CN111232255A - Follow-up gravity balancing device - Google Patents
Follow-up gravity balancing device Download PDFInfo
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- CN111232255A CN111232255A CN202010070616.1A CN202010070616A CN111232255A CN 111232255 A CN111232255 A CN 111232255A CN 202010070616 A CN202010070616 A CN 202010070616A CN 111232255 A CN111232255 A CN 111232255A
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- winding
- chain
- chain wheel
- reel
- take
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G7/00—Simulating cosmonautic conditions, e.g. for conditioning crews
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- Aviation & Aerospace Engineering (AREA)
- Testing Of Balance (AREA)
Abstract
A follow-up gravity balance device comprises a plate-type support frame and the like. The supporting legs are arranged on two sides of the plate type supporting frame and are used as an installation foundation for winding the chain wheel and the take-up reel together. The winding chain wheel is arranged along the self axial direction and is respectively connected with the two supporting legs. The chain-matching chain is wound along the spiral direction of the spiral groove on the surface of the winding chain wheel, one end of the chain-matching chain is fixedly connected with the edge of the winding chain wheel, and the other end of the chain-matching chain is freely suspended outside the spiral groove of the winding chain wheel. The take-up reel is arranged between the two winding chain wheels and is connected in series through a connecting joint. The traction rope is wound on the take-up reel, and the free suspension end is connected with the equipment for balancing gravity. The invention can be used for the follow-up gravity balance function of the one-dimensional extension mechanism which can be unfolded or folded without gravity in the vertical direction of the ground, and improves the reliability of the ground extension and retraction function verification of the extension mechanism.
Description
Technical Field
The invention relates to the technical field of unfolding and folding mechanisms of aerospace crafts, in particular to a follow-up gravity balancing device.
Background
The trend of the large-scale spacecraft is more and more obvious, the size of a unfolding mechanism for unfolding a solar cell array or an antenna on the spacecraft is larger and larger, and in order to improve the reliability of on-orbit unfolding and folding, the spacecraft needs to be unfolded on the ground in a gravity-free simulation mode. The extension mechanism is used as one of the core components of the large-area solar wing, the extension length is large, the matching of the movable components is precise, and the test of the ground extension and retraction functions requires a weight balancing device which can follow along the extension and retraction direction and precisely balance the weight.
The existing gravity balance device mainly carries out the gravity balance of the extension mechanism through a hanging or supporting system in the horizontal direction, the mode has large demand on the ground space, and people need to participate in the hanging or supporting operation in the whole process. On one hand, the balance system has a complex structure, large field requirement and high manufacturing cost; on the other hand, it cannot be used in an environment where it is inconvenient for a person to participate, such as a high-temperature and low-temperature test.
Disclosure of Invention
The technical problem solved by the invention is as follows: in order to solve the gravity balance problem of the ground expansion and contraction function test of the one-dimensional expansion mechanism, the invention provides a follow-up gravity balance device which can provide follow-up and accurate gravity balance for the expansion mechanism when the ground is vertically expanded.
The technical scheme adopted by the invention is as follows: a follow-up gravity balance device comprises a plate-type bracket, supporting legs, a winding chain wheel, a heavy chain, a take-up reel, a traction rope and a connecting joint; the supporting legs are fixed on two sides of the lower surface of the plate type supporting frame; the winding chain wheels are symmetrically arranged below the plate type supporting frame and are supported by supporting legs at two sides; the take-up reel is arranged between the winding chain wheels, and two ends of a rotating shaft of the take-up reel are respectively connected with the rotating shaft of the winding chain wheels through connecting joints; the heavy chain is wound along the surface of the winding chain wheel, one end of the heavy chain is fixed with the edge of the winding chain wheel, and the other end of the heavy chain freely hangs; the traction rope is wound on the take-up reel, and the free suspension end is connected with the equipment for balancing gravity.
The plate-type support frame comprises a bottom plate, a reinforcing strip and a lifting lug, the reinforcing strip forms a frame structure, the bottom plate is installed on one side of the frame structure, and the lifting lug is fixed on the reinforcing strip and serves as a hanging and transferring interface when the follow-up gravity balance device works.
The spiral groove is arranged on the surface of the winding chain wheel, and the matching chain is wound along the spiral direction of the spiral groove on the surface of the winding chain wheel.
When the balance weight is unfolded for the stretching mechanism, one section of length used as the initial unfolding balance weight is reserved at the free end of the balance weight chain, the free end moves downwards, the balance weight chain drives the winding chain wheel to rotate, and the winding chain wheel drives the take-up reel to rotate, so that the traction rope is gradually wound on the take-up reel along with the unfolding process.
When the stretching mechanism draws in the balance weight, the traction rope is wound on the take-up reel, the free suspension end of the traction rope drives the take-up reel to rotate, and the take-up reel drives the winding chain wheels on two sides to rotate, so that the balance weight chain is gradually wound on the spiral groove of the winding chain wheel along with the drawing process.
The spiral groove of the first winding chain wheel and the spiral groove of the second winding chain wheel are opposite in spiral direction.
The winding or releasing speed of the counterweight chain can be adjusted along with the change of the expanding and contracting speed of the expanding mechanism.
The outer diameter proportion of the winding chain wheel and the take-up reel is adjusted, and the transmission reduction ratio of the matching chain and the traction rope is adjusted.
Compared with the prior art, the invention has the advantages that:
(1) the invention can perform gravity follow-up balance along with the unfolding and folding actions of the stretching mechanism, adjust the linear density of the counterweight chain or adjust the outer diameter ratio of the winding chain wheel and the take-up reel, realize accurate counterweight of the stretching mechanism in the unfolding and folding processes and improve the ground test reliability of the stretching mechanism.
(2) The invention does not need human participation in the gravity balance working process, and can be carried out in the test environments such as high-low temperature tests, vacuum tests and the like which are inconvenient for human to enter.
(3) The invention has simple structure and high operability, occupies small space and consumes no power compared with the gravity balance methods of air floatation suspension, active load and the like, and can be expanded to the ground test of stretching mechanisms with different specifications and different configurations.
Drawings
FIG. 1 is a schematic structural view of a follower gravity balance device of the present invention;
FIG. 2 is a schematic structural view of the panel bracket of the present invention;
FIG. 3 is a schematic structural view of a heavy chain of the present invention;
fig. 4 is a schematic structural view of the wrap sprocket of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in figures 1-4, the follow-up gravity balance device comprises a plate type support frame 1, support legs 2, a winding chain wheel 3, a counterweight chain 4, a take-up reel 5, a traction rope 6 and a connecting joint 7. The plate type strut 1 is a mounting seat of the gravity balance device, and the supporting legs 2 are fixed on two sides of the lower surface of the plate type strut 1; 2 winding chain wheels 3 are arranged along the self axial direction and are respectively connected with the supporting legs 2 at the two sides; the heavy chain 4 is wound along the spiral direction of the spiral groove on the surface of the winding chain wheel 3, one end of the heavy chain is fixed with the edge of the winding chain wheel 3, and the other end of the heavy chain is freely suspended outside the spiral groove of the winding chain wheel 3; the traction rope 6 is wound on the take-up reel 5, and the free suspension end is connected with equipment for balancing gravity; the take-up reel 5 is arranged between the two winding wheels 3 and connected in series through a connecting joint 7.
The plate-type support frame 1 comprises a bottom plate 1-1, reinforcing strips 1-2 and lifting lugs 1-3, the reinforcing strips 1-2 form a frame structure, the bottom plate 1-1 is installed on one side of the frame structure, the reinforcing strips 1-2 improve the shape stability of the bottom plate 1-1 and reduce the weight of the plate-type support frame 1, and the lifting lugs 1-3 are fixed on the reinforcing strips 1-2 and serve as hanging and transferring interfaces when the gravity balance device works.
When the balance weight is unfolded for the stretching mechanism, the balance weight chain 4 is wound on the spiral groove of the winding chain wheel 3, a small section of length is reserved at the free end to be used as the length of the initial unfolding balance weight, the free end moves downwards, the matching chain 4 drives the winding chain wheel 3 to rotate, the winding chain wheel 3 drives the take-up reel 5 to rotate, and the traction rope 6 is gradually wound on the take-up reel 5 along with the unfolding process; when the stretching mechanism draws in the balance weight, the traction rope 6 is wound on the take-up reel 5, the free suspension end of the traction rope 6 drives the take-up reel 5 to rotate, and the take-up reel 5 drives the winding chain wheels 3 on two sides to rotate, so that the distribution chain 4 is gradually wound on the spiral groove of the winding chain wheels along with the drawing process.
The winding chain wheel 3 comprises a first winding chain wheel 3-1 and a second winding chain wheel 3-2, and the spiral directions of the spiral grooves of the winding chain wheels 3 on the two sides are opposite, so that the counterweight chains 4 keep opposite movement states when winding or releasing, and the plate-type support frame 1 is ensured to be stressed uniformly and has a stable structure.
The distribution chain 4 is a chain or rope with the same linear density, and the winding or releasing speed can be adjusted along with the change of the expanding and contracting speed of the stretching mechanism.
The outer diameter proportion of the winding chain wheel 3 and the take-up reel 5 is adjusted, the adaptive design of the transmission reduction ratio of the counterweight chain 4 and the traction rope 6 can be realized, and the accurate counterweight of the stretching mechanism in the stretching and retracting process is realized. The connecting joint 7 is a universal transmission component with strong radial, angular and axial deviation adaptability, such as a coupler and a universal joint.
The invention is mainly applied to a one-dimensional extension mechanism, provides a follow-up gravity balance device, provides a zero-gravity simulation guarantee condition for ground extension and retraction test verification of the extension mechanism, and improves the reliability of ground test verification through accurate counterweight and follow-up extension and retraction actions.
It will be understood by those skilled in the art that while the present invention has been described in terms of the preferred embodiment, it is not intended to limit the invention to the form disclosed in the claims. Any variations and modifications, equivalent substitutions and improvements, which may occur to those skilled in the art, without departing from the spirit and scope of the present invention, are intended to be included within the scope of the present invention.
The present invention has not been described in detail, partly as is known to the person skilled in the art.
Claims (8)
1. A follow-up gravity balance device is characterized in that: comprises a plate-type bracket (1), supporting legs (2), a winding chain wheel (3), a heavy distribution chain (4), a take-up reel (5), a traction rope (6) and a connecting joint (7); the supporting legs (2) are fixed on two sides of the lower surface of the plate-type support frame (1); the winding chain wheels (3) are symmetrically arranged below the plate-type support frame (1) and are supported by the support legs (2) on the two sides; the take-up reel (5) is arranged between the winding chain wheels (3), and two ends of a rotating shaft of the take-up reel (5) are respectively connected with the rotating shaft of the winding chain wheels (3) through connecting joints (7); the heavy chain (4) is wound along the surface of the winding chain wheel (3), one end of the heavy chain is fixed with the edge of the winding chain wheel (3), and the other end of the heavy chain freely hangs; the traction rope (6) is wound on the take-up reel (5), and the free suspension end is connected with equipment balanced in gravity.
2. A follow-up gravity balancing device according to claim 1, wherein: the plate-type support frame (1) comprises a bottom plate (1-1), reinforcing strips (1-2) and lifting lugs (1-3), the reinforcing strips (1-2) form a frame structure, the bottom plate (1-1) is installed on one side of the frame structure, and the lifting lugs (1-3) are fixed on the reinforcing strips (1-2) and serve as hanging and transferring interfaces when the follow-up gravity balance device works.
3. A follow-up gravity balancing device according to claim 1 or 2, wherein: the surface of the winding chain wheel (3) is provided with a spiral groove, and the matching chain (4) is wound along the spiral direction of the spiral groove on the surface of the winding chain wheel (3).
4. A follow-up gravity balancing device according to claim 3, wherein: when the balance weight is unfolded for the stretching mechanism, a section of length used as an initial unfolding balance weight is reserved at the free end of the counterweight chain (4), the free end moves downwards, the counterweight chain (4) drives the winding chain wheel (3) to rotate, and the winding chain wheel (3) drives the take-up reel (5) to rotate, so that the traction rope (6) is gradually wound on the take-up reel (5) along with the unfolding process.
5. A follow-up gravity balancing device according to claim 4, wherein: when the balance weight is drawn in by the stretching mechanism, the drawing rope (6) is wound on the take-up reel (5), the free hanging end of the drawing rope (6) drives the take-up reel (5) to rotate, and the take-up reel (5) drives the winding chain wheels (3) on two sides to rotate, so that the balance weight chain (4) is gradually wound on the spiral grooves of the winding chain wheels (3) along with the drawing process.
6. A follow-up gravity balancing device according to claim 5, wherein: the winding chain wheel (3) comprises a first winding chain wheel (3-1) and a second winding chain wheel (3-2), and the spiral directions of the spiral grooves of the first winding chain wheel (3-1) and the second winding chain wheel (3-2) are opposite.
7. A follow-up gravity balancing device according to claim 6, wherein: the winding or releasing speed of the heavy chain (4) can be adjusted along with the change of the unfolding and folding speed of the stretching mechanism.
8. A follow-up gravity balancing device according to claim 7, wherein: the external diameter proportion of the winding chain wheel (3) and the take-up reel (5) is adjusted, and the transmission reduction ratio of the heavy distribution chain (4) and the traction rope (6) is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010070616.1A CN111232255B (en) | 2020-01-21 | 2020-01-21 | Follow-up gravity balancing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010070616.1A CN111232255B (en) | 2020-01-21 | 2020-01-21 | Follow-up gravity balancing device |
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| CN111232255A true CN111232255A (en) | 2020-06-05 |
| CN111232255B CN111232255B (en) | 2020-11-10 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101044085A (en) * | 2004-11-25 | 2007-09-26 | 张涥佶 | Elevator |
| CN201933962U (en) * | 2010-12-31 | 2011-08-17 | 浙江理想门业制造有限公司 | Balancing device for sectional counterweight of industrial door |
| CN202114529U (en) * | 2011-06-01 | 2012-01-18 | 威海华东数控股份有限公司 | Transverse follower type counterweight device |
| CN202966679U (en) * | 2012-10-22 | 2013-06-05 | 浙江工业大学 | One-dimensional active-following weight-reduction and suspension device |
| CN205371809U (en) * | 2016-03-09 | 2016-07-06 | 唐山国丰钢铁有限公司 | Steelmaking argon gas bottom blowing pipe reel automatic control device |
| KR101817143B1 (en) * | 2017-07-13 | 2018-01-10 | 정증자 | Roping device of elevator |
-
2020
- 2020-01-21 CN CN202010070616.1A patent/CN111232255B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101044085A (en) * | 2004-11-25 | 2007-09-26 | 张涥佶 | Elevator |
| CN201933962U (en) * | 2010-12-31 | 2011-08-17 | 浙江理想门业制造有限公司 | Balancing device for sectional counterweight of industrial door |
| CN202114529U (en) * | 2011-06-01 | 2012-01-18 | 威海华东数控股份有限公司 | Transverse follower type counterweight device |
| CN202966679U (en) * | 2012-10-22 | 2013-06-05 | 浙江工业大学 | One-dimensional active-following weight-reduction and suspension device |
| CN205371809U (en) * | 2016-03-09 | 2016-07-06 | 唐山国丰钢铁有限公司 | Steelmaking argon gas bottom blowing pipe reel automatic control device |
| KR101817143B1 (en) * | 2017-07-13 | 2018-01-10 | 정증자 | Roping device of elevator |
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| CN111232255B (en) | 2020-11-10 |
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Inventor after: Luo Haijun Inventor after: Cui Qifeng Inventor after: Peng Zhilong Inventor after: Cui Yuxin Inventor after: Liu Kairong Inventor after: Wang Zhiyi Inventor after: Zhang Lei Inventor before: Luo Haijun Inventor before: Cui Qifeng Inventor before: Peng Zhilong Inventor before: Wang Zhiyi Inventor before: Zhang Lei |