CN114132534B - Low-impact large-bearing stack type multi-star locking and releasing mechanism and working method thereof - Google Patents
Low-impact large-bearing stack type multi-star locking and releasing mechanism and working method thereof Download PDFInfo
- Publication number
- CN114132534B CN114132534B CN202111287462.2A CN202111287462A CN114132534B CN 114132534 B CN114132534 B CN 114132534B CN 202111287462 A CN202111287462 A CN 202111287462A CN 114132534 B CN114132534 B CN 114132534B
- Authority
- CN
- China
- Prior art keywords
- locking
- push rod
- nut
- roller
- sliding block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Clamps And Clips (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a low-impact large-bearing stack type multi-star locking and releasing device and a working method thereof, and particularly relates to the technical field of spacecraft structures; the device comprises a satellite bottom plate, a locking and releasing device, a pressing rod, a pre-tightening mechanism, a pressing rod push rod mechanism and a stackable satellite structure. The satellite bottom plate provides a fixed platform; the locking and releasing device realizes the locking of the stackable satellites and the release of the pressing rod; the compression rod is connected with the locking and releasing device to realize the tensioning of the stackable satellites; the pre-tightening mechanism is used for compressing the stacked satellites to provide enough pre-tightening force; the pressing rod push rod mechanism pushes the pressing rod to separate far after unlocking and releasing the pressing rod, so that the safety of the separation of stackable satellites is ensured. The novel non-initiating explosive device locking and releasing device is reasonable in structure and reliable in performance, has the characteristics of small unlocking impact, no pollution, high bearing capacity, safety, reliability and good separation synchronism, is suitable for locking and releasing of stacked satellites, and ensures the stability of the stacked satellites in a rocket launching stage.
Description
Technical Field
The invention belongs to the technical field of spacecraft structures, and particularly relates to a low-impact large-bearing stack type multi-star locking and releasing mechanism and a working method thereof.
Background
With the development of space exploration and network technology, satellite application is expanded. The multi-star networking technology is developed rapidly, and the traditional one-arrow one-star launching mode is difficult to meet the current situation in the aspects of launching cost, networking efficiency, economic timeliness and the like. An arrow multi-star launching technology is rapidly developed at home and abroad in the present year so as to achieve the aim of rapid networking. The one-arrow-multiple-satellite technology is that a plurality of satellites are simultaneously sent into a designated orbit, so that satellite in-orbit networking is rapidly completed, and the requirement of constellation rapid networking deployment tasks is met.
In the traditional multi-satellite launching mode, the satellite layout mostly adopts an externally-hung central cylinder adapter or a multi-satellite parallel type, so that the space utilization rate of the rocket is reduced; the other mode of stacking satellites is more and more common, and the structure stacks a plurality of same satellites together through the bearing posts, so that the utilization rate of the rocket fairing can be greatly improved, and the launching cost is saved.
The connection and separation release technology is a key technology in the field of space transportation technology, and is particularly important for multi-star connection and separation modes. The traditional inter-satellite locking mainly adopts a packing belt type and point type inter-satellite unlocking separation mode, and the problems of poor safety, large impact load, pollutant generation after detonation and the like of the fire work separation are solved, and the traditional unlocking separation is difficult to meet the existing multi-satellite separation mode, so that the technical requirements of low impact, large bearing, energy conservation, environmental protection, good separation synchronism and the like become a new development direction.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a non-initiating explosive device locking and releasing mechanism which has the advantages of no pollution, low impact, large bearing, safety, reliability, good separation synchronism and repeated detection and use and is used for the locking and releasing of a novel stackable satellite.
The invention is realized in the following way:
a low-impact large-bearing stack type multi-satellite locking and releasing device is used for locking and releasing a satellite assembly formed by stacking a plurality of satellite bodies layer by layer; the locking and releasing device comprises a stacking satellite bottom plate, a locking and releasing mechanism, a pressing rod and a satellite body; the satellite body comprises bearing columns arranged on the side surfaces of the satellite bodies, and when the satellite assembly is arranged on the stacked satellite base plate, the bearing columns of the satellite bodies are connected together; the two pressing rods are arranged on two sides of the connected bearing column and apply pressure along the axis direction of the satellite assembly for locking the satellite assembly, and a locking and releasing mechanism is arranged between the pressing rods and the stacked satellite base plate.
Further, the locking and releasing mechanism comprises a shell, a lower slide block supporting seat, a lower slide block, a memory alloy wire, a reset spring, a clamping seat, an upper slide block, a first separation nut, a second driving spring, a clamp and a screw; the shell, the lower slide block supporting seat and the clamping seat are fixedly connected with the stacked satellite bottom plate; the lower sliding block supporting seat is arranged at the bottom of the inner cavity of the shell, and the clamping seat is arranged in the middle of the inner cavity of the shell; the lower slide block is arranged in the lower slide block supporting seat and can complete the releasing and locking actions by moving up and down along the axis; the memory alloy wire passes through the U-shaped inner groove of the lower sliding block, and two ends of the memory alloy wire are fixed on the clamping seat; the reset spring is fixed between the lower slider boss and the clamping seat limiting groove; when the lock is unlocked, the memory alloy wire is contracted by electrifying, and the lower sliding block is pulled to overcome the pressing force of the reset spring to move upwards; the upper part of the lower sliding block extends into the inner cavity of the upper sliding block and can slide along the inner cavity of the upper sliding block, the upper sliding block is connected with the lower sliding block through a first release structure, the top end surface of the upper sliding block is connected with the top wall of the inner cavity of the shell through a second driving spring, and the upper sliding block is limited with the clamping seat through a step surface; the screw penetrates through the inner cavity of the shell from the top end opening of the shell and penetrates through the clamping seat, a threaded section of the screw positioned in the shell is in threaded connection with a first separation nut and a second separation nut which are combined together at two sides of the threaded section, the first separation nut and the second separation nut are limited by the clamping seat to axially displace, and the bottom end of the screw is abutted against the clamping seat; the first separation nut, the second separation nut and the inner wall of the upper sliding block are connected through a second release structure; the section of the screw outside the shell is connected with the compression rod through a connecting mechanism and used for locking and releasing the compression rod.
Furthermore, the connecting mechanism is characterized in that a clamp is arranged at the position, above the shell, of the screw, and a first driving spring is arranged between the lower end face of the clamp and the upper end face of the shell; the lateral boss is arranged at the position, close to the bottom end, of the compression rod, the through hole is formed in the boss, the screw penetrates through the through hole during installation, after the clamp is installed, the boss on the compression rod is locked under the action of the first driving spring by utilizing the space between the clamp and two end faces of the screw cap.
Further, the first release structure comprises a first lower roller and a second lower roller, the first lower roller and the second lower roller are symmetrically arranged in a sliding groove between the lower slider and the upper slider, the upper slider is mutually matched and arranged through a semicircular boss in the middle of two end faces and semicircular grooves at two ends of the inner wall of the shell, the upper slider is used for limiting radial movement of the upper slider, and an arc-shaped groove at the lower end of the upper slider is mutually matched with the first lower roller and the second lower roller and is used for limiting axial movement of the upper slider; when the lower slide block moves upwards, the first lower roller and the second lower roller roll inwards into the convergence section in the sliding groove of the lower slide block, and the upper slide block is unlocked and slides downwards.
Further, the second release structure includes a first upper roller, a second upper roller, a third upper roller, a fourth upper roller; the third upper roller and the fourth upper roller are arranged in the sliding groove at the upper part of the clamping seat; the first upper roller and the second upper roller are arranged in the sliding groove in the middle of the clamping seat, and the four upper rollers are contacted with the inner wall surface of the upper sliding block; the first upper roller and the third upper roller are matched with a groove on the outer wall surface of the first separation nut and are used for limiting radial movement of the first separation nut; the second upper roller and the fourth upper roller are matched with a groove on the outer wall surface of the second separation nut and are used for limiting radial movement of the second separation nut; when the upper sliding block slides downwards, the four upper rollers fall into grooves correspondingly formed in the inner wall surface of the upper sliding block, the first separating nut and the second separating nut are separated in the radial direction, the first separating nut is not meshed with the thread section of the screw any more, and the screw is unlocked in the axial direction under the action of the first driving spring.
Further, a splitting aid cone table is arranged between the screw and the clamping seat and is arranged in a limiting groove in the middle of the clamping seat through a disc spring; the outer cone table surface of the auxiliary separation cone table is matched with the inner cone table surface at the bottom ends of the first separation nut and the second separation nut.
Further, a pre-tightening mechanism is arranged at the top end of the pressing rod and used for tightening the satellite assembly to ensure stability; the pre-tightening mechanism comprises a pressing head, a pre-tightening pressure head, a spring sleeve, a third spring, a balance plate and a nut; the lower end of the compression head is a conical boss, the upper end of the compression head is fixed under the pre-tightening pressure head, and the conical boss is matched with the bearing column by respectively penetrating through a compression rod through the through holes on the left side and the right side; the two spring sleeves are respectively arranged in the mounting holes on two sides of the pre-tightening pressure head and fixedly connected with the pre-tightening pressure head, the third spring is arranged in the spring sleeve, two insertion pipes corresponding to the mounting holes of the pre-tightening pressure head are arranged on the balance plate, the pressing rod penetrates through the spring sleeve and the insertion pipes, and the top end of the pressing rod is locked with the screw thread of the pressing rod through a nut.
Further, a compression rod reinforcing ring is bridged between the two compression rods, and a compression rod push rod mechanism is arranged on the inner end surface of the compression rod reinforcing ring and used for completing outward separation action of the compression rods; the pressing rod push rod mechanism comprises a push rod base, a push rod shell, a push rod spring, balls, an end cover and a push rod; the push rod base is fixedly arranged on the inner end surface of the reinforcing ring of the appointed compression rod; the push rod shell is fixed on the push rod base, and the push rod passes through the through hole on the push rod shell to perform telescopic movement; the push rod spring is fixed between a boss at the rear end of the push rod and a boss at the upper end of the push rod base; the ball is arranged in a spherical groove at the front end of the push rod, and the axial movement is restrained through the threaded fit between the end cover and the push rod.
Further, the stackable satellite stacking mode is to stack a plurality of layers of satellites layer by layer, the satellite bodies are consistent in size, the satellites adopt a flat plate type structure, a single layer adopts two parallel satellites, the bearing columns adopt a male-female head mode, the grooves at the lower end of the grooves at the upper end are provided with bosses, each satellite adopts three bearing columns to form a triangular stable stress mode, and the bearing columns at the junction of the two satellites are combined in an upper-lower section mode.
In addition, the invention also provides a working method of the low-impact large-bearing stack type multi-star locking and releasing device, which comprises the following steps:
step 1, locking process: when the locking release mechanism is in a locking state, the lower sliding block is limited to axially move for locking under the action of the reset spring; under the action of a first driving spring, the upper sliding block generates radial force on the lower sliding block by extruding the first lower roller and the second lower roller, and the axial movement of the upper sliding block is limited to be locked; the first separating nut and the second separating nut are locked by radial force generated by the fact that the upper sliding block extrudes the first upper roller, the second upper roller, the third upper roller and the fourth upper roller; the screw is locked through threaded connection in the locking state of the first separation nut and the second separation nut;
step 2 release process: when the locking and releasing mechanism is released, the memory alloy wire is electrified and heated to generate shrinkage deformation, so that the lower sliding block is driven to move upwards; when the first lower roller and the second lower roller move upwards on the lower sliding block, the first lower roller and the second lower roller are extruded by the upper sliding block to generate radial movement, and slide into a convergence section of a circular groove of the lower sliding block, so that the axial constraint of the upper sliding block is relieved; the upper sliding block moves downwards under the action of a first driving spring; the first upper roller, the second upper roller, the third upper roller and the fourth upper roller move radially under the acting force of the first separation nut and the second separation nut, and move into the semicircular groove on the inner wall of the upper sliding block, so that the radial constraint on the first separation nut and the second separation nut is relieved; the first separation nut and the second separation nut interact with each other through the conical boss on the auxiliary separation frustum and the clamping seat to finish separation unlocking actions; under the action of a second driving spring, the screw drives the clamp to move upwards in a separating way to finish unlocking and releasing;
step 3, push rod process: when the pressing rod push rod mechanism is locked, the push rod is retracted to enable the push rod spring to be in a compressed state, and the ball fixed at the end part of the push rod is in close contact with the bearing column; when the pressing rod push rod mechanism is released, the pressing rod is unlocked and separated, and the spring is reset to push the push rod and the ball to axially move, so that the outward movement of the pressing rod is completed.
Compared with the prior art, the invention has the beneficial effects that:
1. the novel satellite structure is developed by adopting a stack type stacking mode, so that the space utilization rate of the rocket is greatly improved, and the launching cost is reduced.
2. The invention abandons the traditional central cylinder adapter form, adopts the male and female head bearing column form to bear force, has simple and reliable structure and high universality, and is convenient for satellite separation.
3. The invention adopts the memory alloy as the driving element, provides a novel non-initiating explosive device unlocking and separating device, and has the characteristics of no pollution, small impact load, large bearing, short unlocking time, high reliability and the like.
4. The invention adopts the disc spring as the main separating force of the separating nut, the conical boss of the clamping seat is designed to be matched with the separating nut to be auxiliary separating force, and the two work together, so that the invention has the advantages of short stroke, large load, small impact load, good stability, small occupied space, high separating reliability and the like.
5. The upper end face and the lower end face of the separation nut are conical holes, and the separation nut is in radial separation with the auxiliary separation frustum and the conical boss of the clamping seat through force transmission in the separation process, so that the separation nut is facilitated to separate.
6. The pretightening force mechanism transmits force in a form of an extrusion spring, realizes a pretightening force soft contact providing form, prevents hard contact from damaging a satellite body structure, and has adjustability.
Drawings
Figure 1 is a schematic view of the entire stackable satellite locking arrangement of the present invention,
figure 2 is a schematic view of the stackable satellite in its unlocked position,
figure 3 is a schematic diagram of a single-star architecture of a stackable satellite in accordance with the present invention,
figure 4 is a schematic diagram of a single layer satellite stack of stackable satellites in accordance with the present invention,
figure 5 is a schematic view of the structure of the pressing rod in the invention,
figure 6 is an enlarged partial schematic view of the bottom of the compression bar structure of the present invention,
figure 7 is a schematic view showing a locked state of the lock release mechanism in the present invention,
figure 8 is an enlarged partial schematic view of the separation-assist structure of the present invention,
figure 9 is a schematic view showing a release state of the lock release mechanism in the present invention,
figure 10 is a schematic view of the structure of the clamping seat in the invention,
figure 11 is a schematic front view of the structure of the clamping seat in the invention,
figure 12 is a schematic diagram of the pretensioning mechanism structure in the present invention,
FIG. 13 is a schematic view showing a locked state of a push rod mechanism of a hold-down lever in the present invention,
fig. 14 is a schematic view showing a release state of the push rod mechanism of the hold-down lever in the present invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and specifically described in detail below with reference to the accompanying drawings in the embodiments of the present invention, and the specific implementations described herein are only for explaining the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1-4 in the drawings of the specification, the low-impact large-bearing stacked multi-star locking release mechanism based on constellation networking is formed by stacking layers in a stacking mode, a star 401 is of a flat plate type structure, two satellites are arranged side by side in a single layer, each layer of star is stacked through cooperation of bearing columns 402 arranged on the side face of the star 401, the bearing column structure 402 is of a male-female type, the lower end boss of an upper end groove is Shan Xingcheng force of a three-point bearing mode, the three bearing columns 402 are respectively fixed on the side face of the star 401, and the bearing columns 402 at the junction of the two side-by-side star 401 are combined together in an upper-lower two-section mode to form a triangular stable bearing mode for satellite bearing, and each layer of star is assembled and stacked according to the same mode to form a satellite assembly. Two sides of each bearing column 402 combination of the satellite combination are respectively provided with a compression rod 200, a compression rod reinforcing ring 201 is bridged between the two compression rods 200, and the top ends of the two compression rods 200 are provided with a pre-tightening mechanism 500 for tightening the satellite combination to ensure stability; a pressing rod push rod mechanism 300 is arranged on the inner end surface of the pressing rod reinforcing ring 201 and is used for completing the outward separation action of the pressing rod 200; a lock release mechanism 100 is installed between each hold-down bar 200 and the stacked satellite base plate 1. The satellite assembly is pressed and fixed by tightening the pressing rod 200 through the locking release mechanism 100, and the pressing rod 200 is sprung outwards under the combined action of the separation of the locking release mechanism 100 and the pressing rod push rod mechanism 300 during unlocking, so that unlocking separation is performed.
As shown in fig. 5 to 6, in the compression bar 200 device of the present invention, a compression bar reinforcing ring 201 is bridged at the position of two compression bars 200 near the top, lateral bosses are provided at the position of each compression bar 200 near the bottom, and through holes are provided on the bosses for passing through screws 121 in the locking and releasing device 100; the stacked satellites are tensioned and fixed by being connected with the locking release mechanism 100 positioned at the bottom of the compression rod 200 and the pretightening force mechanism 500 positioned at the top of the compression rod 200, so that the satellite launching stage is not separated, and the stability and the safety of the whole system are ensured.
As shown in fig. 7 to 11, the lock release device 100 of the present invention mainly includes a housing 101, a lower slider supporting seat 102, a lower slider 103, a first lower roller 104, a second lower roller 105, a memory alloy wire 106, a return spring 107, a clamping seat 108, an upper slider 109, a first upper roller 110, a second upper roller 111, a third upper roller 112, a fourth upper roller 113, a first separating nut 114, a second separating nut 115, a separation assisting cone 116, a disc spring 117, a first driving spring 118, a second driving spring 119, a clip 120, and a screw 121. The shell 101, the lower slider supporting seat 102 and the clamping seat 108 are fixedly connected with the bottom plate 1, the memory alloy wire 106 passes through a U-shaped inner groove in the lower slider 103, two ends of the memory alloy wire are fixed on the clamping seat 108, the lower slider 103 is installed in the lower slider supporting seat 102, the return spring 107 is fixed between a boss of the lower slider 103 and a limiting groove of the clamping seat 108, the first lower roller 104 and the second lower roller 105 are installed in a sliding groove at the lower part of the clamping seat 108, the upper slider 109 is arranged between the lower slider 103 and the upper slider 109, the first driving spring 118 is fixed between an extending pipe at the upper end of the upper slider 109 and the shell through a semicircular groove at the two ends of the inner wall of the clamping seat 108, the third upper roller 112 and the fourth upper roller 113 are installed in a sliding groove at the upper part of the clamping seat 108, the first upper roller 110 and the second upper roller 111 are installed in a sliding groove at the middle part of the clamping seat 108, the first separating nut 114 and the second separating nut 115 are installed between the clamping seat 108, and the first upper roller 110, the third upper roller 112 and the fourth upper roller 111 are respectively matched with the first separating nut 115 and the second separating nut 115. The screw 121 passes through a through hole at the bottom of the compression rod 200, is fixedly connected through the clamp 120, is in threaded fit with the first separation nut 114 and the second separation nut 115, and the auxiliary separation frustum 116 is arranged in a limiting groove in the middle of the clamping seat 108, and is provided with the disc spring 117.
As shown in fig. 12, a pre-tightening mechanism 500 in the invention mainly comprises a compression head 501, a pre-tightening pressure head 502, a spring sleeve 503, a spring 504, a balance plate 505 and a nut 506, wherein the lower end of the compression head 501 is a conical boss, the upper end of the compression head is fixed under the pre-tightening pressure head 502 through a screw, the conical boss is matched with a bearing post 402 through a compression rod 200 passing through holes at two ends, the spring sleeve 503 is fixed with the pre-tightening pressure head 502 through a screw thread, the spring 504 is installed in the spring sleeve 503, the balance plate 505 is installed in the spring sleeve 503 and passes through the compression rod 200, and the nut 506 is locked with the screw thread of the compression rod 200 through the screw thread.
13-14, the push rod mechanism 300 of the present invention mainly comprises a push rod base 301, a push rod housing 302, a push rod spring 303, a ball 304, an end cover 305, and a push rod 306, wherein the push rod base 301 is fixedly installed on the inner end surface of the reinforcing ring of the push rod 200 through a screw, the push rod 306 stretches through a through hole on the push rod housing 302, the push rod spring 303 is fixed between a boss at the rear end of the push rod 306 and a boss at the upper end of the push rod base 301, the ball 304 is installed in a spherical groove at the front end of the push rod 306, the axial movement is constrained through the threaded cooperation between the end cover 305 and the push rod 306, and the push rod housing 302 is fixed on the push rod base through the screw.
The working process of the low-impact large-bearing stack type multi-star locking and releasing mechanism comprises the following two stages:
1) Stacking satellite locking stage: when the locking release mechanism 100 is in a locking state, the lower sliding block 103 is locked by limiting axial movement under the action of the reset spring 107, the upper sliding block 109 is locked by extruding the first lower roller 104 and the second lower roller 105 under the action of the first driving spring 118, radial force is generated on the lower sliding block 103 by the extruded first lower roller 104 and the extruded second lower roller 105, the axial movement of the upper sliding block 109 is limited to lock, the first separating nut 114 and the second separating nut 115 are locked by extruding radial force generated by the first upper roller 110, the second upper roller 111, the third upper roller 112 and the fourth upper roller 113 through the upper sliding block 109, the split assisting cone 116 is extruded by the first separating nut 114 and the second separating nut 115, the disc spring 117 is compressed downwards, the screw 121 is locked by the threaded connection under the locking state of the first separating nut 114 and the second separating nut 115, the lower end of the compression rod 200 is fixed by the screw 121 and the clamp 120, the upper end of the pre-tightening mechanism 500 is connected with the pre-tightening mechanism 500, the pre-tightening nut 506 enables the balance plate 505 to downwards extrude the spring 503, and then the spring 504 elasticity is transmitted with the compression head 501, the compression head is tightly pressed by the compression head, the compression head is tightly contacted with the compression head 306 by the pre-tightening rod 200, and the compression head 306 is tightly compressed by the compression rod 300, and the compression head is tightly held by the compression rod 306, and the compression rod is tightly held by the compression rod is in a small compression mechanism.
2) Stacking satellite unlocking stage: when the locking release mechanism 100 is in a release state, the memory alloy wire 106 is electrified and heated to generate shrinkage deformation, the lower slide block 103 is driven to move upwards, the first lower roller 104 and the second lower roller 105 are extruded by the upper slide block 109 to generate radial movement when the lower slide block 103 moves upwards, the first lower roller 104 and the second lower roller 105 slide into the circular groove of the lower slide block 103, the axial constraint of the upper slide block 109 is relieved, the upper slide block 109 moves downwards under the action of the first driving spring 118, the first upper roller 110, the second upper roller 111, the third upper roller 112 and the fourth upper roller 113 generate radial movement under the action of the first separation nut 114 and the second separation nut 115, the first separation nut 114 and the second separation nut 115 move into the semicircular groove on the inner wall of the upper slide block 109, the radial constraint of the first separation nut 114 and the second separation nut 115 is relieved, the separation unlocking action is completed through the interaction of the conical boss on the auxiliary separation cone 116 and the clamping seat 108, the screw 121 drives the clamp 120 and the compression rod 200 to separate upwards together to complete unlocking release under the action of the second driving spring 119, the compression rod 200 is separated, the compression rod push rod mechanism 300 pushes the release rod mechanism 306 to move axially, and the reset rod 304 moves axially to the ball rod 304 to complete the whole separation process.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and improvements can be made without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the invention and the practical applicability of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (9)
1. A low-impact large-bearing stack type multi-satellite locking and releasing device is used for locking and releasing a satellite assembly formed by stacking a plurality of satellite bodies (401) layer by layer; the method is characterized in that: comprises a stacked satellite bottom plate (1), a locking and releasing mechanism (100), a pressing rod (200) and a satellite body (400); the satellite body (400) comprises bearing columns (402) arranged on the side surfaces of the satellite bodies (401), and when the satellite assembly is arranged on the stacked satellite base plate (1), the bearing columns (402) of the satellite bodies (401) are connected together; the two compression rods (200) are arranged on two sides of the connected bearing column (402) and apply pressure along the axis direction of the satellite assembly for locking the satellite assembly, and a locking release mechanism (100) is arranged between the compression rods (200) and the stacked satellite base plate (1);
the locking and releasing mechanism (100) comprises a shell (101), a lower slide block supporting seat (102), a lower slide block (103), a memory alloy wire (106), a reset spring (107), a clamping seat (108), an upper slide block (109), a first separation nut (114), a second separation nut (115), a second driving spring (119), a clamp (120) and a screw (121); the shell (101), the lower slide block supporting seat (102) and the clamping seat (108) are fixedly connected with the stacked satellite base plate (1); the lower slide block supporting seat (102) is arranged at the bottom of the inner cavity of the shell (101), and the clamping seat (108) is arranged in the middle of the inner cavity of the shell (101); the lower slide block (103) is arranged in the lower slide block supporting seat (102) and can complete the releasing and locking actions by moving up and down along the axis; the memory alloy wire (106) passes through the U-shaped inner groove of the lower slider (103), and two ends of the memory alloy wire are fixed on the clamping seat (108); the reset spring (107) is fixed between a boss of the lower sliding block (103) and a limit groove of the clamping seat (108); when the lock is unlocked, the memory alloy wire (106) is contracted by electrifying, and the lower slider (103) is pulled to move upwards against the pressing force of the reset spring (107); the upper part of the lower sliding block (103) extends into the inner cavity of the upper sliding block (109) and can slide along the inner cavity of the upper sliding block, the upper sliding block (109) is connected with the lower sliding block (103) through a first release structure, the top end surface of the upper sliding block (109) is connected with the top wall of the inner cavity of the shell (101) through a second driving spring (119), and the upper sliding block (109) is limited with the clamping seat (108) through a step surface; the screw (121) penetrates through the inner cavity of the shell (101) from the top end opening of the shell and penetrates through the clamping seat (108), a threaded section of the screw (121) positioned in the shell (101) is in threaded connection with a first separating nut (114) and a second separating nut (115) which are combined together at two sides of the threaded section, the first separating nut (114) and the second separating nut (115) are limited by the clamping seat (108) to axially displace, and the bottom end of the screw (121) is abutted against the clamping seat (108); the first separation nut (114), the second separation nut (115) and the inner wall of the upper sliding block (109) are connected through a second release structure; a section of the screw (121) positioned outside the shell (101) is connected with the compression rod (200) through a connecting mechanism and used for locking and releasing the compression rod (200).
2. The low impact large load stack multi-star lock release of claim 1 wherein: the connecting mechanism is characterized in that a clamp (120) is arranged at a position, above the shell (101), of a screw (121), and a first driving spring (118) is arranged between the lower end face of the clamp (120) and the upper end face of the shell (101); the pressing rod (200) is provided with a lateral boss near the bottom end, the boss is provided with a through hole, a screw (121) penetrates through the through hole when being installed, after the clamp is installed, the clamp (120) and the screw (121) are utilized between two fixed end surfaces, and the boss on the pressing rod (200) is released under the action of a first driving spring (118).
3. The low impact large load stack multi-star lock release of claim 2 wherein: the first release structure comprises a first lower roller (104) and a second lower roller (105), the first lower roller and the second lower roller are symmetrically arranged in a sliding groove between the lower slider (103) and the upper slider (109), the upper slider (109) is mutually matched and arranged through a semicircular boss in the middle of two end faces and semicircular grooves at two ends of the inner wall of the clamping seat (108), the semicircular grooves are used for limiting radial movement of the upper slider (109), and an arc-shaped groove at the lower end of the upper slider (109) is mutually matched with the first lower roller (104) and the second lower roller (105) and is used for limiting axial movement of the upper slider (109); when the lower slider (103) moves upwards, the first lower roller (104) and the second lower roller (105) roll inwards into a converging section in a sliding groove of the lower slider (103), and the upper slider (109) is unlocked and slides downwards.
4. A low impact large load stack multi-star lock release as claimed in claim 2 or 3, wherein: the second release structure comprises a first upper roller (110), a second upper roller (111), a third upper roller (112) and a fourth upper roller (113); the third upper roller (112) and the fourth upper roller (113) are arranged in the sliding groove at the upper part of the clamping seat (108); the first upper roller (110) and the second upper roller (111) are arranged in the middle sliding groove of the clamping seat (108), and the four upper rollers are contacted with the inner wall surface of the upper sliding block (109); the first upper roller (110) and the third upper roller (112) are matched with a groove on the outer wall surface of the first separation nut (114) and are used for limiting the radial movement of the first separation nut (114); the second upper roller (111) and the fourth upper roller (113) are matched with a groove on the outer wall surface of the second separation nut (115) and are used for limiting radial movement of the second separation nut (115); when the upper sliding block (109) slides downwards, the four upper rollers fall into grooves correspondingly formed in the inner wall surface of the upper sliding block (109), the first separating nut (114) and the second separating nut (115) are separated in the radial direction, the first separating nut and the second separating nut are not meshed with the threaded section of the screw (121), and the screw (121) is unlocked in the axial direction under the action of the first driving spring (118).
5. The low impact, high load stack multi-star lock release of claim 4 wherein: a splitting aid frustum (116) is further arranged between the screw (121) and the clamping seat (108), and the splitting aid frustum (116) is arranged in a limiting groove in the middle of the clamping seat (108) through a disc spring (117); the outer cone surface of the auxiliary separation cone table (116) is matched with the inner cone surface at the bottom end of the first separation nut (114) and the second separation nut (115).
6. A low impact, large load stack multi-star lock release as claimed in claim 1, 2 or 3, wherein: the top end of the pressing rod (200) is also provided with a pre-tightening mechanism (500) for tightening the satellite assembly to ensure stability; the pre-tightening mechanism (500) comprises a pressing head (501), a pre-tightening pressure head (502), a spring sleeve (503), a third spring (504), a balance plate (505) and a nut (506); the lower end of the compression head (501) is a conical boss, the upper end of the compression head is fixed under the pre-tightening pressure head (502), and the conical boss is matched with the bearing column (402) by respectively penetrating through a compression rod (200) through the through holes at the left side and the right side; the two spring sleeves (503) are respectively installed in the installation holes on two sides of the pre-tightening pressure head (502) and are fixedly connected with the pre-tightening pressure head (502), the third spring (504) is installed in the spring sleeve (503), two insertion pipes corresponding to the installation holes of the pre-tightening pressure head (502) are arranged on the balance plate (505), the compression rod (200) penetrates through the spring sleeve (503) and the insertion pipes, and the top end of the compression rod (200) is locked with the screw thread of the compression rod (200) through the nut (506).
7. A low impact, large load stack multi-star lock release as claimed in claim 1, 2 or 3, wherein: a compression rod reinforcing ring (201) is bridged between the two compression rods (200), and a compression rod push rod mechanism (300) is arranged on the inner end surface of the compression rod reinforcing ring (201) and used for completing the outward separation action of the compression rods (200); the pressing rod push rod mechanism (300) comprises a push rod base (301), a push rod shell (302), a push rod spring (303), balls (304), an end cover (305) and a push rod (306); the push rod base (301) is fixedly arranged on the inner end face of the specified compression rod reinforcing ring (201); the push rod shell (302) is fixed on the push rod base, and the push rod (306) passes through a through hole on the push rod shell (302) to perform telescopic movement; the push rod spring (303) is fixed between a boss at the rear end of the push rod (306) and a boss at the upper end of the push rod base (301); the ball (304) is arranged in a spherical groove at the front end of the push rod (306), and the axial movement is restrained by the threaded fit between the end cover (305) and the push rod (306).
8. A low impact, large load stack multi-star lock release as claimed in claim 1, 2 or 3, wherein: the star body (401) adopts a flat plate structure, a single layer adopts two star bodies (401) to be parallel, the bearing columns (402) adopt a male-female head form, the lower end of the upper end groove is provided with a boss, each star body (401) adopts three bearing columns (402) to form a triangle stable stress form, and the bearing columns (402) at the juncture of the two star bodies (401) are combined in an upper section and a lower section.
9. A method of operating a low impact large load stack multi-star lock release as defined in claim 7, comprising the steps of:
step 1, locking process: when the locking release mechanism (100) is in a locking state, the lower sliding block (103) is under the action of the reset spring (107) to limit the axial movement for locking; the upper sliding block (109) is locked by extruding the first lower roller (104) and the second lower roller (105) under the action of the first driving spring (118), and the extruded first lower roller (104) and the extruded second lower roller (105) generate radial force on the lower sliding block (103) to limit the axial movement of the upper sliding block (109); the first separating nut (114) and the second separating nut (115) are locked by radial force generated by the fact that the upper sliding block (109) extrudes the first upper roller (110), the second upper roller (111), the third upper roller (112) and the fourth upper roller (113); the screw (121) is locked by threaded connection in a locking state of the first separation nut (114) and the second separation nut (115);
step 2 release process: when the locking and releasing mechanism (100) is released, the memory alloy wire (106) is electrified and heated to generate shrinkage deformation, so that the lower sliding block (103) is driven to move upwards; when the lower slide block (103) moves upwards, the first lower roller (104) and the second lower roller (105) are extruded by the upper slide block (109) to generate radial movement, slide into a convergence section of a circular groove of the lower slide block (103), and release the axial constraint of the upper slide block (109); the upper sliding block (109) moves downwards under the action of a first driving spring (118); the first upper roller (110), the second upper roller (111), the third upper roller (112) and the fourth upper roller (113) generate radial movement under the acting force of the first separation nut (114) and the second separation nut (115), and move into the semicircular groove on the inner wall of the upper sliding block (109), so that the radial constraint on the first separation nut (114) and the second separation nut (115) is released; the first separation nut (114) and the second separation nut (115) interact with each other through a conical boss on the separation-assisting conical table (116) and the clamping seat (108) to finish the separation unlocking action; the screw (121) drives the clamp (120) and the compression rod (200) to move upwards together and separate under the action of the second driving spring (119) so as to finish unlocking release;
step 3, push rod process: when the pressing rod push rod mechanism (300) is locked, the push rod (306) is retracted to enable the push rod spring (303) to be in a compressed state, and the ball (304) fixed at the end part of the push rod (306) is tightly contacted with the bearing column (402); when the pressing rod pushing rod mechanism (300) is released, the pressing rod (200) is unlocked and separated, and the spring (303) is reset to push the pushing rod (306) and the ball (304) to axially move, so that the outward movement of the pressing rod (200) is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111287462.2A CN114132534B (en) | 2021-11-02 | 2021-11-02 | Low-impact large-bearing stack type multi-star locking and releasing mechanism and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111287462.2A CN114132534B (en) | 2021-11-02 | 2021-11-02 | Low-impact large-bearing stack type multi-star locking and releasing mechanism and working method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114132534A CN114132534A (en) | 2022-03-04 |
| CN114132534B true CN114132534B (en) | 2024-03-29 |
Family
ID=80392027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111287462.2A Active CN114132534B (en) | 2021-11-02 | 2021-11-02 | Low-impact large-bearing stack type multi-star locking and releasing mechanism and working method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114132534B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114802824B (en) * | 2022-04-14 | 2024-06-28 | 北京微分航宇科技有限公司 | Stacked compression release device |
| CN114802825B (en) * | 2022-05-05 | 2024-08-27 | 哈尔滨工业大学 | Multi-star compressing and separating device capable of achieving centralized compressing and controllable separating |
| CN115158701B (en) * | 2022-07-22 | 2025-03-07 | 航天东方红卫星有限公司 | A stacked satellite rocket compression release mechanism |
| CN115057012B (en) * | 2022-08-03 | 2022-10-25 | 北京劢亚科技有限公司 | Multi-satellite chain type launching, locking, unlocking and ejecting mechanism |
| CN115009549B (en) * | 2022-08-09 | 2022-11-18 | 北京星河动力装备科技有限公司 | Locking and releasing mechanism, control method thereof and carrier rocket |
| CN115231004B (en) * | 2022-09-20 | 2023-01-24 | 北京宇航系统工程研究所 | Connection and separation mechanism for stacked satellites |
| CN115783314B (en) * | 2022-11-21 | 2024-04-26 | 北京中科宇航技术有限公司 | Multi-flat-plate stacked satellite unlocking system |
| CN115675938B (en) * | 2022-11-21 | 2024-04-26 | 北京中科宇航技术有限公司 | Low-orbit mobile stack constellation satellite unlocking distributor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6137171A (en) * | 1997-10-27 | 2000-10-24 | Discovery Semiconductors, Inc. | Lightweight miniaturized integrated microsatellite employing advanced semiconductor processing and packaging technology |
| CN103738509A (en) * | 2014-01-21 | 2014-04-23 | 北京航空航天大学 | Novel multi-satellite separating, unlocking and releasing device |
| CN107839904A (en) * | 2017-09-27 | 2018-03-27 | 北京空间飞行器总体设计部 | A kind of skin Nano satellite track disposes device |
| CN111284731A (en) * | 2020-01-16 | 2020-06-16 | 清华大学 | Electromagnetic locking and releasing mechanism for star-rocket separation and electromagnetic locking and releasing method |
| CN112027121A (en) * | 2020-08-28 | 2020-12-04 | 上海宇航系统工程研究所 | Tensioning type star-arrow connecting and unlocking mechanism |
| CN112193441A (en) * | 2020-09-29 | 2021-01-08 | 哈尔滨工业大学 | A multi-satellite locking ejection mechanism in space |
| CN112373734A (en) * | 2020-11-24 | 2021-02-19 | 东方红卫星移动通信有限公司 | Low-orbit satellite group emission satellite-arrow separation unlocking module and satellite-arrow separation method |
| CN214383418U (en) * | 2020-07-20 | 2021-10-12 | 北京九天微星科技发展有限公司 | Stacked satellite assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9718566B2 (en) * | 2015-04-30 | 2017-08-01 | Worldvu Satellites Limited | Stackable satellites and method of stacking same |
-
2021
- 2021-11-02 CN CN202111287462.2A patent/CN114132534B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6137171A (en) * | 1997-10-27 | 2000-10-24 | Discovery Semiconductors, Inc. | Lightweight miniaturized integrated microsatellite employing advanced semiconductor processing and packaging technology |
| CN103738509A (en) * | 2014-01-21 | 2014-04-23 | 北京航空航天大学 | Novel multi-satellite separating, unlocking and releasing device |
| CN107839904A (en) * | 2017-09-27 | 2018-03-27 | 北京空间飞行器总体设计部 | A kind of skin Nano satellite track disposes device |
| CN111284731A (en) * | 2020-01-16 | 2020-06-16 | 清华大学 | Electromagnetic locking and releasing mechanism for star-rocket separation and electromagnetic locking and releasing method |
| CN214383418U (en) * | 2020-07-20 | 2021-10-12 | 北京九天微星科技发展有限公司 | Stacked satellite assembly |
| CN112027121A (en) * | 2020-08-28 | 2020-12-04 | 上海宇航系统工程研究所 | Tensioning type star-arrow connecting and unlocking mechanism |
| CN112193441A (en) * | 2020-09-29 | 2021-01-08 | 哈尔滨工业大学 | A multi-satellite locking ejection mechanism in space |
| CN112373734A (en) * | 2020-11-24 | 2021-02-19 | 东方红卫星移动通信有限公司 | Low-orbit satellite group emission satellite-arrow separation unlocking module and satellite-arrow separation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114132534A (en) | 2022-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114132534B (en) | Low-impact large-bearing stack type multi-star locking and releasing mechanism and working method thereof | |
| CN109383850A (en) | A kind of non-firer's driver divides valve nut type tripper | |
| CN102910299B (en) | Connecting and unlocking mechanism driven by SMA (Shape Memory Alloy) wire | |
| CN113665844B (en) | Satellite and rocket unlocking device for separating stacked satellites from carrying satellites | |
| CN112193441B (en) | Multi-satellite locking ejection mechanism in space | |
| CN201128483Y (en) | Folding rigid and semi-rigid solar wing secondary compression release mechanism | |
| CN110239746B (en) | Hexagonal microsatellite separating and unlocking device | |
| CN112373734B (en) | Low-orbit satellite group emission satellite-arrow separation unlocking module and satellite-arrow separation method | |
| CN113581499B (en) | Heap satellite linkage unblock separator | |
| CN110712771B (en) | Non-initiating explosive device fusing connection and separation device | |
| CN105923170A (en) | Repeatable folding and unfolding truss structure and cell element thereof | |
| CN110949693A (en) | Pneumatic type connecting and unlocking device | |
| CN115610712A (en) | Non-firer separating mechanism suitable for stacked satellites | |
| CN109307032A (en) | A reusable passive energy-absorbing pull/compression two-way buffer | |
| CN107792403B (en) | Satellite separation device | |
| CN114802825B (en) | Multi-star compressing and separating device capable of achieving centralized compressing and controllable separating | |
| CN111332503B (en) | Passive in-orbit docking device for space antenna module | |
| CN112455729B (en) | Rope linkage type multi-point pressing synchronous unlocking device | |
| CN108692621B (en) | Band connecting and unlocking device | |
| CN114455107B (en) | Non-firer separating device based on SMA connecting piece switch | |
| CN115230989A (en) | Stack type one-arrow-multi-satellite launching system | |
| WO2024060313A1 (en) | Sma-wire-driven reusable release mechanism with self-resetting function | |
| CN221498457U (en) | Compression release separation mechanism applied to staggered stacking plate satellite | |
| CN220357725U (en) | Multi-stage water rocket separating device capable of being conveniently inflated | |
| CN221525268U (en) | Orderly-released unlocking device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |