CN117602112A - Wire constraint low-impact fusing type unlocking device - Google Patents
Wire constraint low-impact fusing type unlocking device Download PDFInfo
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- CN117602112A CN117602112A CN202311629990.0A CN202311629990A CN117602112A CN 117602112 A CN117602112 A CN 117602112A CN 202311629990 A CN202311629990 A CN 202311629990A CN 117602112 A CN117602112 A CN 117602112A
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- 230000007246 mechanism Effects 0.000 abstract description 5
- 230000004044 response Effects 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 description 9
- 239000002360 explosive Substances 0.000 description 7
- 230000000977 initiatory effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
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- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 108091092878 Microsatellite Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/64—Systems for coupling or separating cosmonautic vehicles or parts thereof, e.g. docking arrangements
- B64G1/645—Separators
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Abstract
The invention relates to a wire constraint low-impact fusing type unlocking device, which comprises: the device comprises a fastening unit, a split assembly, a fusing assembly, a connecting piece and a shell assembly. The fastening unit, the split assembly, the fusing assembly and the connecting piece are all arranged in the shell assembly; the split assembly is fixedly connected to one of the external compression end and the compressed end; the fastening unit is used for clamping the split assembly circumferentially inwards, so that the split assembly clamps the fixed connecting piece and limits the axial movement of the connecting piece; the fusing component is electrified to release the clamping and fixing of the fastening unit to the split component, so that the connecting piece moves axially under the action of pretightening force or external load, and the external compression end is separated from the compressed end to be unlocked. The technical scheme adopted by the invention has the characteristics of wide temperature application range, high load bearing, low impact release, quick unlocking response, simple mechanism and flattened structure, and can meet the requirements of satellite and arrow or effective load compression release in aerospace application.
Description
Technical Field
The invention relates to the technical field of aerospace connection and separation mechanisms, in particular to an unlocking device for compressing and releasing a satellite and an arrow or a payload.
Background
At present, most satellites and load compression release devices applied in the aerospace field are based on the principle of initiating explosive actions, namely cutting, punching or pushing out connecting pieces through explosion impact force to realize separation. The fire separating device has the advantages of simple structure, strong bearing capacity, rapid separating action and the like, and is a mature single product after a large number of flight test tests. However, such devices also suffer from the insurmountable drawbacks, mainly including high additional weight, strong separation impact, significant additional contamination, non-reusability, etc. With the improvement of the control precision of the on-orbit cluster emission separation of the microsatellite in the future and the wide application of various sensitive equipment (such as an optical camera, a thin film reflector, a flexible antenna and the like) with harsh requirements on impact environment, the limitation of the technology of the existing fire separation device is more obvious.
To cope with the increasing new connection and disconnection demands, non-initiating low-impact connection and disconnection technologies are gradually rising, and new standardized low-impact connection and disconnection devices are started to emerge. According to different driving source forms, there are memory alloy unlocking device, paraffin unlocking device, hot knife unlocking device, etc. The bearing mode and the force reducing mode are different, and the steel ball limiting split nut, the double-swing-arm limiting flywheel nut, the locking hook swing rod and the like are arranged. Although the novel non-initiating explosive device has more types, the novel non-initiating explosive device has certain defects in the aspects of narrow temperature application range, high mechanism complexity, large longitudinal structure size and the like.
Disclosure of Invention
The invention solves the technical problems that: the invention discloses a fusing type unlocking device based on a linear constraint split pressure-bearing reel principle, which aims to solve the problems that the existing unlocking device technology is narrow in temperature application range, difficult to release under the load of a large load and impact, poor in quick response when a non-initiating explosive device is unlocked, high in mechanism complexity, difficult to flatten and the like.
The technical scheme of the invention is as follows:
in a first aspect of the present invention,
a wire-constrained low-impact fused unlocking device, comprising: the device comprises a fastening unit, a split assembly, a fusing assembly, a connecting piece and a shell assembly;
the fastening unit, the split assembly, the fusing assembly and the connecting piece are all arranged in the shell assembly;
the shell component is fixedly connected to one of the external compression end and the compressed end;
the fastening unit is used for clamping the split assembly circumferentially inwards, so that the split assembly clamps the fixed connecting piece and limits the axial movement of the connecting piece;
the fusing component is electrified to release the clamping and fixing of the fastening unit to the split component, so that the connecting piece moves axially under the action of pretightening force or external load, and the external compression end is separated from the compressed end to be unlocked.
Preferably, the method further comprises: a guide structure;
the connecting piece extrudes the split assembly to move along the matching surface on the guide structure under the action of pretightening force or external load.
Preferably, the fastening unit includes: restraining the spring wire;
the split assembly includes: a first pressure spool and a second pressure spool;
the connecting piece includes: connecting a pull rod;
the housing assembly includes: the device comprises a guide rod, a guide rod nut, a shell mounting screw, a mounting base and a mounting shell;
the restraining spring wire is wound on the outer walls of the first pressure-bearing reel and the second pressure-bearing reel, one end of the restraining spring wire is fixedly connected with the first pressure-bearing reel or the second pressure-bearing reel, and the other end of the restraining spring wire is connected with the fusing component; after the fusing component is fused, the restraint spring wire is released to wind and fix the first pressure-bearing reel and the second pressure-bearing reel;
a radial retraction section is arranged in the middle of the connecting pull rod; the first pressure-bearing scroll and the second pressure-bearing scroll encircle the outside of the clamping connecting pull rod, and the middle of the first pressure-bearing scroll and the second pressure-bearing scroll is respectively provided with a matching surface corresponding to the radial retraction section of the connecting pull rod for limiting the axial movement of the connecting pull rod;
the guide rod is matched with the guide rod nut for use, and is used for axially and fixedly connecting the mounting base and the mounting shell;
the mounting base and the circumferential wall surface of the mounting shell are circumferentially fixed through shell mounting screws;
the connecting pull rod is fixedly connected with one of the external compression end or the compressed end and receives axial external force.
Preferably, the fusing assembly includes: the fuse wire, the fuse wire pressing block, the fuse wire mounting seat, the wire welding column, the fuse wire pressing nut and the fusing part mounting screw;
the fuse wire mounting seat is fixedly mounted on the mounting base through a fuse part mounting screw;
one end of the fuse wire is in pressure connection between the wire welding column and the fuse wire mounting seat, and the other end of the fuse wire is in pressure connection between the fuse wire pressing block and the fuse wire mounting seat through the fuse wire compression nut;
the other end of the constraint spring wire passes through the fuse wire and is fixedly connected with the fuse wire; the fuse can be heated and fused in the electrified state, and the fixed connection between the fuse and the constraint spring wire is released.
Preferably, the guide structure comprises: a guide ring;
the guide ring is positioned above the mounting base, and the guide ring is positioned below the first pressure-bearing scroll and the second pressure-bearing scroll; the guide ring is fixed with the mounting base;
the end face of the guide ring is provided with a conical matching surface matched with the end faces of the first pressure-bearing reel and the second pressure-bearing reel.
In a second aspect of the present invention,
a wire-constrained low-impact fused-type unlocking device, a fastening unit comprising: a first fusing constraining wire;
the fusing assembly includes: a first binding post and a second binding post;
the connecting piece includes: the pin pulling rod and the first driving spring;
the housing assembly includes: the insulation sleeve, the mounting cover, the isolation pad, the shell and the mounting cover screw;
the first fusing constraint wire is wound outside the split assembly, so that the split assembly embraces the clamping pin pulling rod;
the first binding post and the second binding post are fixedly arranged on the mounting cover; the first binding post and the second binding post are positioned outside the first fusing constraint wire;
the two ends of the first fusing constraint wire are fixedly connected with a first binding post and a second binding post respectively;
the first binding post and the second binding post are powered up, so that the first fusing constraint wire is heated and fused, and the constraint of the first fusing constraint wire on the split component is released;
insulating sleeves are respectively sleeved between the first binding post and the mounting cover and between the second binding post and the mounting cover, so that an insulating and isolating effect is achieved;
the two ends of the first driving spring are extruded between the pin pulling rod and the shell, and the first driving spring is used for providing a pretightening force for the pin pulling rod to push the split assembly to move radially outwards;
the isolation pad is arranged and fixed in the shell and is used for preventing the split assembly from exceeding the movement range after the constraint of the split assembly is released;
the mounting cover is fixedly connected with the shell through a mounting cover screw;
the pin pulling rod is inserted into one of the external pressed end or the pressed end.
Preferably, the inner wall of the split assembly is a taper hole, and the conical surface of the taper hole is matched with the pin pulling rod; the large diameter end of the taper hole faces one side of the first driving spring.
Preferably, the split assembly comprises: the first, second and third insulating pressure-bearing spools;
the first insulating pressure-bearing reel, the second insulating pressure-bearing reel and the third insulating pressure-bearing reel are circumferentially engaged and are clamped around the pin pulling rod; the inner wall surfaces of the first insulating pressure-bearing reel, the second insulating pressure-bearing reel and the third insulating pressure-bearing reel are provided with taper holes.
In a third aspect of the present invention,
a wire-constrained low-impact fused-type unlocking device, a fastening unit comprising: a second fusing constraining wire;
the fusing assembly includes: a third terminal and a second drive spring;
the connecting piece includes: a cutting rod and a limiting pull rod;
the housing assembly includes: the upper cover, the shell, the lower cover and the connecting screw;
the cutting rod is fixedly connected with the limiting pull rod; the second fusing constraint wire is wound outside the split assembly and used for enabling the split assembly to encircle the clamping limiting pull rod;
the upper cover, the lower cover and the shell are fixedly connected through connecting screws;
the lower cover and the second driving spring are sleeved outside the combined body of the cutting rod and the limiting pull rod; the two ends of the second driving spring are extruded between the radial flange of the cutting rod and the lower cover;
the second driving spring is used for providing a pretightening force for the cutting rod to drive the limiting pull rod to move towards the cutting rod along the axial direction; after the split assembly releases the encircling clamping of the cutting rod, the cutting rod stretches out to cut off the external binding belt, and the binding constraint of the binding belt on the external compression end or the compressed end is released;
the third binding post is fixedly arranged on the lower cover; the second fusing constraint wire is electrically connected with the third binding post; and the second fusing constraint wire is heated and fused under the electrifying action of the third binding post, so that the constraint of the second fusing constraint wire on the split assembly is released.
Preferably, the split assembly comprises: the first insulating bearing reel, the second insulating bearing reel and the third insulating bearing reel;
the first insulating bearing reel, the second insulating bearing reel and the third insulating bearing reel are circumferentially combined and clamped outside the limiting pull rod in a surrounding manner; the inner wall surfaces of the first insulating bearing reel, the second insulating bearing reel and the third insulating bearing reel form a taper hole matched with the taper section at the end part of the limit pull rod, and the small diameter end of the taper hole faces one side of the second driving spring.
Compared with the prior art, the invention has the advantages that:
(1) In the invention, 2-3 reels are wound to form the bearing component by adopting the constraint spring wire or the fusing constraint wire, and the technical scheme of triggering by the fuse is adopted, so that the radial decomposition reduction of a larger bearing force is realized, the unlocking triggering force is reduced to below 10N, and the separation impact is greatly reduced by fusing and unlocking the fuse. When the 30kN bearing is carried, compared with a fire explosive unlocking mode, the separation impact can be reduced from 3000 g-5000 g to less than 500g, and the reliability and safety of large bearing separation unlocking are ensured;
(2) According to the invention, the technical scheme of triggering the stainless steel fuse is adopted, and the stainless steel fuse is reliably connected and fused within the range of +/-150 ℃, so that the unlocking device can reliably work within a larger temperature range. Compared with non-initiating explosive device triggering modes such as memory alloy, paraffin and the like, the temperature application range of the unlocking device is greatly expanded, and the thermal control requirement on the unlocking device is reduced;
(3) According to the invention, as the technical scheme of triggering the stainless steel fuse is adopted, the diameter manufacturing size of the fuse is controlled to be between 0.1 and 0.5mm, and when the current is set to be between 2A and 5A, the unlocking time is controlled to be within 200ms, so that the response speed of the unlocking device is improved compared with non-initiating explosive trigger modes such as a memory alloy tube, paraffin and the like;
(4) In the invention, 2-3 reels are wound to form the structural form of the bearing component by adopting the constraint spring wire or the fusing constraint wire, so that the complexity of the mechanism inside the unlocking device is reduced, the functional components are arranged along the radial direction, and the light miniaturization and flattening design of the unlocking device with larger bearing capacity (8 kN-50 kN) are realized. Compared with the traditional similar products, the size of the 8kN series products is greatly reduced, the overall size of the 8kN series products is only phi 38 multiplied by 28mm, and the overall size of the 50kN series products is only phi 50 multiplied by 42mm;
(5) According to the invention, due to the adoption of the fuse part modularized design, the operation flow of replacing the fuse is simplified by the technical scheme of replacing the fuse after triggering, the reusability of the unlocking device is realized, the testability of the unlocking device is high, the unlocking device is more suitable for ground tests and experiments, and the on-orbit working reliability is improved.
Drawings
FIG. 1 is a three-dimensional view of a low impact release of the present invention;
FIG. 2 is a block diagram of the bearing portion of the unlocking device of the present invention;
FIG. 3 is a block diagram of a fused portion of the unlocking device of the present invention;
FIG. 4 is a three-dimensional view of a fused pin puller of the present invention;
FIG. 5 is a block diagram of a split assembly in a fused pin puller of the present invention;
fig. 6 is a structural view of the fuse cutout of the present invention.
Detailed Description
In order to meet the requirements of low impact, quick response and part of application scenes on flattening of an unlocking device structure, the invention provides a fused unlocking device based on a line constraint split pressure-bearing reel principle, serial design and verification are carried out, and two products of a fused pin puller and a fused cutter are designed and developed based on the line constraint principle.
A wire-constrained low-impact fused unlocking device, comprising: the device comprises a fastening unit, a split assembly, a fusing assembly, a connecting piece and a shell assembly. The fastening unit, the split assembly, the fusing assembly and the connecting piece are all arranged in the shell assembly; the shell component is fixedly connected to one of the external compression end and the compressed end; the fastening unit is used for clamping the split assembly circumferentially inwards, so that the split assembly clamps the fixed connecting piece and limits the axial movement of the connecting piece;
the fusing component is electrified to release the clamping and fixing of the fastening unit to the split component, so that the connecting piece moves axially under the action of pretightening force or external load, and the external compression end is separated from the compressed end to be unlocked. Further comprises: a guide structure; the connecting piece extrudes the split assembly to move along the matching surface on the guide structure under the action of pretightening force or external load, and the guide structure is used for ensuring that the separation unlocking process is smooth and no clamping stagnation occurs. The mating surface can act as a guide to enable radially outward movement of the lobe assembly.
The fastening unit includes: a constraint spring wire 3;
the split assembly includes: a first pressure spool 1 and a second pressure spool 2;
the connecting piece includes: a connecting pull rod 5;
the housing assembly includes: the guide rod 7, the guide rod nut 8, the shell mounting screw 14, the mounting base 15 and the mounting shell 16;
the constraint spring wire 3 is wound on the outer walls of the first pressure-bearing reel 1 and the second pressure-bearing reel 2, one end of the constraint spring wire 3 is fixedly connected with the first pressure-bearing reel 1 or the second pressure-bearing reel 2, and the other end of the constraint spring wire 3 is connected with the fusing component; after the fusing component is fused, the restraint spring wire 3 is released to wind and fix the first pressure-bearing reel 1 and the second pressure-bearing reel 2;
a radial retraction section is arranged in the middle of the connecting pull rod 5; the first pressure-bearing scroll 1 and the second pressure-bearing scroll 2 encircle the outside of the clamping connecting pull rod 5, and the middle of the first pressure-bearing scroll 1 and the second pressure-bearing scroll 2 is respectively provided with a matching surface corresponding to the radial retraction section of the connecting pull rod 5 for limiting the axial movement of the connecting pull rod 5;
the guide rod 7 and the guide rod nut 8 are matched for use and are used for axially and fixedly connecting the mounting base 15 and the mounting shell 16;
the circumferential wall surfaces of the mounting base 15 and the mounting shell 16 are circumferentially fixed through the shell mounting screw 14;
the connecting tie rod 5 is fixedly connected with one of the external compression end or the compressed end, and receives axial external force.
The fusing assembly includes: the fuse wire 4, the fuse wire pressing block 9, the fuse wire mounting seat 10, the wire welding post 11, the fuse wire pressing nut 12 and the fusing part mounting screw 13;
the fuse wire mounting seat 10 is fixedly mounted on the mounting base 15 through a fusing part mounting screw 13;
one end of the fuse 4 is crimped between the wire welding post 11 and the fuse mounting seat 10, and the other end of the fuse 4 is crimped between the fuse pressing block 9 and the fuse mounting seat 10 through the fuse pressing nut 12; there is no contact between the wire bond post 11 and the fuse block 9. The fuse wire 4 is a U-shaped bend line.
The other end of the constraint spring wire 3 passes through the fuse wire 4 and is fixedly connected with the fuse wire 4; the fuse 4 can be heated and fused in the energized state, and the fixed connection between the fuse 4 and the restraint spring 3 is released.
The guide structure includes: a guide ring 6;
the guide ring 6 is positioned above the mounting base 15, while the guide ring 6 is positioned below the first pressure-bearing reel 1 and the second pressure-bearing reel 2; the guide ring 6 is fixed with the mounting base 15;
the end face of the guide ring 6 is provided with a conical matching surface matched with the end faces of the first pressure-bearing reel 1 and the second pressure-bearing reel 2.
A wire-constrained low-impact fused unlocking device, comprising: the device comprises a fastening unit, a split assembly, a fusing assembly, a connecting piece and a shell assembly;
the fastening unit includes: a first fusing constraining wire 20;
the fusing assembly includes: a first binding post 21 and a second binding post 22;
the connecting piece includes: a pin pulling rod 25 and a first driving spring 26;
the housing assembly includes: insulating sleeve 23, mounting cap 24, spacer 27, housing 28 and mounting cap screw 29;
the first fusing constraint wire 20 is wound outside the split assembly, so that the split assembly embraces the clamping pin pulling rod 25;
the first binding post 21 and the second binding post 22 are fixedly mounted on the mounting cover 24; the first terminal 21 and the second terminal 22 are located outside the first fusing constraint wire 20;
the two ends of the first fusing constraint wire 20 are fixedly connected with a first binding post 21 and a second binding post 22 respectively;
by energizing the first binding post 21 and the second binding post 22, the first fusing constraint wire 20 is heated and fused, and the constraint of the first fusing constraint wire 20 on the split component is released;
an insulating sleeve 23 is sleeved between the first binding post 21 and the mounting cover 24 and between the second binding post 22 and the mounting cover 24 respectively, so that an insulating and isolating effect is achieved;
the two ends of the first driving spring 26 are pressed between the pin pulling rod 25 and the shell 28, and the first driving spring 26 is used for providing a pretightening force for pushing the pin pulling rod 25 to push the split assembly to move radially outwards; the pin pulling rod 25 is machined with an outer flange structure for compressing the spring 26.
The spacer 27 is mounted and fixed inside the housing 28 to prevent the split assembly from exceeding the range of motion after the split assembly is unconstrained.
The mounting cap 24 is fixedly connected with the housing 28 by a mounting cap screw 29;
the pin pulling rod 25 is inserted into one of the external pinched end or pinched end.
The inner wall of the split component is a taper hole, and the conical surface of the taper hole is matched with the pin pulling rod 25; the large diameter end of the taper hole faces the first drive spring 26 side.
The split assembly includes: a first insulating pressure spool 17, a second insulating pressure spool 18 and a third insulating pressure spool 19;
the first insulating pressure-bearing reel 17, the second insulating pressure-bearing reel 18 and the third insulating pressure-bearing reel 19 are circumferentially engaged and are clamped around the pin pulling rod 25; the inner wall surfaces of the first insulating pressure-bearing reel 17, the second insulating pressure-bearing reel 18, and the third insulating pressure-bearing reel 19 are tapered holes.
A wire-constrained low-impact fused unlocking device, comprising: the device comprises a fastening unit, a split assembly, a fusing assembly, a connecting piece and a shell assembly.
The fastening unit includes: a second fusing constraining wire 35;
the fusing assembly includes: a third post 36 and a second drive spring 38;
the connecting piece includes: a cut-off lever 30 and a limit lever 31;
the housing assembly includes: an upper cover 37, a housing 39, a lower cover 40, and a connection screw 41;
the cutting rod 30 is fixedly connected with the limit pull rod 31; the second fusing constraint wire 35 is wound outside the split assembly and is used for enabling the split assembly to encircle the clamping limiting pull rod 31;
the upper cover 37, the lower cover 40 and the outer shell 39 are fixedly connected through a connecting screw 41;
the lower cover 40 and the second driving spring 38 are sleeved outside the combination of the cutting rod 30 and the limiting pull rod 31; both ends of the second driving spring 38 are pressed between the radial flange of the cutoff bar 30 and the lower cover 40;
the second driving spring 38 is used for providing a pretightening force for the cutting rod 30 to drive the limit pull rod 31 to move towards the cutting rod 30 along the axial direction; after the split assembly releases the encircling clamping of the cutting rod 30, the cutting rod 30 stretches out to cut off the external binding belt, and the binding constraint of the binding belt on the external compression end or the compressed end is released;
the third binding post 36 is fixedly mounted on the lower cover 40; the second fusing restraint wire 35 and the third binding post 36 are electrically connected; the second fusing constraint wire 35 is heated and fused under the energizing action of the third binding post 36, and the constraint of the second fusing constraint wire 35 on the split assembly is released.
The split assembly includes: a first insulated tensile spool 32, a second insulated tensile spool 33, and a third insulated tensile spool 34;
the first insulating bearing reel 32, the second insulating bearing reel 33 and the third insulating bearing reel 34 are circumferentially engaged and are encircling and clamped outside the limiting pull rod 31; the inner wall surfaces of the first insulating bearing reel 32, the second insulating bearing reel 33 and the third insulating bearing reel 34 form taper holes matched with the taper sections at the end parts of the limiting pull rods 31, and the small diameter ends of the taper holes face to the side of the second driving springs 38.
Examples
The invention comprises a pressure bearing part, a fusing part, a mounting shell and the like. The bearing part consists of a first bearing reel 1, a second bearing reel 2, a constraint spring wire 3, a connecting pull rod 5, a guide ring 6 and a mounting base 15, and the main functions of the bearing part are that the bearing part is effectively connected with an external compression end and a compressed end through the connecting pull rod 5 and provides bearing capacity. In the bearing process, the first bearing reel 1 and the second bearing reel 2 are restrained by the restraint spring wire 3 on the outer cylindrical surface, the bearing surfaces of the first bearing reel 1 and the second bearing reel 2 are manufactured into partial spherical surfaces or conical surfaces, and when the partial spherical surfaces or conical surfaces are combined, an integral body with a ball socket or a conical surface is formed, and the connecting pull rod 5 is extruded and limited by the ball socket or the conical surface. The whole body formed by the first pressure-bearing reel 1 and the second pressure-bearing reel 2 is contacted with the end face of the guide ring 6, the upper end face of the guide ring 6 is made into a conical surface shape, and the guide ring is matched with a groove on the mounting base 15 for mounting. The pressure-bearing scroll in the pressure-bearing part can be designed into a structure form of 2-3 scroll combinations, and the pressure-bearing scroll is separated along the radial direction when unlocked, so that the release of the connecting pull rod is realized. As indicated in fig. 2, the connecting rod 5 is subjected to a downward pulling force.
The fusing part consists of a fuse 4, a fuse pressing block 9, a fuse mounting seat 10, a wire welding post 11 and a fuse pressing nut 12, and the main functions of the fusing part are to trigger and unlock the unlocking device by realizing the fusing of the fuse 4. The fuse 4 is provided with wire bonding posts 11 at both ends thereof, and is connected to the fuse mount 10 together with the fuse press block 9 by a fuse press nut 12. The fuse 4 is made of stainless steel materials, the manufacturing size of the diameter of the fuse is controlled to be between 0.1mm and 0.5mm, and when the current is set to be between 2A and 5A, the quick response of the unlocking device is realized.
The invention also comprises a mounting shell 16, a guide rod 7, a guide rod nut 8, a fusing part mounting screw 13 and a shell mounting screw 14, and mainly provides mounting, guiding and protecting functions for each part of the unlocking device. The two guide rods 7 penetrate through the first pressure-bearing scroll 1 and the second pressure-bearing scroll 2 of the pressure-bearing part to reserve grooves in the middle, are connected with the installation base 15 in a threaded mode, the upper ends of the guide rods penetrate through the installation shell 16, and the upper ends of the installation shell 16 are fixed in a threaded mode through the guide rod nuts 8. The fused portion is connected to the mounting base 15 by mounting screws 13. The fuse 4 in the fusing part is connected with a hook formed on the binding spring wire 3. The mounting housing 16 is screwed with the mounting base 15 by housing mounting screws 14.
The invention discloses a fusing type pin puller and a fusing type cutter by using the same principle of the invention.
The fusing pin puller consists of a pressure-bearing fusing part, a shell, a spring and the like. The pressure-bearing fusing part includes: the first insulating pressure-bearing reel 17, the second insulating pressure-bearing reel 18, the third insulating pressure-bearing reel 19, the first fusing constraint wire 20, the first binding post 21, the second binding post 22, the insulating sleeve 23 and the mounting cover 24. Their main function is to realize the pressure-bearing limit and release of the pin pulling rod 25. The invention is different from the unlocking device in that the fuse wire is used as both fusing and constraint spring wire, the pressure-bearing rotating shaft is limited during pressure bearing, and fusing is triggered during unlocking. In the bearing process, the first insulating bearing reel 17, the second insulating bearing reel 18 and the third insulating bearing reel 19 are restrained by the first fusing restraint wire 20 on the outer cylindrical surface to form a whole with a conical surface, and the pin pulling rod 25 is extruded and limited by the conical surface. The whole body formed by the first insulating pressure-bearing reel 17, the second insulating pressure-bearing reel 18 and the third insulating pressure-bearing reel 19 is in end face contact with the mounting cover 24, and two ends of the first fusing constraint wire 20 are respectively connected and conducted with the first binding post 21 and the second binding post 22 and are fixed by using structural adhesive. The insulating sleeve 23 is arranged in the holes between the mounting cover 24 and the first binding post 21 and the second binding post 22, so that insulation between the mounting cover 24 and the first binding post 21 and the second binding post 22 is ensured. The first fusing constraint wire 20 is heated and fused in an electrified state, and the pin pulling rod 25 is driven by the first driving spring 26 to complete pin pulling.
The fuse pin puller further comprises a pin pulling rod 25, a first drive spring 26, a spacer 27, a housing 28 and a mounting cap screw 29. They mainly provide the pin puller with a pin pulling force and a protective function. When bearing pressure, the pin pulling rod 25 is matched with the pressure-bearing fusing part for limiting. The other end of the pin pulling rod 25 is matched with a first driving spring 26, the first driving spring 26 is in a precompressed state, and pin pulling force is provided for the pin pulling rod 25 when the pin pulling rod is unlocked. The first drive spring 26 is mounted within the housing 28 and cooperates with a stop. The isolating pad 27 is fixed in the inner cavity of the shell 28 to isolate the pressure-bearing fusing part and prevent the insulating pressure-bearing scroll from exceeding the movement range during unlocking. The mounting cap 24 is screwed to the housing 28 using a mounting cap screw 29.
The fuse cutter includes: the cutting rod 30, the limit pull rod 31, the first insulating bearing reel 32, the second insulating bearing reel 33, the third insulating bearing reel 34, the second fusing restraint wire 35, the third binding post 36, the upper cover 37, the second driving spring 38, the outer shell 39, the lower cover 40 and the connecting screw 41.
Similar to the fuse pin puller, the first, second and third insulating bearing reels 32, 33, 34 are integrally restrained by the second fuse restraining wire 35, the limit pull rod 31 is integrally restrained by the integral, and the limit pull rod 31 is integrally screwed with the cut-off rod 30. When unlocked, the second drive spring 38 drives the trip lever 30 in motion. The upper cover 37, the housing 39, and the lower cover 40 are screwed using a connection screw 41. The second fusing constraint wire 35 is heated and fused in the electrified state, and the whole formed by screwing the limiting pull rod 31 and the cutting rod 30 is driven by the second driving spring 38 to extend and cut.
The unlocking process of the embodiments of the present invention is as follows.
As shown in fig. 1, the unlocking device from the locking state to the unlocking state mainly comprises three steps:
1. the fuse wire 4 is heated and fused in the electrified state, so that the limit of the hook at one end of the constraint spring wire 3 is released, and the constraint of the constraint spring wire 3 on the first pressure-bearing reel 1 and the second pressure-bearing reel 2 is released.
2. The first pressure-bearing reel 1 and the second pressure-bearing reel 2 are separated along the radial direction under the action of the tension force of the connecting pull rod 5.
3. The connecting rod 5 completes the release.
As shown in fig. 4, the fuse pin puller from the plug pin limit to the plug pin pulling mainly comprises three steps:
1. the first fusing restraint wire 20 is heated and fused in the energized state, and the restraint of the first insulating pressure-bearing reel 17, the second insulating pressure-bearing reel 18 and the third insulating pressure-bearing reel 19 is released.
2. The first, second and third insulating pressure-bearing reels 17, 18, 19 are radially separated by the pressure of the pin-pulling rod 25.
3. The pin pulling rod 25 is driven by a first driving spring 26 to complete pin pulling.
As shown in fig. 6, the fuse-type cutter mainly includes three steps from the retracted state to the extended cutting:
1. the second fusing restraint wire 35 is heated and fused in the energized state, and the restraint of the first insulating pull-up reel 32, the second insulating pull-up reel 33, and the third insulating pull-up reel 34 is released.
2. The first, second and third insulating tensile reels 32, 33, 34 are separated in the radial direction by the tension of the stopper rod 31.
3. The whole formed by the screwing of the limit pull rod 31 and the cutting rod 30 is driven by the second driving spring 38 to complete the extending cutting.
The above is only one embodiment of the technical scheme of the invention, and the unlocking, pin pulling or cutting under the condition of different bearing capacities can be realized by changing the structural size according to actual needs.
Although the present invention has been described in terms of the preferred embodiments, it is not intended to be limited to the embodiments, and any person skilled in the art can make any possible variations and modifications to the technical solution of the present invention by using the methods and technical matters disclosed above without departing from the spirit and scope of the present invention, so any simple modifications, equivalent variations and modifications to the embodiments described above according to the technical matters of the present invention are within the scope of the technical matters of the present invention. The embodiments of the present application and the technical features in the embodiments may be combined with each other without conflict.
What is not described in detail in the present specification is a well known technology to those skilled in the art.
Claims (10)
1. A wire-constrained low-impact fused unlocking device, comprising: the device comprises a fastening unit, a split assembly, a fusing assembly, a connecting piece and a shell assembly;
the fastening unit, the split assembly, the fusing assembly and the connecting piece are all arranged in the shell assembly;
the shell component is fixedly connected to one of the external compression end and the compressed end;
the fastening unit is used for clamping the split assembly circumferentially inwards, so that the split assembly clamps the fixed connecting piece and limits the axial movement of the connecting piece;
the fusing component is electrified to release the clamping and fixing of the fastening unit to the split component, so that the connecting piece moves axially under the action of pretightening force or external load, and the external compression end is separated from the compressed end to be unlocked.
2. The wire-constrained low-impact fused unlocking device according to claim 1, further comprising: a guide structure;
the connecting piece extrudes the split assembly to move along the matching surface on the guide structure under the action of pretightening force or external load.
3. A wire-constrained low-impact fused unlocking device according to claim 2, wherein the fastening unit comprises: a restraining spring wire (3);
the split assembly includes: a first pressure-bearing reel (1) and a second pressure-bearing reel (2);
the connecting piece includes: a connecting pull rod (5);
the housing assembly includes: the device comprises a guide rod (7), a guide rod nut (8), a shell mounting screw (14), a mounting base (15) and a mounting shell (16);
the constraint spring wire (3) is wound on the outer walls of the first pressure-bearing reel (1) and the second pressure-bearing reel (2), one end of the constraint spring wire (3) is fixedly connected with the first pressure-bearing reel (1) or the second pressure-bearing reel (2), and the other end of the constraint spring wire (3) is connected with the fusing component; after the fusing component is fused, the constraint spring wire (3) is released to wind and fix the first pressure-bearing scroll (1) and the second pressure-bearing scroll (2);
a radial retraction section is arranged in the middle of the connecting pull rod (5); the first pressure-bearing scroll (1) and the second pressure-bearing scroll (2) encircle the outside of the clamping connecting pull rod (5), and the middle parts of the first pressure-bearing scroll (1) and the second pressure-bearing scroll (2) are respectively provided with a matching surface corresponding to the radial retraction section of the connecting pull rod (5) for limiting the axial movement of the connecting pull rod (5);
the guide rod (7) and the guide rod nut (8) are matched for use and are used for axially and fixedly connecting the mounting base (15) and the mounting shell (16);
the circumferential wall surfaces of the mounting base (15) and the mounting shell (16) are circumferentially fixed through shell mounting screws (14);
the connecting pull rod (5) is fixedly connected with one of the external compression end and the compressed end and receives axial external force.
4. A line-binding low impact fuse type delatch as claimed in claim 3, wherein the fuse assembly comprises: the fuse wire comprises a fuse wire (4), a fuse wire pressing block (9), a fuse wire mounting seat (10), a wire welding column (11), a fuse wire compression nut (12) and a fuse part mounting screw (13);
the fuse wire mounting seat (10) is fixedly mounted on the mounting base (15) through a fuse part mounting screw (13);
one end of the fuse wire (4) is pressed between the wire welding post (11) and the fuse wire mounting seat (10), and the other end of the fuse wire (4) is pressed between the fuse wire pressing block (9) and the fuse wire mounting seat (10) through the fuse wire compression nut (12);
the other end of the constraint spring wire (3) passes through the fuse wire (4) and is fixedly connected with the fuse wire (4); the fuse wire (4) can be heated and fused in the electrified state, and the fixed connection between the fuse wire (4) and the constraint spring wire (3) is released.
5. A wire-constrained low-impact fused unlocking device according to claim 3, wherein the guide structure comprises: a guide ring (6);
the guide ring (6) is positioned above the mounting base (15), and the guide ring (6) is positioned below the first pressure-bearing scroll (1) and the second pressure-bearing scroll (2); the guide ring (6) is fixed with the mounting base (15);
the end face of the guide ring (6) is provided with a conical matching surface matched with the end faces of the first pressure-bearing reel (1) and the second pressure-bearing reel (2).
6. The wire-constrained low-impact fused unlocking device according to claim 1, wherein the fastening unit comprises: a first fusing constraining wire (20);
the fusing assembly includes: a first binding post (21) and a second binding post (22);
the connecting piece includes: a pin pulling rod (25) and a first driving spring (26);
the housing assembly includes: an insulating sleeve (23), a mounting cover (24), a spacer (27), a shell (28) and a mounting cover screw (29);
the first fusing constraint wire (20) is wound outside the split assembly, so that the split assembly embraces the clamping pin pulling rod (25);
the first binding post (21) and the second binding post (22) are fixedly arranged on the mounting cover (24); the first binding post (21) and the second binding post (22) are positioned outside the first fusing constraint wire (20);
two ends of the first fusing constraint wire (20) are fixedly connected with a first binding post (21) and a second binding post (22) respectively;
the first binding post (21) and the second binding post (22) are powered up, so that the first fusing constraint wire (20) is heated and fused, and the constraint of the first fusing constraint wire (20) on the split component is released;
an insulating sleeve (23) is respectively sleeved between the first binding post (21) and the mounting cover (24) and between the second binding post (22) and the mounting cover (24), so that an insulating and isolating effect is achieved;
the two ends of the first driving spring (26) are extruded between the pin pulling rod (25) and the shell (28), and the first driving spring (26) is used for providing a pretightening force for pushing the pin pulling rod (25) to push the split assembly to move radially outwards;
the isolation pad (27) is arranged and fixed in the shell (28) and is used for preventing the split assembly from exceeding the movement range after the constraint of the split assembly is released;
the mounting cover (24) is fixedly connected with the shell (28) through a mounting cover screw (29);
the pin pulling rod (25) is inserted into one of the external pressed end or the pressed end.
7. The wire-constraint low-impact fusing type unlocking device of claim 6, wherein the inner wall of the split assembly is a taper hole, and the taper surface of the taper hole is matched with the pin pulling rod (25); the large diameter end of the taper hole faces to one side of the first driving spring (26).
8. The wire-constrained low-impact fused unlocking device according to claim 7, wherein the split assembly comprises: a first insulating pressure spool (17), a second insulating pressure spool (18) and a third insulating pressure spool (19);
the first insulating pressure-bearing reel (17), the second insulating pressure-bearing reel (18) and the third insulating pressure-bearing reel (19) are circumferentially engaged and are encircling and clamped outside the pin pulling rod (25); the inner wall surfaces of the first insulating pressure-bearing reel (17), the second insulating pressure-bearing reel (18) and the third insulating pressure-bearing reel (19) form taper holes.
9. The wire-constrained low-impact fused unlocking device according to claim 1, wherein the fastening unit comprises: a second fusing constraining wire (35);
the fusing assembly includes: a third terminal (36) and a second drive spring (38);
the connecting piece includes: a cutting rod (30) and a limit pull rod (31);
the housing assembly includes: an upper cover (37), a housing (39), a lower cover (40) and a connecting screw (41);
the cutting rod (30) is fixedly connected with the limit pull rod (31); the second fusing constraint wire (35) is wound outside the split assembly and used for enabling the split assembly to encircle the clamping limiting pull rod (31);
the upper cover (37), the lower cover (40) and the shell (39) are fixedly connected through a connecting screw (41);
the lower cover (40) and the second driving spring (38) are sleeved outside the combined body of the cutting rod (30) and the limiting pull rod (31); both ends of the second drive spring (38) are pressed between the radial flange of the cutoff rod (30) and the lower cover (40);
the second driving spring (38) is used for providing a pretightening force for the cutting rod (30) to drive the limit pull rod (31) to move towards the cutting rod (30) along the axial direction; after the split assembly releases the encircling clamping of the cutting rod (30), the cutting rod (30) stretches out to cut off the external binding belt, and the binding constraint of the binding belt on the external compression end or the compressed end is released;
the third binding post (36) is fixedly arranged on the lower cover (40); the second fusing constraint wire (35) is electrically connected with the third binding post (36); the second fusing constraint wire (35) is heated and fused under the energizing action of the third binding post (36), and the constraint of the second fusing constraint wire (35) on the split assembly is released.
10. The wire-constrained low-impact fused unlocking device according to claim 9, wherein the split assembly comprises: a first insulating tensile reel (32), a second insulating tensile reel (33) and a third insulating tensile reel (34);
the first insulating bearing reel (32), the second insulating bearing reel (33) and the third insulating bearing reel (34) are circumferentially combined, and are encircling and clamped outside the limiting pull rod (31); a first insulating pull-up reel (32),
The inner wall surfaces of the second insulating bearing reel (33) and the third insulating bearing reel (34) form taper holes matched with the taper sections at the end parts of the limiting pull rods (31), and the small diameter ends of the taper holes face one side of the second driving springs (38).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311629990.0A CN117602112A (en) | 2023-11-30 | 2023-11-30 | Wire constraint low-impact fusing type unlocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311629990.0A CN117602112A (en) | 2023-11-30 | 2023-11-30 | Wire constraint low-impact fusing type unlocking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117602112A true CN117602112A (en) | 2024-02-27 |
Family
ID=89951283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311629990.0A Pending CN117602112A (en) | 2023-11-30 | 2023-11-30 | Wire constraint low-impact fusing type unlocking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117602112A (en) |
-
2023
- 2023-11-30 CN CN202311629990.0A patent/CN117602112A/en active Pending
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