That is, guide rail P i Installation direction, P i-rs P is the location where the unloading point i is converged. i-rd To determine the unfolded position of unloading point i, adjust the guide rail and connection P via height adjustment. i-rs P i-rd The angle between the lines When the guide rail is in the retracted state, the unloading point P i-rs With unloading point P on the reflector i-s The line L between i-s Unloading point P of the guide rail in the unfolded state i-rd With unloading point P on the reflector i-d The line L between i-d Satisfying the length relationship L i-s =L i-d Meanwhile, L in the folded state i-s The unloading point P on the same reflector i-s With unloading point P i-d The angle between the lines L in unfolded state i-d The unloading point P on the same reflector i-s With unloading point P i-d The angle between the lines , .

2. The offset frame reflector sliding deployment and unloading system according to claim 1, characterized in that: The first offset angle adjustment device includes a top plate, a length adjustment unit, and a bottom plate, with the number of length adjustment units being greater than or equal to 4; each length adjustment unit is connected to the top plate at one end and to the bottom plate at the other end, adjusting the angle between the top plate and the bottom plate.

3. The offset frame reflector sliding deployment and unloading system according to claim 2, characterized in that: Each length adjustment unit includes: a forward screw, a double-sided internal threaded sleeve, a reverse screw, an upper connecting hinge, and a lower connecting hinge. Specifically: One end of the bidirectional internal threaded sleeve is connected to the forward screw, and the other end is connected to the reverse screw; the other end of the forward screw is connected to the upper connecting hinge, and the other end of the reverse screw is connected to the lower connecting hinge; the upper connecting hinge and the lower connecting hinge are respectively connected to the top plate and the bottom plate; The deflection angle of the entire unloading system is adjusted by using forward and reverse screws and by rotating a bidirectional internal threaded sleeve.

4. The offset frame reflector sliding deployment and unloading system according to claim 1, characterized in that: Each set of guide rail sliding units of the distributed self-tracking sliding device includes a linear guide rail, a C-shaped trolley, and a connecting hinge; wherein: each linear guide rail is provided with a connecting hinge at both ends, and the top plate is connected to the lower surface through the connecting hinge; the C-shaped trolley is installed on the linear guide rail, and when the offset frame reflector is deployed, it drives the C-shaped trolley to move along the linear guide rail.

5. The offset frame reflector sliding deployment and unloading system according to claim 4, characterized in that: Each compensation unit in the self-balancing height compensation device includes a constant force elongation structure and upper and lower suspension cables; wherein: The upper end of the upper sling is fixedly connected to the C-shaped trolley of the guide rail sliding unit. The upper end of the constant force elongation structure is connected to the upper sling, and the lower end is connected to the upper end of the lower sling. The lower end of the lower sling is fixedly connected to the unloading point on the off-center frame reflector. The constant force elongation structure compensates for the length of each unloading suspension rope of the frame reflector. It includes: an integrated plate, a forward hub, a constant force spring, a reverse hub, and a transmission gear set. The two ends of the constant force spring are wound around the forward and reverse hubs respectively. After the two ends of the constant force spring are installed on the forward and reverse hubs, they generate a constant driving torque, driving the forward and reverse hubs to rotate respectively. Among them, the reverse hub and the gear set always maintain gear meshing. The rotation of the reverse hub drives the transmission gear set to release or tighten the lower suspension rope wound on it, thereby adjusting the length of the unloading rope of the frame reflector.

6. The offset frame reflector sliding deployment and unloading system according to claim 1, characterized in that: The second offset angle adjustment device includes: a main support base, a flip-up plate, a rotating hinge, and an auxiliary support rod, wherein: One end of the flip-up plate is connected to one end of the main support via a rotating hinge. One end of the auxiliary support rod is connected to the middle of the flip-up plate, and the other end can slide and be fixed on the upper surface of the main support. This is used to adjust the flip-up angle of the flip-up plate and to maintain the flip-up plate's state. The bottom of the main support is equipped with pulleys and a fixing structure to realize the overall movement and fixation of the second offset angle adjustment device, so as to work together with the first offset angle adjustment device to maintain the position and attitude of the frame reflector.

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