Six-Degree-of-Freedom Position Adjustment Platform for Spacecraft Testing

Abstract

The present invention provides a six-degree-of-freedom position adjustment platform for spacecraft testing, which includes a lifting frame, a flipping assembly, a rotating frame, a left-right adjustment frame, a front-back adjustment frame, and a chassis connected in sequence from top to bottom. The lifting frame is hinged to the flipping assembly, and an adjustment handwheel for moving up and down is installed inside the lifting frame. An adjustment handwheel for flipping is installed between the flipping assembly and the rotating frame, and a connecting rod structure for rotation is installed between the rotating frame and the left-right adjustment frame; an adjustment handwheel for moving left and right is installed between the left-right adjustment frame and the front-back adjustment frame, and an adjustment handwheel for moving back and forth is installed between the front-back adjustment frame and the chassis. A number of auxiliary supports are installed around the chassis. The six-degree-of-freedom position adjustment platform for spacecraft testing described in the present invention is simple to operate, greatly improves the testing efficiency, and improves the safety of lens testing.

Description

Technical Field

[0001] The present invention belongs to the field of aerospace technology, and particularly relates to a six-degree-of-freedom position adjustment platform for spacecraft testing. Background Art

[0002] During the testing process of the lens for a spacecraft camera, the camera lens needs to be adjusted in various directions. Since the camera lens is relatively large, it is inconvenient for manual movement. Therefore, the operation is very difficult and requires multiple people to operate. In addition, the existing equipment is relatively large and heavy, resulting in low testing efficiency and low safety. If the operation is improper, it is extremely easy to cause safety accidents. Therefore, there is an urgent need to design a six-degree-of-freedom position adjustment platform with simple operation to meet the position adjustment requirements of all camera lenses. Summary of the Invention

[0003] In view of this, the present invention aims to provide a six-degree-of-freedom position adjustment platform for spacecraft testing, so as to provide a six-degree-of-freedom position adjustment platform for spacecraft testing with simple operation, high testing efficiency and high safety.

[0004] To achieve the above object, the technical solution of the present invention is realized as follows:

[0005] A six-degree-of-freedom position adjustment platform for spacecraft testing includes a lifting frame, a flipping assembly, a rotating frame, a left-right adjustment frame, a front-back adjustment frame and a chassis, which are connected in sequence from top to bottom. The lifting frame is hinged to the flipping assembly, and an adjustment handwheel for moving up and down is installed inside the lifting frame. An adjustment handwheel for flipping is installed between the flipping assembly and the rotating frame. A connecting rod structure for rotating is installed between the rotating frame and the left-right adjustment frame. An adjustment handwheel for moving left and right is installed between the left-right adjustment frame and the front-back adjustment frame. An adjustment handwheel for moving back and forth is installed between the front-back adjustment frame and the chassis. A number of auxiliary supports are installed around the chassis.

[0006] Further, the adjustment handwheel includes a second support, a first support, a screw, a floating nut base and a floating nut. A support through hole is provided on the first support. One end of the screw passes through the support through hole and is fixed to the driving member, and the screw can rotate in the support through hole. The other end of the screw passes through the floating nut and is fixed to the second support. The floating nut base is fixedly connected to the outside of the floating nut. The first support and the second support are used to fix the components on one side of the adjustment handwheel, and the floating nut base is used to fix the components on the other side of the adjustment handwheel.

[0007] Further, the lifting frame includes an interface plate and a lifting frame body. The lifting frame body includes a side plate and a top plate that are perpendicularly connected. A center of gravity adjustment component is provided above the top plate. The outside of the side plate is slidably connected to the interface plate, and an adjustment handwheel is installed between the interface plate and the side plate.

[0008] Further, the center-of-gravity adjustment assembly includes a chain connection seat, a sprocket, and a counterweight bar. The chain connection seat is installed inside the interface plate. A number of pairs of sprockets are symmetrically installed inside the top plate. A chain is connected between two symmetrically arranged sprockets. One end of the chain is fixedly connected to the chain connection seat, and the other end is connected to the counterweight bar. The counterweight bar is in a suspended state.

[0009] Further, the rotating frame includes a frame body and a turntable bearing. A frame is installed at the edge of the bottom of the frame body. The middle of the frame is connected to the outer ring of the turntable bearing. The inner ring of the turntable bearing is fixedly connected to the left-right adjustment frame; a link structure is installed on the right side of the frame body; supports and guide rails are symmetrically installed at the top of the frame body. Above each support, there is a connecting frame hinged. Further, the top of the connecting frame is fixedly connected to the top plate, and the side is fixedly connected to the side plate.

[0010] Further, the flipping assembly includes a flipping rod, a floating plate, a guide rail, and a second connecting member. The floating plate is of a U-shaped groove structure. At the bottom of both sides of the floating plate, a floating slider is installed respectively. Each floating slider is slidably connected to a guide rail. The top of the floating plate is hinged to one end of the second connecting rod. The other end of the second connecting rod is hinged to the side of the top plate close to the side plate. An adjusting handwheel is installed between the floating plate and the frame body.

[0011] Further, the left-right adjustment frame includes a left-right adjustment frame body and a left-right adjustment mounting plate. The left-right adjustment mounting plate is installed at the top of the left-right adjustment frame body. The left-right adjustment mounting plate is fixedly connected to the inner ring of the turntable bearing. A link structure is installed between the left-right adjustment frame body and the frame body. An adjusting handwheel is installed between the left-right adjustment frame body and the front-back adjustment frame.

[0012] Further, the front-back adjustment frame is slidably connected between the upper part and the left-right adjustment frame body, and is slidably connected between the lower part and the chassis.

[0013] Further, the chassis includes a chassis body. A number of casters are evenly distributed below the chassis body. A number of chassis connectors are provided on the outside of the chassis body. An auxiliary support is installed outside each chassis connector.

[0014] Further, the auxiliary support includes a support screw and a support base. A support nut is sleeved outside the support screw. The support screw and the support nut cooperate to realize the self-locking of the support screw; the outside of the support nut is fixedly connected to the chassis connector. There is a mounting hole above the support base. One end of the support screw is fixedly installed with a support handwheel, and the other end is of a hemispherical head structure. The ball head of the support screw is placed in the mounting hole of the support base. The support base can adjust the angle relative to the axis of the support screw.

[0015] Compared with the prior art, the six-degree-of-freedom position adjustment platform for spacecraft testing described in the present invention has the following advantages:

[0016] (1) The six-degree-of-freedom position adjustment platform for spacecraft testing described in the present invention can achieve the position adjustment functions of the camera lens on the platform in six degrees of freedom: up and down, left and right, front and back, rotation, roll, and pitch. Moreover, the platform is easy to operate, greatly improving the testing efficiency and enhancing the safety of lens testing.

[0017] (2) For the six-degree-of-freedom position adjustment platform for spacecraft testing described in the present invention, since the tested camera lens is parked vertically on the side, the product is eccentric relative to the adjustment platform. To better adjust the flipping angle of the tested item and increase the anti-overturning performance of the product, a center-of-gravity adjustment component is specifically designed, and counterweight blocks can be externally hung on the counterweight rod according to the weight of the product to adjust the center of the product.

[0018] (3) For the six-degree-of-freedom position adjustment platform for spacecraft testing described in the present invention, when the product needs to be adjusted in the front and back, left and right, and rotation directions, it can be achieved by adjusting the corresponding driving components. Four casters and four auxiliary supports are installed at the four corners under the chassis, enabling the movement, roll, and pitch of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings that form a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0020] Figure 1 is a schematic diagram of the six-degree-of-freedom position adjustment platform for spacecraft testing described in the embodiment of the present invention;

[0021] Figure 2 is a position relationship diagram of the lifting frame and the flipping component described in the embodiment of the present invention;

[0022] Figure 3 is a schematic structure diagram of the rotating frame described in the embodiment of the present invention Figure 1 ;

[0023] Figure 4 is a schematic structure diagram of the rotating frame described in the embodiment of the present invention Figure 2 ;

[0024] Figure 5 is a schematic diagram of the left-right adjustment frame described in the embodiment of the present invention;

[0025] Figure 6 is a position relationship diagram of the chassis and the auxiliary support described in the embodiment of the present invention;

[0026] Figure 7 is a connection diagram of the left-right adjustment frame, the front-back adjustment frame, the chassis, and the auxiliary support described in the embodiment of the present invention;

[0027] Figure 8 Schematic structural diagram of the adjusting handwheel according to an embodiment of the present invention.

[0028] Schematic diagram.

[0029] Explanation of reference numerals:

[0030] 1 - lifting frame; 11 - storage rack; 12 - chain connection seat; 13 - sprocket connection seat; 14 - chain; 15 - sprocket; 16 - counterweight bar; 17 - lifting frame body; 171 - side plate; 172 - top plate; 18 - lifting slide rail; 19 - lifting slider; 110 - interface plate; 2 - flipping assembly; 21 - flipping rod; 22 - floating plate; 23 - guide rail; 24 - second connecting piece; 3 - rotating frame; 31 - frame body; 32 - frame; 33 - turntable bearing; 34 - rotating adjusting handwheel; 35 - rotating nut; 36 - connecting rod; 4 - left - right adjusting frame; 41 - left - right adjusting frame body; 42 - left - right adjusting slider; 43 - mounting seat; 44 - left - right adjusting mounting plate; 5 - front - rear adjusting frame; 51 - front - rear adjusting slide rail; 52 - front - rear adjusting slider; 6 - bottom frame; 61 - bottom frame body; 62 - caster; 63 - bottom frame slide rail; 64 - bottom frame connecting piece; 7 - auxiliary support; 71 - support handwheel; 72 - support lead screw; 73 - support nut; 74 - support base; 8 - adjusting handwheel; 81 - driving member; 82 - second support; 3 - first support; 84 - screw; 85 - floating nut base; 86 - floating nut 86. Detailed implementation manners

[0031] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0034] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0035] A six-degree-of-freedom position adjustment platform for spacecraft testing, the main body structure of the platform is bolted together with industrial aluminum profiles, as Figures 1 to 8 shown, including a lifting frame 1, a flipping assembly 2, a rotating frame 3, a left-right adjustment frame 4, a front-back adjustment frame 5, a chassis 6, and an auxiliary support 7 connected in sequence from top to bottom. The lifting frame 1 is hinged to the flipping assembly 2, and an adjustment handwheel 8 is installed inside the lifting frame 1 to realize the up-and-down movement of the object to be measured; an adjustment handwheel 8 is installed between the flipping assembly 2 and the rotating frame 3, between the left-right adjustment frame 4 and the front-back adjustment frame 5, and between the front-back adjustment frame 5 and the chassis 6, and the installation directions between adjacent two adjustment handwheels 8 are different; a connecting rod structure is installed between the rotating frame 3 and the left-right adjustment frame 4, and the installation direction between the connecting rod structure and the adjacent two adjustment handwheels 8 is different.

[0036] Specifically, the directions of the adjustment handwheels 8 between the flipping assembly 2 and the rotating frame 3 and between the front-back adjustment frame 5 and the chassis 6 are both located in front of the adjustment platform of the present application, respectively playing the roles of flipping adjustment and front-back adjustment; the adjustment handwheel 8 between the left-right adjustment frame 4 and the front-back adjustment frame 5 adjusts the left or right side of the platform, playing the role of left-right adjustment; the connecting rod structure is located on the left or right side of the adjustment platform, playing the role of rotating adjustment.

[0037] The adjustment handwheel 8 includes a driving member 81, a second support 82, a first support 83, a screw 84, a floating nut base 85, and a floating nut 86. A support through hole is provided on the first support 83. One end of the screw 84 passes through the support through hole and is fixedly connected to the driving member 81, and the outer diameter of the screw 84 is smaller than the inner diameter of the support through hole, so that the screw 84 can rotate in the support through hole; the other end of the screw 84 passes through the floating nut 86 and is fixedly connected to the second support 82. The floating nut 85 is threadedly connected to the screw 84, and the floating nut base 85 is fixedly connected to the outside of the floating nut 86. Preferably, the driving member 81 is a handwheel or a motor.

[0038] In one or more embodiments, the first support 83 and the second support 82 at both ends of the screw 84 are used to be fixed on the structure or device on one side of the adjusting handwheel 8, the floating nut base 85 is used to be fixed on the structure or device on the other side of the adjusting handwheel 8, the floating nut 86 is in the form of a single-sided notch, and the floating nut seat 85 limits the degree of freedom of rotation of the floating nut 86. Therefore, by rotating the driving member 81, the floating nut 86 can only move linearly on the screw 84. Since the floating nut 86 is installed in the middle of the floating nut seat 85, the floating nut seat 85 can drive the device or structure on one side of the adjusting handwheel 8 to move back and forth, that is, the devices on both sides of the adjusting handwheel 8 move relative to each other, making it very labor-saving to manually move the device.

[0039] The lifting frame 1 includes a storage rack 11, a lifting frame body 17 and a center-of-gravity adjusting component. The center-of-gravity adjusting component includes a chain connecting seat 12, a sprocket connecting seat 13, a chain 14, a sprocket 15 and a counterweight rod 16. Since the measured camera lens can only be placed vertically for measurement, the cross-section of the lifting frame body 17 is an L-shaped structure. The lifting frame body 17 includes a side plate 171 and a top plate 172 that are perpendicularly connected to each other. The side plate 171 is a frame structure, and a cross beam is provided in the middle of the frame. The outside of the side plate 171 is slidably connected to the interface plate 110, and an adjusting handwheel 8 is installed between the interface plate 110 and the cross beam. The storage rack 11 is fixedly connected to the outside of the interface plate 110; In one or more embodiments, a lifting slide rail 18 is installed on the outside of the side plate 171, and a lifting slider 19 is installed on the inside of the interface plate 110. Under the action of the adjusting handwheel 8, the lifting slider 19 moves up and down along the lifting slide rail 18 and drives the interface plate 110 to move up and down reciprocally along the side plate 171;

[0040] Both the first support 83 and the second support 82 of the adjusting handwheel 8 are installed on the outside of the side plate 171, and the floating nut base 85 is installed on the inside of the interface plate 110; after the camera lens is fixed on the storage rack 11, the process of adjusting the product up and down by rotating the adjusting handwheel 8 is as follows: when the staff wants to adjust the storage rack 11 to move up and down, rotate the rotating driving member 81 clockwise, the screw 84 moves relative to the floating nut 86, and the floating nut 86 drives the storage rack 11 to move up and down along the lifting slide rail 18 through the floating nut base 85; realizing the adjustment of the up and down degrees of freedom of the measured lens.

[0041] In one or more embodiments, the chain connecting seat 12 is installed on the inside of the interface plate 110. The top plate 172 is a rectangular frame structure, and several pairs of sprockets 15 are symmetrically installed inside the rectangular frame. A chain 14 is connected between two symmetric sprockets 15, and one end of the chain 14 is fixedly connected to the chain connecting seat 12; the other end is connected to the counterweight rod 16, and the counterweight rod 16 is in a suspended state; preferably, there are 2 pairs of sprockets 15, and two chain connecting seats 12 are symmetrically installed on the inside of the interface plate 110.

[0042] Since the mass of the lens is very large, when the lens to be measured is placed vertically on the storage rack 11, the storage rack 11 will be affected by gravity, causing the lens to be measured to be eccentric relative to the adjustment platform, and pulling the interface board 110 and the side plate 171 connected to the storage rack 11 outward, so that the side plate 171 cannot remain vertical. The provided counterweight rod 16 applies a pulling force to the interface board 110 through the chain 14 and the chain connection seat 12 due to the action of gravity to balance the deviation caused by the gravity of the lens, moving the center of gravity of the lens to be measured towards the center of gravity position of the carriage, increasing the anti-overturning performance of the product. Such a design also facilitates the adjustment of flipping; making the platform more stable, greatly reducing the error. The mass of the counterweight rod 16 can be increased, decreased or replaced according to the mass of the lens to be measured.

[0043] Preferably, the counterweight rod 16 and the chain 14 are detachably connected. In one or more embodiments, the counterweight rod 16 is provided with hanging ears, and the end of the chain 14 is provided with hooks, and the two are hooked and connected. This facilitates the disassembly and replacement of the counterweight rod 16.

[0044] In one or more embodiments, each sprocket 15 is installed on the frame of the top plate 172 through a sprocket connection seat 13.

[0045] The rotating frame 3 realizes the rotation function of the product to be measured. The rotating frame 3 includes a frame body 31, a frame 32, and a turntable bearing 33. The frame 32 is installed at the edge of the bottom of the frame body 31. The middle of the frame 32 is connected to the outer ring of the turntable bearing 33, and the inner ring of the turntable bearing 33 is fixedly connected to the left and right adjustment frames 4; preferably, the nut for fixing the inner ring of the turntable bearing 33 and the left and right adjustment frames 4 is coated with anti-loosening glue; making the connection between the two more stable; a connecting rod structure is installed on the right side of the frame body 31; supports 37 and guide rails 23 are symmetrically installed on the top of the frame body 31. Above each support 37, it is hinged to a connecting frame. The top of the connecting frame is fixedly connected to the top plate 172, and the side is fixedly connected to the side plate 171. The two guide rails 23 are arranged parallel to each other. The rotating frame 3 mainly realizes the adjustment of the rotational degree of freedom of the product to be measured.

[0046] In this embodiment, the connecting rod structure includes a rotary adjusting handwheel 34, a rotary nut 35, and a connecting rod 36. A rotary adjusting screw is fixedly connected to the inner side of the rotary adjusting handwheel 34. One end of the rotary adjusting screw is externally threadedly connected to the rotary nut 35. The outer part of the rotary nut 35 is fixedly connected to one end of the connecting rod 36, and the other end of the connecting rod 36 is fixedly connected to the frame 32. Preferably, a rotary adjusting bearing is provided on the outer part of the rotary adjusting screw, and the rotary adjusting bearing is fixedly connected to the left and right adjusting frame 4. The product rotation adjustment process is as follows: When the staff wants to adjust the rotary frame 3, turn the rotary adjusting handwheel 34 clockwise. The rotary adjusting handwheel 34 moves inward relative to the left and right adjusting frame 4. The rotary adjusting screw drives the rotary nut 35, the connecting rod 36, and the frame 32 to move leftward in sequence. After the frame 32 moves, it drives the turntable bearing 33 to rotate clockwise, thereby driving the frame body 31 and the components above it to rotate clockwise; when the rotary adjusting handwheel 34 is rotated counterclockwise, the frame body 31 and the components above it rotate in the opposite direction, thereby realizing the rotation of the frame body 31 and the components above it.

[0047] The flipping assembly 2 includes a flipping rod 21, a floating plate 22, a guide rail 23, and a second connecting member 24. The floating plate 22 has a U-shaped groove structure. A floating slider is installed at the bottom of each side surface of the floating plate 22, and each floating slider is slidably connected to a guide rail 23. The top of the floating plate 22 is hinged to one end of the second connecting rod 24, and the other end of the second connecting rod 24 is hinged to the side of the top plate 172 close to the side plate 171. An adjusting handwheel 8 is installed between the floating plate 22 and the frame body 31; specifically, the first support 83 and the second support 82 of the adjusting handwheel 8 are both fixedly connected to the frame body 31, and the floating nut base 85 is installed in the groove of the floating plate 22; the flipping assembly 2 mainly realizes the pitching angle adjustment of the measured product. The specific flipping adjustment process is as follows: The driving member 81 rotates to drive the screw 84 to rotate. The screw 84 drives the floating plate 22 to move back and forth along the guide rail 23 through the floating nut 86 and the floating nut base 85. Since the floating plate 22 is connected by the flipping rod 21, and the top plate 172 and the side plate 171 are both connected to the support 37 through the connecting frame, when the floating plate 22 moves back and forth, the floating plate 22 makes the top plate perform a pitching motion (i.e., a flipping motion) with the support 37 as the fulcrum through the flipping rod 21. During the pitching process of the flipping assembly 2, the chain 14 will move up and down in the sprocket 15, and then the counterweight rod 16 will move up and down accordingly. At this time, the counterweight rod 16 will offset the center of gravity of the product backward through the chain 14, preventing the screw 84 of the handwheel 8 from being unable to rotate due to a large bending moment.

[0048] The left - right adjustment frame 4 includes a left - right adjustment frame body 41, left - right adjustment sliders 42, a mounting base 43, and a left - right adjustment mounting plate 44. The top of the left - right adjustment frame body 41 is provided with the left - right adjustment mounting plate 44, and the left - right adjustment mounting plate 44 is fixedly connected to the inner ring of the turntable bearing 33. On the right side of the left - right adjustment frame body 41, there is a mounting base 43 and an adjustment handwheel 8. The mounting base 43 is used for installing a rotary adjustment bearing and is located between the left - right adjustment frame body 41 and the frame body 31; the adjustment handwheel 8 is located between the left - right adjustment frame body 41 and the front - rear adjustment frame 5 bracket; specifically, the first support 83 and the second support 82 of this adjustment handwheel 8 are both fixedly connected to the left - right adjustment frame body 41, and the floating nut base 85 is installed at the bottom of the frame body 31; on the front and rear sides of the bottom of the left - right adjustment frame body 41, a group of left - right adjustment sliders 42 are respectively installed.

[0049] The left - right adjustment process of the product is as follows: When the staff wants to adjust the left - right movement of the left - right adjustment frame 4 and the components above it, the staff rotates the rotary driving part 81 clockwise. The screw 84 moves relative to the floating nut 86, and the floating nut 86 gives a leftward force to the left - right adjustment frame body 41 through the floating nut base 85. The left - right adjustment frame body 41 drives the left - right adjustment sliders 42 to move leftward along the front - rear adjustment slide rail 51, so that the left - right adjustment frame 4 and the components above it move leftward; when wanting to move the left - right adjustment frame 4 and the components above it to the left, reverse - rotate the rotary driving part 81, thus realizing the left - right movement of the left - right adjustment frame 4 and the components above it.

[0050] The front - rear adjustment frame 5 includes front - rear adjustment slide rails 51 and front - rear adjustment sliders 52. On the front and rear sides above the front - rear adjustment frame 5, a front - rear adjustment slide rail 51 is respectively installed. The front - rear adjustment slide rail 51 is used for sliding connection with the left - right adjustment sliders 42; on the left and right sides below the front - rear adjustment frame 5, a group of front - rear adjustment sliders 52 are respectively installed. An adjustment handwheel 8 is installed between the front - rear adjustment frame 5 and the chassis 6, and the direction of the adjustment handwheel 8 is forward.

[0051] The chassis 6 includes a chassis body 61, casters 62, chassis slide rails 63, and chassis connectors 64. On the left and right sides above the chassis body 61, chassis slide rails 63 are provided. The chassis slide rails 63 are combined with the front - rear adjustment sliders 52 to form a sliding connection. An adjustment handwheel 8 is installed between the upper part of the chassis body 61 and the front - rear adjustment frame 5. Specifically, the first support 83 and the second support 82 of this adjustment handwheel 8 are both fixedly connected to the chassis body 61, and the floating nut base 85 is installed at the bottom of the front - rear adjustment frame 5; several casters 62 are evenly distributed below the chassis body 61, and several chassis connectors 64 are provided on the outside of the chassis body 61. Each chassis connector 64 is used for installing an auxiliary support 7. The provided casters 62 can realize the functions of product movement and turning.

[0052] The forward and backward adjustment process of the product is as follows: when the staff wants to adjust the forward and backward adjustment frame 5 and the components above it to move backward, the staff rotates the rotary drive member 81 clockwise. The screw rod 84 moves relative to the floating nut 86, and the floating nut 86 gives a backward force to the forward and backward adjustment frame 5 through the floating nut base 85. The forward and backward adjustment frame 5 drives the forward and backward adjustment slider 52 to move backward along the base frame slide rail 63, so that the forward and backward adjustment frame 5 and the components above it move backward; when it is desired to move the forward and backward adjustment frame 5 and the components above it forward, the rotary drive member 81 is rotated in the reverse direction, thereby realizing the forward and backward movement of the forward and backward adjustment frame 5 and the components above it.

[0053] The auxiliary support 7 includes a support handwheel 71, a support lead screw 72, a support nut 73 and a support base 74. The support lead screw 72 is sleeved outside the support nut 73. The threads on the support lead screw 72 and the support nut 73 are both T-shaped threads to achieve self-locking of the support lead screw 72; the outside of the support nut 73 is fixedly connected to the base frame connecting member 64. There is a mounting hole above the support base 74. One end of the support lead screw 72 is fixedly installed with the support handwheel 71, and the other end is a hemispherical head structure. The ball head of the support lead screw 72 is placed in the hole of the support base 74, and the support base 74 can be adjusted by ±5° relative to the axis of the support lead screw 72; the support base 74 is in contact with the ground. The specific adjustment process of the pitch and roll of the product is as follows: rotate the support handwheel 71 clockwise, and the support handwheel 71 drives the support lead screw 72 to move upward relative to the support nut 73, so that the length of the support lead screw 72 below the base frame connecting member 64 decreases, thereby reducing the height of the adjustment platform of the present application, that is, reducing the height of the product. In one or more embodiments, the base frame body 61 is a rectangular frame structure, and a base frame connecting member 64 is installed at each of the four corners of the base frame body 61. Therefore, there are 4 auxiliary supports 7. At the same time, rotate the support handwheels 71 of the 4 auxiliary supports 7 to realize the lifting adjustment of the product. By adjusting the support handwheels 71 of the two auxiliary supports 7 on the same side, the pitch and roll of the product can be realized.

[0054] The specific use process of the six-degree-of-freedom position adjustment platform for spacecraft testing is as follows:

[0055] 1) Installation: Move the six-degree-of-freedom position adjustment platform for spacecraft camera lens testing in this embodiment to the test point, and lift and place the product to be tested on the storage rack 11 of the lifting frame 1;

[0056] 2) Adjustment: According to the test requirements, adjust the position of the product under test. When the product needs to move forward and backward, the adjusting handwheel between the front and rear adjusting frame 5 and the chassis 6 can be adjusted. When the product needs to move left and right, the adjusting handwheel between the left and right adjusting frame 4 and the front and rear adjusting frame 5 can be rotated. When the product needs to rotate, the connecting rod structure between the rotating frame 3 and the left and right adjusting frame 4 can be adjusted. When the product needs to be flipped, the adjusting handwheel between the flipping assembly 2 and the rotating frame 3 can be rotated. When the product needs to be lifted or lowered, the adjusting handwheel inside the lifting frame 1 can be rotated. When the product needs to pitch and roll, two people need to shake the supporting handwheel 71 of the same-side auxiliary support 7 at the same time.

[0057] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A six-degree-of-freedom position adjustment platform for spacecraft testing, characterized in that: It includes a lifting frame, a flipping assembly, a rotating frame, a left-right adjusting frame, a front-back adjusting frame and a chassis, which are connected in sequence from top to bottom. The lifting frame is hinged to the flipping assembly. An adjusting handwheel for moving up and down is installed inside the lifting frame. An adjusting handwheel for flipping is installed between the flipping assembly and the rotating frame. A link structure for rotation is installed between the rotating frame and the left-right adjusting frame. An adjusting handwheel for moving left and right is installed between the left-right adjusting frame and the front-back adjusting frame. An adjusting handwheel for moving back and forth is installed between the front-back adjusting frame and the chassis. A number of auxiliary supports are installed around the chassis. The lifting frame includes an interface plate and a lifting frame body. The lifting frame body includes a side plate and a top plate that are perpendicularly connected to each other. A center-of-gravity adjusting assembly is provided above the top plate. The outer side of the side plate is slidably connected to the interface plate, and an adjusting handwheel is installed between the interface plate and the side plate. A storage rack is fixedly connected to the outer side of the interface plate. The center-of-gravity adjusting assembly includes a chain connection seat, a sprocket and a counterweight rod. The chain connection seat is installed on the inner side of the interface plate. A number of pairs of sprockets are symmetrically installed inside the top plate. A chain is connected between two symmetric sprockets. One end of the chain is fixedly connected to the chain connection seat, and the other end is connected to the counterweight rod. The counterweight rod is in a suspended state. The rotating frame includes a frame body and a turntable bearing. A frame is installed at the edge of the bottom of the frame body. The middle of the frame is connected to the outer ring of the turntable bearing. The inner ring of the turntable bearing is fixedly connected to the left-right adjusting frame. A link structure is installed on the right side of the frame body. Supports and guide rails are symmetrically installed at the top of the frame body. Above each support, there is a hinge connection with a connecting frame. The top of the connecting frame is fixedly connected to the top plate, and the side is fixedly connected to the side plate. The flipping assembly includes a flipping rod, a floating plate, a guide rail and a second connecting piece. The floating plate is a U-shaped groove structure. A floating slider is installed at the bottom of each side surface of the floating plate. Each floating slider is slidably connected to a guide rail. The top of the floating plate is hinged to one end of a second connecting rod. The other end of the second connecting rod is hinged to the side of the top plate close to the side plate. An adjusting handwheel is installed between the floating plate and the frame body. The left-right adjusting frame includes a left-right adjusting frame body and a left-right adjusting mounting plate. The left-right adjusting mounting plate is installed at the top of the left-right adjusting frame body. The left-right adjusting mounting plate is fixedly connected to the inner ring of the turntable bearing. A link structure is installed between the left-right adjusting frame body and the frame body. An adjusting handwheel is installed between the left-right adjusting frame body and the front-back adjusting frame. The upper part of the front-back adjusting frame is slidably connected to the left-right adjusting frame body, and the lower part is slidably connected to the chassis.

2. The six-degree-of-freedom position adjustment platform for spacecraft testing according to claim 1, characterized in that: The adjusting handwheel includes a second support, a first support, a screw, a floating nut base and a floating nut. A support through hole is provided on the first support. One end of the screw passes through the support through hole and is fixedly connected to the driving part, and the screw can rotate in the support through hole. The other end of the screw passes through the floating nut and is fixedly connected to the second support. The floating nut base is fixedly connected to the outside of the floating nut. The first support and the second support are used to fix the components on one side of the adjusting handwheel, and the floating nut base is used to fix the components on the other side of the adjusting handwheel.

3. The six-degree-of-freedom position adjustment platform for spacecraft testing according to claim 1, characterized in that: The chassis includes a chassis body. A number of casters are evenly distributed below the chassis body. A number of chassis connecting pieces are provided on the outer side of the chassis body. An auxiliary support is installed outside each chassis connecting piece.

4. The six-degree-of-freedom position adjustment platform for spacecraft testing according to claim 3, characterized in that: The auxiliary support includes a support lead screw and a support base. A support nut is sleeved outside the support lead screw, and the support lead screw and the support nut cooperate to achieve self-locking of the support lead screw. The support nut is fixedly connected to the underframe connecting piece outside. An installation hole is provided above the support base. One end of the support lead screw is fixedly installed with a support handwheel, and the other end is a hemispherical head structure. The ball head of the support lead screw is placed in the installation hole of the support base, and the support base can adjust the angle relative to the axis of the support lead screw.

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