Large satellite load turnover high-precision horizontal adjustment lifting appliance

Abstract

The invention provides a large satellite load turnover high-precision horizontal adjustment lifting appliance which comprises a load mounting frame, a counterweight unit, a lifting rod assembly and hoisting equipment, and the load mounting frame comprises a special-shaped beam and a mounting claw mounted on one side of the special-shaped beam; the mounting claw is used for mounting an external satellite load, the counterweight unit is mounted on the other side of the special-shaped beam, the bottom of the suspender assembly is rotatably mounted on the side of the counterweight unit, the hoisting equipment is mounted on the counterweight unit and connected with the top of the suspender assembly, and the top of the suspender assembly is connected with the hoisting equipment. The modular design of the load mounting frame and the counterweight unit is adopted, the mounting frame can be adaptively designed according to different loads, the universality of the lifting appliance is improved, turnover operation can be completed through cooperation of the lifting rod assembly, the counterweight unit and the lifting device, and the lifting appliance is convenient to use. Continuous angle conversion from a load initial horizontal lifting state to a vertical satellite loading state is achieved, and the device adapts to various satellite loading working conditions such as loading and unloading on a horizontal plane, an inclined plane and a vertical plane.

Description

Technical Field

[0001] The present invention relates to the technical field of satellite payload hoisting equipment, and in particular to a flippable and high-precision horizontal adjustment hoisting equipment for large satellite payloads. Background Art

[0002] With the development of satellite technology, the density of payloads on satellites has continued to increase, and the layout of payloads on satellites has become more compact. At the same time, the volume and weight of payloads are getting larger and larger, and the configuration is becoming more and more complex, which places higher and higher requirements on the installation of payloads on satellites.

[0003] Usually, when the payload is installed on the satellite, the satellite is in a vertical parking state, and the payload is hoisted to the installation surface on the satellite through a hoist. The installation surface on the satellite generally has horizontal, vertical, and inclined states. The ground parking posture of the payload is inconsistent with the posture on the satellite. When lifting and installing the satellite, it is necessary to convert its initial parking posture so that the assembly surface is parallel to the installation surface on the satellite. Traditional payload hoists do not have the posture conversion function. Generally, a parking conversion device is used for multiple lifting, parking, and adjustment to the installation posture, which is inefficient. Therefore, it is urgent to develop a high-precision horizontal adjustment hoist for large satellite payloads to ensure that large satellite payloads can achieve flip posture conversion, and have a high-precision horizontal adjustment function after one lifting to meet the requirements of payload installation. Summary of the invention

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a high-precision horizontal adjustment hoisting device for large satellite payloads that can be flipped.

[0005] The large satellite payload flippable high-precision horizontal adjustment sling provided by the present invention comprises a payload installation frame, a counterweight unit, a sling assembly and a lifting device, wherein the payload installation frame comprises a special-shaped beam and a mounting claw installed on one side of the special-shaped beam;

[0006] The mounting claw is used to mount an external satellite payload, and the mounting point on the mounting claw matches the hole position of the hoisting interface of the external satellite payload;

[0007] A counterweight unit is installed on the other side of the special-shaped beam, the bottom of the boom assembly is rotatably installed on the side of the counterweight unit, the lifting equipment is installed on the counterweight unit, and the lifting equipment is connected to the top of the boom assembly, and the top of the boom assembly is used to connect the lifting equipment.

[0008] Preferably, the mounting claw comprises an upper mounting claw, a right mounting claw and a left mounting claw;

[0009] The upper mounting claw is mounted on the special-shaped beam through the upper lifting arm, the right mounting claw is mounted on the special-shaped beam through the right lifting arm, and the left mounting claw is mounted on the special-shaped beam through the left lifting arm;

[0010] The upper mounting claw, the right mounting claw and the left mounting claw are all provided with mounting parts, the mounting parts correspond to the hoisting interface holes of the external satellite payload, and the mounting parts are connected to the external satellite payload by screw connection.

[0011] Preferably, the counterweight unit comprises a circular mounting base plate, a counterweight block, a counterweight frame and a lead screw nut transmission mechanism;

[0012] One side of the circular mounting base is fixedly mounted on the special-shaped beam, and a counterweight frame is mounted on the other side of the circular mounting base. A screw and nut transmission mechanism is mounted inside the counterweight frame along the normal direction of the circular mounting base, and the counterweight block is movably mounted on the screw and nut transmission mechanism.

[0013] Preferably, the screw nut transmission mechanism comprises a support end cover, a guide rail assembly, a trapezoidal screw, a screw support assembly, a flange nut and a handwheel;

[0014] A support end cover is installed at one end of the counterweight frame away from the circular mounting base plate, and a hand wheel is installed on the support end cover;

[0015] The guide rail assembly and the trapezoidal screw are both installed inside the counterweight frame along the normal direction of the return-shaped mounting base plate, one end of the trapezoidal screw is installed on the inner side wall of the counterweight frame through the screw support assembly, and the other end of the trapezoidal screw is connected to the hand wheel;

[0016] The flange type nut is fixedly mounted on the counterweight block and is threadedly connected with the trapezoidal lead screw.

[0017] Preferably, the counterweight unit comprises two sets of counterweight blocks, counterweight frames and lead screw nut transmission mechanisms, and the two sets of counterweight blocks, counterweight frames and lead screw nut transmission mechanisms are installed side by side on the circular mounting base plate;

[0018] The boom assembly is rotatably arranged between two counterweight frames.

[0019] Preferably, the lifting equipment comprises a hand chain hoist and a lifting chain, the hand chain hoist is installed on a side of the counterweight unit where the boom assembly is not installed through a mounting bracket, and is connected to the top of the boom assembly through the lifting chain.

[0020] Preferably, the boom assembly comprises a lower rotating shaft, a main boom, an upper rotating shaft, a chain connecting block and a boom locking and limiting assembly;

[0021] A lower rotating shaft is provided at the bottom of the main boom and is rotatably mounted on the counterweight unit through the lower rotating shaft. An upper rotating shaft is provided at the top of the main boom and is rotatably connected to the chain connecting block through the upper rotating shaft.

[0022] The boom locking and limiting assembly is installed between the bottom of the main boom and the counterweight unit, and is used for limiting the main boom.

[0023] Preferably, the boom locking and limiting assembly comprises a butterfly nut, a fixing pile, an L-shaped mounting block, a buffer spring and a π-shaped stopper;

[0024] The fixing pile is inserted into the horizontal part of the L-shaped mounting block and fixedly mounted on the counterweight unit, and the π-shaped stopper is mounted on the counterweight unit via the buffer spring;

[0025] The horizontal adjustment sling comprises:

[0026] Initial lifting state: the special-shaped beam is arranged horizontally, the main suspension rod is perpendicular to the special-shaped beam, and one side of the main suspension rod overlaps and limits the position with the π-shaped stopper;

[0027] Star-mounted state: the special-shaped beam is arranged vertically, at which time the main suspension rod is parallel to the special-shaped beam, and the other side of the main suspension rod overlaps and limits the vertical part of the L-shaped mounting block.

[0028] Preferably, a suspension point adjustment assembly is installed on the top of the main suspension rod, and the suspension point adjustment assembly includes a suspension point nut, an adjustment screw, an annular block and a fixed end cover;

[0029] The annular block is rotatably mounted on the top of the main boom via an upper rotating shaft, an adjusting screw is provided in the annular block, and the end of the annular block is closed by a fixed end cover;

[0030] The hanging point nut is threadably connected to the adjusting screw rod, and the top of the hanging point nut is used to connect to the mounting surface on the star.

[0031] Preferably, the mounting claw and the lifting arm, and the lifting arm and the special-shaped beam are connected by threads, and an L-shaped reinforcement is provided between the mounting claw and the lifting arm.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The present invention has a simple structure and is easy to operate. It adopts a modular design of a load installation frame and a counterweight unit. The installation frame can be adaptively designed according to different loads to improve the versatility of the sling. The overturning operation can be completed through the coordination of the boom assembly, the counterweight unit and the lifting device to achieve continuous angle conversion from the initial horizontal lifting state of the load to the vertical installation state, and is suitable for various installation conditions such as installation and disassembly of the load on the horizontal plane, inclined plane and vertical plane.

[0034] 2. The present invention adopts the technical means of controlling the flipping of the main boom with a hand chain hoist, which can improve the stability of large loads during flipping, reduce the force on the main boom, and improve the safety of load hoisting.

[0035] 3. The counterweight unit of the present invention is adjusted in a direction perpendicular to the load installation surface, which does not affect other products in the area around the load installation surface and is suitable for the installation of loads with high-density layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 It is a structural schematic diagram of the present invention under the main viewing angle;

[0039] Figure 3 It is a schematic diagram of the structure of the present invention from a side view angle.

[0040] The figure shows:

[0041] Upper suspension arm 1 Counterweight 18

[0042] L-shaped reinforcement 2 Retractable mounting base plate 19

[0043] Upper mounting claw 3 Screw support assembly 20

[0044] Right mounting claw 4 Lifting point nut 21

[0045] Right suspension arm 5 Adjustment screw 22

[0046] Left mounting claw 6 Fixed end cap 23

[0047] Left lifting arm 7 Upper shaft 24

[0048] Special-shaped beam 8 Ring block 25

[0049] Main boom 9 Chain connecting block 26

[0050] Counterweight frame 10 Lower rotating shaft 27

[0051] Support end cap 11 butterfly nut 28

[0052] Hand chain hoist 12 Fixed pile 29

[0053] Lifting chain 13 L-type mounting block 30

[0054] Flange type nut 14 Mounting bracket 31

[0055] Trapezoidal screw 15 Buffer spring 32

[0056] Guide rail assembly 16 π-type stopper 33

[0057] Handwheel 17 DETAILED DESCRIPTION

[0058] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0059] The present invention discloses a high-precision horizontal adjustment sling for large satellite payloads that can be flipped over. The installation frame can be adaptively designed according to different loads, thereby improving the versatility of the sling and being able to achieve continuous angular conversion from an initial horizontal lifting state of the load to a vertical satellite installation state, and is adaptable to various satellite installation conditions such as installation and disassembly of the load on a horizontal plane, an inclined plane, and a vertical plane.

[0060] According to the large satellite payload disclosed in the present invention, the high-precision horizontal adjustment hoist can be turned over, such as Figure 1-3 As shown, it includes a load installation frame, a counterweight unit, a boom assembly and a lifting device, wherein the load installation frame includes a special-shaped beam 8 and a mounting claw installed on one side of the special-shaped beam 8; the mounting claw is used to install an external satellite payload, and the mounting point position on the mounting claw matches the hoisting interface hole position of the external satellite payload;

[0061] A counterweight unit is installed on the other side of the special-shaped beam 8, the bottom of the boom assembly is rotatably installed on the side of the counterweight unit, the lifting equipment is installed on the counterweight unit, and the lifting equipment is connected to the top of the boom assembly, and the top of the boom assembly is used to connect to the mounting surface on the star. The lifting equipment includes a hand chain hoist 12 and a lifting chain 13, the hand chain hoist 12 is installed on the side of the counterweight unit where the boom assembly is not installed through a mounting bracket 31, and is connected to the top of the boom assembly through the lifting chain 13, preferably, the hand chain hoist 12 is installed on the counterweight frame 10 by threading through the mounting bracket 31, and the hand chain hoist lifting chain 13 is stored in a chain storage bag.

[0062] The mounting claws include an upper mounting claw 3, a right mounting claw 4 and a left mounting claw 6; the upper mounting claw 3 is mounted on the special-shaped beam 8 through an upper lifting arm 1, the right mounting claw 4 is mounted on the special-shaped beam 8 through a right lifting arm 5, and the left mounting claw 6 is mounted on the special-shaped beam 8 through a left lifting arm 7;

[0063] The upper mounting claw 3, the right mounting claw 4 and the left mounting claw 6 are all provided with mounting parts, the mounting parts correspond to the mounting interface holes of the external satellite payload, and the mounting parts are connected to the external satellite payload by screw connection. Preferably, the mounting claw and the lifting arm, and the lifting arm and the special-shaped beam 8 are all connected by threads, and an L-shaped reinforcement member 2 is provided between the mounting claw and the lifting arm.

[0064] In a preferred embodiment of the present invention, the upper surface of the special-shaped beam 8 is connected to the counterweight unit by threading, and the lower surface is connected to the load installation frame by threading. One end of the three lifting arms is installed on the special-shaped beam 8 by threading, and the other end is installed with three mounting claws and two L-shaped reinforcements 2 by threading. The mounting claws are designed according to the load lifting interface hole position and are connected to the load by threading, so as to realize the modular design of the lifting product interface and the counterweight adjustment. The installation frame can be adaptively designed according to different loads to improve the versatility of the lifting equipment. Furthermore, the special-shaped beam 8, upper lifting arm 1, upper mounting claw 3, L-shaped reinforcement 2, right lifting arm 5, right mounting claw 4, left lifting arm 7, and left mounting claw 6 are all made of 2A12T4 aluminum alloy material, and the mounting screw holes are all installed with wire screw sleeves, and the parts are anodized in natural color.

[0065] The counterweight unit includes a circular mounting base plate 19, a counterweight block 18, a counterweight frame 10 and a screw-nut transmission mechanism; one side of the circular mounting base plate 19 is fixedly mounted on the special-shaped beam 8, and the counterweight frame 10 is mounted on the other side of the circular mounting base plate 19. The counterweight frame 10 is internally mounted with a screw-nut transmission mechanism along the normal direction of the circular mounting base plate 19, and the counterweight block 18 is movably mounted on the screw-nut transmission mechanism. By arranging the counterweight block 18 in a direction perpendicular to the load mounting surface, other products in the area around the load mounting surface are not affected, and it is suitable for load installation conditions with high-density layout.

[0066] The screw nut transmission mechanism includes a support end cover 11, a guide rail assembly 16, a trapezoidal screw 15, a screw support assembly 20, a flange nut 14 and a handwheel 17; the support end cover 11 is installed at one end of the counterweight frame 10 away from the circular mounting base plate 19, and the handwheel 17 is installed on the support end cover 11;

[0067] The guide rail assembly 16 and the trapezoidal screw rod 15 are both installed inside the counterweight frame 10 along the normal direction of the circular mounting base plate 19. One end of the trapezoidal screw rod 15 is installed on the inner wall of the counterweight frame 10 through the screw rod support assembly 20, and the other end of the trapezoidal screw rod 15 is connected to the handwheel 17. The flange-type nut 14 is fixedly installed on the counterweight block 18 and is screwed to the trapezoidal screw rod 15.

[0068] In a preferred embodiment of the present invention, the counterweight frame 10 is installed on the upper surface of the special-shaped beam 8 by threading, and the end is installed with a support end cap 11, and the guide rail assembly 16 is installed on the inner wall of the counterweight frame 10. The counterweight block 18 is fixed to the slider of the guide rail assembly 16 by screw connection, which plays a role in moving and guiding. The trapezoidal screw 15 drives the counterweight block 18 to move through the flange nut 14. One end of the trapezoidal screw 15 is fixed to the support end cap 11, and the other end is installed on the screw support assembly 20. The handwheel 17 is installed on the other end of the trapezoidal screw 15 outside the support end cap 11. The trapezoidal screw 15 is rotated by hand by the handwheel 17, thereby driving the counterweight block 18 to move in the counterweight frame 10, adjusting the mass characteristic parameters of the sling to adapt to the center of mass position of the empty and full load states, and maintaining balance. The counterweight frame 10 is processed with Q345 material, and the parts are subjected to black surface treatment.

[0069] like Figure 3 As shown, the counterweight unit includes two sets of counterweight blocks 18, a counterweight frame 10 and a screw nut transmission mechanism, and the two sets of counterweight blocks 18, counterweight frames 10 and screw nut transmission mechanisms are installed side by side on the circular mounting base plate 19; the suspension rod assembly can be rotatably set between the two counterweight frames 10.

[0070] The boom assembly includes a lower rotating shaft 27, a main boom 9, an upper rotating shaft 24, a chain connecting block 26 and a boom locking and limiting assembly; a lower rotating shaft 27 is provided at the bottom of the main boom 9, and is rotatably mounted on the counterweight unit through the lower rotating shaft 27; an upper rotating shaft 24 is provided at the top of the main boom 9, and is rotatably connected to the chain connecting block 26 through the upper rotating shaft 24; the boom locking and limiting assembly is installed between the bottom of the main boom 9 and the counterweight unit, and is used to limit the main boom 9. Preferably, one end of the chain connecting block 26 is installed on the upper rotating shaft 24, and the other end is connected to the lifting chain 13 of the hand winch through a shackle, so as to control the stable rotation of the main boom 9 and reduce the stress on the rotating shaft.

[0071] The suspension rod locking and limiting assembly includes a butterfly nut 28, a fixing pile 29, an L-shaped mounting block 30, a buffer spring 32 and a π-shaped stopper 33; the fixing pile 29 is inserted into the horizontal portion of the L-shaped mounting block 30 and fixedly mounted on the counterweight unit, and the π-shaped stopper 33 is mounted on the counterweight unit through the buffer spring 32;

[0072] The horizontal adjustment hoist includes an initial lifting state and a star-mounting state. When in the initial lifting state, the special-shaped beam 8 is horizontally arranged, and the main suspension rod 9 is perpendicular to the special-shaped beam 8, and one side of the main suspension rod 9 is overlapped and limited with the π-shaped stopper 33; when in the star-mounting state, the special-shaped beam 8 is vertically arranged, and the main suspension rod 9 is parallel to the special-shaped beam 8, and the other side of the main suspension rod 9 is overlapped and limited with the vertical part of the L-shaped mounting block 30.

[0073] A hanging point adjustment assembly is installed on the top of the main boom 9, and the hanging point adjustment assembly includes a hanging point nut 21, an adjusting screw 22, an annular block 25 and a fixed end cover 23; the annular block 25 is rotatably installed on the top of the main boom 9 through an upper rotating shaft 24, an adjusting screw 22 is provided in the annular block 25, and the end of the annular block 25 is closed by a fixed end cover 23; the hanging point nut 21 is threadedly connected to the adjusting screw 22, and the top of the hanging point nut 21 is used to connect to the mounting surface on the star.

[0074] The present invention completes the flipping operation through the cooperation of the boom assembly, the counterweight unit and the hand chain hoist 12, realizes the continuous angle conversion from the initial horizontal lifting state of the load to the vertical satellite installation state, and adapts to various satellite installation conditions such as the load installation and removal on the horizontal plane, inclined plane and vertical plane. By adjusting the counterweight block 18 of the counterweight unit, the chain length of the hand chain hoist 12, and the lifting point adjustment assembly, the high-precision horizontal adjustment function under the conditions of no load and full load of the hoist is realized, meeting the requirements of large satellite payload installation.

[0075] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0076] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A large satellite payload reversible high-precision horizontal adjustment sling, characterized in that: It comprises a load installation frame, a counterweight unit, a suspension rod assembly and a lifting device, wherein the load installation frame comprises a special-shaped beam (8) and a mounting claw installed on one side of the special-shaped beam (8); The mounting claw is used to mount an external satellite payload, and the mounting point on the mounting claw matches the hole position of the hoisting interface of the external satellite payload; A counterweight unit is installed on the other side of the special-shaped beam (8), the bottom of the boom assembly is rotatably installed on the side of the counterweight unit, the lifting equipment is installed on the counterweight unit, and the lifting equipment is connected to the top of the boom assembly, and the top of the boom assembly is used to connect the lifting equipment.

2. The large satellite payload flippable high-precision horizontal adjustment sling according to claim 1 is characterized in that: The mounting claw comprises an upper mounting claw (3), a right mounting claw (4) and a left mounting claw (6); The upper mounting claw (3) is mounted on the special-shaped beam (8) via an upper lifting arm (1), the right mounting claw (4) is mounted on the special-shaped beam (8) via a right lifting arm (5), and the left mounting claw (6) is mounted on the special-shaped beam (8) via a left lifting arm (7); The upper mounting claw (3), the right mounting claw (4) and the left mounting claw (6) are all provided with mounting parts, the mounting parts correspond to the hoisting interface holes of the external satellite payload, and the mounting parts are connected to the external satellite payload by screw connection.

3. The large satellite payload flippable high-precision horizontal adjustment sling according to claim 1 is characterized in that: The counterweight unit comprises a circular mounting base plate (19), a counterweight block (18), a counterweight frame (10) and a lead screw nut transmission mechanism; One side of the circular mounting base plate (19) is fixedly mounted on the special-shaped beam (8), and a counterweight frame (10) is mounted on the other side of the circular mounting base plate (19). A lead screw and nut transmission mechanism is mounted inside the counterweight frame (10) along the normal direction of the circular mounting base plate (19), and the counterweight block (18) is movably mounted on the lead screw and nut transmission mechanism.

4. The large satellite payload flippable high-precision horizontal adjustment sling according to claim 3 is characterized in that: The screw nut transmission mechanism comprises a support end cover (11), a guide rail assembly (16), a trapezoidal screw (15), a screw support assembly (20), a flange nut (14) and a hand wheel (17); A support end cover (11) is installed at one end of the counterweight frame (10) away from the circular mounting base plate (19), and a hand wheel (17) is installed on the support end cover (11); The guide rail assembly (16) and the trapezoidal lead screw (15) are both installed inside the counterweight frame (10) along the normal direction of the circular mounting base plate (19); one end of the trapezoidal lead screw (15) is installed on the inner wall of the counterweight frame (10) through a lead screw support assembly (20); and the other end of the trapezoidal lead screw (15) is connected to a hand wheel (17); The flange-type nut (14) is fixedly mounted on the counterweight (18) and is threadedly connected to the trapezoidal lead screw (15).

5. The large satellite payload flippable high-precision horizontal adjustment sling according to claim 3 is characterized in that: The counterweight unit comprises two sets of counterweight blocks (18), a counterweight frame (10) and a screw nut transmission mechanism, and the two sets of counterweight blocks (18), the counterweight frame (10) and the screw nut transmission mechanism are installed side by side on the circular mounting base plate (19); The boom assembly is rotatably arranged between two counterweight frames (10).

6. The large satellite payload flippable high-precision horizontal adjustment sling according to claim 1 is characterized in that: The lifting equipment comprises a hand chain hoist (12) and a lifting chain (13); the hand chain hoist (12) is installed on a side of the counterweight unit where the boom assembly is not installed via a mounting bracket (31), and is connected to the top of the boom assembly via the lifting chain (13).

7. The large satellite payload flippable high-precision horizontal adjustment sling according to claim 1 is characterized in that: The boom assembly comprises a lower rotating shaft (27), a main boom (9), an upper rotating shaft (24), a chain connecting block (26) and a boom locking and limiting assembly; A lower rotating shaft (27) is provided at the bottom of the main boom (9), and is rotatably mounted on the counterweight unit via the lower rotating shaft (27); an upper rotating shaft (24) is provided at the top of the main boom (9), and is rotatably connected to a chain connecting block (26) via the upper rotating shaft (24); The boom locking and limiting assembly is installed between the bottom of the main boom (9) and the counterweight unit, and is used to limit the main boom (9).

8. The large satellite payload flippable high-precision horizontal adjustment sling according to claim 7 is characterized in that: The suspension rod locking and limiting assembly comprises a butterfly nut (28), a fixing pile (29), an L-shaped mounting block (30), a buffer spring (32) and a π-shaped stopper (33); The fixing pile (29) is inserted into the horizontal part of the L-shaped mounting block (30) and fixedly mounted on the counterweight unit, and the π-shaped stopper (33) is mounted on the counterweight unit via the buffer spring (32); The horizontal adjustment sling comprises: Initial lifting state: the special-shaped beam (8) is arranged horizontally, at which time the main suspension rod (9) is perpendicular to the special-shaped beam (8), and one side of the main suspension rod (9) overlaps and limits the position with the π-shaped stopper (33); Star-mounted state: the special-shaped beam (8) is arranged vertically, and the main suspension rod (9) is parallel to the special-shaped beam (8), and the other side of the main suspension rod (9) overlaps and limits the vertical part of the L-shaped installation block (30).

9. The large satellite payload flippable high-precision horizontal adjustment sling according to claim 7 is characterized in that: A suspension point adjustment assembly is installed on the top of the main suspension rod (9), and the suspension point adjustment assembly comprises a suspension point nut (21), an adjustment screw rod (22), an annular block (25) and a fixed end cover (23); The annular block (25) is rotatably mounted on the top of the main suspension rod (9) via an upper rotating shaft (24), an adjusting screw (22) is provided in the annular block (25), and the end of the annular block (25) is closed by a fixed end cover (23); The suspension point nut (21) is threadably connected to the adjusting screw rod (22), and the top of the suspension point nut (21) is used to connect to the mounting surface on the satellite.

10. The large satellite payload flippable high-precision horizontal adjustment sling according to claim 2, characterized in that: The mounting claw and the lifting arm, and the lifting arm and the special-shaped beam (8) are all connected via threads, and an L-shaped reinforcement member (2) is provided between the mounting claw and the lifting arm.

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