CN114313317A - Secondary unfolding device for satellite sailboard - Google Patents

Abstract

A satellite windsurfing board secondary deployment device, comprising a satellite star and a windsurfing board group mounted on it, the windsurfing board group comprising a windsurfing board outer board, a windsurfing board middle board and a windsurfing board inner board, the satellite windsurfing board two The secondary deployment device includes a fixing claw, an unlocking device, a hinge group and a limit block. The fixing claw is installed on the windsurfing board group and restricts the unfolding of the folded windsurfing board group along the Y direction, and the unlocking device is fixed on the windsurfing board group. On the satellite body, the unlocking device can release the Y-direction fixation of the windsurfing board group by unlocking the fixing claw, and the hinge group is respectively installed between each windsurfing board of the windsurfing board group and each other. Between the windsurfing board group and the satellite star body, the limiting block is fixed on the satellite star body and abuts against the windsurfing board group.

Description

A satellite windsurfing board secondary deployment device

technical field

The invention relates to the technical field of automobile safety, in particular to a secondary deployment device for a satellite windsurfing board.

Background technique

The solar panel is an important bearing component of the solar cell array of the spacecraft in orbit. In order to ensure the deployment area of the solar panel and the retracted size of the satellite, the solar panel is mostly retracted during launch and unfolded after entering orbit.

At present, the common deployment methods of solar panels mostly do not control the timing or use rope-type devices and spring-type devices to control the deployment timing. They have the following shortcomings: the deployment method that does not control the timing is likely to cause the windsurfing between the panels during the multiple deployment process. Collision, which easily causes damage to the glass cover, affects the operation and installation of the spacecraft, and has insufficient safety; the deployment method using rope-type devices often increases redundant deployment devices, and the ropes are easily hooked after deployment, affecting the moving parts of the spacecraft. On-rail safety; the deployment method using spring-like devices will increase the volume of the entire windsurfing board in the folded state, which reduces the overall structural reliability to a certain extent; in addition, the common devices used to control the deployment sequence of the windsurfing board have relatively single functions and cannot improve the Satellite frequencies in collapsed and expanded states.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a satellite windsurfing board secondary deployment device with reliable structure and strong adaptability.

The satellite windsurfing board secondary deployment device of the present invention includes a satellite star body and a windsurfing board group mounted on it. The windsurfing board group includes a windsurfing board outer board, a windsurfing board middle board and a windsurfing board inner board. The secondary deployment device includes a fixing claw, an unlocking device, a hinge group and a limit block. The fixing claw is installed on the windsurfing board group and restricts the unfolding of the folded windsurfing board group along the Y direction, and the unlocking device is fixed on the windsurfing board group. On the satellite body, the unlocking device can release the Y-direction fixation on the windsurfing board group by unlocking the fixing claw, and the hinge group is respectively installed between each windsurfing board of the windsurfing board group and each other. Between the windsurfing board group and the satellite star body, the limiting block is fixed on the satellite star body and abuts against the windsurfing board group.

Further, the fixing claws include a first fixing claws and a second fixing claws, the first fixing claws are arranged on the X-direction side of the outer panel of the windsurfing board, and the second fixing claws are arranged on the sails On the Z-direction side of the outer panel, the first fixing claw and the second fixing claw are used for locking the folded windsurfing board group along the Y-direction.

Further, the unlocking device includes a first unlocking device and a second unlocking device, the first unlocking device is used for unlocking the first fixing claw, and the second unlocking device is used for unlocking the second fixing claw, The unlocking device can be unlocked under program control.

Further, the hinge group includes a first hinge for connecting the middle board of the windsurfing board and the satellite body, a second hinge for connecting the middle board of the windsurfing board and the outer board of the windsurfing board, and a hinge for connecting the middle board of the windsurfing board and the outer board The third hinge connecting the middle board of the windsurfing board and the inner board of the windsurfing board, the first hinge can control the middle board of the windsurfing board to turn around the X-axis relative to the satellite star, and the second hinge can control all the The outer panel of the windsurfing board is turned over relative to the middle panel of the windsurfing board around the Z axis, and the third hinge can control the inner panel of the windsurfing board to be turned relative to the middle panel of the windsurfing board around the Z axis.

Further, the hinge group further includes a fourth hinge for connecting the satellite star and the feed, and the fourth hinge can control the feed to turn around the X-axis relative to the satellite star.

Further, the hinge group also includes a hinge assembly including a female hinge, a male hinge, a torsion spring, a stop nut, a hinge shaft and a lubricating ring, and the torsion spring is wound around the hinge shaft , the force arms at both ends of the torsion spring are respectively connected to the female hinge and the male hinge, the lubricating ring is sleeved on the hinge shaft, the female hinge is sleeved on the lubricating ring, the hinge The shaft is fixedly connected with the male hinge, and the stop nut is fastened on the hinge shaft.

Further, the first hinge, the second hinge, the third hinge and the fourth hinge all include the hinge assembly.

Further, the limit block includes a first limit block and a second limit block, the first limit block abuts the side edge of the windsurfing board group along the X direction and restricts the folded windsurfing board. The group moves along the X direction, the first limit block can also limit the windsurfing board group to expand along the Y direction when it is turned around the X axis, and the second limit block is connected to the side of the windsurfing board group along the Z direction. The edges are abutted and the folded windsurfing board group is restricted from moving along the Z direction.

Further, the first limit block and the first hinge are arranged on the same side of the windsurfing board group along the Z direction, and the second limit block and the first fixing claw are arranged along the Z direction at the same side of the windsurfing board. on the same side of the windsurfing group.

Further, the satellite windsurfing board secondary deployment device also includes an inner gasket and an outer gasket, the inner gasket is protruded along the Y direction on the side of the windsurfing middle plate facing the windsurfing inner plate, and the outer gasket is The sheet is protruded along the Y direction on the side of the windsurfing midboard facing away from the windsurfing inner board, and a plurality of the inner gaskets are arranged along the Y direction on the folded windsurfing midboard, the Between the outer panel of the windsurfing board and the inner panel of the windsurfing board, the outer gasket is used to abut against the first limiting block after the windsurfing board group is unfolded.

The satellite windsurfing board secondary deployment device of the present invention limits the folded windsurfing board group through the fixing claw and the limit block, and controls the time sequence when the windsurfing board group is unfolded through the limit of the hinge group and the limit block, thereby improving the accuracy of the launch stage. The adaptability of the mechanical environment reduces the requirements for the spacecraft on-orbit attitude control to a certain extent. The present invention does not require additional spring devices, the overall structure is simple and reliable, and has strong adaptability. The deployment time and deployment can be adjusted by adjusting the installation accuracy of the limit block. moment, reducing the impact of windsurfing.

The above description is only an overview of the technical solution of the present invention, in order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description, and in order to make the above and other objects, features and advantages of the present invention more obvious and easy to understand , the following specific preferred embodiments, and in conjunction with the accompanying drawings, are described in detail as follows.

Description of drawings

FIG. 1 is a front view of the satellite windsurfing board secondary deployment device provided by the present invention when it is folded.

FIG. 2 is a back view of the satellite windsurfing board secondary deployment device provided by the present invention when it is folded.

FIG. 3 is a top view of the satellite windsurfing board secondary deployment device provided by the present invention when it is folded.

FIG. 4 is a front view of the satellite windsurfing board secondary deployment device provided by the present invention after deployment.

FIG. 5 is a schematic diagram of the satellite windsurfing board secondary deployment device provided by the present invention after deployment.

FIG. 6 is a schematic diagram of the hinge assembly in the present invention.

7 is a cross-sectional view of the hinge shaft in the present invention.

Detailed ways

In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the present invention is described in detail below with reference to the accompanying drawings and preferred embodiments.

It should be noted that the "X direction", "Y direction" and "Z direction" mentioned in the description are all based on the plane direction of Figure 1 in the description, that is, the left and right direction of Figure 1 in the description is the X direction, and the description attached The up-down direction of Fig. 1 is the Z direction, and the normal direction of the plane direction of Fig. 1 of the specification is the Y direction.

Please refer to FIG. 1 to FIG. 3 , the satellite windsurfing board secondary deployment device of the present invention includes a satellite star and a windsurfing board group mounted on it. The windsurfing board group includes a windsurfing board outer board 11, a windsurfing board middle board 12 and a windsurfing board inner Board 13, the secondary deployment device of the satellite windsurfing board includes a fixed claw 2, an unlocking device 3, a hinge group 4 and a limit block 5, the fixed claw 2 is installed on the windsurfing board group and restricts the unfolding of the folded windsurfing board group along the Y direction, The unlocking device 3 is fixed on the satellite star, and the unlocking device 3 can release its Y-direction fixation on the windsurfing board group by unlocking the fixing claw 2, and the hinge group 4 is respectively installed between each windsurfing board of the windsurfing board group and between the windsurfing board group and the satellite. Between the stars, the limiting block 5 is fixed on the satellite star and is in contact with the windsurfing board group. In this embodiment, the windsurfing board group is arranged above the satellite star (not shown) in the Y direction.

Further, the fixing claws 2 include a first fixing claws 21 and a second fixing claws 22 , the first fixing claws 21 are arranged on the X-direction side of the windsurfing board 11 , and the second fixing claws 22 are arranged on the windsurfing board 11 . On the side of the Z direction, the first fixing claw 21 and the second fixing claw 22 are used to lock the folded windsurfing board group along the Y direction. The unlocking device 3 includes a first unlocking device 31 and a second unlocking device 32. The first The unlocking device 31 is used for unlocking the first fixing claw 21 , the second unlocking device 32 is used for unlocking the second fixing claw 22 , and the unlocking device 3 can be unlocked under program control.

Further, please refer to FIG. 4 to FIG. 5 together, the hinge group 4 includes a first hinge 41 for connecting the middle board 12 of the windsurfing board and the satellite star, a first hinge 41 for connecting the middle board 12 of the windsurfing board and the outer board 11 of the windsurfing board. Two hinges 42, a third hinge 43 for connecting the middle panel 12 and the inner panel 13 of the windsurfing board, and a fourth hinge 44 for connecting the satellite and the feed 8, the first hinge 41 can control the middle panel 12 of the windsurfing board The second hinge 42 can control the outer panel 11 of the windsurfing board to flip relative to the middle panel 12 around the Z axis, and the third hinge 43 can control the inner panel 13 of the windsurfing board to rotate relative to the middle panel 12 of the windsurfing board around the Z axis. Turning over, the fourth hinge 44 can control the feed 8 to turn around the X-axis relative to the satellite.

Further, please refer to FIG. 6 to FIG. 7 together, the hinge group 4 also includes a hinge assembly, and the hinge assembly includes a female hinge 4a, a male hinge 4b, a torsion spring 4c, a stop nut 4d, a hinge shaft 4e and a lubricating ring 4f , the torsion spring 4c is wound around the hinge shaft 4e, and the force arms at both ends of the torsion spring 4c are respectively connected to the female hinge 4a and the male hinge 4b, the lubricating ring 4f is sleeved on the hinge shaft 4e, and the female hinge 4a is sleeved on the lubricating ring 4f The hinge shaft 4e is fixedly connected with the male hinge 4b, the stop nut 4d is fastened to the hinge shaft 4e, and the first hinge 41, the second hinge 42, the third hinge 43 and the fourth hinge 44 include hinge assemblies. In this embodiment, the force arms at both ends of the torsion spring 4c are respectively connected to the female hinge 4a and the male hinge 4b, and the lubricating ring 4f is placed between the female hinge 4a and the male hinge 4b, thereby preventing the direct connection between the male hinge 4b and the female hinge 4a. The contact causes the space of the hinge assembly to be cold welded. At the same time, under the action of the torsion spring 4c, the male hinge 4b and the female hinge 4a can be unfolded in the specified direction. After reaching the specified rotation angle, the female and the female are mutually limited. Under the combined action of the residual torque of the torsion spring 4c Keep the windsurfing in the unfolded position.

Further, the limit block 5 includes a first limit block 51 and a second limit block 52. The first limit block 51 is in contact with the side edge of the windsurfing board group along the X direction and restricts the folded windsurfing board group along the X direction. Move, the first limit block 51 can also limit the windsurfing board group to unfold along the Y direction when flipping around the X axis, and the second limit block 52 abuts against the side of the windsurfing board group along the Z direction and restricts the folded windsurfing board group Moving along the Z direction, the first limit block 51 and the first hinge 41 are arranged on the same side of the windsurfing board group along the Z direction, and the second limit block 52 and the first fixing claw 21 are arranged on the same side of the windsurfing board group along the Z direction. side.

Further, the satellite sailboard secondary deployment device also includes an inner gasket 61 and an outer gasket 71. The inner gasket 61 is protruded along the Y direction on the side of the middle board 12 of the windsurfing board facing the inner board 13 of the windsurfing board. 71 is protruded along the Y direction on the side of the windsurfing board 12 facing away from the windsurfing board inner board 13, and a plurality of inner spacers 61 are cushioned along the Y direction on the folded windsurfing board middle board 12, the windsurfing board outer board 11 and the windsurfing board. Between the inner panels 13 of the windsurfing board, the outer gasket 71 is used to abut against the first limiting block 51 after the windsurfing board group is unfolded. When the windsurfing board group is in the folded state, the first limit block 51 and the second limit block 52 can limit the three-way movement of the windsurfing board group, and play the role of enhancing the overall fundamental frequency of the windsurfing board group. Under the action of tight force, each windsurfing board is separated to ensure that each windsurfing board does not touch each other. By adjusting the installation precision of the first limiting block 51, the friction force between it and the windsurfing board group can be adjusted, and the unfolding speed and unfolding impact of the windsurfing board can be indirectly controlled. When the windsurfing board group is in the unfolded state, the outer gasket 71 presses the first limiting block 51, which limits the freedom of movement of the windsurfing board to a certain extent, and enhances the stiffness of the windsurfing board after deployment.

Specifically, in the process of opening the windsurfing board group, the second hinge 42 can disengage the Y-direction limit of the first limit block 51 when the first hinge 41 is opened to the first deployment threshold angle, and the first deployment threshold angle is The failure point of the first limit block 51, the third hinge 43 can disengage the limit of the first limit block 51 when the first hinge 41 is opened to the second deployment threshold angle, and the second deployment threshold angle is the first limit position The failure point of the block 51 can be adjusted by adjusting the height of the first limit block 51 to adjust the first deployment threshold angle and the second deployment threshold angle. Therefore, the present invention can adjust the limit block 5 without adding additional equipment. The precision of the windsurfing board realizes the control and adjustment of the unfolding sequence, unfolding speed, unfolding moment, folding stiffness and unfolding stiffness of the windsurfing board, and has strong adaptability to different types of windsurfing boards.

Specifically, during ground transportation and launching, the folded windsurfing board group is locked along the Y direction by the first fixing claws 21 and the second fixing claws 22, and the root of the middle board 12 is connected to the satellite star through the first hinge 41. Connected, the first limiting block 51 and the second limiting block 52 respectively restrict the movement of the windsurfing board group along the X direction and the Z direction, so the windsurfing board group can be reliably and tightly fixed on the satellite star.

During the unfolding of the mechanical control sequence of the satellite windsurfing board, the first unlocking device 31 and the second unlocking device 32 receive program instructions to unlock, and by unlocking the first fixing claws 21 and the second fixing claws 22, the Y direction of the windsurfing board group is released. Locked, the first hinge 41 is unfolded. During the unfolding process of the first hinge 41 around the X axis, the windsurfing board group releases the lock on the feed source 8, and the feed source 8 is flipped and unfolded relative to the satellite star around the X axis under the action of the fourth hinge 44. At this time, the inner panel of the windsurfing board 13 and the outer panel 11 of the windsurfing board cannot be unfolded under the Y-direction limit of the first limit block 51 through the second hinge 42 and the third hinge 43 . When the first hinge 41 is flipped and unfolded to the first unfolding threshold angle, the outer panel 11 of the windsurfing board is released from the Y-direction limit of the first limiting block 51 , and the second hinge 42 controls the outer panel 11 of the windsurfing board to be relative to the middle of the windsurfing board around the Z axis. The board 12 is flipped and unfolded. When the first hinge 41 flips and unfolds to the second unfolding threshold angle, the third hinge 43 controls the windsurfing board inner board 13 to flip and unfold relative to the windsurfing board middle board 12. When the windsurfing board outer board 11 and the windsurfing board inner board 13 After the deployment is in place, the outer spacer 71 and the first limit block 51 are offset to offset part of the rebound force generated by the torsion spring 4c, and the satellite sailboard mechanical control sequence deployment ends.

To sum up, the satellite windsurfing board secondary deployment device of the present invention limits the folded windsurfing board group through the fixed claw and the limit block, and controls the time sequence when the windsurfing board group is unfolded by the limit of the hinge group and the limit block, which improves the performance of the windsurfing board group. The adaptability to the mechanical environment in the launch stage reduces the requirements for the spacecraft on-orbit attitude control to a certain extent. The present invention does not require additional spring devices, the overall structure is simple and reliable, and has strong adaptability, and the deployment can be adjusted by adjusting the installation accuracy of the limit block. Time and deployment moment, reduce the impact of windboard deployment.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. , without departing from the scope of the technical solution of the present invention, when the technical content disclosed above can be used to make some changes or modifications to equivalent embodiments with equivalent changes, provided that it does not depart from the technical solution content of the present invention, according to the technical essence of the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solutions of the present invention.

Claims (10)

1. A secondary deployment device for a satellite windsurfing board, comprising a satellite star body and a windsurfing board group installed thereon, the windsurfing board group comprising a windsurfing board outer board (11), a windsurfing board middle board (12) and a windsurfing board inner board The board (13) is characterized in that: the satellite sailboard secondary deployment device comprises a fixing claw (2), an unlocking device (3), a hinge group (4) and a limit block (5), the fixing claw (2) ) is installed on the windsurfing board group and restricts the unfolding of the folded windsurfing board group along the Y direction, the unlocking device (3) is fixed on the satellite star, and the unlocking device (3) can be unlocked by unlocking all the The fixing claw (2) releases its Y-direction fixation on the sail board group, and the hinge group (4) is respectively installed between each sail board of the sail board group and between the sail board group and the satellite. Between the star bodies, the limiting block (5) is fixed on the satellite star body and abuts against the windsurfing board group. 2. The satellite sailboard secondary deployment device according to claim 1, characterized in that: the fixing claw (2) comprises a first fixing claw (21) and a second fixing claw (22), the first fixing claw (22) The claws (21) are arranged on the X-direction side of the windsurfing outer plate (11), and the second fixing claws (22) are arranged on the Z-direction side of the windsurfing outer plate (11). The first fixing claws (21) and the second fixing claws (22) are used to lock the folded sail board group along the Y direction. 3. The satellite sailboard secondary deployment device according to claim 2, characterized in that: the unlocking device (3) comprises a first unlocking device (31) and a second unlocking device (32), the first unlocking device (32) The device (31) is used for unlocking the first fixing claw (21), the second unlocking device (32) is used for unlocking the second fixing claw (22), and the unlocking device (3) can be controlled in a program down to unlock. 4. The satellite windsurfing board secondary deployment device according to claim 1, wherein the hinge group (4) comprises a first hinge for connecting the windsurfing board middle board (12) and the satellite star (41), a second hinge (42) for connecting the windsurfing midboard (12) and the windsurfing outer board (11), and a second hinge (42) for connecting the windsurfing midboard (12) and the sail The third hinge (43) of the inner panel (13), the first hinge (41) can control the middle panel (12) of the windsurfing board to turn around the X-axis relative to the satellite star, and the second hinge (42) ) can control the windsurfing board outer board (11) to turn relative to the windsurfing board middle board (12) around the Z axis, and the third hinge (43) can control the windsurfing board inner board (13) to be opposite about the Z axis The middle board (12) of the windsurfing board is turned over. 5. The satellite windsurfing board secondary deployment device according to claim 4, characterized in that: the hinge group (4) further comprises a fourth hinge (44) for connecting the satellite star and the feed (8) , the fourth hinge (44) can control the feed source (8) to turn around the X-axis relative to the satellite star. 6. The satellite windsurfing board secondary deployment device according to claim 5, wherein the hinge group (4) further comprises a hinge assembly comprising a female hinge (4a), a male hinge (4b) ), a torsion spring (4c), a stop nut (4d), a hinge shaft (4e) and a lubricating ring (4f), the torsion spring (4c) is wound around the hinge shaft (4e), the torsion spring (4e) The lever arms at both ends of (4c) are respectively connected to the female hinge (4a) and the male hinge (4b), the lubricating ring (4f) is sleeved on the hinge shaft (4e), and the female hinge ( 4a) is sleeved on the lubricating ring (4f), the hinge shaft (4e) is fixedly connected with the male hinge (4b), and the stop nut (4d) is fastened with the hinge shaft (4e) superior. 7. The satellite sailboard secondary deployment device according to claim 6, characterized in that: the first hinge (41), the second hinge (42), the third hinge (43) and Each of the fourth hinges (44) includes the hinge assembly. 8. The satellite windsurfing board secondary deployment device according to claim 7, wherein the limiting block (5) comprises a first limiting block (51) and a second limiting block (52). The first limit block (51) abuts against the side edge of the windsurfing board group along the X direction and restricts the folded windsurfing board group from moving along the X direction, and the first limit block (51) can also limit all the The windsurfing board group is unfolded along the Y direction when it is turned over around the X axis, and the second limiting block (52) is in contact with the side edge of the windsurfing board group along the Z direction and restricts the folded windsurfing board group along the Z direction. to move. 9 . The secondary deployment device for a satellite windsurfing board according to claim 8 , wherein the first limiting block ( 51 ) and the first hinge ( 41 ) are arranged on the windsurfing board group along the Z direction. 10 . On the same side of the windsurfing board group, the second limiting block (52) and the first fixing claw (21) are arranged on the same side of the windsurfing board group along the Z direction. 10. The satellite windsurfing board secondary deployment device according to claim 1, characterized in that: the satellite windsurfing board secondary deployment device further comprises an inner gasket (61) and an outer gasket (71), and the inner gasket ( 61) The outer gasket (71) is protruded along the Y direction on the side of the windsurfing midboard (12) facing the windsurfing inner board (13), and the outer gasket (71) is protruded along the Y direction on the windsurfing midboard ( 12) On the side facing away from the inner panel (13) of the windsurfing board, a plurality of the inner spacers (61) are arranged along the Y direction on the folded middle panel of the windsurfing board (12), the windsurfing board Between the outer panel (11) and the inner panel (13) of the windsurfing board, the outer gasket (71) is used to abut against the first limiting block (51) after the windsurfing panel group is unfolded.

Images