A windsurfing driving mechanism

Abstract

The present invention belongs to the technical field of spacecraft solar wing sailboard drive, and provides a new sailboard drive mechanism, which includes an azimuth rotation mechanism and a pitch rotation mechanism symmetrically installed on both sides of the azimuth rotation mechanism. The present invention adopts a structural form of one azimuth axis and two pitch axes, and the two pitch axis motion mechanisms are symmetrically distributed on both sides of the azimuth axis motion mechanism. Under the premise of driving the solar wing sailboard to rotate, it is possible to realize the connection between the upper cabin and the lower cabin of the entire satellite payload and keep the main structure of the entire satellite relatively fixed. The azimuth rotation mechanism and the pitch rotation mechanism are both designed with effective mechanical limit structures to ensure the normal operation of the equipment. The azimuth rotation mechanism adopts a symmetrical installation method of the drive component, the angle measurement component and the middle column. The drive component drives the azimuth axis system and the angle measurement component to work through the transmission method of the active small gear → the middle large gear → the passive small gear. Not only is the transmission efficiency high, but also a large wiring space is left in the middle of the entire sailboard drive mechanism.

Description

Technical Field

[0001] The present invention belongs to the technical field of spacecraft solar wing sailboard driving, and in particular relates to a novel sailboard driving mechanism. Background Art

[0002] With the rapid development of China's aerospace sector, the number of spacecraft launched every day is increasing day by day. Almost all spacecraft use solar panels to harvest energy and thus provide power for the entire spacecraft.

[0003] The main function of the sail driving mechanism is to drive the solar wing sail to rotate so that the normal of the solar wing sail basically coincides with the sunlight beam, so as to obtain as much solar energy as possible and convert it into electrical energy to supply the spacecraft.

[0004] As the energy supply for spacecraft, solar panels are crucial for their smooth rotation in space, precise solar orientation, and information feedback. The solar panel drive mechanism is the primary driver that drives the solar panels, achieving precise solar orientation and maximizing electrical energy for the satellite. It also transmits the power, current, and measurement signals generated by the solar panels to the satellite.

[0005] Traditional solar panel drive mechanisms primarily rotate the solar panels and provide real-time feedback on their motion parameters. These mechanisms are typically small and limited in functionality, limited to rotating the panels. The rapid development of the aerospace industry is placing new demands on the functionality of these drive mechanisms. Summary of the Invention

[0006] In order to solve the problems existing in the background technology, the present invention provides a new type of sailboard driving mechanism, which includes an azimuth rotation mechanism and a pitch rotation mechanism symmetrically installed on both sides of the azimuth rotation mechanism, wherein the azimuth rotation mechanism includes an upper flange, an intermediate column, a supporting outer ring, a support frame, a lower flange, a driving assembly, an angle measurement assembly, a Hall assembly, and a large gear; the upper flange and the lower flange are respectively fixedly connected to the intermediate column for connecting to the payload upper cabin and the payload lower cabin of the spacecraft; a large gear is fixedly connected to the lower flange; a support frame and a supporting outer ring are provided on the outer side of the intermediate column through a four-point contact ball bearing; a driving assembly and an angle measurement assembly are respectively provided on both sides of the support frame, and the driving assembly drives the support frame and the supporting outer ring to rotate around the intermediate column through gear transmission.

[0007] The pitch rotation mechanism includes a housing, a gland, a large gear pair, a small gear pair, a reduction motor assembly, and a resolver. The output force of the reduction motor is transmitted to the shaft of the large gear through the large and small gear pairs, driving the solar panels to rotate. The resolver detects the rotation angle and provides real-time feedback on the solar panel's rotation angle. The azimuth rotation mechanism is equipped with a Hall effect sensor on the lower flange and a Hall effect magnet on the support frame. The drive assembly includes a drive motor and a drive pinion, while the angle measurement assembly primarily comprises a follower pinion, a resolver shaft, a resolver, a resolver support, and a resolver housing. Both the drive pinion and the follower pinion mesh with the large gear fixed to the lower flange. Therefore, when the drive motor rotates, the large gear remains stationary, causing the drive assembly to rotate the support frame, the outer support ring, and the angle measurement assembly around the intermediate column. The follower pinion also rotates while simultaneously orbiting around the large gear, thereby acquiring rotational motion parameters.

[0008] In a preferred solution, a threaded hole is provided at the lower portion of the shell for connection to a flange of the azimuth rotation mechanism.

[0009] In a preferred solution, a pitch limit block is provided on the housing of the pitch rotation mechanism, and a limit screw is provided on the large gear; thereby mechanically limiting the pitch rotation mechanism.

[0010] In a preferred solution, the azimuth rotation mechanism is provided with a limiting mechanism, a limiting baffle is provided on the upper flange, and a limiting block is provided on the supporting outer ring.

[0011] The beneficial effects achieved by the present invention are:

[0012] First, the present invention adopts a structural form of one azimuth axis and two pitch axes. The two pitch axis motion mechanisms are symmetrically distributed on both sides of the azimuth axis motion mechanism. Under the premise of driving the solar wing sail panels to rotate, it can realize the connection between the upper and lower cabins of the entire satellite payload and keep the main structure of the entire satellite relatively fixed.

[0013] Second, effective mechanical limit structures are designed for the azimuth axis and pitch axis to ensure the normal operation of the equipment.

[0014] Third, the azimuth rotation mechanism adopts a symmetrical installation method of the drive component, the goniometer component and the middle column. The drive component drives the azimuth shaft system and the goniometer component through the transmission method of active small gear → middle large gear → passive small gear. Not only is the transmission efficiency high, but also a large wiring space is left in the middle of the entire sailboard drive mechanism, which is convenient for the passage of wiring harnesses between cabins and the layout of sailboard wiring harnesses, and the method of wiring through conductive slip rings is abolished to avoid the problem of excessive resistance at the conductive slip ring connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the sailboard driving mechanism described in this application.

[0016] Figure 2 It is a structural diagram of the direction of the angle measurement component of the azimuth rotation mechanism.

[0017] Figure 3 It is a structural diagram of the direction of the azimuth rotation mechanism drive component.

[0018] Figure 4 It is a cross-sectional view of the structure of the azimuth rotation mechanism drive component and the angle measurement component.

[0019] Figure 5 It is the transmission diagram of the azimuth rotation mechanism.

[0020] Figure 6 This is the structural diagram of the pitch rotation mechanism.

[0021] Figure 7 This is a structural diagram of the mechanical limit positions of the pitch rotation mechanism.

[0022] Figure 8 It is the mechanical limit position structure diagram of the azimuth rotation mechanism. DETAILED DESCRIPTION

[0023] The technical solutions of the present invention will be described clearly and completely below in conjunction with the drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] like Figure 1 As shown, the present application proposes a novel windsurfing driving mechanism, which includes an azimuth rotation mechanism 1 and a pitch rotation mechanism 2 symmetrically installed on both sides of the azimuth rotation mechanism 1 .

[0025] like Figure 2 、 Figure 3 As shown, the azimuth rotation mechanism 1 comprises eight components: an upper flange 3, an intermediate column 4, a support outer ring 5, a support frame 9, a lower flange 7, a drive assembly 10, an angle measurement assembly 8, and a Hall effect assembly 6. The intermediate column 4 forms the main body of the sailboard drive mechanism. The upper flange 3 and lower flange 7 are screwed to the intermediate column 4, respectively, for connection to the upper and lower payload compartments of the spacecraft. The support frame 9 and support outer ring 5 are mounted on the outer side of the intermediate column 4 via four-point contact ball bearings. The drive assembly 10 and angle measurement assembly 8 are mounted on either side of the support frame 9, respectively. The drive assembly 10 drives the support frame 9 and support outer ring 5 to rotate about the intermediate column 4 via a gear transmission. The angle measurement assembly 8 uses a gear transmission to read the motion parameters of the support frame 9 and support outer ring 5 and feeds them back to the host computer.

[0026] like Figure 4 、 Figure 5 As shown, the drive assembly 10 primarily comprises a drive motor 15 and a drive pinion 18, while the goniometer assembly 8 primarily comprises a follower pinion 16, a resolver shaft 14, a resolver 11, a resolver support 13, and a resolver housing 12. Both the drive pinion 18 and the follower pinion 16 mesh with a large gear 17 secured to the lower flange 7. Consequently, when the drive motor 15 rotates, the large gear 17 remains stationary, causing the drive assembly 10 to drive the support frame 9, the support outer ring 5, and the goniometer assembly 8 to rotate about the intermediate column 4. The follower pinion 16 also rotates while simultaneously orbiting around the large gear 17, thereby acquiring rotational motion parameters and providing feedback to a host computer.

[0027] like Figure 5 As shown, the azimuth rotation mechanism 1 is provided with a Hall sensor 20 on the lower flange and two Hall magnets 19 on the support frame 9, so as to detect and provide feedback on the rotational motion of the azimuth axis when the angle measuring component 8 fails.

[0028] like Figure 6 As shown, the pitch rotation mechanism comprises a housing 22, a gland 24, a pair of large and small gears 23 and 26, a reduction motor assembly 25, and a resolver 21. The output of the reduction motor 25 is transmitted via the large and small gears 23 and 26 to the shaft of the large gear 17, driving the solar panels. The coaxially mounted resolver 21 detects the rotation angle, providing real-time feedback. The lower portion of the housing 22 has a threaded hole for connection to the flange of the azimuth rotation mechanism 1.

[0029] like Figure 7 As shown, the pitch mechanism 2 is equipped with both software and mechanical limit modes. Pitch limit blocks 27 are installed on the housing 22 of the pitch mechanism 2 on both sides, and limit screws 28 are installed on the large gear 17. This mechanically limits the pitch mechanism, preventing software control failures from causing the turntable to run away and damage the wiring harness.

[0030] like Figure 8 As shown, the azimuth rotation mechanism 1 is provided with three limit modes: software limit, electric limit and mechanical limit. A limit baffle 29 is provided on the upper flange 3, and a limit block 30 is provided on the supporting outer ring to prevent the turntable from running away due to software control failure and causing damage to the wiring harness.

[0031] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "install", "connect", and "connect" should be understood in a broad sense, which can be mechanical connection or electrical connection, or internal communication between two components, or direct connection. "Up", "down", "left", and "right" are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may change; secondly: in the drawings of the embodiments disclosed in the present invention, only the structures involved in the embodiments disclosed in the present invention are involved. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other; finally: the above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sailboard driving mechanism, characterized in that: It comprises: an azimuth rotation mechanism (1) and a pitch rotation mechanism (2) symmetrically mounted on both sides of the azimuth rotation mechanism (1), wherein: The azimuth rotation mechanism (1) comprises: Upper flange (3), middle column (4), supporting outer ring (5), supporting frame (9), lower flange (7), driving assembly (10), angle measuring assembly (8), Hall assembly (6), large gear (17); The upper flange (3) and the lower flange (7) are respectively fixedly connected to the middle column (4) and are used for connecting with the upper load cabin and the lower load cabin of the spacecraft; the lower flange (7) is fixedly connected with a large gear (17); the outer side of the middle column (4) is provided with a support frame (9) and a support outer ring (5) through a four-point contact ball bearing; the two sides of the support frame (9) are respectively provided with a driving assembly (10) and an angle measuring assembly (8); the driving assembly (10) drives the support frame (9) and the support outer ring (5) to rotate around the middle column (4) through gear transmission; The pitch rotation mechanism (2) comprises: Housing (22), gland (24), large gear pair (23), small gear pair (26), reduction motor assembly (25), rotary transformer (21); The output force of the reduction motor (25) is transmitted to the shaft of the large gear (17) through the large gear pair (23) and the small gear pair (26), driving the solar wing to rotate. The rotary transformer (21) detects the rotation angle and is used to feed back the solar wing rotation angle information in real time.

2. A sailboard driving mechanism according to claim 1, characterized in that: The azimuth rotation mechanism (1) is provided with a Hall sensor (20) on the lower flange, and a Hall magnet (19) is provided on the support frame (9).

3. The sailboard driving mechanism according to claim 1, characterized in that: The driving assembly (10) comprises: a driving motor (15) and a driving pinion (18); the angle measuring assembly (8) mainly comprises a follower pinion (16), a rotary shaft (14), a rotary transformer (11), a rotary support (13) and a rotary cover (12); wherein the driving pinion (18) and the follower pinion (16) are both engaged with a large gear (17) fixed to a lower flange (7); therefore, when the driving motor (15) rotates, since the large gear (17) remains stationary, the driving assembly (10) drives the support frame (9), the supporting outer ring (5) and the angle measuring assembly (8) to rotate around the middle column (4), and the follower pinion (16) also rotates around the large gear (17) while revolving, thereby obtaining the rotational motion parameters.

4. The sailboard driving mechanism according to claim 3, characterized in that: A pitch limiting block (27) is provided on the housing (22) of the pitch rotation mechanism (2), and a limiting screw (28) is provided on the large gear (17); thereby mechanically limiting the pitch rotation mechanism.

5. The sailboard driving mechanism according to claim 1, characterized in that: The azimuth rotation mechanism (1) is provided with a limit mechanism, a limit blocking piece (29) is provided on the upper flange (3), and a limit block (30) is provided on the supporting outer ring (5).

6. The sailboard driving mechanism according to claim 1, characterized in that: The lower portion of the housing (22) is provided with a threaded hole for connection with the flange of the azimuth rotation mechanism (1).

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