A stacked satellite rocket compression release mechanism

Abstract

The present invention provides a stacked satellite rocket clamping and releasing mechanism, including: a clamping mechanism, a base, a transfer mechanism, a thrust mechanism and an unlocking mechanism. The unlocking mechanism includes: a plurality of flexible strips and an unlocker. The installation body of the release device is the base, and a plurality of stacked satellites are neatly stacked and placed on the base. At least two sets of the release devices provided by the present invention are symmetrically arranged around the stacked satellite. The larger clamping force required by the clamping mechanism is provided by the smaller pulling force of the flexible strips of the transfer mechanism through the force amplification of the transfer mechanism. The impact between the impact power source and the clamped target is buffered by multiple places such as the flexible strips, the transfer mechanism, and the clamping mechanism. One unlocker can be used to unlock multiple clamping mechanisms, and there is no need to set an unlocker at each clamping mechanism. The release device provided by the present invention has a small spatial envelope, low load-bearing requirements for the unlocker, small unlocking impact, and a small number of unlockers required, and can achieve the clamping and release of multiple targets stacked vertically.

Description

Technical Field

[0001] The present invention belongs to the technical field of aerospace satellites, and in particular relates to a releasing device for separating stacked satellites from rockets. Background Art

[0002] With the development of satellite technology, small satellites need to be deployed quickly when building multi-satellite constellation networks. Therefore, it is urgent to launch multiple satellites into orbit at one time by using a one-rocket-multiple-satellite launch technology. The one-rocket-multiple-satellite launch technology is of great significance for effectively meeting the needs of the booming small satellite constellation networks.

[0003] The layout methods used for launching multiple satellites with one rocket include external hanging type and stacking type. Chinese invention application CN112815788A provides a one-rocket multiple satellite separation system, in which the unlocking seat is connected to the carrier rocket through bolts, one end of the tension rod is connected to the unlocking seat, and the other end is fixedly connected to the clamping end cap, and the load-bearing columns of multiple intersatellite separation devices are connected and arranged between the clamping end cap and the unlocking seat in sequence from top to bottom. After the rocket sends the satellite to the specified position, the bolts on the unlocking seat are controlled to unlock, so that the tension rod and the clamping end cap lose tension. At this time, one end of the first elastic separation member is fixedly connected to the fixed seat and the other end is fixedly connected to the middle of the tension rod, which will drive the tension rod to rotate, so that the clamping end cap moves outward, which is convenient for multiple satellites to separate from the rocket; and because multiple second elastic separation members are fixedly installed at the bottom of multiple load-bearing columns one by one, after the pressure of the clamping end cap is lost, the second elastic separation member recovers under the action of elastic force, so that multiple satellites connected to multiple intersatellite separation devices are separated, completing the entire satellite launch and separation process. The bolts used in this invention are explosive bolts. The explosive bolts can be automatically blasted and removed under the control of the rocket to separate the unlocking seat from the rocket. The one-rocket-multiple-satellite separation system has the disadvantages of large unlocking impact and a large number of unlocking power sources. During the unlocking process of the rocket, the pyrotechnic explosion can easily cause a large impact on the satellite; the large number of unlocking power sources reduces reliability. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a release device which has a small unlocking impact force and a small unlocking power source during the unlocking process of a satellite and a rocket, can unlock all clamping mechanisms with one unlocking action, and has high efficiency and is not prone to failure.

[0005] The technical solution of the present invention is:

[0006] A stacked satellite rocket compression and release mechanism, comprising: a compression mechanism, a base, a transfer mechanism, a thrust mechanism and an unlocking mechanism;

[0007] Each satellite has m clamping mechanisms evenly distributed around its side wall, and the clamping mechanisms are used to stack n satellites to form a multi-layer structure;

[0008] The clamping mechanism is fixedly installed on the base through a transfer mechanism; the base is fixedly connected to the rocket adapter; an unlocking mechanism is provided at the bottom of the base; the unlocking mechanism is used to provide a radially inward preload so that the clamping mechanism constrains the movement of the satellite; after the unlocking mechanism is unlocked, the clamping mechanism moves outward with the cooperation of the thrust mechanism to release the constraint on the satellite; wherein n and m are positive integers.

[0009] Preferably, the clamping mechanism comprises: a fixed connection block and a clamping assembly;

[0010] Each satellite has m fixed connection blocks evenly distributed around its outer wall. The n fixed connection blocks at the same position in each layer are stacked axially through a concave-convex structure to form a multi-layer structure as a fixed connection block group. The number of layers of the fixed connection block group is the same as the number of satellites, and each layer corresponds to one satellite.

[0011] The top of the clamping assembly is connected to the top of the fixed connection block group, and the bottom of the clamping assembly is fixedly connected to the switching mechanism; the clamping assembly is used to axially fix the n fixed connection blocks in the fixed connection block group on the base.

[0012] Preferably, the clamping assembly comprises: a beam body, a bottom plate, a top plate and a cover plate;

[0013] The top of the beam body is fixedly connected to the top plate, and the cover plate and the top plate are connected by a threaded pair; the top plate is connected to the top of the fixed connection block group;

[0014] The bottom of the beam body is fixedly connected to the bottom plate; the bottom plate is fixedly connected to the transfer mechanism.

[0015] Preferably, a convex portion is processed on the bottom of the fixed connection block, and a concave portion is processed on the top of the fixed connection block; and the upper and lower adjacent fixed connection blocks are connected in sequence through the convex portion and the concave portion.

[0016] Preferably, the cover plate comprises: a column section and a flange;

[0017] The column section is connected to the top plate through threads, and the cover plate can move axially relative to the top plate, so that the flange plate presses the top of the fixed connection block group and axially fixes the fixed connection block group.

[0018] Preferably, a frustum is processed on the bottom of the flange as a clamping protrusion, and the clamping protrusion is plug-fitted with a recess processed on the top of the fixed connection block.

[0019] Preferably, a release interval is reserved between the bottom plate and the base, and the axial length of the release interval is greater than the axial insertion length between the pressing protrusions and the protrusions.

[0020] Preferably, a conical hole structure is processed on the top of the base as an interface portion, and the interface portion is matched and connected with the protrusion at the bottom of the fixed connection block group.

[0021] Preferably, the switching mechanism comprises: a support, a fixed support, a first connecting rod and a second connecting rod;

[0022] The support is fixedly arranged at the bottom of the base through a fixed support, one end of the first connecting rod is hinged to the support, and the other end is hinged to the bottom of the second connecting rod, and the top of the second connecting rod is fixedly connected to the bottom plate.

[0023] Preferably, the axis of the second connecting rod coincides with the axis of the interface portion corresponding to the base.

[0024] Preferably, the unlocking mechanism comprises: a flexible rope and an unlocker;

[0025] The unlocker is fixedly mounted at the bottom of the base; a plurality of flexible strips pass through the unlocker and are connected to the bottom of the second connecting rod; a cutter is arranged on the unlocker, and the flexible strips are cut by the cutter to release the lock.

[0026] Preferably, the flexible strips are arranged in radial direction.

[0027] Preferably, the thrust mechanism comprises: a first spring push rod;

[0028] A first spring push rod is arranged between the fixed support and the first connecting rod, or between the fixed support and the second connecting rod; the first spring push rod provides a radially outward elastic force to the second connecting rod through a spring.

[0029] Preferably, the thrust mechanism comprises: a second spring push rod;

[0030] A second spring push rod is arranged between the beam body and the fixed connection block, and the second spring push rod provides a radially outward elastic force to the beam body through a spring.

[0031] Preferably, the second spring push rod is arranged at an upper middle position of the beam body.

[0032] Compared with the prior art, the present invention has the following significant beneficial effects:

[0033] 1) The cross-sectional shape of the beam body and the fixed connection block of the clamping assembly of the present invention can be optimized according to the size and envelope of the clamped target. The release device of the present invention has a small spatial envelope and can make full use of the space for layout, thereby improving the effective utilization of the space.

[0034] 2) The larger clamping force required by the clamping mechanism of the present invention is provided by the smaller pulling force of the flexible rope of the unlocking mechanism through the adapter mechanism, so the release device of the present invention has low load requirements on the unlocker, and the unlocker does not need to release the larger clamping force.

[0035] 3) The unlocker of the present invention has a small load-bearing requirement and a small unlocking impact, and the impact transmission path between the impact power source and the clamped target includes multiple buffering mechanisms such as flexible strips, switching mechanisms, and clamping mechanisms, which effectively reduce the impact on the clamped target.

[0036] 4) The present invention can unlock multiple clamping mechanisms with one unlocker, and there is no need to set an unlocker at each clamping mechanism. Therefore, the release device of the present invention has a small number of unlockers and can unlock all clamping mechanisms with one unlocking action, which is highly efficient and not prone to malfunctions. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a three-dimensional schematic diagram of an embodiment of a release device of the present invention;

[0038] Figure 2 It is a three-dimensional schematic diagram of a fixed connection block group of an embodiment of a release device of the present invention;

[0039] Figure 3 It is a three-dimensional schematic diagram of a fixed connection block of an embodiment of a release device of the present invention;

[0040] Figure 4 A schematic structural diagram of a clamping assembly of an embodiment of a release device of the present invention;

[0041] Figure 5 A schematic structural diagram of a top plate of an embodiment of a release device of the present invention;

[0042] Figure 6 A schematic structural diagram of a switching mechanism of an embodiment of a release device of the present invention;

[0043] Figure 7 A schematic structural diagram of a first spring push rod of an embodiment of a release device of the present invention;

[0044] Figure 8 A schematic structural diagram of an unlocker of an embodiment of a release device of the present invention;

[0045] Fig. 9 It is a partial structural schematic diagram of a pressing assembly and a second spring push rod of an embodiment of a release device of the present invention;

[0046] Fig.10 It is a schematic structural diagram of a second spring push rod of an embodiment of a release device of the present invention;

[0047] Fig.11 It is a schematic structural diagram of another embodiment of the release device of the present invention.

[0048] Figure numbers: 1-clamping mechanism; 11-fixed connection block; 111-connecting seat; 11a-recess; 11b-convex portion; 12-clamping assembly; 121-beam body; 122-bottom plate; 123-top plate; 123a-clamping convex portion; 124-first stud; 125-first back-tightening nut; 126-second stud; 127-second back-tightening nut; 2-base; 2a-interface; 3-adapter mechanism; 31- Support; 32-fixed support; 33-first connecting rod; 34-second connecting rod; 4-thrust mechanism; 41-first spring push rod; 411-first spring; 412-first push rod; 413-first shell; 414-first back cover; 42-second spring push rod; 421-second spring; 422-second push rod; 423-second shell; 424-second back cover; 5-unlocking mechanism; 51-flexible rope; 52-unlocker. DETAILED DESCRIPTION

[0049] The release device provided by the present invention is used to connect a launch vehicle and multiple stacked satellites, and to connect and disconnect multiple stacked satellites from a launch vehicle, and release the satellites into space orbit. The installation body of the release device of the present invention is a base 2, and multiple stacked satellites are neatly stacked on the base, and at least two sets of the release devices provided by the present invention are symmetrically arranged around the stacked satellites. The release device provided by the present invention has a small spatial envelope, low unlocker load requirements, small unlocking impact, and a small number of unlockers required, and can achieve the compression and release of multiple targets stacked vertically.

[0050] The release device of the present invention comprises: a pressing mechanism 1, a base 2, a switching mechanism 3, a thrust mechanism 4 and an unlocking mechanism 5. n satellites are stacked and placed, m release devices are evenly distributed in the circumferential direction, and n and m are positive integers.

[0051] Each satellite has m clamping mechanisms 1 evenly distributed around its side wall, which are fixedly mounted on the base 2 via a transfer mechanism 3. The base 2 is fixedly connected to a rocket adapter. An unlocking mechanism 5 is provided at the bottom of the base 2. The unlocking mechanism 5 is used to provide a radially inward preload so that the clamping mechanism 1 can restrict the movement of the satellite. After the unlocking mechanism 5 is unlocked, the clamping mechanism 1 moves outward with the cooperation of the thrust mechanism 4 to release the constraint on the satellite. The height of the fixed connection block 11 ranges from 150mm to 250mm. There are m transfer mechanisms 3 evenly distributed around the base 2.

[0052] The clamping mechanism 1 includes: n fixed connection blocks 11 and a clamping assembly 12. The outer wall of each satellite is evenly distributed with m fixed connection blocks 11, and the switching mechanism 3 and the unlocking mechanism 5 are fixed on the base 2. Figure 2As shown, n fixed connection blocks 11 at the same position of each layer are stacked axially through a concave-convex structure to form a multi-layer structure as a fixed connection block group, and multiple sets of fixed connection block groups can be distributed around the stacked multi-target assembly. The number of layers of the fixed connection block group is the same as the number of satellites, and each layer corresponds to one satellite.

[0053] like Figure 4 and Figure 5 As shown, the clamping assembly 12 includes: a beam body 121, a bottom plate 122, a top plate 123 and a cover plate 128. The bottom plate 122 is fixedly installed at the bottom of the beam body 121, and the top plate 123 is fixedly installed at the top of the beam body 121; the cover plate 128 includes: a column section and a flange; the column section is connected to the top plate 123 by threads, and the cover plate 128 can move axially relative to the top plate 123, so that the flange presses the top of the fixed connection block group and axially fixes the fixed connection block group. The beam body 121 has an inner contour that matches the outer shape of the fixed connection block 11. There is no contact between the beam body 121 and the fixed connection block 11, and a release spacing is left between the bottom plate 122 and the base 2, and the two do not contact each other. The bottom surface of the flange is processed with a frustum as a clamping protrusion 123a.

[0054] like Figure 5 As shown, the first through hole and the second through hole are respectively provided at both ends of the cover plate 128 of the beam body 121, and the first threaded hole and the second threaded hole are provided at corresponding positions on the upper surface of the beam body 121. The clamping assembly 12 also includes: a first stud 124, a first back-tightening nut 125, a second stud 126, and a second back-tightening nut 127. The lower thread of the first stud 124 is fixedly screwed into the first threaded hole, the middle smooth cylindrical surface of the first stud 124 passes through the first through hole of the cover plate 128, and the first back-tightening nut 125 is screwed onto the upper thread of the first stud 124. The lower part of the second stud 126 is fixedly screwed into the second threaded hole, the middle smooth cylindrical surface of the second stud 126 passes through the second through hole of the cover plate 128, and the second back-tightening nut 127 is screwed onto the upper thread of the second stud 126.

[0055] The upper surface of the base 2 is provided with m circumferentially evenly distributed conical hole structures as the interface portion 2a, and the fixed connection block group formed by the fixed connection block 11 is clamped between the top plate 123 and the interface portion 2a of the base 2, and the upper surface of the base 2 is perpendicular to the outer wall.

[0056] The switching mechanism 3 comprises: a support 31, a fixed support 32, a first connecting rod 33, a second connecting rod 34, a first rotating shaft and a second rotating shaft. m switching mechanisms 3 are fixed on the base 2 and are evenly distributed in the circumferential direction.

[0057] The support 31 is fixed to the bottom of the base 2 via a fixed support 32 , wherein the side wall of the fixed support 32 is parallel to the outer wall of the base 2 .

[0058] One end of the first connecting rod 33 is hinged to the support 31, and the other end is hinged to the bottom of the second connecting rod 34, and the top of the second connecting rod 34 is fixedly connected to the bottom plate 122 by screws. The first connecting rod 33 is located between the fixed support 32 and the second connecting rod 34; wherein the axis of the second connecting rod 34 coincides with the axis of the corresponding interface portion 2a of the base 2 and is parallel to the outer wall of the base 2 and the side wall of the fixed support 32.

[0059] like Figure 6 As shown, the first rotating shaft is axially fixedly inserted in the first mounting through hole group at one end of the support 31 and the first connecting rod 33, and is hingedly connected to the support 31 and one end of the first connecting rod 33; the second rotating shaft is axially fixedly inserted in the second mounting through hole group at the other end of the first connecting rod 33 and the bottom of the second connecting rod 34, and is hingedly connected to the other end of the first connecting rod 33 and the bottom of the second connecting rod 34.

[0060] In the release device of this embodiment, the axes of the first rotating shaft and the second rotating shaft are parallel, and are respectively perpendicular to and intersect with the axes of the first connecting rod 33, and the axes of the second rotating shaft are perpendicular to and intersect with the axes of the second connecting rod 34. The precise position accuracy can ensure a precise force multiplication ratio. The first rotating shaft and the second rotating shaft are the rotation axes of the switching mechanism 3, and are used to realize the rotation and deployment action of the first connecting rod 33 and the second connecting rod 34.

[0061] like Figure 6 As shown, because the top of the second connecting rod 34 is vertically fixedly connected to the bottom plate 122 of the clamping assembly 12, the axis of the second connecting rod 34 is parallel to the generatrix of the beam body 121 of the clamping assembly 12, the first connecting rod 33 is hingedly connected between the support 31 and the second connecting rod 34, and the first connecting rod 33 is located between the fixed support 32 and the second connecting rod 34, and the axis of each second connecting rod 34 coincides with the axis of the corresponding interface portion 2a and is parallel to the side surface of the base 2. One end of the flexible strip 51 is fixedly connected to the bottom of the second connecting rod 34, and the second connecting rod 34 is fixedly connected to the flexible strip 51. A hole or eye bolt is directly set at the bottom of the second connecting rod 34. The specific connection method is not limited, and the technology known to those skilled in the art can be used.

[0062] The fixed connection block 11 is provided with a connection seat 111, and the connection seat 111 of the fixed connection block 11 is fixedly connected with the side wall of the satellite by threads. When n satellites are stacked, the lower surface of the upper fixed connection block 11 is stacked and contacted with the upper surface of the lower fixed connection block 11, and the n fixed connection blocks 11 form a column. The bottommost fixed connection block 11 of the columnar fixed connection block group is placed on the interface part 2a of the base 2 and is placed in contact with the interface part 2a. A clamping assembly 12 is provided outside the columnar fixed connection block group, such as Fig. 9As shown, the top plate 123 of the clamping assembly 12 is arranged in contact with the upper surface of the topmost fixed connection block 11 of the columnar fixed connection block group, and the bottom plate 122 of the clamping assembly 12 is fixedly connected to the top of the second connecting rod 34 of the adapter mechanism 3, thereby fixing the clamping assembly 12 to the adapter mechanism 3.

[0063] A release spacing is set between the upper surface of the bottom plate 122 and the lower surface of the base 2 at the corresponding position, and the release spacing is greater than the height of the protrusion 11b of the fixed connection block 11. A recess 11a is set on the top of the fixed connection block 11. By setting the release spacing between the bottom plate 122 and the base 2, it is ensured that after the unlocking mechanism 5 is unlocked, the beam body 121 can move upward and be lifted a certain distance so that the pressing protrusion 123a of the top plate 123 can leave the recess 11a of the fixed connection block 11 of the first layer, so as to ensure that the entire pressing assembly 12 is smoothly separated from the fixed connection block 11 group fixed on the satellite side wall.

[0064] The thrust mechanism 4 comprises: a first spring push rod 41 and a second spring push rod 42;

[0065] The first spring push rod 41 includes: a first spring 411, a first push rod 412, a first housing 413 and a first back cover 414; when the release device of the present embodiment is in a compressed state, the first spring 411 of the first spring push rod 41 is in a compressed state, wherein the first spring push rod 41 is fixedly disposed on the side wall of the fixed support 32, and the first push rod 412 is in contact with the first connecting rod 33 or the second connecting rod 34. The axes of the first spring 411 and the first push rod 412 are along the radial direction of the base 2.

[0066] like Figure 7 As shown, the first housing 413 is fixedly connected to the first rear cover 414 to form a box structure, the fixed end of the first spring 411 is fixedly arranged on the first rear cover 414, the fixed end of the first push rod 412 is fixedly connected to the free end of the first spring 411, and the free end of the first push rod 412 is inserted into the first opening provided on the first housing 413 and matched with the shape of the first push rod 412, wherein, when the release device of this embodiment is in a compressed state, the free end of the first push rod 412 is flush with the first opening and contacts with the first connecting rod 33 or the second connecting rod 34. The first rear cover 414 of the first spring push rod 41 is fixedly connected to the fixed support 32, and the fixed connection method can be a threaded connection.

[0067] like Fig. 9 and Fig.10As shown, the second spring push rod 42 is fixedly arranged at the upper part between the beam body 121 and the fixed connection block 11, and the second spring push rod 42 comprises: a second spring 421, a second push rod 422, a second housing 423 and a second rear cover 424. The second housing 423 is fixedly connected to the second rear cover 424 to form a box structure, one end of the second spring 421 is fixedly arranged on the second rear cover 424, the fixed end of the second push rod 422 is fixedly connected to the other end of the second spring 421, and the free end of the second push rod 422 is inserted into the second opening provided on the second housing 423 and matching the shape of the second push rod 422. The second rear cover 424 is fixedly installed on the beam body 121. In the initial state, the second spring 421 in the second spring push rod 42 is in a compressed state. When the release device of this embodiment is in a compressed state, the end face of the second push rod 422 contacts the inner contour surface of the beam body 121. When the clamping assembly 12 of this embodiment is separated from the base 2 and the fixed connection block group, the second spring 421 gives the clamping assembly 12 a second thrust, so that the clamping assembly 12 is separated from the satellite more effectively and quickly.

[0068] In another connection situation, the second rear cover 424 of the second spring push rod 42 is fixedly connected to the outer surface of a fixed connection block 11, and the fixed connection method can be a threaded connection. The second housing 423 is fixedly connected to the second rear cover 424 to form a box structure, one end of the second spring 421 is fixedly set on the second rear cover 424, the fixed end of the second push rod 422 is fixedly connected to the other end of the second spring 421, and the free end of the second push rod 422 is inserted into the second opening provided on the second housing 423 and matched with the shape of the second push rod 422, wherein, when the release device of this embodiment is in a compressed state, the free end of the second push rod 422 is flush with the end surface of the second opening and contacts with the inner contour surface of the beam body 121.

[0069] The unlocking mechanism 5 includes a flexible rope 51 and an unlocking device 52. Figure 1 and Figure 6 As shown, the two ends of the flexible strip 51 are respectively fixedly connected to the bottom of the second connecting rod 34 of the adapter mechanism 3 symmetrically fixedly arranged on the base 2, and the multiple flexible strips 51 are radially arranged and converge in the unlocker 52; or one end of the flexible strip 51 is fixedly connected to the bottom of the second connecting rod 34 of the adapter mechanism 3 symmetrically fixedly arranged on the base 2, and the multiple flexible strips 51 are radially arranged and the other end converges in the unlocker 52.

[0070] like Figure 1As shown, the release device provided in this embodiment is used to connect the launch vehicle and 15 stacked satellites, and to disconnect the 15 stacked satellites from the launch vehicle and release them into the space orbit. The installation body of the release device of this embodiment is the base 2, and the 15 stacked satellites are neatly stacked and placed on the base 2. Four sets of release devices provided in this embodiment are symmetrically arranged around the stacked satellites. The following takes the connection between one set of release devices and a satellite as an example to explain the structure and connection relationship of the release device.

[0071] like Figure 8 As shown, in the release device of this embodiment, the unlocker 52 unlocks the flexible strip 51 by cutting using a cutter, and the two ends of the flexible strip 51 are respectively fixedly connected to the other end of the second connecting rod 34 of the adapter mechanism 3 symmetrically arranged on the base 2, and the multiple flexible strips 51 are radially arranged and converge in the cutting hole of the unlocker 52.

[0072] like Figure 5 As shown, in this embodiment, a clamping force is generated by the relative movement between the cover plate 128 and the top plate 123 to clamp and fix the connecting block 11, thereby clamping and fixing the stacked satellite on the base 2. According to the principle of force balance, the tensioning force and the clamping force generated by the second connecting rod 34 on the clamping assembly 12 in the adapter mechanism 3 form a pair of balancing forces of equal magnitude and opposite direction. In the release device of this embodiment, during the assembly process, after the initial assembly is completed, when the clamping spacing is not reduced, the clamping force in the clamping mechanism 1 and the tensioning force in the adapter mechanism 3 are both zero, and then the clamping spacing is gradually reduced to generate a gradually increasing clamping force and tensioning force until the clamping force requirement for the stacked satellite is met.

[0073] It should be noted that, in this embodiment, the axis of the fixed connection block group should be coaxially arranged with the axis of the second connecting rod 34 to achieve a balance between the tension force and the compression force.

[0074] When the unlocker 52 releases the constraint on the flexible cable 51, the first spring push rod 41 gives an initial first thrust to the first link 33 or the second link 34, and the first link 33 and the second link 34 are deployed in a direction away from the base 2 with the first rotating shaft of the support 31 as a fixed fulcrum. As the angle between the first link 33 and the second link 34 gradually increases, the tension, tension and compression forces also dynamically decrease, and the top of the second link 34 drives the clamping assembly 12 to move away from the stacked satellite, realizing the separation of the clamping assembly 12 of this embodiment from the base 2 and the fixed connection block group. The stacked satellite as a whole is no longer controlled by the release device, and is separated from the base 2 and enters the space orbit.

[0075] In this embodiment, the cross section of the fixed connection block 11 is circular and has a hollow structure. In addition, the cross section of the fixed connection block 11 may also be rectangular or other shapes, and the structure may be hollow or solid. The specific cross-sectional shape and structure may be flexibly set according to the shape of the stacked satellite and the characteristics of the mechanical environment in which the stacked satellite is located. The cross section of the beam body 121 may be semicircular, C-shaped, or rectangular with one side open. The cross-sectional shape of the fixed connection block 11 should match the cross-sectional shape of the beam body 121.

[0076] like Figure 3 As shown, in this embodiment, a recess 11a is provided on the upper surface of the fixed connection block 11, and a protrusion 11b is provided on the lower surface, wherein the recess 11a and the protrusion 11b have equal heights, and the interface portion 2a and the protrusion 11b have matching shapes and equal heights.

[0077] In this embodiment, a concave portion 11a is provided on the upper surface of the fixed connection block 11, and a convex portion 11b is provided on the lower surface. When multiple fixed connection blocks 11 are stacked into a columnar shape, the convex portion 11b of the fixed connection block 11 of the upper layer will be embedded in the concave portion 11a of the fixed connection block 11 of the lower layer, and a certain position constraint can be formed between two adjacent fixed connection blocks 11, and the connection is more secure when pressed by a clamping force. Correspondingly, a concave structure matching the shape of the convex portion 11b of the fixed connection block 11 is also provided at the interface portion 2a of the base 2, and a clamping convex portion 123a matching the shape of the concave portion 11a of the fixed connection block 11 is provided at the bottom of the top plate 123, so as to form an effective position constraint on the fixed connection block 11 of the bottom layer and the fixed connection block 11 of the first layer.

[0078] In this embodiment, a plurality of fixed connection blocks 11 are stacked on each other and clamped between the top plate 123 and the base 2. The positions where the plurality of fixed connection blocks 11, the clamping protrusions 123a of the top plate 123 and the concave structures of the base 2 fit together can be conical surfaces, plane surfaces, cylindrical surfaces or a combination of the above-mentioned surfaces.

[0079] In this embodiment, the unlocker 52 is fixedly mounted on the bottom of the base 2, and the unlocker 52 includes a pyrotechnic explosive bolt and a cutter.

[0080] The unlocker 52 is arranged at the center of the base 2, which can effectively constrain and release the flexible rope 51. Multiple flexible ropes 51 are connected to the bottom of the second connecting rod 34 in each switching mechanism 3, and all flexible ropes 51 are gathered to the unlocker 52. In the compressed state, multiple flexible ropes 51 are in a tensioned state. For the unlocker 52 whose internal cutter cuts the rope, the flexible rope 51 needs to pass through the hole between the cutter and the cutting board.

[0081] A plurality of flexible strips 51 are connected to the bottom of the second connecting rod 34 of each adapter mechanism 3, and all the flexible strips 51 are gathered to the unlocker 52. In the compressed state, the flexible strips 51 are in a tensioned state. When the unlocking command is issued, the unlocker 52 releases and cuts the flexible strips 51, so that the flexible strips 51 are relaxed, and the tension of the flexible strips 51 on the bottom of the adapter mechanism 3 and the tension between the adapter mechanism 3 and the clamping mechanism 1 are unloaded, and the clamping assembly 12 releases the axial constraint on the fixed connection block 11, and the clamping assembly 12 as a whole rotates around the first rotation axis of the adapter mechanism 3 and swings away from the fixed connection block 11 and the compressed target, and finally achieves release.

[0082] like Fig.11 As shown, according to another embodiment of the present invention, the angle range between the axis of the first connecting rod 33 and the axis of the second connecting rod 34 is 0.5°-2°. In the release device of this embodiment, the switching mechanism 3 can simultaneously realize the force-increasing function. Specifically, the pulling force of the flexible cable 51 on the bottom of the second connecting rod 34 and the tensioning force of the second connecting rod 34 on the clamping assembly 12 are proportional to each other in terms of force, and the proportional ratio is related to the angle between the first connecting rod 33 and the second connecting rod 34. The smaller the angle, the larger the proportional ratio, and the better the force-increasing effect; correspondingly, the larger the angle, the smaller the proportional ratio, and the less significant the force-increasing effect. Preferably, the angle range between the axis of the first connecting rod 33 and the axis of the second connecting rod 34 is 0.5°-2°, which can achieve a larger force-increasing ratio and meet the requirements of the clamping force between the stacked satellite and the base 2. In the conception of the present invention, the force-enhancing function of the adapter mechanism 3 is realized through the size and physical characteristics of the corresponding mechanical parts, and the force-enhancing method can be a lever force-enhancing structure, a cam force-enhancing structure, a gear force-enhancing structure, a worm gear force-enhancing structure, etc.

[0083] The rest of the configuration in this embodiment is the same as that in the first embodiment.

[0084] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solution of the present invention by using the above disclosed methods and technical contents without departing from the spirit and scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall belong to the protection scope of the technical solution of the present invention. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0085] The contents not described in detail in the specification of the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A stacked satellite rocket compression release mechanism, characterized in that: include: A clamping mechanism (1), a base (2), a switching mechanism (3), a thrust mechanism (4) and an unlocking mechanism (5); The side wall of each satellite is evenly distributed with m pressing mechanisms (1) in the circumferential direction, and the pressing mechanisms (1) are used to stack n satellites to form a multi-layer structure; The clamping mechanism (1) is fixedly mounted on the base (2) via a transfer mechanism (3); the base (2) is fixedly connected to a rocket adapter; an unlocking mechanism (5) is provided at the bottom of the base (2); the unlocking mechanism (5) is used to provide a pre-tightening force inward in the radial direction so that the clamping mechanism (1) constrains the movement of the satellite; after the unlocking mechanism (5) is unlocked, the clamping mechanism (1) moves outward with the cooperation of the thrust mechanism (4) to release the constraint on the satellite; wherein n and m are positive integers; The switching mechanism (3) comprises: a support (31), a fixed support (32), a first connecting rod (33) and a second connecting rod (34); The support (31) is fixedly arranged at the bottom of the base (2) through a fixed support (32); one end of the first connecting rod (33) is hinged to the support (31), and the other end is hinged to the bottom of the second connecting rod (34); the top of the second connecting rod (34) is fixedly connected to the bottom plate (122); the axis of the second connecting rod (34) coincides with the axis of the interface portion (2a) corresponding to the base (2); The unlocking mechanism (5) comprises: a flexible rope (51) and an unlocking device (52); The unlocker (52) is fixedly mounted on the bottom of the base (2); a plurality of flexible strips (51) pass through the unlocker (52) and are connected to the bottom of the second connecting rod (34); a cutter is provided on the unlocker (52), and the flexible strips (51) are cut by the cutter to release the lock; the flexible strips (51) are arranged radially; The thrust mechanism (4) comprises: a first spring push rod (41) and a second spring push rod (42); A first spring push rod (41) is provided between the fixed support (32) and the first connecting rod (33), or between the fixed support (32) and the second connecting rod (34); the first spring push rod (41) provides a radially outward elastic force to the second connecting rod (34) through a spring; A second spring push rod (42) is arranged between the beam body (121) and the fixed connection block (11), and the second spring push rod (42) provides a radially outward elastic force to the beam body (121) through a spring; the second spring push rod (42) is arranged at an upper position in the middle of the beam body (121).

2. A stacked satellite rocket compression and release mechanism according to claim 1, characterized in that: The clamping mechanism (1) comprises: a fixed connection block (11) and a clamping assembly (12); The outer wall of each satellite is uniformly distributed with m fixed connection blocks (11) in the circumferential direction, and n fixed connection blocks (11) at the same position in each layer are stacked axially through a concave-convex structure to form a multi-layer structure as a fixed connection block group, the number of layers of the fixed connection block group is the same as the number of satellites, and each layer corresponds to a satellite; The top of the clamping assembly (12) is connected to the top of the fixed connection block group, and the bottom of the clamping assembly (12) is fixedly connected to the switching mechanism (3); the clamping assembly (12) is used to axially fix the n fixed connection blocks (11) in the fixed connection block group on the base (2).

3. The stacked satellite rocket compression and release mechanism according to claim 2, characterized in that: The pressing assembly (12) comprises: a beam body (121), a bottom plate (122), a top plate (123) and a cover plate (128); The top of the beam body (121) is fixedly connected to the top plate (123), and the cover plate (128) and the top plate (123) are connected via a threaded pair; the top plate (123) is connected to the top of the fixed connection block group; The bottom of the beam body (121) is fixedly connected to the bottom plate (122); The bottom plate (122) is fixedly connected to the switching mechanism (3).

4. A stacked satellite rocket compression and release mechanism according to claim 3, characterized in that: A convex portion (11b) is processed on the bottom of the fixed connection block (11), and a concave portion (11a) is processed on the top of the fixed connection block (11); upper and lower adjacent fixed connection blocks (11) are connected in sequence via the convex portion (11b) and the concave portion (11a).

5. A stacked satellite rocket compression and release mechanism according to claim 4, characterized in that: The cover plate (128) comprises: a column section and a flange; The column section is connected to the top plate (123) by threads, and the cover plate (128) can move axially relative to the top plate (123), so that the top plate (123) presses the top of the fixed connection block group, thereby axially fixing the fixed connection block group.

6. A stacked satellite rocket compression and release mechanism according to claim 5, characterized in that: The bottom of the top plate (123) is processed with a truncated cone as a pressing convex portion (123a), and the pressing convex portion (123a) is plug-fitted with a concave portion (11a) processed on the top of the fixed connection block (11).

7. A stacked satellite rocket compression and release mechanism according to claim 6, characterized in that: A release spacing is reserved between the bottom plate (122) and the base (2), and the axial length of the release spacing is greater than the axial insertion length between the pressing convex portion (123a) and the convex portion (11b).

8. The stacked satellite rocket compression and release mechanism according to claim 4, characterized in that: The top of the base (2) is processed with a conical hole structure as an interface portion (2a), and the interface portion (2a) is matched and connected with a convex portion (11b) at the bottom of the fixed connection block group.

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