A limiting component and limiting method for a space drive device

Abstract

This invention discloses a limiting component and method for a space drive device. The limiting component includes a spring limiting mechanism, a shaft housing, and a flange. A maximum position marker block is provided on the side of the shaft housing, and the spring limiting mechanism is mounted on the side of the shaft housing. The shaft housing is fixed to the space drive device, and the flange moves with the space drive device. A flange boss is provided on the side of the flange. The spring limiting mechanism achieves spring-loaded limiting through a spring and a limiting block. The flange achieves unidirectional rotational limiting relative to the shaft housing through the flange boss, the maximum position marker block, and the spring limiting mechanism. The limiting component and method of this invention effectively overcome the shortcomings of traditional electrical limiting components and methods that cannot operate stably in low-temperature and vacuum space environments, and are suitable for space drive devices.

Description

Technical Field

[0001] This invention relates to a limiting component and limiting method for a space drive device, belonging to the field of space mechanism design technology. Background Technology

[0002] The dual-axis solar panel drive unit (BSADA) is a crucial space propulsion device responsible for transmitting all the satellite's energy, supporting the solar panels, and withstanding the impact loads of panel deployment. It is a continuously operating moving component throughout the satellite's entire lifecycle and, due to its complex structure, is a core component of the satellite. Currently, direct-drive dual-axis solar panel drives require rotation from the clamping position to the reference position and oscillation within a certain range, but cannot reverse from the reference position back to the clamping position. Therefore, this space propulsion device requires a unidirectional limiting component and method that can stably operate in space.

[0003] Currently, commonly used limiting components are electrical limiting components and fixed mechanical limiting components. Electrical limiting components rely on electrical signal sensors, but due to the complex physical environment of space, such as low temperatures, vacuum, and radiation, these sensors may fail after a period of service, leading to the loss of the limiting function. Fixed mechanical limiting components have immovable limiting blocks, thus failing to achieve unidirectional limiting and cannot meet the limiting requirements of dual-axis solar panel drive devices. Since existing limiting components and methods cannot meet the limiting requirements of space drive devices, there is an urgent need to propose a limiting component and method that can achieve unidirectional limiting and operate stably in space. Summary of the Invention

[0004] The technical problem solved by this invention is that existing limiting components and methods cannot meet the requirements of unidirectional limiting of space drive devices and stable operation in space. Therefore, a limiting component and method for space drive devices are proposed.

[0005] The present invention solves the above-mentioned technical problem by means of the following technical solution: a limiting component for a space drive device, comprising: a spring limiting mechanism, a shaft housing and a flange;

[0006] The side of the shaft housing is provided with a maximum position marker block, and a spring limiting mechanism is installed on the side of the shaft housing;

[0007] The shaft housing is fixed on the spatial drive device, the flange moves with the spatial drive device, and a flange boss is provided on the side of the flange.

[0008] The spring limiting mechanism achieves spring-like limiting through the spring and the limiting block; the flange achieves unidirectional rotation limiting relative to the shaft housing through the flange boss, the maximum position mark block and the spring limiting mechanism.

[0009] Furthermore, the spring limiting mechanism includes a base, a limiting block, a spring, and a pressure plate;

[0010] The base is fan-shaped, with a first mounting groove and a second mounting groove at both ends. A first mounting hole and a second mounting hole are respectively provided in the first mounting groove and the second mounting groove. A groove is provided in the middle of the base to form a mating part. A circular mating groove is provided at one corner of the mating part, and a first spring hole and a second spring hole are provided on the side wall. A third mounting hole and a fourth mounting hole are provided on the base, and the third mounting hole and the fourth mounting hole are respectively located on both sides of the mating part.

[0011] The limiting block is polygonal, with a circular block at one corner;

[0012] The spring is zigzag-shaped and includes a first mounting end, a second mounting end, and a pressing end;

[0013] The limiting block is embedded in the circular mating groove of the base through the circular block, and can slide relative to each other in the mating part; the first mounting end and the second mounting end of the spring are respectively embedded in the first spring hole and the second spring hole, and the limiting block is pre-tightened through the top pressing end; the pressure plate is connected to the third mounting hole and the fourth mounting hole of the base through the fifth mounting hole and the sixth mounting hole on both sides, and presses the limiting block.

[0014] Furthermore, a first mounting platform and a second mounting platform are provided on the side of the shaft housing, and the two ends of the base are respectively connected to the first mounting platform and the second mounting platform.

[0015] Furthermore, an observation groove is provided in the middle of the pressure plate.

[0016] Furthermore, molybdenum disulfide is sputtered onto the surface of the limiting block.

[0017] The limiting method according to the above-mentioned limiting component for a space drive device includes:

[0018] Install the limiting block and spring into the mating part of the base, install the pressure plate on the base, install the base on the shaft housing, and fix the shaft housing on the space drive device;

[0019] The flange moves with the space drive device. When the flange boss moves from the outside of the second mounting platform to the maximum position mark block, the flange boss contacts the limit block and squeezes the limit block compression spring, causing the flange boss to pass over the limit block.

[0020] After the flange boss passes the limit block, the spring presses the limit block again, causing the limit block to extend out of the mating part. When the flange boss moves from the outside of the first mounting platform to the second mounting platform, the position of the limit block is constrained by the base, and the flange boss cannot push the limit block open. This allows the space drive device to move only between the outside of the first mounting platform and the maximum position marker block, achieving unidirectional limiting.

[0021] The advantages of this invention compared to the prior art are:

[0022] This invention provides a limiting component and method for a space drive device. Unidirectional limiting is achieved through the sliding of a limiting block, solving the problem that traditional fixed mechanical limiting components cannot achieve unidirectional limiting. The proposed limiting component contains no electrical signal sensors and can operate stably for extended periods in complex physical environments such as low temperatures, vacuum, and irradiation in space, thus solving the problem that traditional electrical limiting components cannot operate stably in space. Furthermore, by sputtering molybdenum disulfide onto the surface of the limiting block, jamming during space operation is prevented, ensuring the high reliability of the space drive device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the limiting component of the present invention used in a space driving device;

[0024] Figure 2 This is a schematic diagram of the base, limiting block, spring, and pressure plate of the limiting component for the space driving device of the present invention;

[0025] Figure 3 This is a schematic diagram of the flange structure of the limiting assembly for the space drive device of the present invention;

[0026] Figure 4 This is a schematic diagram of the shaft housing of the limiting component for the space drive device of the present invention.

[0027] Figure label:

[0028] 100: Base; 101: First mounting groove; 102: Second mounting groove; 103: First mounting hole; 104: Second mounting hole; 105: Mating part; 106: Circular mating groove; 107: First spring hole; 108: Second spring hole; 109: Third mounting hole; 110: Fourth mounting hole; 111: Limiting block; 112: Circular block; 113: Spring; 114: First mounting end; 115: Second mounting end; 116: Top pressing end; 117: Pressure plate; 118: Fifth mounting hole; 119: Sixth mounting hole; 120: Observation groove; 200: Flange; 201: Boss; 300: Shaft housing; 301: Maximum position marker block; 302: First mounting platform; 303: Second mounting platform; 304: Seventh mounting hole; 305: Eighth mounting hole. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] like Figure 1 The figure shown is a limiting assembly for a space drive device according to the present invention, including: a base 100, a limiting block 111, a spring 113, a pressure plate 117, a flange 200 and a shaft housing 300;

[0031] like Figure 2 As shown, the base 100 is fan-shaped in general. The base 100 has a first mounting groove 101 and a second mounting groove 102 at both ends. The first mounting groove 101 has a first mounting hole 103, and the second mounting groove 102 has a second mounting hole 104. The middle part of the base 100 is a mating part 105. The mating part 105 has a circular mating groove 106 near one corner of the first mounting groove 101. The side wall of the mating part 105 has a first spring hole 107 and a second spring hole 108. The mating part 105 has a third mounting hole 109 and a fourth mounting hole 110 on both sides.

[0032] like Figure 2 As shown, the limiting block 111 is a polygon, and one corner of it has a circular block 112.

[0033] like Figure 2 As shown, the spring 113 is zigzag-shaped and has a first mounting end 114, a second mounting end 115 and a pressing end 116.

[0034] like Figure 2 As shown, the pressure plate 117 is fan-shaped, with a fifth mounting hole 118 and a sixth mounting hole 119 at both ends, and an observation groove 120 in the middle.

[0035] like Figure 3 The image shows flange 200, which has a boss 201 on its side.

[0036] like Figure 4 The image shows a shaft housing 300. The side of the shaft housing 300 has a maximum position marker block 301. The side of the shaft housing 300 also has a first mounting platform 302 and a second mounting platform 303. The first mounting platform 302 has a seventh mounting hole 304, and the second mounting platform 303 has an eighth mounting hole 305.

[0037] The limiting block 111 is embedded in the circular mating groove 106 of the base 100 through the circular block 112, so that the limiting block 111 slides relative to the mating part 105 of the base 100; the spring 113 is embedded in the first spring hole 107 and the second spring hole 108 of the base 100 through the first mounting end 114 and the second mounting end 115, and at the same time, the spring 113 applies a preload force to the limiting block 111 through the top pressing end 116; the pressure plate 117 is connected to the third mounting hole 109 and the fourth mounting hole 110 of the base 100 through the fifth mounting hole 118 and the sixth mounting hole 119 respectively, pressing the limiting block 111; the first mounting hole 103 and the second mounting hole 104 of the base 100 are connected to the seventh mounting hole 304 and the eighth mounting hole 305 of the shaft housing 300, so that the base 100 is fixed to the side of the shaft housing 300.

[0038] Molybdenum disulfide is sputtered onto the surface of the limiting block 111 to prevent the limiting block 111 from getting stuck during space service.

[0039] A limiting method is implemented based on a limiting component for a space drive device, the specific steps of which include:

[0040] The limiting block 111, pressure plate 117, and spring 113 are installed on the base 100, the base 100 is installed on the shaft housing 300, the shaft housing 300 is installed on the outside of the space drive device, and the flange 200 is installed on the end face of the space drive device. Initially, the flange boss 201 is located on the outside of the second mounting platform 305.

[0041] The flange 200 moves with the space drive device, moving from the outside of the second mounting platform 305 to the maximum position marker block 301. During this process, when the flange boss 201 contacts the limit block 111, it squeezes the limit block 111 to compress the spring 113, causing the flange 200 to pass over the limit block 111.

[0042] After flange 200 passes limit block 111, spring 113 presses against limit block 111 again, and the component state is as follows. Figure 1 As shown. When the flange 200 moves from the outside of the first mounting platform 302 to the outside of the second mounting platform 305 (the area between the first mounting platform 302 and the second mounting platform 305 is defined as the inside), the position of the limiting block 111 is completely constrained by the base 100. The flange boss 201 cannot push open the limiting block 111, so that the space drive device can only move between the outside of the first mounting platform 302 and the maximum position marker block 301, thus achieving unidirectional limiting.

[0043] The limiting component and limiting method of this invention for space drive devices were applied to a dual-axis sail drive device. Verification showed that the drive device can pass over this limiting component during movement, rotating from a -180° position to a 0° position. After passing this limiting component, it cannot reverse over it, i.e., it cannot rotate from a 0° position to a 180° position, achieving unidirectional limiting. Furthermore, the limiting component can adapt to multi-physics coupled space environments such as low temperature, vacuum, and irradiation, and can withstand a driving torque load of 80 N·m, meeting the requirements for space service.

[0044] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

[0045] The contents not described in detail in this specification are common knowledge to those skilled in the art.

Claims

1. A limiting component for a spatial drive device, characterized in that, include: Spring limiting mechanism, shaft housing (300) and flange (200); The maximum position marker block (301) is provided on the side of the shaft housing (300), and the spring limiting mechanism is installed on the side of the shaft housing (300); The shaft housing (300) is fixed on the space drive device, and the flange (200) moves with the space drive device. The flange boss (201) is provided on the side of the flange (200). The spring limiting mechanism achieves spring-like limiting through the spring (113) and the limiting block (111); the flange (200) achieves unidirectional rotation limiting relative to the shaft housing (300) through the flange boss (201), the maximum position mark block (301) and the spring limiting mechanism. The spring limiting mechanism includes a base (100), a limiting block (111), a spring (113), and a pressure plate (117). The base (100) is fan-shaped. A first mounting groove (101) and a second mounting groove (102) are provided at both ends of the base (100). A first mounting hole (103) and a second mounting hole (104) are respectively provided in the first mounting groove (101) and the second mounting groove (102). A groove is provided in the middle of the base (100) to form a mating part (105). A circular mating groove (106) is provided at one corner of the mating part (105), and a first spring hole (107) and a second spring hole (108) are provided on the side wall. A third mounting hole (109) and a fourth mounting hole (110) are provided on the base (100). The third mounting hole (109) and the fourth mounting hole (110) are respectively located on both sides of the mating part (105). The limiting block (111) is a polygon with a circular block (112) at one corner. The spring (113) is zigzag-shaped and includes a first mounting end (114), a second mounting end (115), and a pressing end (116). The limiting block (111) is embedded in the circular mating groove (106) of the base (100) through the circular block (112), and can slide relative to each other in the mating part (105); the first mounting end (114) and the second mounting end (115) of the spring (113) are respectively embedded in the first spring hole (107) and the second spring hole (108), and the limiting block (111) is pre-tightened through the top pressing end (116); the pressure plate (117) is connected to the third mounting hole (109) and the fourth mounting hole (110) of the base (100) through the fifth mounting hole (118) and the sixth mounting hole (119) on both sides, and presses the limiting block (111).

2. A limiting assembly for a space drive device according to claim 1, characterized in that, The side of the shaft housing (300) is provided with a first mounting platform (302) and a second mounting platform (303), and the two ends of the base (100) are respectively connected to the first mounting platform (302) and the second mounting platform (303).

3. A limiting assembly for a space drive device according to claim 1, characterized in that, An observation slot (120) is provided in the middle of the pressure plate (117).

4. A limiting assembly for a space drive device according to claim 1, characterized in that, The surface of the limiting block (111) is sputtered with molybdenum disulfide.

5. A limiting method for a limiting component of a space drive device according to any one of claims 1 to 4, characterized in that, include: Install the limiting block (111) and spring (113) in the mating part (105) of the base (100), and install the pressure plate (117) on the base (100). Install the base (100) on the shaft housing (300); fix the shaft housing (300) on the space drive device. The flange (200) moves with the space drive device. When the flange boss (201) moves from the outside of the second mounting platform (305) to the maximum position marker block (301), the flange boss (201) contacts the limit block (111) and squeezes the limit block (111) to compress the spring (113), so that the flange boss (201) passes over the limit block (111). After the flange boss (201) passes the limit block (111), the spring (113) presses the limit block (111) again, causing the limit block (111) to extend out of the mating part (105). When the flange boss (201) moves from the outside of the first mounting platform (302) to the second mounting platform (305), the position of the limit block (111) is constrained by the base (100), and the flange boss (201) cannot push open the limit block (111), so that the space drive device can only move between the outside of the first mounting platform (302) and the maximum position marker block (301), thus achieving unidirectional limiting.

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