阅读说明：本技术 航天器及其弹簧预紧高刚度锁定装置 (Spacecraft and spring pre-tightening high-rigidity locking device thereof ) 是由 丁海鑫 赵发刚 王智磊 薛景赛 赵枝凯 于 2019-11-21 设计创作，主要内容包括：本发明提供了一种航天器及其弹簧预紧高刚度锁定装置,包括底座、支架、锁定杆、主钩、副钩、第一弹簧、第二弹簧和锁定轮,底座内部为空腔结构,支架位于底座的顶部,锁定杆的一端垂直插入于空腔内并与主钩挡板相接触,另一端向空腔外延伸并与锁定轮连接,主钩包括主钩钩部和主钩杆部,主钩杆部的一端与主钩钩部相连接,另一端插入空腔内,主钩钩部设置在底座外部,第一弹簧与第二弹簧均位于空腔内,锁定杆、第一弹簧、第二弹簧和锁定轮相配合工作,副钩与主钩相扣合锁紧。本发明可以通过弹簧预紧的方式大大提高锁定装置的刚度,结构设计合理,体积紧凑,能够适用于卫星等航天器中的大型平面展开锁定,具有较高的刚度。(The invention provides a spacecraft and a spring pre-tightening high-rigidity locking device thereof, which comprise a base, a support, a locking rod, a main hook, an auxiliary hook, a first spring, a second spring and a locking wheel, wherein the base is internally provided with a cavity structure, the support is positioned at the top of the base, one end of the locking rod is vertically inserted into the cavity and is contacted with a baffle of the main hook, the other end of the locking rod extends outwards from the cavity and is connected with the locking wheel, the main hook comprises a main hook part and a main hook rod part, one end of the main hook rod part is connected with the main hook part, the other end of the main hook rod part is inserted into the cavity, the main hook part is arranged outside the base, the first spring and the second spring are both positioned in the cavity, the locking rod, the first spring, the second spring and the locking wheel are. The invention can greatly improve the rigidity of the locking device by a spring pre-tightening mode, has reasonable structural design and compact volume, can be suitable for unfolding and locking large planes in spacecrafts such as satellites and the like, and has higher rigidity.)

1. A spring pre-tightening high-rigidity locking device is characterized by comprising a base (1), a bracket (2), a locking rod (3), a main hook (4), an auxiliary hook (5), a first spring (6), a second spring (7) and a locking wheel (8),

the interior of the base (1) is of a cavity structure, the bracket (2) is positioned at the top of the base (1), one end of the locking rod (3) is vertically inserted into the cavity and is contacted with the main hook baffle (9), the other end of the locking rod extends out of the cavity and is connected with the locking wheel (8),

the main hook (4) comprises a main hook part (41) and a main hook rod part (42), one end of the main hook rod part (42) is connected with the main hook part (41), the other end of the main hook rod part is inserted into the cavity, the main hook part (41) is arranged outside the base (1), the first spring (6) and the second spring (7) are both positioned in the cavity,

the locking rod (3), the first spring (6), the second spring (7) and the locking wheel (8) work in a matched mode, so that the auxiliary hook (5) is buckled and locked with the main hook (4).

2. The spring-preloaded high-stiffness locking device according to claim 1, wherein the bottom of the locking rod (3) is in contact with the main hook fence (9), and the locking rod (3) is used for limiting the main hook fence (9).

3. The spring-pretensioned high-stiffness locking device according to claim 1, wherein the first spring (6) is a pretension spring and the second spring (7) is a locking spring.

4. The spring-preloaded high-stiffness locking device of claim 1, wherein said locking device further comprises a locking wheel runner (10), said locking wheel (8) being journaled for rotation by said locking wheel runner (10).

5. The spring-pretensioned high-stiffness locking device according to claim 4, wherein the locking wheel runner (10) is a circumferential runner, and the locking wheel runner (10) is adapted to the locking wheel (8).

6. The spring-preloaded high-stiffness locking device of claim 1, wherein said main hook stem portion (42) is elastically deformable.

7. The spring-preloaded high-rigidity locking device according to claim 6, wherein the contact surfaces of the main hook (4) and the auxiliary hook (5) are provided with rounded corners, and the main hook (4) is matched with the auxiliary hook (5).

8. The spring-preloaded high-rigidity locking device according to claim 5, wherein a locking groove (11) is further formed in the locking wheel sliding groove (10), after the locking wheel (8) is unfolded, the locking groove (11) is formed in the locking groove (11), and the locking groove (11) is matched with the locking wheel (8).

9. The spring-preloaded high-stiffness locking device of claim 1, wherein the bottom of the locking lever (3) is disengaged from the main hook flapper (9) after deployment.

10. A spacecraft comprising a spring-pretensioned high stiffness locking device according to any of claims 1 to 9.

Technical Field

The invention relates to a spacecraft structure and a mechanism, in particular to a spacecraft and a spring pre-tightening high-rigidity locking device thereof, which are suitable for locking large-scale planes in spacecrafts such as satellites.

Background

With the development of spacecraft technology, large surfaces such as: solar cell arrays, antennas, reflectors and the like are widely applied to the spacecraft, the requirement on the rigidity after locking is increasingly higher, but the rigidity of a conventional locking mode is lower, so that the solar cell arrays, the antennas, the reflectors and the like are not suitable for being applied to the future spacecraft. The above technical problems have created a need for large-scale planar high stiffness locking on spacecraft.

Chinese patent application No. CN201810749925.4 discloses a follow-up unfolding locking assembly, which includes a positioning pin, a lever shaft, a lever seat, a locking lever, a push rod seat, a push rod, and a push rod spring, wherein the positioning pin is mounted on a movable member, the lever seat is mounted on a fixed member, the movable member and the fixed member are connected by a hinge, the locking lever is mounted on the lever seat by the lever shaft, the locking lever rotates around the lever shaft, the push rod seat is mounted on the lever seat, the push rod spring is disposed inside the push rod seat, the push rod is mounted in the push rod seat, and the push rod translates along the push rod seat. But the structural design is unreasonable, the working principle is more complex, and the later maintenance department is convenient.

Therefore, a spacecraft and a spring pre-tightening high-rigidity locking device thereof are needed to be designed, wherein the spacecraft is reasonable in structural design, simple in structure, compact in size, capable of being suitable for large-scale plane unfolding and locking in spacecrafts such as satellites and the like, and high in rigidity.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a spacecraft and a spring pre-tightening high-rigidity locking device thereof.

The invention provides a spring pre-tightening high-rigidity locking device which comprises a base, a bracket, a locking rod, a main hook, an auxiliary hook, a first spring, a second spring and a locking wheel,

the inner part of the base is of a cavity structure, the bracket is positioned at the top of the base, one end of the locking rod is vertically inserted into the cavity and is contacted with the main hook baffle, the other end of the locking rod extends out of the cavity and is connected with the locking wheel,

the main hook comprises a main hook part and a main hook rod part, one end of the main hook rod part is connected with the main hook part, the other end of the main hook rod part is inserted into the cavity, the main hook part is arranged outside the base, the first spring and the second spring are both positioned in the cavity,

the locking rod, the first spring, the second spring and the locking wheel work in a matched mode, so that the auxiliary hook and the main hook are buckled and locked.

Further, the bottom of the locking rod is in contact with the main hook baffle, and the locking rod is used for limiting the main hook baffle.

Further, the first spring is a pre-tightening spring, and the second spring is a locking spring.

Furthermore, the locking device also comprises a locking wheel sliding groove, and the locking wheel rotates in a fixed shaft mode through the locking wheel sliding groove.

Furthermore, the locking wheel sliding groove is a sliding groove with a circumferential structure, and the locking wheel sliding groove is matched with the locking wheel.

Further, the main hook rod portion can be elastically deformed.

Furthermore, the surfaces of the main hook, which are in contact with the auxiliary hook, are provided with rounded corners, and the main hook is matched with the auxiliary hook.

Furthermore, a locking groove is further formed in the locking wheel sliding groove, after the locking wheel sliding groove is unfolded, the locking wheel enters the locking groove, and the locking groove is matched with the locking wheel.

Further, after deployment, the bottom of the locking lever is separated from the main hook fence.

Correspondingly, the invention further provides a spacecraft which comprises the spring pre-tightening high-rigidity locking device.

Compared with the prior art, the invention has the following beneficial effects:

(1) according to the spring pre-tightening high-rigidity locking device, the rigidity of the locking device can be greatly improved in a spring pre-tightening mode, the structural design is reasonable, the structure is simple, the size is compact, the spring pre-tightening high-rigidity locking device can be suitable for unfolding and locking large planes in spacecrafts such as satellites, and the spring pre-tightening high-rigidity locking device has high rigidity;

(2) according to the spring pre-tightening high-rigidity locking device, the locking rod, the first spring, the second spring and the locking wheel work in a matched mode, the auxiliary hook and the main hook can be locked in a buckled mode, the locking effect is good, the spring pre-tightening high-rigidity locking device can be widely applied to spacecrafts, and the spring pre-tightening high-rigidity locking device has good market prospect and application prospect.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic perspective view of a spring pre-tensioned high stiffness locking device of the present invention;

FIG. 2 is a side view of the spring-preloaded high stiffness locking device of the present invention;

FIG. 3 is a schematic illustration of the locking process of the spring-preloaded high stiffness locking device of the present invention;

FIG. 4 is a schematic illustration of the locking process of the spring-preloaded high stiffness locking device of the present invention;

fig. 5 is a schematic diagram of the locking process of the spring-preloaded high-stiffness locking device of the present invention.

Wherein corresponding reference numerals in the figures are: 1-base, 2-bracket, 3-locking rod, 4-main hook, 41-main hook part, 42-main hook rod part, 5-auxiliary hook, 6-first spring, 7-second spring, 8-locking wheel, 9-main hook baffle, 10-locking wheel chute and 11-locking groove.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.