Movable maintenance operation platform for on-orbit maintenance of manned spacecraft

Abstract

The invention discloses a movable maintenance operation platform used for on-orbit maintenance of a manned spacecraft. The movable maintenance operation platform comprises a table top, sliding grooves, screw bases, nylon hasps, nanometer micro suction glue, retaining rings, object limiting belts, a quick-mounting base, a joint arm device and a clamping mechanism. Wherein the sliding groove is formed in the table top, and the screw base is placed in the sliding groove of the table top, can move in the sliding groove and can be fixed to a certain position of the sliding groove through a screw on the back face of the table top; the nylon hasp and the nano micro-suction glue are adhered to the surface of the table top through the back glue; the object limiting belt is installed on the table top through a retaining ring arranged on the back face of the table top. The fast-assembly base is arranged in the center of the table board; one end of the articulated arm device is detachably connected with the quick-mounting base; and the other end is connected with the clamping mechanism. The platform can be adjusted and fixed at multiple angles, multiple platforms can be combined for use, in-orbit adjustment to a proper posture is facilitated, and the maintenance operation efficiency is improved.

Description

Technical Field

[0001] The invention relates to a movable maintenance operation platform used for on-orbit maintenance of a manned spacecraft, belonging to the technical field of maintenance. Background Art

[0002] Manned spacecraft have a long on-orbit operating life, high reliability requirements, and need to be upgraded on-orbit. At the same time, manned spacecraft are affected by factors such as size, weight, space environment, and ground-to-space support. Simply achieving the above requirements through long-life and reliability design will not provide engineering real-time performance.

[0003] The Mir space station has an in-orbit lifespan of 15 years, and the International Space Station will have been in orbit for 26 years by 2024. Both of the above manned spacecraft have carried out a large number of maintenance activities during their long-term operation to replace faulty and expired products and restore system functions. Therefore, maintenance is an essential key measure to ensure the normal in-orbit operation of long-term in-orbit spacecraft.

[0004] Due to the weightlessness in orbit, spare parts, products to be repaired, accessories and repair tools need to be temporarily fixed; after the equipment to be repaired is removed from the installation location, if offline testing or internal board repair is required, the equipment must be stabilized and fixed. Therefore, an operating platform suitable for on-orbit maintenance of manned spacecraft is needed.

[0005] The existing maintenance operation platform on the ground can be used as a reference, but due to the weightlessness environment on orbit and the space and volume constraints of manned spacecraft, it has the following disadvantages:

[0006] (1) Existing ground maintenance operation platforms are designed to work in a ground gravity environment. To ensure stable load-bearing, they are generally heavy and large in size. They cannot meet the weight and volume constraints required for traveling with cargo spacecraft, or for on-orbit storage and use.

[0007] (2) The existing ground maintenance operation platform does not take into account mobile installation in a weightless state and cannot meet the needs of carrying out maintenance operations in different areas on orbit. Summary of the invention

[0008] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art and to provide a movable maintenance operation platform for on-orbit maintenance of manned spacecraft, thereby providing conditions for astronauts to carry out on-orbit maintenance.

[0009] The technical solution of the present invention is:

[0010] The present invention discloses a movable maintenance operation platform for on-orbit maintenance of manned spacecraft, comprising: a table, a slide groove, a screw seat, a Velcro, a nano-micro-adhesive, a buckle, a limiting belt, a quick-release base, a joint arm device and a clamping mechanism; wherein,

[0011] The slide is placed on the table top, and the screw seat is placed in the slide of the table top, which can be moved in the slide and can be fixed at any position of the slide by screws on the back of the table top;

[0012] Velcro and nano-micro-adhesive are bonded to the countertop surface via adhesive backing;

[0013] The object limiting belt is installed on the table top through a buckle ring arranged on the back of the table top;

[0014] The quick-release base is placed in the center of the countertop;

[0015] One end of the articulated arm device is detachably connected to the quick-release base; the other end is connected to the clamping mechanism.

[0016] Furthermore, in the above-mentioned operating platform, the table top is rectangular, with a length of not less than 400mm and a width of not less than 300mm, and can be used singly or in multiples; the edge of the table top is rounded by not less than R2.5mm, and the four corners of the rectangle are arcs of not less than R20.

[0017] Furthermore, in the above-mentioned operating platform, two slide grooves are provided on the front side of the table top along orthogonal directions.

[0018] Furthermore, in the above-mentioned operating platform, one end of the slide groove is a rectangular through hole with an enlarged size to accommodate a screw seat; the shape of the screw seat is clearance-matched with the cross-sectional size of the slide groove; the screw seat can move in the slide groove; and each slide groove is equipped with screw seats of various specifications.

[0019] Furthermore, in the above-mentioned operating platform, the screw seat has a threaded hole of corresponding specifications on the front side of the table top, and a hand wheel is provided on the back side for fixing the position of the screw seat in the slide groove.

[0020] Furthermore, in the above-mentioned operating platform, two Velcro straps are arranged in parallel along a diagonal line on the front of the table top for fixing devices with Velcro straps on the surface; and two nano-micro-adhesive straps are arranged in parallel along another diagonal line for fixing devices with smoother surfaces.

[0021] Furthermore, in the above-mentioned operating platform, four buckle rings are arranged at the four corners of the back of the table top; the limiting belt is made of elastic material and has an adjustable length, with hooks at both ends, and the hooks hook the buckle rings to achieve the binding and fixation of the equipment on the operating platform; a rectangular quick-release base is installed in the center of the back of the table top.

[0022] Furthermore, in the above-mentioned operating platform, the articulated arm device comprises: a quick-release joint, a ball head a, an articulated arm, a joint, a ball head b and a plurality of hand wheels; wherein,

[0023] The articulated arm comprises two arm rods with a length not less than half the size of the long side of the table top, which are connected by a joint in the middle; the joint can rotate freely 360 degrees, and a handwheel is arranged on the joint outer sleeve, and a stable connection is achieved through a threaded structure, and the angle of the joint is fixed by tightening the handwheel; the two ends of the articulated arm are respectively connected to a ball head a and a ball head b, and both ball heads a and b are freely rotatable ball heads; handwheels are arranged on the outer sleeves of ball heads a and b, and a stable connection is achieved through a threaded structure, and the handwheel is tightened so that the threaded structure supports the ball head to fix the angle; ball head a is connected to a quick-release joint, and the quick-release joint fastens the quick-release base; a handwheel is arranged on the side of the quick-release joint, and a stable connection is achieved through a threaded structure, and the handwheel is tightened so that the threaded structure clamps the quick-release base to achieve tightening.

[0024] Furthermore, in the above-mentioned operating platform, the clamping mechanism includes a knob, a fixed jaw, a movable jaw and a guide slot; wherein the fixed jaw and the movable jaw have a semicircular arc structure, and the movable jaw limits the freedom of movement with the help of the guide slot to realize the movement of the movable jaw along the clamping direction; the side of the movable jaw away from the fixed jaw is a wedge-shaped inclined surface; when the movable jaw and the fixed jaw move to a closed state, the movable jaw is pushed to press the armrest through the wedge-shaped inclined surface to achieve a firm clamping of the clamped object; the knob is rotated to open the fixed jaw and the movable jaw, and after moving to the clamped object, the knob is rotated to make the fixed jaw and the movable jaw clamp the armrest; anti-slip material is pasted on the places where the fixed jaw and the movable jaw contact the clamped object to ensure reliable clamping; the angle a of the wedge-shaped inclined surface is greater than 85 degrees.

[0025] Furthermore, in the above-mentioned operating platform, the ball head a and the ball head b have the same structure; the ball head a includes a ball pair and a sphere; the ball pair is connected to a hand wheel; the friction between the ball pair and the sphere is adjusted by tightening the threaded structure of the hand wheel, and a flexible cushion is arranged between the ball pair and the sphere to increase the friction.

[0026] The beneficial effects of the present invention and the prior art are:

[0027] (1) The present invention provides a variety of fixing methods such as screw installation, Velcro, nano-micro-adhesive and limiting tape, which solves the problem of fixing maintenance equipment in the on-orbit weightless environment and can adapt to the installation and fixing requirements of different types of equipment.

[0028] (2) The present invention takes into account the weightlessness environment on orbit, the volume and weight constraints of upward transportation and on-orbit storage. The volume and weight occupied by the present invention are relatively small, and the internal components can be disassembled and assembled, which provides convenience for upward transportation and is also easier to use on orbit.

[0029] (3) The present invention adopts a clamping mechanism that can be clamped and fixed on any armrest in a manned spacecraft. The fixation is convenient and has a portable and movable function, which is convenient for astronauts to fix and use in a suitable position.

[0030] (4) The arm joint and ball head of the present invention can be rotated, and the table top can be adjusted to a suitable position and angle, thereby improving the efficiency of astronauts' use in orbit.

[0031] (5) The maintenance operation platform of the present invention can be clamped on any hard handrail in the cabin of a manned spacecraft. The clamping mechanism can be clamped by a wedge-shaped structure, but not limited to it. The handrail is clamped by closing the clamping claws, and then the clamping device and the handrail are firmly locked by a small-angle wedge-shaped inclined surface, thereby meeting the requirements of astronauts' on-orbit movement and use.

[0032] (6) The platform of the present invention can provide multiple angle adjustments and fixation, and multiple platforms can be used in combination. The ball head device uses a flexible cushion between the ball pairs for direct contact, which can reduce the contact stiffness and increase the range of change of the connection stiffness between the ball pairs, making it easy to adjust to a suitable posture on the track and improve the efficiency of maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the joint arm structure of the present invention.

[0034] Figure 2 This is a schematic diagram of the front structure of the table of the present invention.

[0035] Figure 3 This is a schematic diagram of the back structure of the table of the present invention.

[0036] Figure 4 This is a schematic diagram of the cross-sectional shape of the chute of the present invention.

[0037] Figure 5 Schematic diagram of the ball joint of the present invention

[0038] Figure 6 Schematic diagram of the fixed clamp and the movable clamp of the present invention DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0040] The present invention discloses a movable maintenance operation platform for on-orbit maintenance of manned spacecraft, comprising: a table 1, a slide slot 2, a screw seat 3, a Velcro 4, a nano-micro-adhesive 5, a buckle 6, a limiting belt 7, a quick-release base 8, a joint arm device and a clamping mechanism 14; wherein,

[0041] The slide groove 2 is placed on the table top 1, and the screw seat 3 is placed in the slide groove 2 of the table top 1, which can be moved in the slide groove 2 and can be fixed at any position of the slide groove 2 by screws on the back of the table top 1;

[0042] The Velcro 4 and the nano-micro-adhesive 5 are bonded to the surface of the table 1 by means of adhesive backing;

[0043] The object limiting belt 7 is installed on the table top 1 through a buckle 6 arranged on the back of the table top 1;

[0044] The quick-release base 8 is placed at the center of the table 1;

[0045] One end of the articulated arm device is detachably connected to the quick-release base 8 ; the other end is connected to the clamping mechanism 14 .

[0046] Preferably, the table top 1 is rectangular, with a length of not less than 400 mm and a width of not less than 300 mm, and can be used singly or in multiples; the edge of the table top 1 is rounded by not less than R2.5 mm, and the four corners of the rectangle are arcs of not less than R20.

[0047] Preferably, two slide grooves 2 are provided on the front side of the table top 1 along orthogonal directions.

[0048] Preferably, one end of the slide groove 2 is a rectangular through hole with an enlarged size to accommodate the screw seat 3; the shape of the screw seat 3 is clearance-matched with the cross-sectional size of the slide groove 2; the screw seat 3 can move in the slide groove 2; and each slide groove 2 is equipped with screw seats 3 of various specifications.

[0049] Preferably, the screw seat 3 has a threaded hole of corresponding specifications on the front side of the table top 1 , and a hand wheel is provided on the back side for fixing the position of the screw seat 3 in the slide groove 2 .

[0050] Preferably, two Velcro straps 4 are arranged in parallel along a diagonal line on the front side of the table top 1 for fixing devices with Velcro straps on the surface; and two nano-micro-adhesives 5 are arranged in parallel along another diagonal line for fixing devices with smoother surfaces.

[0051] Preferably, four buckle rings 6 are arranged at the four corners of the back of the table top 1; the limiting belt 7 is made of elastic material and has an adjustable length, with hooks at both ends, which hook the buckle rings 6 to achieve the binding and fixation of the equipment on the operating platform; a rectangular quick-release base 8 is installed in the center of the back of the table top 1.

[0052] Preferably, the articulated arm device comprises: a quick-release joint 9, a ball head a 10, an articulated arm 11, a joint 12, a ball head b 13 and a plurality of hand wheels 15; wherein,

[0053] The articulated arm 11 comprises two arm rods with a length not less than half the size of the long side of the table top, which are connected in the middle by a joint 12; the joint 12 can rotate freely 360 degrees, and a handwheel 15 is arranged on the outer sleeve of the joint 12, and a firm connection is achieved through a threaded structure, and the angle of the joint 12 is fixed by tightening the handwheel 15; the two ends of the articulated arm 11 are respectively connected to a ball head a 10 and a ball head b 13, and both the ball head a 10 and the ball head b 13 are freely rotatable ball heads; handwheels 15 are arranged on the outer sleeves of the ball head a 10 and the ball head b 13, and a firm connection is achieved through a threaded structure, and the handwheel 15 is tightened so that the threaded structure supports the ball head to fix the angle; the ball head a 10 is connected to the quick-release joint 9, and the quick-release joint 9 fastens the quick-release base 8; a handwheel 15 is arranged on the side of the quick-release joint 9, and a firm connection is achieved through a threaded structure, and the handwheel 15 is tightened so that the threaded structure clamps the quick-release base 8 to achieve fastening.

[0054] Preferably, the clamping mechanism 14 includes a knob 17, a fixed jaw 18, a movable jaw 19 and a guide slot 20; wherein the fixed jaw 18 and the movable jaw 19 have a semicircular arc structure, and the movable jaw 19 limits the freedom of movement with the help of the guide slot 20, so as to realize the movement of the movable jaw 19 along the clamping direction; the side of the movable jaw 19 away from the fixed jaw 18 is a wedge-shaped inclined surface 21; when the movable jaw 19 and the fixed jaw 18 move to a closed state, the movable jaw 19 is pushed to press the handrail through the wedge-shaped inclined surface 21 to achieve a firm clamping of the clamped object; the knob 17 is rotated to open the fixed jaw 18 and the movable jaw, and after moving to the clamped object, the knob 17 is rotated to clamp the fixed jaw 18 and the movable jaw 19 to clamp the handrail; anti-slip material is pasted on the fixed jaw 18 and the movable jaw 19 where they contact the clamped object to ensure reliable clamping; the bevel angle a of the wedge-shaped inclined surface 21 is greater than 85 degrees.

[0055] Preferably, the ball head a10 and the ball head b13 have the same structure; the ball head a10 includes a ball pair 101 and a round ball 102; the ball pair 101 is connected to a hand wheel 15; the friction between the ball pair 101 and the round ball 102 is adjusted by tightening the threaded structure of the hand wheel 15, and a flexible cushion 16 is provided between the ball pair 101 and the round ball 102 to increase the friction. Figure 5 shown.

[0056] Example

[0057] like Figure 1 , Figure 2As shown, the manned spacecraft on-orbit movable maintenance operation platform described in the present invention includes: a table top 1, a slide groove 2, a screw seat 3, a nylon fastener 4, a nano-micro-adhesive 5, a buckle 6, a limiting belt 7, a quick-release base 8, a quick-release joint 9, a ball head a10, an articulated arm 11, a joint 12, a ball head b13, and a clamping mechanism 14. The screw seat 3 is placed in the slide groove 2 of the table 1, can move in the slide groove 2, and can be fixed at any position of the slide groove 2 by the screws on the back; the nylon buckle 4 and the nano micro-adhesive 5 are bonded to the surface of the table 1 by the back glue; the limiting belt 7 is installed on the table 1 through the buckle 6 on the back of the table 1; the quick-release base 8 is installed on the back of the table 1 by screws; the quick-release base 8 can be embedded in the quick-release joint 9 and tightened and fixed by the hand wheel 15 at the quick-release joint 9; the quick-release joint 9 is tightened on the ball head a10 end of the joint arm 11 by threads; the joint arm 11 is composed of two arm sections, connected in the middle by a joint 12, and the two ends are ball heads a10 and ball heads b13; the clamping mechanism 14 is connected to the ball head b13 by threads. The table 1 and the joint arm 11 can be detached and separated, saving the storage space of the uplink and on-track.

[0058] like Figure 2 As shown, the table 1 is rectangular, so that multiple operating platforms can be assembled and used. The length of the table 1 is not less than 400mm, the width is not less than 300mm, and the size of the single or multiple assembly covers the size of the existing manned spacecraft equipment on-orbit maintenance operation. The edge of the table 1 is rounded by not less than R2.5mm, and the four corners of the rectangle are not less than R20 arcs to avoid scratches during astronaut operation.

[0059] like Figure 2 , Figure 3 As shown, the front of the table 1 has two slide grooves 2 along the orthogonal direction, and the cross-sectional shape of the slide groove 2 is as follows: Figure 4 One end of the chute 2 is a rectangular through hole with an increased size to accommodate the screw seat 3. The shape of the screw seat 3 is in clearance with the cross-sectional size of the chute 2, and can be moved in the chute according to the size of the equipment to be fastened and installed; each chute 2 is equipped with one screw seat 3 of M4 and M5 specifications, and other screw seats 3 of other specifications can be added as needed; the screw seat 3 has a corresponding specification threaded hole on the front side of the table 1, and a hand wheel on the back side, which is used to fix the position of the screw seat in the chute.

[0060] like Figure 2 As shown, two Velcro straps 4 are arranged in parallel along a docking line on the front side of the table top 1, which can be used to fix devices with Velcro straps on the surface; two nano-micro-adhesives 5 are arranged in parallel along another diagonal line, which can be used to fix devices with smoother surfaces.

[0061] like Figure 3As shown, four buckles 6 are arranged at the four corners of the back of the table 1. The limiting belt 7 is made of a material with a certain elasticity and is adjustable in length. There are hooks at both ends. The hooks hook the buckles 6 to achieve the equipment on the operating platform. A rectangular quick-release base 8 is installed in the center of the back of the table 1 by screws.

[0062] like Figure 1 As shown, the articulated arm 11 includes two arm rods with a length not less than half the size of the long side of the table, which are connected by a joint 12 in the middle; the joint 12 can rotate freely 360 degrees, and the angle is fixed by tightening the handwheel. Both ends of the articulated arm 11 are freely rotatable ball heads, and the angles are fixed by tightening the studs with handwheels. The ball head a10 is connected to a quick-release connector 9 through a thread, and the quick-release connector 9 can be fastened to the quick-release base 8 and tightened by the side handwheel; the ball head b13 is connected to a clamping mechanism 14 through a thread, and the two clamping claws can be opened by rotating the knob 17 of the clamping mechanism 14. After moving to the handrail at the desired position, the knob 17 is rotated to make the clamping claws clamp the handrail. Anti-slip material is pasted inside the clamp to ensure reliable clamping.

[0063] like Figure 6 As shown, the clamping mechanism can be clamped by not limited to a wedge-shaped structure, and two clamping jaws with a semicircular arc structure are used, one is a fixed clamping jaw 18, and the other is a movable clamping jaw 19. The movable clamping jaw 19 is limited in freedom of movement by means of a guide groove 20 to achieve movement of the movable clamping jaw 19 along the clamping direction. When the movable clamping jaw 19 and the fixed clamping jaw 18 move to a closed state, the movable clamping jaw 19 is pushed to press the handrail through a small-angle wedge-shaped inclined surface 21, which generally does not exceed 5 degrees, to achieve a firm clamping of the clamping device and the handrail.

[0064] The ball head device relies on a threaded structure to adjust the friction between the ball pairs. Different from the traditional ball head metal structure, the ball head device uses a flexible cushion between the ball pairs for direct contact, which can reduce the contact stiffness and increase the range of variation of the connection stiffness between the ball pairs. By indicating the different rotation angle positions of the threaded structure, ball pairs with different connection stiffness can be set, thereby expanding the scope of use of the ball head device.

[0065] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

[0066] The contents not described in detail in the specification of the present invention belong to the common knowledge of the professionals in this field.

Claims

1. A movable maintenance operation platform for on-orbit maintenance of manned spacecraft, characterized in that: include: A table top (1), a slide groove (2), a screw seat (3), a Velcro (4), a nano-micro-adhesive (5), a buckle (6), a limiting belt (7), a quick-release base (8), an articulated arm device and a clamping mechanism (14); wherein: The slide groove (2) is placed on the table top (1), and the screw seat (3) is placed in the slide groove (2) of the table top (1), and can move in the slide groove (2), and can be fixed at any position of the slide groove (2) by screws on the back of the table top (1); The Velcro (4) and the nano-micro-adhesive (5) are bonded to the surface of the table (1) via the backing adhesive; The limiting belt (7) is installed on the table top (1) via a buckle ring (6) arranged on the back of the table top (1); The quick-release base (8) is placed at the center of the table (1); One end of the articulated arm device is detachably connected to the quick-install base (8); the other end is connected to the clamping mechanism (14).

2. The movable maintenance operation platform for on-orbit maintenance of manned spacecraft according to claim 1, characterized in that: The table top (1) is rectangular, with a length of not less than 400 mm and a width of not less than 300 mm, and can be used singly or in combination; the edge of the table top (1) is chamfered to a radius of not less than R2.5 mm, and the four corners of the rectangle are arcs of not less than R20 mm.

3. The movable maintenance operation platform for on-orbit maintenance of manned spacecraft according to claim 1, characterized in that: The front side of the table top (1) is provided with two slide grooves (2) along orthogonal directions.

4. The movable maintenance operation platform for on-orbit maintenance of manned spacecraft according to claim 1, characterized in that: One end of the slide groove (2) is a rectangular through hole with an enlarged size so as to accommodate the screw seat (3); the shape of the screw seat (3) is clearance-matched with the cross-sectional size of the slide groove (2); the screw seat (3) can move in the slide groove (2); and each slide groove (2) is equipped with screw seats (3) of various specifications.

5. The movable maintenance operation platform for on-orbit maintenance of manned spacecraft according to claim 1, characterized in that: The screw seat (3) has a threaded hole of corresponding specifications on the front side of the table top (1), and a hand wheel is provided on the back side for fixing the position of the screw seat (3) in the slide groove (2).

6. The movable maintenance operation platform for on-orbit maintenance of manned spacecraft according to claim 1, characterized in that: Two Velcro straps (4) are arranged in parallel along a diagonal line on the front of the table top (1) for fixing equipment with Velcro straps on the surface; and two nanometer micro-adhesives (5) are arranged in parallel along another diagonal line for fixing equipment with a smoother surface.

7. The movable maintenance operation platform for on-orbit maintenance of manned spacecraft according to claim 1, characterized in that: Four buckles (6) are arranged at the four corners of the back of the table top (1); the limiting belt (7) is made of elastic material and has an adjustable length. Hooks are provided at both ends. The hooks hook the buckles (6) to achieve the tying and fixing of the equipment on the operating platform; a rectangular quick-release base (8) is installed in the center of the back of the table top (1).

8. The movable maintenance operation platform for on-orbit maintenance of manned spacecraft according to claim 7, characterized in that: The articulated arm device comprises: a quick-release joint (9), a ball head a (10), an articulated arm (11), a joint (12), a ball head b (13) and a plurality of hand wheels (15); wherein: The articulated arm (11) comprises two arm rods, each having a length not less than half the size of the long side of the table, connected in the middle by a joint (12); the joint (12) can freely rotate 360 ​​degrees, a hand wheel (15) is arranged on the outer cover of the joint (12), a firm connection is achieved by a threaded structure, and the angle of the joint (12) is fixed by tightening the hand wheel (15); the two ends of the articulated arm (11) are respectively connected to a ball head a (10) and a ball head b (13), and both the ball head a (10) and the ball head b (13) can freely rotate. A rotatable ball head; a hand wheel (15) is arranged on the outer sleeve of the ball head a (10) and the ball head b (13), and a stable connection is achieved through a threaded structure. The hand wheel (15) is tightened so that the threaded structure supports the ball head at a fixed angle; the ball head a (10) is connected to a quick-release joint (9), and the quick-release joint (9) is fastened to a quick-release base (8); a hand wheel (15) is arranged on the side of the quick-release joint (9), and a stable connection is achieved through a threaded structure. The hand wheel (15) is tightened so that the threaded structure clamps the quick-release base (8) to achieve fastening.

9. The movable maintenance operation platform for on-orbit maintenance of manned spacecraft according to claim 1, characterized in that: The clamping mechanism (14) comprises a knob (17), a fixed clamping jaw (18), a movable clamping jaw (19) and a guide slot (20); wherein the fixed clamping jaw (18) and the movable clamping jaw (19) have a semicircular arc structure, and the movable clamping jaw (19) is limited in freedom of movement by means of the guide slot (20) so as to realize the movement of the movable clamping jaw (19) along the clamping direction; a side of the movable clamping jaw (19) away from the fixed clamping jaw (18) is a wedge-shaped inclined surface (21); between the movable clamping jaw (19) and the fixed clamping jaw (18), a wedge-shaped inclined surface (21) is formed; When the device moves to a closed state, the movable clamping jaw (19) is pushed to press the handrail through the wedge-shaped inclined surface (21) to achieve a firm clamping of the clamped object; the fixed clamping jaw (18) and the movable clamping jaw are opened by rotating the knob (17), and after moving to the clamped object, the knob (17) is rotated to clamp the fixed clamping jaw (18) and the movable clamping jaw (19) to clamp the handrail; anti-slip material is pasted at the contact point between the fixed clamping jaw (18) and the movable clamping jaw (19) with the clamped object to ensure reliable clamping; the bevel angle a of the wedge-shaped inclined surface (21) is greater than 85 degrees.

10. The movable maintenance operation platform for on-orbit maintenance of manned spacecraft according to claim 8, characterized in that: The ball head a (10) and the ball head b (13) have the same structure; the ball head a (10) comprises a ball pair (101) and a round ball (102); the ball pair (101) is connected to a hand wheel (15); the friction force between the ball pair (101) and the round ball (102) is adjusted by tightening the threaded structure of the hand wheel (15); a flexible cushion (16) is arranged between the ball pair (101) and the round ball (102) to increase the friction force.

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