CN116788525A - Flexible compression release device and use method - Google Patents
Flexible compression release device and use method Download PDFInfo
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- CN116788525A CN116788525A CN202211474501.4A CN202211474501A CN116788525A CN 116788525 A CN116788525 A CN 116788525A CN 202211474501 A CN202211474501 A CN 202211474501A CN 116788525 A CN116788525 A CN 116788525A
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- 230000006835 compression Effects 0.000 title claims abstract description 50
- 238000007906 compression Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000000149 penetrating effect Effects 0.000 claims description 27
- 238000004804 winding Methods 0.000 claims description 23
- 230000000903 blocking effect Effects 0.000 claims description 13
- 238000005485 electric heating Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000002360 explosive Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The invention relates to the technical field of aerospace, in particular to a flexible compression release device and a use method thereof, wherein the flexible compression release device comprises a support, a pin shaft hole is formed in the middle of the support, and a pin shaft is rotatably connected inside the pin shaft hole; an external thread is arranged at the periphery of the left end of the pin shaft; the locking mode of the invention is more reliable, and the pin shaft can be matched with the support and the locking rope so as to realize stable and reliable locking of the pin shaft; according to the invention, the external threads arranged on the shaft pin are matched with the internal threads on the support when in compression fixation; on one hand, the looseness of the shaft pin is prevented when the shaft pin is locked; on the other hand, the thread locking is matched with the spring and the elastic belt, so that the locking rope only needs to overcome the reaction force of the thread; thus, the locking rope is stressed less, and therefore, the power (external force) for fusing (cutting) is smaller than that in the prior art.
Description
Technical Field
The invention relates to the technical field of aerospace, in particular to a flexible compression release device and a use method thereof.
Background
In the aerospace technical field, spacecraft compression release devices are widely used. The compression release device is a mechanical device for realizing firm connection between the body and the accessory or between the parts when the spacecraft is launched, and contacting and restraining the spacecraft according to the specified requirement after the spacecraft is put into orbit.
The traditional compression release device mostly adopts explosive bolts and the like to take initiating explosive devices as cutting power, has the characteristics of large bearing capacity, reliable separation and the like, and has the defects of larger impact load, obvious potential safety hazard, disposable use and the like when in explosion.
The prior patent CN109515751B 'a compression release mechanism based on a hot knife' solves the technical problems that a compression release device based on a firer device can generate larger impact load during working, has obvious potential safety hazard and can only be used once, and has the advantages of simple structure, safety, reliability, low impact, no pollution and reusability.
While this "a thermal knife based compression release mechanism" suffers from the following problems and disadvantages:
1. the locking rope has elasticity to cause the locking rope to be unable to fix components such as the pin shaft, etc.;
2. the locking rope cannot be well attached to other components, so that the locking rope cannot be well fixed to the pin shaft and other components;
3. the locking cord needs to overcome the pressure of the spring and thus requires a high power breaker to break when released.
Disclosure of Invention
Therefore, the locking assembly is provided with the internal thread, the external thread, the locking rope and the elastic belt which are matched with each other to replace the locking mode of locking the electric heating element by the locking rope in the prior art, so that the locking mode of locking the pin shaft is more stable and reliable than the locking mode in the prior art; the invention realizes the aim through the following technical scheme:
the flexible compression release device comprises a support, wherein a pin shaft hole is formed in the middle of the support, and a pin shaft is rotatably connected inside the pin shaft hole; an external thread is arranged at the periphery of the left end of the pin shaft; the left end of the pin shaft is provided with a winding rod; a matching hole is formed in the winding rod; the left end of the winding rod is provided with a bearing rod; the outer side of the bearing rod is provided with a second rope threading hole through a bearing; the front side and the rear side of the left end face of the support are provided with brackets; the second rope threading hole is fixedly connected with the bracket through a spring; an elastic belt is arranged in the matching hole; the front end and the rear end of the elastic belt are fixedly connected with the bracket; an electric heating element is arranged above the left end of the support; a rope threading hole I is formed above the winding rod; the electric heating element is provided with a hot knife rope penetrating hole, and the hot knife rope penetrating hole is fixedly connected with the rope penetrating hole I through a locking rope.
Preferably, an internal thread is arranged in the pin shaft hole; the internal thread is matched with the external thread.
Preferably, a top seat is arranged at the periphery of the left end of the winding rod.
Preferably, support mounting holes are formed in the periphery of the support; the support mounting holes are connected with the external frame through screws.
Preferably, the bracket has a blocking piece.
Preferably, the left end of the bracket is provided with a rope penetrating hole III; and the rope threading hole III is fixedly connected with the outer end of the spring.
Preferably, the application method of the flexible compression release device comprises the following steps:
s1: the right end of the pin shaft and the bottom surface of the support are positioned on the same plane, the left end of the pin shaft and the left end of the support are positioned on the same plane, the first rope penetrating hole faces the rope penetrating hole of the hot knife, the spring is movably connected with the support and the bearing respectively through the second rope penetrating hole and the third rope penetrating hole, the spring at the moment has a certain tensile force, the elastic belt is sleeved on the two supports and penetrates through the matching holes at the same time, and the elastic belt only has weak tensile force to enable the elastic belt to be in contact with the support and parallel to the support, and the compression release device is fixedly connected with an external part through a screw rod and other connecting modes;
s2: when the external part is required to be compressed, the pin shaft is rotated firstly to enable the original force generated by the elastic belt to be larger than the tensile force generated when the spring is in a compression state of the compression release device, then the pin shaft is pushed to pass through the pin shaft hole, the pin shaft is rotated to enable the internal thread to be matched with the external thread, then the internal thread is blocked by the broken end of the external thread to enable the pin shaft to be unable to continue rotating, at the moment, the elastic belt continuously descends along the support along with the winding descending of the pin shaft under the action of the tensile force of the elastic belt and the tensile force of the matching hole, then the elastic belt contacts with the blocking block, if the elastic belt does not contact with the blocking block at the moment, the elastic belt can be manually assisted to continuously descend to contact with the blocking block, at the moment, the elastic belt is parallel to the support again, and at the moment, the pin shaft achieves complete compression of the external part;
s3: the other end of the locking rope is fixedly connected with the first rope threading hole, the locking rope limits the pin shaft to be rotated, which is influenced by the original force to be returned by the elastic belt, from being unable to rotate, so that the pin shaft is limited at the position where the outer part is completely compressed, and the stable and reliable compression of the outer part is realized;
s4: when the external part needs to be released, the electric heating element is electrified to enable the hot knife rope penetrating hole to heat and fuse the locking rope, and the locking rope is in a tight state and is in close contact with the hot knife rope penetrating hole at the moment, so that the locking rope can be fused accurately only by heating the hot knife rope penetrating hole to a certain temperature, then the elastic belt is not limited, the elastic belt releases the original force to drive the pin shaft to rotate, the pin shaft moves towards the top end of the support under the cooperation of the external thread and the internal thread and the tensile force of the spring, then the elastic belt completely releases the original force to return, the pin shaft stops rotating, and the pin shaft at the moment completely pulls out the external part under the tensile force of the spring, so that the release of the external part is realized.
The invention has the beneficial effects that:
1. the locking mode of the invention is more reliable, and the pin shaft can be matched with the support and the locking rope so as to realize stable and reliable locking of the pin shaft;
2. according to the invention, the external threads arranged on the shaft pin are matched with the internal threads on the support when in compression fixation; on one hand, the looseness of the shaft pin is prevented when the shaft pin is locked; on the other hand, the thread locking is matched with the spring and the elastic belt, so that the locking rope only needs to overcome the reaction force of the thread; thus, the locking rope is stressed less, and therefore, the power (external force) for fusing (cutting) is smaller than that in the prior art.
Drawings
FIG. 1 is a schematic view of the release state of the present invention.
Fig. 2 is a top view of the present invention in a compressed state.
Fig. 3 is a cross-sectional view of a support in accordance with the present invention.
Fig. 4 is a schematic view of a pin in the present invention.
Description of the drawings: 1. a support; 11. a support mounting hole; 12. a pin shaft hole; 13. an internal thread; 2. a pin shaft; 21. an external thread; 22. winding a rod; 221. a mating hole; 222. a top base; 223. a bearing rod; 224. threading a first rope hole; 23. a bearing; 231. threading a second rope hole; 3. a spring; 4. an elastic belt; 5. an electric heating element; 51. a hot knife rope penetrating hole; 52. a locking rope; 6. a bracket; 61. a blocking piece; 62. and a rope penetrating hole III.
Detailed Description
Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those having ordinary skill in the art to which the invention pertains will readily implement the embodiments, however, the present invention may be implemented in various different forms, and thus the present invention is not limited to the embodiments described hereinafter.
As shown in fig. 1, a flexible compression release device comprising: the electric heating device comprises a support 1, a pin shaft 2, a spring 3, an elastic belt 4, an electric heating element 5 and a bracket 6;
the support 1 is fixedly connected with an external part, the pin shaft 2 passes through the support 1 to be inserted into the external part when in a compression state, the pin shaft 2 is mutually connected with the support 1 through the mutual matching of two threads, the two springs 3 are respectively connected with the pin shaft 2 and the support 6 through corresponding rope threading holes, the elastic belt 4 is sleeved on the two supports 6 and passes through the matching holes 221 on the pin shaft 2, the electric heating element 5 is arranged on the support 1, the hot knife rope threading holes 51 and the rope threading holes 224 are in the same line, the two supports 6 are symmetrically arranged at two ends of the support 1 and are fixedly connected with the support 1, when the compression release device is in a release state, the left end of the pin shaft 2 and the left end of the support 6 are positioned on the same plane, at the moment, the springs 3 are parallel to the support 1 and the springs 3 have a certain tensile force, the elastic belt 4 is sleeved on the two supports 6 and passes through the matching holes 221 on the pin shaft 2, at this time, the elastic belt 4 is almost in an unstretched original state, only weak tension makes the elastic belt 4 contact with the support 1, the locking rope 52 is only connected with the hot knife threading hole 51, when the compression release device is in a compressed state, during the compression of the pin shaft 2 to the external part, the pin shaft 2 is rotated to enable the internal thread 13 on the pin shaft 2 to be matched with the external thread 21 on the support 1, the pin shaft 2 is connected with the support 1, the spring 3 is stretched and forms a certain angle with the support 1, the elastic belt 4 is stretched due to the rotation of the pin shaft 2 and a part of the elastic belt 4 is wound on the winding rod 22 on the pin shaft 2, at this time, the pin shaft 2 is completely compressed to the external part, then the locking rope 52 is connected with the threading hole one 224, and the release of the original force to be returned by the elastic belt 4 is limited, so that the pin shaft 2 is kept at a position when the external part is completely compressed;
as shown in fig. 2 and 3, the support 1 is provided with a support mounting hole 11, a pin hole 12 and an internal thread 13;
the four bearing mounting holes 11 are uniformly formed in four corners of the bearing 1 and fixedly connected with an external part through connecting pieces such as screws, the pin shaft hole 12 is formed in the center of the bearing 1 and is used for allowing the pin shaft 2 to pass through, and the internal threads 13 are concavely formed in the periphery of the pin shaft hole 12 and are used for being matched with the external threads 21;
as shown in fig. 2 and 4, the pin shaft 2 has an external thread 21, a winding rod 22, a mating hole 221, a top seat 222, a bearing rod 223, a first rope penetrating hole 224, a bearing 23, and a second rope penetrating hole 231;
the pin shaft 2 plays a role of pressing an outer part when the pressing and releasing device is in a pressing state, the outer thread 21 is arranged on the periphery of the left end of the pin shaft 2 in a protruding mode, when the pressing and releasing device is in a pressing state, the mutual matching of the outer thread 21 and the inner thread 13 plays a role of limiting the winding range of the spring 3, the pin shaft 2 is limited to pull out the pin shaft hole 12 under the tensile force of the spring 3, the outer part is released, the winding rod 22 plays a role of winding the elastic belt 4 in the rotating process of the pin shaft 2, the diameter of the winding rod 22 is smaller than that of the pin shaft 2, the requirement on the stretching length of the elastic belt 4 can be relaxed, the matching hole 221 plays a role of allowing the elastic belt 4 to pass through the pin shaft 2, the matching hole 221 can enable the elastic belt 4 to be wound on the winding rod 22 in the rotating process of the pin shaft 2, the top seat 222 plays a role of limiting the winding range of the elastic belt 4, meanwhile, the periphery of the top seat 222 is arc-shaped and can prevent the elastic belt 4 from being damaged by a shell or a shell when the tensile force is released, the bearing rod 223 plays a role of fixing the bearing 23, the role of connecting the rope hole 224 to the rope 52, and the rope 3 is symmetrically connected with the bearing 23 when the two bearings 23 are symmetrically arranged on the pin shaft 2, and the bearing 2 is prevented from being symmetrically connected with the bearing 3, and the bearing 23, and the bearing 2 is prevented from being symmetrically arranged by the bearing 3;
the two ends of the spring 3 are respectively and movably connected with the pin shaft 2 and the bracket 6 through the corresponding rope threading hole II 231 and the rope threading hole III 62, the two ends of the spring 3 are respectively provided with a circular connecting hole, so that the angle of the spring 3 relative to the bracket 6 can be changed, when the compression release device is in a release state, the spring 3 is perpendicular to the bracket 6, and when the compression release device is in a compression state, the spring 3 is stretched and forms a certain angle with the bracket 6;
the elastic belt 4 is sleeved on the support 6, when the compression release device is in a release state, the elastic belt 4 only has weak tension to enable the elastic belt 4 to be in contact with the support 6, and the elastic belt 4 is parallel to the support 1 at the moment, when the compression release device is in a compression state, the elastic belt 4 descends along with the descending of the pin shaft 2, and then winds on the winding rod 22 along with the rotation of the pin shaft 2;
the electric heating element 5 is arranged on the support 1, the hot knife threading hole 51 and the threading hole 224 are positioned on the same plane and on the same straight line, when the compression release device is in a compression state, two ends of the locking rope 52 are respectively connected with the hot knife threading hole 51 and the threading hole 224, and the elastic belt 4 is provided with a force to return to the original state so that the pin shaft 2 drives the threading hole 224 to generate a force to rotate, therefore, the locking rope 52 is in a tight state so that the hot knife threading hole 51 is tightly contacted with one end of the locking rope 52, and the distance between the hot knife threading hole 51 and the threading hole 224 is relatively short, and the elasticity of the locking rope 52 can be almost ignored;
the two brackets 6 are symmetrically arranged at the two ends of the support 1 to play a role of fixing the spring 3 and the elastic belt 4, the blocking block 61 is arranged at the bottom of the bracket 6 to play a role of limiting the position of the elastic belt 4 on the bracket 6, and the three rope penetrating holes 62 are arranged at the upper end of the bracket 6 to play a role of connecting the spring 3.
The application method of the invention comprises the following steps:
as shown in fig. 1, the pressing and fixing are prepared;
s1: the right end of the pin shaft 2 and the bottom surface of the support 1 are positioned on the same plane, the left end of the pin shaft 2 and the left end of the support 6 are positioned on the same plane, the first rope penetrating hole 224 faces to the first rope penetrating hole 51 of the hot knife, the spring 3 is movably connected with the support 6 and the bearing 23 respectively through the second rope penetrating hole 231 and the third rope penetrating hole 62, the spring 3 has certain tensile force at the moment, the elastic belt 4 is sleeved on the two supports 6 and passes through the matching holes 221 at the same time, and the elastic belt 4 only has weak tensile force at the moment so that the elastic belt 4 contacts with the supports 6 and is parallel to the support 1, and the compression release device is fixedly connected with an external part through a screw rod and other connecting modes;
s2: when the external component is required to be compressed, the pin shaft 2 is rotated firstly to enable the original force to be returned generated by the elastic belt 4 to be larger than the tensile force generated when the spring 3 is in a compression release device and is in a compression state, then the pin shaft 2 is pushed to pass through the pin shaft hole 12, then the pin shaft 2 is rotated to enable the internal thread 13 to be matched with the external thread 21, then the internal thread 13 is blocked by the broken end of the external thread 21 to enable the pin shaft 2 to be unable to continue rotating, at the moment, the elastic belt 4 continuously descends along the support 6 along with the winding of the pin shaft 2 under the action of the tensile force of the elastic belt 4 and the tensile force of the matching hole 221, then contacts with the blocking block 61, if the elastic belt 4 does not contact with the blocking block 61 at the moment, the elastic belt 4 can be assisted to continuously descend to contact with the blocking block 61 manually, at the moment, the elastic belt 4 is in a parallel state with the support 1 again, and at the moment, the pin shaft 2 achieves complete compression of the external component;
s3: then the other end of the locking rope 52 is fixedly connected with the first rope threading hole 224, the locking rope 52 limits the pin shaft 2 to be rotated, which is influenced by the original force to be returned by the elastic belt 4, not to rotate, so that the pin shaft 2 is limited at the position where the external part is completely compressed, and the stable and reliable compression of the external part is realized;
s4: when the external part needs to be released, the electric heating element 5 is electrified to enable the hot knife threading hole 51 to heat and fuse the locking rope 52, and the locking rope 52 is in a tight state and is in close contact with the hot knife threading hole 51 at the moment, so that the locking rope 52 can be fused accurately only by heating the hot knife threading hole 51 to a certain temperature, then the elastic belt 4 is not limited, the elastic belt 4 releases the original force to return to drive the pin shaft 2 to rotate, the pin shaft 2 moves towards the top end of the bracket 6 under the cooperation of the external thread 21 and the internal thread 13 and the tension of the spring 3, then the elastic belt 4 completely releases the original force to return, the pin shaft 2 stops rotating, and the pin shaft 2 at the moment completely pulls out the external part under the tension of the spring 3, so that the release of the external part is realized.
Claims (7)
1. A flexible compression release device comprising a support (1), characterized in that: a pin shaft hole (12) is formed in the middle of the support (1), and a pin shaft (2) is rotatably connected inside the pin shaft hole (12); an external thread (21) is arranged on the periphery of the left end of the pin shaft (2); the left end of the pin shaft (2) is provided with a winding rod (22); a matching hole (221) is formed in the winding rod (22); the left end of the winding rod (22) is provided with a bearing rod (223); the outer side of the bearing rod (223) is provided with a rope threading hole II (231) through a bearing (23); the front side and the rear side of the left end face of the support (1) are provided with brackets (6); the second rope threading hole (231) is fixedly connected with the bracket (6) through the spring (3); an elastic belt (4) is arranged in the matching hole (221); the front end and the rear end of the elastic belt (4) are fixedly connected with the bracket (6); an electric heating element (5) is arranged above the left end of the support (1); a first rope threading hole (224) is formed above the winding rod (22); the electric heating element (5) is provided with a hot knife rope penetrating hole (51), and the hot knife rope penetrating hole (51) is fixedly connected with the rope penetrating hole I (224) through a locking rope (52).
2. A flexible compression release device as claimed in claim 1 wherein: an internal thread (13) is formed in the pin shaft hole (12); the internal thread (13) is matched with the external thread (21).
3. A flexible compression release device as claimed in claim 1 wherein: the periphery of the left end of the winding rod (22) is provided with a top seat (222).
4. A flexible compression release device as claimed in claim 1 wherein: support mounting holes (11) are formed in the periphery of the support (1); the support mounting holes (11) are connected with the external frame through screws.
5. A flexible compression release device as claimed in claim 1 wherein: the holder (6) has a blocking piece (61).
6. A flexible compression release device as claimed in claim 1 wherein: the left end of the bracket (6) is provided with a rope threading hole III (62); and the rope threading hole III (62) is fixedly connected with the outer end of the spring (3).
7. A method of using a flexible compression release device according to any one of claims 1 to 6, comprising the steps of:
s1: the right end of the pin shaft (2) is positioned on the same plane with the bottom surface of the support (1), the left end of the pin shaft (2) is positioned on the same plane with the left end of the support (6), the first rope penetrating hole (224) faces to the hot knife rope penetrating hole (51), the spring (3) is movably connected with the support (6) and the bearing (23) respectively through the second rope penetrating hole (231) and the third rope penetrating hole (62), the spring (3) has certain pulling force at the moment, the elastic belt (4) is sleeved on the two supports (6) and penetrates through the matching holes (221), and the elastic belt (4) only has weak pulling force at the moment so that the elastic belt (4) contacts with the support (6) and is parallel to the support (1), and the compression release device is fixedly connected with an external part through a screw rod and other connecting modes;
s2: when the external part is required to be compressed, the pin shaft (2) is rotated firstly to enable the original force generated by the elastic belt (4) to be larger than the pulling force generated when the spring (3) is in a compression state when the compression release device is in compression, then the pin shaft (2) is pushed to pass through the pin shaft hole (12), then the pin shaft (2) is rotated to enable the internal thread (13) to be matched with the external thread (21), then the internal thread (13) is blocked by the broken end of the external thread (21) to enable the pin shaft (2) to be unable to rotate continuously, at the moment, the elastic belt (4) continuously descends along the support (6) along with the winding of the pin shaft (2) under the action of the pulling force of the elastic belt and the pulling force of the matching hole (221), then the elastic belt (4) is contacted with the blocking block (61), if the elastic belt (4) is not contacted with the blocking block (61) at the moment, the elastic belt (4) can be manually assisted to continuously descend to be contacted with the blocking block (61), at the moment, the elastic belt (4) is again in a parallel state with the support (1) at the moment, and the pin shaft (2) can realize complete compression of the external part;
s3: then the other end of the locking rope (52) is fixedly connected with the first rope threading hole (224), the locking rope (52) limits the pin shaft (2) to be rotated, which is influenced by the original force to be returned by the elastic belt (4), not to rotate, so that the pin shaft (2) is limited at the position of completely compacting the outer part, and stable and reliable compacting of the outer part is realized;
s4: when the external part is required to be released, the electric heating element (5) is electrified to enable the hot knife rope threading hole (51) to heat and fuse the locking rope (52), because the locking rope (52) is in a tight state and is in close contact with the hot knife rope threading hole (51), the locking rope (52) can be fused accurately only by heating the hot knife rope threading hole (51) to a certain temperature, then the elastic belt (4) is not limited, the elastic belt (4) releases the original force to drive the pin shaft (2) to rotate, the pin shaft (2) moves towards the top end of the bracket (6) under the cooperation of the external thread (21) and the internal thread (13) and the tensile force of the spring (3), then the elastic belt (4) completely releases the original force to be returned, the pin shaft (2) stops rotating, and the pin shaft (2) completely pulls out the external part under the tensile force of the spring (3) at the moment, so that the release of the external part is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211474501.4A CN116788525B (en) | 2022-11-23 | 2022-11-23 | Flexible compression release device and use method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211474501.4A CN116788525B (en) | 2022-11-23 | 2022-11-23 | Flexible compression release device and use method |
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| CN116788525A true CN116788525A (en) | 2023-09-22 |
| CN116788525B CN116788525B (en) | 2024-05-14 |
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| CN113071719A (en) * | 2021-04-30 | 2021-07-06 | 北京吾天科技有限公司 | Double-hot-cutter type compression and release mechanism |
| CN113415446A (en) * | 2021-07-29 | 2021-09-21 | 深圳市魔方卫星科技有限公司 | Electromagnetic-triggered pressing and releasing device and using method |
| CN216943601U (en) * | 2022-03-22 | 2022-07-12 | 北京国电高科科技有限公司 | Memory alloy spring pressing and releasing device |
| CN115230998A (en) * | 2022-07-28 | 2022-10-25 | 北京吾天科技有限公司 | Compressing and releasing device |
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