CN214776673U - Zero-gravity unfolding device - Google Patents
Zero-gravity unfolding device Download PDFInfo
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- CN214776673U CN214776673U CN202120380731.9U CN202120380731U CN214776673U CN 214776673 U CN214776673 U CN 214776673U CN 202120380731 U CN202120380731 U CN 202120380731U CN 214776673 U CN214776673 U CN 214776673U
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Abstract
The utility model relates to a zero gravity test field discloses a zero gravity expandes device. The test product is loaded through the bearing mechanism, the gravity of the angle adjusting mechanism and the test product is balanced through the gravity unloading mechanism, the angle adjusting mechanism and the gravity unloading mechanism are driven by the position adjusting mechanism to move along the first direction, the second direction and the third direction so as to adjust the position of the test product, the bearing mechanism is driven by the angle adjusting mechanism to rotate along the first axis, the second axis and the third axis respectively so as to adjust the angle of the test product, the posture adjustment of the test product with six degrees of freedom is realized, the test product has the capability of flexibly unloading the gravity during ground unfolding test, the gravity can be fully unloaded, the operation is convenient, the implementation is easy, the cost is controllable, the test product can adapt to the unfolding form of three-dimensional directions and curved motion tracks, and the ground zero-gravity unfolding test requirement of the unfolding mechanisms of various spacecrafts is met.
Description
Technical Field
The utility model relates to a zero gravity test field especially relates to a zero gravity expandes device.
Background
With the development of aerospace technology, more and more satellite components are required to be deployed in orbit. Because the spacecraft is in a weightless state in a space environment, the in-orbit stress state of each component of the spacecraft is different from the ground, and if the unfolding performance of the components in the space environment is verified on the ground, the influence of the ground gravity on the unfolding components needs to be solved, and the zero-gravity state is simulated.
At present, the expansion test of mechanism products such as satellite antennas generally adopts modes such as truss hanging, helium balloon hanging, air floatation and the like, and the hanging device used at present can only move in a two-dimensional direction, so that the gravity unloading is insufficient, and the test requirement is difficult to meet. The gravity can be well unloaded by the method of suspending and unloading the gravity by the balloon, but the problems of inconvenient inflation, difficult control, easy pollution caused by dust on the surface of the balloon and the like exist. The air floatation gravity unloading mode needs to be provided with a specially-made air foot and a special tool, the implementation is complex and the test cost is high.
SUMMERY OF THE UTILITY MODEL
Based on the above problem, an object of the utility model is to provide a zero gravity expandes device and expansion method increases the motion degree of freedom when experimental product expandes the experiment, and fully uninstallation gravity, the operation is convenient, easy to carry out, and the cost is controllable.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a zero-gravity deployment device, comprising:
the bearing mechanism is used for bearing a test product;
the angle adjusting mechanism is used for driving the bearing mechanism to rotate along a first axis, a second axis and a third axis respectively so as to adjust the angle of the test product, and the first axis, the second axis and the third axis are mutually perpendicular in pairs;
the gravity unloading mechanism is used for balancing the gravity of the angle adjusting mechanism and the test product;
and the position adjusting mechanism is used for driving the angle adjusting mechanism and the gravity unloading mechanism to move along a first direction, a second direction and a third direction so as to adjust the position of the test product, wherein the first direction, the second direction and the third direction are mutually vertical in pairs.
As the utility model discloses a zero gravity expandes device's preferred scheme, bear the mechanism and include the connecting seat and hang the arm, the one end that hangs the arm set up in on the connecting seat, the other end that hangs the arm is used for bearing test product.
As the utility model discloses a zero gravity expandes device's preferred scheme, it is provided with two, two to hang the arm interval set up in on the connecting seat.
As the utility model discloses a zero gravity expandes preferred scheme of device, angular adjustment mechanism includes the articulated seat of first articulated seat and second, bear the mechanism and follow first axis rotate set up in on the first articulated seat, first articulated seat is followed the second axis rotates set up in on the articulated seat of second, the articulated seat of second is followed third axis rotates set up in on the gravity uninstallation mechanism.
As the utility model discloses a zero gravity expandes preferred scheme of device, angle adjustment mechanism still includes first pivot, second pivot and third pivot, bear the mechanism and pass through first pivot with first articulated seat rotates to be connected, first articulated seat passes through the second pivot with the articulated seat of second rotates to be connected, the articulated seat of second passes through the third pivot with gravity uninstallation mechanism rotates to be connected.
As the utility model discloses a zero gravity expandes preferred scheme of device, gravity uninstallation mechanism includes rope, counterweight and fixed pulley, the fixed pulley rotate set up in on the position adjustment mechanism, the rope hang in on the fixed pulley, the one end of rope with angle adjustment mechanism connects, the other end of rope with the counterweight is connected.
As the utility model discloses a zero gravity expandes preferred scheme of device, position adjustment mechanism includes first guide rail, second guide rail and jib, follow respectively at the both ends of second guide rail first direction slide set up in on the first guide rail, the one end of jib is followed second direction slide set up in on the second guide rail, the other end of jib with gravity uninstallation mechanism connects.
As the utility model discloses a zero gravity expandes preferred scheme of device, the jib includes first pole and second pole, first pole is followed third side position set up adjustably in on the second pole.
As the utility model discloses a zero gravity expandes preferred scheme of device, the second rod cover is located on the first pole, be provided with the locating hole on the first pole, be provided with the bar hole on the second pole, the fastener runs through the bar hole, and with the locating hole is connected.
The utility model has the advantages that:
the utility model provides a zero gravity unfolding device and an unfolding method, when the unfolding test of a test product is carried out, the test product is carried through the bearing mechanism, the gravity of the angle adjusting mechanism and the test product is balanced through the gravity unloading mechanism, the angle adjusting mechanism and the gravity unloading mechanism are driven to move along the first direction, the second direction and the third direction through the position adjusting mechanism so as to adjust the position of the test product, the bearing mechanism is driven to rotate along the first axis, the second axis and the third axis respectively through the angle adjusting mechanism so as to adjust the angle of the test product, the pose adjustment of six degrees of freedom of the test product is realized, the device has the capability of flexibly unloading the gravity during the ground unfolding test, the gravity can be fully unloaded, the operation is convenient, the implementation is easy, the cost is controllable, the unfolding form of the three-dimensional direction and the curved motion track can be adapted, the limitation that the existing conventional hanging type antenna unfolding device can only move in the two-dimensional direction is broken, the problems of inconvenience in inflation, difficulty in control, dust pollution on the surface of the balloon and the like of a balloon hanging and unloading mode are solved, and the ground zero-gravity unfolding test requirements of various spacecraft unfolding mechanisms are met.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a zero-gravity deployment device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a bearing mechanism and an angle adjusting mechanism in a zero-gravity unfolding apparatus according to an embodiment of the present invention;
fig. 3 is an exploded schematic view of a bearing mechanism and an angle adjusting mechanism in a zero-gravity deployment apparatus according to an embodiment of the present invention.
In the figure:
1-a carrying mechanism; 2-an angle adjusting mechanism; 3-gravity unloading mechanism; 4-a position adjustment mechanism;
11-a connecting seat; 12-a suspension arm;
21-a first articulated seat; 22-a second articulated seat; 23-a first shaft; 24-a second shaft; 25-a third rotating shaft;
31-a rope; 32-a counterweight; 33-a fixed pulley;
41-a first guide rail; 42-a second guide rail; 43-a boom.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply 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 limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 3, the present embodiment provides a zero-gravity deployment device, which includes a bearing mechanism 1, an angle adjusting mechanism 2, a gravity unloading mechanism 3, and a position adjusting mechanism 4. The bearing mechanism 1 is used for bearing test products, and the test products can be various spacecraft deployable mechanisms such as satellite antennas. The angle adjusting mechanism 2 is used for driving the bearing mechanism 1 to rotate along a first axis, a second axis and a third axis respectively so as to adjust the angle of the test product, and the first axis, the second axis and the third axis are mutually perpendicular in pairs. The gravity unloading mechanism 3 is used for balancing the gravity of the angle adjusting mechanism 2 and the test product, the position adjusting mechanism 4 is used for driving the angle adjusting mechanism 2 and the gravity unloading mechanism 3 to move along a first direction, a second direction and a third direction so as to adjust the position of the test product, and the first direction, the second direction and the third direction are mutually vertical in pairs.
When the unfolding test of a test product is carried out, the test product is carried by the carrying mechanism 1, the gravity of the angle adjusting mechanism 2 and the test product is balanced by the gravity unloading mechanism 3, the angle adjusting mechanism 2 and the gravity unloading mechanism 3 are driven by the position adjusting mechanism 4 to move along the first direction, the second direction and the third direction so as to adjust the position of the test product, the carrying mechanism 1 is driven by the angle adjusting mechanism 2 to rotate along the first axis, the second axis and the third axis respectively so as to adjust the angle of the test product, the pose adjustment of six degrees of freedom of the test product is realized, the pose adjustment device has the capability of flexibly unloading the gravity during the ground unfolding test, the carrying gravity can be fully unloaded, the operation is convenient, the implementation is easy, the cost is controllable, the unfolding form of the three-dimensional direction and the curved motion trail can be adapted, and the limitation that the existing conventional hanging type antenna unfolding device can only move in the two-dimensional direction is broken, the problems of inconvenience in inflation, difficulty in control, dust pollution on the surface of the balloon and the like of a balloon hanging and unloading mode are solved, and the ground zero-gravity unfolding test requirements of various spacecraft unfolding mechanisms are met.
Optionally, the bearing mechanism 1 includes a connecting seat 11 and a suspension arm 12, one end of the suspension arm 12 is disposed on the connecting seat 11, and the other end of the suspension arm 12 is used for bearing the test product. In this embodiment, the connecting seat 11 and the suspension arm 12 are integrally formed, and the connecting strength is high. In other embodiments, the suspension arms 12 are detachably connected to the connecting socket 11, so that the corresponding suspension arms 12 can be replaced according to different test products.
In the present embodiment, two suspension arms 12 are provided, and the two suspension arms 12 are spaced apart from each other on the connecting base 11. The suspension arm 12 is bent to avoid interference with the test product. In other embodiments, the suspension arms 12 may be provided in three or more numbers according to the requirements of the test product, and are not limited herein.
Optionally, the angle adjusting mechanism 2 includes a first hinged seat 21 and a second hinged seat 22, the bearing mechanism 1 is rotatably disposed on the first hinged seat 21 along a first axis, the first hinged seat 21 is rotatably disposed on the second hinged seat 22 along a second axis, and the second hinged seat 22 is rotatably disposed on the gravity unloading mechanism 3 along a third axis. The rotation angle of the test product along the first axis is adjusted through the rotation of the bearing mechanism 1 relative to the first hinging seat 21, the rotation angle of the test product along the second axis is adjusted through the rotation of the first hinging seat 21 relative to the second hinging seat 22, the rotation angle of the test product along the third axis is adjusted through the rotation of the second hinging seat 22 relative to the gravity unloading mechanism 3, and the pose adjustment of three rotational degrees of freedom of the test product is realized. The first and second axes may be in a horizontal plane and the third axis may be in a vertical direction.
In this embodiment, the angle adjusting mechanism 2 further includes a first rotating shaft 23, a second rotating shaft 24 and a third rotating shaft 25, the bearing mechanism 1 is rotatably connected to the first hinge base 21 through the first rotating shaft 23, the first hinge base 21 is rotatably connected to the second hinge base 22 through the second rotating shaft 24, and the second hinge base 22 is rotatably connected to the gravity unloading mechanism 3 through the third rotating shaft 25. The first rotating shaft 23 may be a pin shaft, and the pin shaft penetrates through the connecting seat 11 and the first hinge seat 21 at the same time, so that the relative rotation between the connecting seat 11 and the first hinge seat 21 is realized. The second rotating shaft 24 can be two pins, the two pins are respectively located at two sides of the second hinge seat 22, penetrate through the first hinge seat 21 and are connected with the second hinge seat 22, and relative rotation of the first hinge seat 21 and the second hinge seat 22 is realized.
Alternatively, the gravity unloading mechanism 3 includes a rope 31, a weight 32, and a fixed pulley 33, the fixed pulley 33 is rotatably disposed on the position adjusting mechanism 4, the rope 31 is suspended on the fixed pulley 33, one end of the rope 31 is connected to the angle adjusting mechanism 2, and the other end of the rope 31 is connected to the weight 32. When the gravity at the two ends of the rope 31 is balanced, the height of the angle adjusting mechanism 2 can be adjusted by rotating the fixed pulley 33, so that the height of a test product is adjusted, and the device is convenient to operate and easy to implement.
Alternatively, the position adjusting mechanism 4 includes a first rail 41, a second rail 42, and a boom 43, both ends of the second rail 42 are slidably disposed on the first rail 41 along a first direction, respectively, one end of the boom 43 is slidably disposed on the second rail 42 along a second direction, and the other end of the boom 43 is connected to the gravity unloading mechanism 3. The first guide rail 41 may be two longitudinal rods arranged in parallel, and the second guide rail 42 may be a transverse rod, both ends of which are slidably connected to one longitudinal rod respectively.
Optionally, the boom 43 comprises a first bar and a second bar, the first bar being adjustably positioned on the second bar along a third direction. The height of the test product is adjusted by adjusting the position of the first bar on the second bar. Optionally, the second rod is sleeved on the first rod, the first rod is provided with a positioning hole, the second rod is provided with a strip-shaped hole, and the fastener penetrates through the strip-shaped hole and is connected with the positioning hole. The fastener is the bolt, and the locating hole adopts the screw hole, conveniently connects.
The zero-gravity unfolding device provided by the embodiment realizes the pose adjustment of six degrees of freedom of a test product, has the capability of flexibly unloading the gravity when the test product is unfolded on the ground, can fully unload the gravity, is convenient to operate, easy to implement and controllable in cost, can adapt to the unfolding form of three-dimensional directions and curved motion tracks, breaks the limitation that the conventional hanging type antenna unfolding device can only move in two-dimensional directions, avoids the problems of inconvenient inflation, difficult control, dust pollution on the surfaces of balloons and the like of a balloon hanging unloading mode, and meets the ground zero-gravity unfolding test requirements of various spacecraft unfolding mechanisms.
The embodiment further provides a zero-gravity unfolding method applied to the zero-gravity unfolding device, and the method comprises the following steps:
the bearing mechanism 1 bears a test product;
the gravity unloading mechanism 3 balances the gravity of the angle adjusting mechanism 2 and the test product;
the position adjusting mechanism 4 drives the angle adjusting mechanism 2 and the gravity unloading mechanism 3 to move along a first direction, a second direction and a third direction so as to adjust the position of the test product;
the angle adjusting mechanism 2 drives the bearing mechanism 1 to rotate along the first axis, the second axis and the third axis respectively so as to adjust the angle of the test product.
The zero-gravity unfolding method provided by the embodiment realizes the pose adjustment of a test product with six degrees of freedom, so that the test product has the capability of flexibly unloading gravity during a ground unfolding test, can fully unload the gravity, is convenient to operate, easy to implement and controllable in cost, can adapt to the unfolding form of a three-dimensional direction and a curved motion track, breaks through the limitation that the conventional hanging type antenna unfolding device can only move in a two-dimensional direction, avoids the problems of inconvenient inflation, difficult control, dust pollution on the surface of a balloon and the like of a balloon hanging unloading mode, and meets the ground zero-gravity unfolding test requirements of various spacecraft unfolding mechanisms.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious modifications, rearrangements and substitutions without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (9)
1. A zero-gravity deployment device, comprising:
the bearing mechanism (1) is used for bearing a test product;
the angle adjusting mechanism (2) is used for driving the bearing mechanism (1) to rotate along a first axis, a second axis and a third axis respectively so as to adjust the angle of the test product, and the first axis, the second axis and the third axis are mutually perpendicular in pairs;
the gravity unloading mechanism (3) is used for balancing the gravity of the angle adjusting mechanism (2) and the test product;
and the position adjusting mechanism (4) is used for driving the angle adjusting mechanism (2) and the gravity unloading mechanism (3) to move along a first direction, a second direction and a third direction so as to adjust the position of the test product, wherein the first direction, the second direction and the third direction are mutually vertical in pairs.
2. The zero-gravity deployment device according to claim 1, wherein the carrying mechanism (1) comprises a connecting seat (11) and a suspension arm (12), one end of the suspension arm (12) is arranged on the connecting seat (11), and the other end of the suspension arm (12) is used for carrying the test product.
3. Zero-gravity deployment device according to claim 2, wherein there are two suspension arms (12), two suspension arms (12) being arranged spaced apart on the attachment seat (11).
4. The zero-gravity deployment device according to claim 1, wherein the angular adjustment mechanism (2) comprises a first articulated seat (21) and a second articulated seat (22), the carrying mechanism (1) being rotatably arranged on the first articulated seat (21) along the first axis, the first articulated seat (21) being rotatably arranged on the second articulated seat (22) along the second axis, the second articulated seat (22) being rotatably arranged on the gravity unloading mechanism (3) along the third axis.
5. The zero-gravity unfolding apparatus according to claim 4, wherein the angle adjusting mechanism (2) further comprises a first rotating shaft (23), a second rotating shaft (24) and a third rotating shaft (25), the bearing mechanism (1) is rotatably connected with the first hinged seat (21) through the first rotating shaft (23), the first hinged seat (21) is rotatably connected with the second hinged seat (22) through the second rotating shaft (24), and the second hinged seat (22) is rotatably connected with the gravity unloading mechanism (3) through the third rotating shaft (25).
6. Zero-gravity deployment device according to claim 1, wherein the gravity unloading mechanism (3) comprises a rope (31), a weight (32) and a fixed pulley (33), the fixed pulley (33) is rotatably arranged on the position adjusting mechanism (4), the rope (31) is suspended on the fixed pulley (33), one end of the rope (31) is connected with the angle adjusting mechanism (2), and the other end of the rope (31) is connected with the weight (32).
7. The zero-gravity deployment device according to claim 1, wherein the position adjustment mechanism (4) comprises a first rail (41), a second rail (42) and a boom (43), wherein two ends of the second rail (42) are respectively slidably disposed on the first rail (41) along the first direction, one end of the boom (43) is slidably disposed on the second rail (42) along the second direction, and the other end of the boom (43) is connected with the gravity unloading mechanism (3).
8. The zero-gravity deployment device according to claim 7, wherein the boom (43) comprises a first bar and a second bar, the first bar being positionally adjustable on the second bar in the third direction.
9. The zero-gravity unfolding apparatus according to claim 8, wherein the second rod is sleeved on the first rod, the first rod is provided with a positioning hole, the second rod is provided with a strip-shaped hole, and a fastening member penetrates through the strip-shaped hole and is connected with the positioning hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120380731.9U CN214776673U (en) | 2021-02-19 | 2021-02-19 | Zero-gravity unfolding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120380731.9U CN214776673U (en) | 2021-02-19 | 2021-02-19 | Zero-gravity unfolding device |
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| CN214776673U true CN214776673U (en) | 2021-11-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114261544A (en) * | 2021-12-30 | 2022-04-01 | 哈尔滨工业大学 | Five-degree-of-freedom zero-gravity test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114261544A (en) * | 2021-12-30 | 2022-04-01 | 哈尔滨工业大学 | Five-degree-of-freedom zero-gravity test device |
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