A satellite-rocket separation device with separation guidance and a satellite-rocket separation method

Abstract

The present invention relates to a satellite-rocket separation device with separation guidance and a satellite-rocket separation method. The satellite-rocket separation device with separation guidance includes a pin puller, a lock seat, a lock core cylinder, a separation spring, an unlocking push rod, a spring sleeve, a lock body, a lock block, a lock core spring, and a limit rod. The lock seat has an assembly cavity, and a pin puller is provided on the side wall of the assembly cavity; the lock core cylinder is installed at the upper end of the assembly cavity and is coaxially arranged with the assembly cavity. The spring sleeve is coaxially sleeved outside the unlocking push rod, and the lower end of the spring sleeve is connected to the lower end of the unlocking push rod. The unlocking push rod is coaxially sleeved inside the lower end of the lock core cylinder, and the spring sleeve is sleeved outside the lower end of the lock core cylinder; the separation spring is sleeved outside the spring sleeve, the lower end of the separation spring is connected to the lower end of the assembly cavity, and the upper end of the separation spring is connected to the upper end of the spring sleeve; the pin puller can stretch and retract along the radial direction of the assembly cavity to lock or unlock the spring sleeve; the lock body is adaptively installed in the lock core cylinder and can extend out from the upper end of the lock core cylinder, and a satellite connecting rod is provided at the upper end of the lock body.

Description

Technical Field

[0001] The present invention relates to the technical field of aerospace separation mechanisms, and particularly relates to a satellite-rocket separation device with separation guidance and a satellite-rocket separation method. Background Art

[0002] The satellite-rocket separation seat is used for the connection and separation of a satellite and a rocket. During the launch stage of the rocket and the satellite, the satellite and the rocket are connected through the separation seat. When the rocket reaches the predetermined orbit of the satellite, the satellite-rocket separation seat is powered and unlocked. Under the action of the separation spring inside the separation seat, the satellite is pushed out and enters the predetermined orbit. Multiple separation seats can be used simultaneously on one satellite. During the separation and pushing process of the separation seat, due to the difference in the spring forces of each separation seat, the satellite will more or less have a certain attitude swing after separation. In order to minimize the attitude swing angle of the satellite during separation, a separation guidance function needs to be added during separation. Summary of the Invention

[0003] The present invention provides a satellite-rocket separation device with separation guidance and a satellite-rocket separation method to solve one or several of the technical problems existing in the prior art.

[0004] A satellite-rocket separation device with separation guidance includes a pin puller, a lock seat, a lock core cylinder, a separation spring, an unlocking push rod, a spring sleeve, a lock body, a lock block, a lock core spring, and a limiting rod. The lock seat has an assembly cavity, and a pin pulling hole is formed on the side wall of the assembly cavity. The pin puller is installed in the pin pulling hole. The lock core cylinder is installed in the assembly hole at the upper end of the assembly cavity and is coaxially arranged with the assembly cavity. The spring sleeve is coaxially sleeved outside the unlocking push rod, and the lower end of the spring sleeve is connected to the lower end of the unlocking push rod. The unlocking push rod is coaxially sleeved inside the lower end of the lock core cylinder, and the spring sleeve is sleeved outside the lower end of the lock core cylinder. The separation spring is sleeved outside the spring sleeve, the lower end of the separation spring is connected to the lower end of the assembly cavity, and the upper end of the separation spring is connected to the upper end of the spring sleeve. The pin puller can axially expand and contract along the assembly cavity to lock or unlock the spring sleeve.

[0005] The lock body is adaptively installed in the lock core cylinder and can extend out from the upper end of the lock core cylinder. A satellite connecting rod is provided at the upper end of the lock body. A limiting groove is provided in the lock core cylinder. A lock cavity is provided inside the lock body. A limiting rod is provided in the lock cavity. The lower end of the limiting rod extends out from the lock cavity and abuts against the upper end of the unlocking push rod. The upper end of the limiting rod is elastically abutted against the lock cavity through a lock core spring. A lock block penetrating the side wall of the lock cavity is provided on the side wall of the lock body. A driving protrusion is provided on the limiting rod. The lock block can be pushed into the limiting groove by the driving protrusion under the action of the separation spring, and can also be pushed into the lock cavity on both sides of the driving protrusion by the groove wall of the limiting groove.

[0006] The beneficial effects of the present invention are as follows: For the satellite-arrow separation device with separation guidance of the present invention, by arranging the lock body inside the lock core cylinder, and installing the lock core cylinder at the upper end of the lock seat, the lock core cylinder and the lock body are limited or unlocked by the lock block. There is a cooperation relationship between the lock body and the lock core cylinder before separation, and the two can only move axially. Therefore, the lock body moves under guidance, avoiding the phenomenon of attitude swing of the satellite during the separation process.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Further, the limiting groove is annular and arranged along the circumferential direction of the lock core cylinder, and the limiting groove has a tapered structure with a smaller upper part and a larger lower part; one end of the lock block extending out of the lock cavity is provided with an inclined surface adapted to the side wall of the tapered structure.

[0009] The beneficial effect of adopting the above further solution is: By arranging the limiting groove with a tapered structure, it is convenient to drive the radial movement of the lock block.

[0010] Further, driving ramps are provided at both axial ends of the driving protrusion.

[0011] The beneficial effect of adopting the above further solution is: The setting of the driving ramps facilitates the movement of the lock block.

[0012] Further, the number of the driving protrusions, the limiting grooves and the lock blocks is two, and the two driving protrusions, the two limiting grooves and the two lock blocks can be arranged in one-to-one correspondence.

[0013] Further, a circular protrusion is provided on the outer peripheral side wall of the limiting rod, and spaces for accommodating the lock blocks are formed between the circular protrusion and an adjacent driving protrusion, and between two adjacent driving protrusions.

[0014] Further, a limiting edge is provided at one end of the lock block located inside the lock cavity. When the lock block extends out of the lock cavity, the limiting edge abuts against the inner side wall of the lock cavity.

[0015] The beneficial effect of adopting the above further solution is: The setting of the limiting edge prevents the lock block from disengaging from the lock cavity.

[0016] Further, the driving protrusion is an annular structure provided around the circumference of the limiting rod.

[0017] Further, it further includes a star connection plate; the satellite connecting rod includes a square section and a threaded section that are coaxially and integrally connected, and the square section is located between the lock body and the threaded section; an annular rib is provided on the upper end face of the lock seat, a limiting square hole adapted to the square section is provided at the center position of one side surface of the star connection plate, a limiting ring groove is further provided on one side surface of the star connection plate, and the annular rib is appropriately arranged in the limiting ring groove; the threaded section passes through the star connection plate and the star connection plate and the lock body are locked by a locking nut.

[0018] Further, a reset hole communicating with the lock cavity is provided in the middle of the satellite connecting rod, a reset thread groove is provided at one end of the limiting rod close to the reset hole, and the reset thread groove is coaxially arranged with the reset hole; the lock core spring is located between the reset thread groove and the reset hole.

[0019] The beneficial effect of adopting the above further scheme is that by providing the reset hole and the reset thread groove, the lock core spring can be reset to the compressed state by the reset bolt in the initial state.

[0020] A star - arrow separation method of a star - arrow separation device with separation guidance includes the following steps:

[0021] S1. In the initial state of the pull - pin device, the lock pin at the lower end extends out of the pull - pin hole and locks the spring sleeve to limit the axial movement of the spring sleeve. At this time, the separation spring is in a compressed state;

[0022] S2. In the working state of the pull - pin device, the lock pin at the lower end retracts to release the lock on the spring sleeve. Under the action of the separation spring, the spring sleeve drives the unlocking push rod to move axially, and at the same time, the unlocking push rod pushes the limiting rod to move axially along the lock core cylinder;

[0023] S3. After the limiting rod moves a certain distance, the lock block disengages from the limiting rod. Under the continuous action of the thrust of the separation spring, the unlocking push rod pushes the lock body to move axially. At this time, the limiting groove of the lock core cylinder in the lock seat presses the lock block to move radially along the lock body into the lock cavity, thereby releasing the limit between the lock body and the lock seat. Under the continuous push of the separation spring, the lock body is completely pushed out of the assembly cavity, so as to realize the complete separation of the lock body and the lock seat.

[0024] The beneficial effect of the present invention is that: in the star - arrow separation method of the present invention, the star - arrow separation process is stable and can effectively avoid the phenomenon of attitude swing of the satellite during the separation process. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the star - arrow separation device with separation guidance of the present invention in the initial state;

[0026] Figure 2 It is a three - dimensional structural diagram of the cooperation of the lock body, the lock block and the limiting rod of the present invention;

[0027] Figure 3 It is a schematic cross-sectional structure diagram inside the lock body of the present invention;

[0028] Figure 4 It is a schematic cross-sectional structure diagram of the cooperation between the inside of the lock base and the lock core cylinder of the present invention;

[0029] Figure 5 It is a schematic cross-sectional structure diagram of the lock core cylinder of the present invention;

[0030] Figure 6 It is a three-dimensional structure diagram of the star body connecting plate of the present invention;

[0031] Figure 7 It is a schematic cross-sectional structure diagram of the star body connecting plate of the present invention;

[0032] Figure 8 It is a schematic cross-sectional structure diagram of the star-arrow separation device with separation guidance in the working state of the present invention Figure One ;

[0033] Figure 9 It is a schematic cross-sectional structure diagram of the star-arrow separation device with separation guidance in the working state of the present invention Figure Two ;

[0034] Figure 10 It is a schematic cross-sectional structure diagram of the star-arrow separation device with separation guidance in the working state of the present invention Figure Three ;

[0035] Figure 11 It is a schematic cross-sectional structure diagram of the star-arrow separation device with separation guidance in the working state of the present invention Figure Four .

[0036] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0037] 1. Pin extractor;

[0038] 2. Lock base; 22. Separation spring; 23. Unlock push rod; 24. Spring sleeve; 26. Annular rib; 27. Pin extraction hole; 28. Ball-shaped groove;

[0039] 3. Lock body; 31. Lock block; 32. Lock core spring; 33. Limit rod; 34. Driving protrusion; 35. Lock cavity; 36. Square section; 37. Threaded section; 38. Reset thread groove; 39. Reset hole; 390. Driving slope; 391. Inclined surface; 392. Limit edge;

[0040] 4. Lock core cylinder; 41. Limit groove; 42. Fixed plate; 43. Fixed hole;

[0041] 5. Star body connecting plate; 51. Limit square hole; 52. Limit ring groove; 53. Nut hidden groove; 54. Locking nut. Detailed Implementation Modes

[0042] The principles and features of the present invention will be described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0043] As Figures 1 to 11 shown, a star - arrow separation device with separation guidance in this embodiment includes a pin puller 1, a lock seat 2, a lock core cylinder 4, a separation spring 22, an unlocking push rod 23, a spring sleeve 24, a lock body 3, a lock block 31, a lock core spring 32 and a limit rod 33. The lock seat 2 has an assembly cavity, and a pin - pulling hole 27 is provided on the side wall of the assembly cavity. The pin puller 1 is installed in the pin - pulling hole 27. The lock core cylinder 4 is installed in the assembly hole at the upper end of the assembly cavity and is coaxially arranged with the assembly cavity. The spring sleeve 24 is coaxially sleeved outside the unlocking push rod 23, and the lower end of the spring sleeve 24 is connected to the lower end of the unlocking push rod 23. The unlocking push rod 23 is coaxially sleeved inside the lower end of the lock core cylinder 4, and the spring sleeve 24 is sleeved outside the lower end of the lock core cylinder 4. The separation spring 22 is sleeved outside the spring sleeve 24. The lower end of the separation spring 22 is connected to the lower end of the assembly cavity, and the upper end of the separation spring 22 is connected to the upper end of the spring sleeve 24. The pin puller 1 can telescopically move along the radial direction of the assembly cavity to lock or unlock the spring sleeve 24.

[0044] The lock body 3 is adaptively installed in the lock core cylinder 4 and can extend from the upper end of the lock core cylinder 4. A satellite connecting rod is provided at the upper end of the lock body 3. A limit groove 41 is provided inside the lock core cylinder 4. A lock cavity 35 is provided inside the lock body 3. A limit rod 33 is provided inside the lock cavity 35. The lower end of the limit rod 33 extends out of the lock cavity 35 and abuts against the upper end of the unlocking push rod 23. The upper end of the limit rod 33 is elastically abutted against the lock cavity 35 through the lock core spring 32. A lock block 31 penetrating the side wall of the lock cavity 35 is provided on the side wall of the lock body 3. A driving protrusion 34 is provided on the limit rod 33. The lock block 31 can be pushed into the limit groove 41 by the driving protrusion under the action of the separation spring 22, and can also be pushed into the lock cavity 35 on both sides of the driving protrusion 34 by the groove wall of the limit groove 41.

[0045] Specifically, the pin puller is an SMA pin puller. When the SMA pin puller is not powered, the locking pin at its end extends out and restricts the movement of the spring sleeve in the lock seat. When the SMA pin puller is powered, the locking pin at its end retracts to cancel the restriction on the spring sleeve.

[0046] As Figure 1 shown, the lower end of the spring sleeve 24 is fixedly connected to the lower end of the unlocking push rod 23 by bolts. The upper end of the spring sleeve forms an outward - turned edge, and the upper end of the separation spring can be abutted inside the outward - turned edge. The separation spring is always in a compressed state.

[0047] AsFigure 5 As shown in the figure, a preferred solution of this embodiment is that the limiting groove 41 is annular and arranged along the circumferential direction of the lock cylinder 4, and the limiting groove 41 has a tapered structure with a smaller upper part and a larger lower part; one end of the lock block 31 extending out of the lock cavity 35 is provided with an inclined surface 391 adapted to the side wall of the tapered structure. By providing the limiting groove with a tapered structure, it is convenient to drive the radial movement of the lock block.

[0048] Furthermore, multiple groups of lock blocks are provided on the lock body 3, each group of lock blocks includes a plurality of lock blocks, and the multiple lock blocks in each group are arranged at intervals along the circumferential direction of the lock body 3. The multiple groups of lock blocks are arranged at intervals along the axial direction of the lock body 3.

[0049] Preferably, as Figure 3 shown in the figure, driving slopes 390 are provided at both axial ends of the driving protrusion 34 of this embodiment. The setting of the driving slopes facilitates the movement of the lock block.

[0050] As Figures 3 to 5 shown in the figure, the number of the driving protrusions 34, the limiting grooves 41 and the lock blocks 31 in this embodiment is two, and the two driving protrusions 34, the two limiting grooves 41 and the two lock blocks 31 can be arranged in one-to-one correspondence.

[0051] As Figure 9 shown in the figure, a circular protrusion (not indicated in the figure, Figure 10 it can be seen that the lock block abuts against the circular protrusion) is provided on the outer peripheral side wall of the limiting rod 33, and a space for accommodating the lock block 31 is formed between the circular protrusion and an adjacent driving protrusion 34, and between two adjacent driving protrusions 34.

[0052] As Figure 3 shown in the figure, a limiting edge 392 is provided at one end of the lock block 31 located in the lock cavity 35 of this embodiment. When the lock block 31 extends out of the lock cavity 35, the limiting edge 392 abuts against the inner side wall of the lock cavity 35. The setting of the limiting edge prevents the lock block from disengaging from the lock cavity.

[0053] As Figure 2 and Figure 3 shown in the figure, the lower end of the limiting rod 33 of this embodiment is a spherical end face, and the upper end of the unlocking push rod 23 is provided with a spherical groove 28, and the spherical end face is adapted to the spherical groove 28.

[0054] As Figure 3 shown in the figure, the driving protrusion 34 of this embodiment is an annular structure provided around the circumference of the limiting rod 33.

[0055] As Figures 1 to 3 shown in the figure, a retaining ring is provided at the lower end of the lock body 3 to prevent the limiting rod 33 from disengaging from the lock cavity of the lock body.

[0056] As Figure 5As shown, a fixing plate 42 is provided on the outer peripheral side wall at the upper end of the lock core cylinder 4 of this embodiment. Fixing holes 43 are provided on the fixing plate 42, and the fixing plate 42 can be fixedly connected to the assembly hole at the upper end of the lock base 2 through the fixing holes 43.

[0057] As Figure 1 , Figures 6 to 11 shown, the star-arrow separation device of this embodiment further includes a star body connecting plate 5; the satellite connecting rod includes a square section 36 and a threaded section 37 that are coaxially and integrally connected, and the square section 36 is located between the lock body 3 and the threaded section 37; an annular rib 26 is provided on the upper end face of the lock base 2, and a limiting square hole 51 adapted to the square section 36 is provided at the central position of one side face of the star body connecting plate 5. A limiting ring groove 52 is also provided on one side face of the star body connecting plate 5, and the annular rib 26 is appropriately arranged in the limiting ring groove 52; the threaded section 37 passes through the star body connecting plate 5 and the locking of the star body connecting plate 5 and the lock body 3 is realized through a locking nut 54. The setting of the square section can ensure that when the locking nut outside the star body connecting plate is tightened with the threaded section, the two will not rotate relative to each other. At the same time, mounting holes for connecting with the satellite are reserved on the star body connecting plate.

[0058] The lower end of the lock core cylinder 4 extends beyond the pin extraction hole, and an annular gap is formed between the spring sleeve 24 and the unlocking push rod 23. The lock core cylinder 4 can move up and down adaptively within the annular gap.

[0059] As Figure 3 shown, a reset hole 39 communicating with the lock cavity 35 is provided in the middle of the satellite connecting rod of this embodiment. A reset thread groove 38 is provided at one end of the limiting rod 33 close to the reset hole 39, and the reset thread groove 38 is coaxially arranged with the reset hole 39; the lock core spring 32 is located between the reset thread groove 38 and the reset hole 39. By providing the reset hole and the reset thread groove, the lock core spring can be reset to the compressed state through a reset bolt in the initial state. A nut hiding groove 53 is also provided at the middle position of one side face of the star body connecting plate 5 for hiding the locking nut 54 in the nut hiding groove 53.

[0060] For the star-arrow separation device with separation guidance of this embodiment, by arranging the lock body in the lock core cylinder and installing the lock core cylinder at the upper end of the lock base, the lock core cylinder and the lock body are limited or unlocked through the lock block. There is a cooperation relationship between the lock body and the lock core cylinder before separation, and the two can only move axially. Therefore, the lock body moves under guidance, avoiding the phenomenon of attitude swing of the satellite during the separation process.

[0061] This embodiment also provides a star-arrow separation method for the star-arrow separation device with separation guidance, including the following steps:

[0062] S1. In the initial state of the pin puller 1, the lower end locking pin extends out of the pin pulling hole and locks the spring sleeve 24 to restrict the axial movement of the spring sleeve 24. At this time, the separating spring 22 is in a compressed state.

[0063] S2. In the working state of the pin puller 1, the lower end locking pin retracts to release the locking of the spring sleeve 24. Under the action of the separating spring 22, the spring sleeve 24 drives the unlocking push rod 23 to move axially. At the same time, the unlocking push rod 23 pushes the limiting rod 33 to move axially along the lock core cylinder 4.

[0064] S3. After the limiting rod 33 moves a certain distance, the lock block 31 disengages from the limiting rod 33. Under the continuous action of the thrust of the separating spring 22, the unlocking push rod 23 pushes the lock body 3 to move axially. At this time, the limiting groove 41 of the lock core cylinder 4 in the lock seat 2 presses the lock block 31 to move radially along the lock body 3 into the lock cavity 35, thereby releasing the limit between the lock body 3 and the lock seat 2. Under the continuous push of the separating spring 22, the lock body 3 is completely pushed out of the assembly cavity, thus realizing the complete separation of the lock body 3 and the lock seat 2.

[0065] In the satellite-rocket separation method of this embodiment, the satellite-rocket separation process is stable and can effectively avoid the phenomenon of attitude swing of the satellite during the separation process.

[0066] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0067] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0068] In the present invention, unless otherwise clearly defined or limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the present invention, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0070] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0071] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A satellite-rocket separation device with separation guide, characterized in that: The lock body comprises a lock core cylinder, a release spring, an unlocking push rod, a spring sleeve, a lock body, a lock block, a lock core spring and a limit rod, the lock base having an assembly cavity, a pin pulling hole being provided on the side wall of the assembly cavity, the pin puller being installed in the pin pulling hole; the lock core cylinder being installed in the assembly hole at the upper end of the assembly cavity and being coaxially arranged with the assembly cavity, the spring sleeve being coaxially sleeved outside the unlocking push rod and the lower end of the spring sleeve being connected with the lower end of the unlocking push rod, the unlocking push rod being coaxially sleeved inside the lower end of the lock core cylinder, and the spring sleeve being sleeved outside the lower end of the lock core cylinder; the release spring being sleeved outside the spring sleeve, the lower end of the release spring being connected with the lower end of the assembly cavity, and the upper end of the release spring being connected with the upper end of the spring sleeve; the pin puller can be extended and retracted along the radial direction of the assembly cavity to realize locking or unlocking of the spring sleeve; The lock body is adapted to be installed in the lock core barrel and can extend from the upper end of the lock core barrel, a satellite connecting rod is provided at the upper end of the lock body, and a limit groove is provided in the lock core barrel; a lock cavity is provided in the lock body, a limit rod is provided in the lock cavity, the lower end of the limit rod extends out of the lock cavity and abuts against the upper end of the unlocking push rod, the upper end of the limit rod elastically abuts against the lock cavity through a lock core spring, a lock block that passes through the side wall of the lock cavity is provided on the side wall of the lock body, and a driving protrusion is provided on the limit rod; the lock block can be pushed into the limit groove by the driving protrusion under the action of the separation spring, and can also be pushed into the lock cavity on the upper and lower sides of the driving protrusion by the groove wall of the limit groove.

2. A satellite-rocket separation device with separation guidance according to claim 1, characterized in that: The limiting groove is annular and arranged along the circumference of the lock core tube. The limiting groove is a conical structure that is small at the top and large at the bottom. The end of the lock block extending from the lock cavity is provided with an inclined surface that is adapted to the side wall of the conical structure.

3. A satellite-rocket separation device with separation guidance according to claim 2, characterized in that: Both axial ends of the driving protrusion are provided with driving ramps.

4. The satellite-rocket separation device with separation guide according to claim 1, characterized in that: The number of the driving protrusions, the limiting grooves and the locking blocks are two each, and the two driving protrusions, the two limiting grooves and the two locking blocks can be arranged in a one-to-one correspondence.

5. The satellite-rocket separation device with separation guide according to claim 4, characterized in that: A circle of annular protrusions is arranged on the outer peripheral side wall of the limiting rod, and a space for accommodating a locking block is formed between the annular protrusion and an adjacent driving protrusion, and between two adjacent driving protrusions.

6. The satellite-rocket separation device with separation guide according to claim 1, characterized in that: One end of the locking block located in the locking cavity is provided with a limiting edge, and when the locking block extends out of the locking cavity, the limiting edge abuts against the inner side wall of the locking cavity.

7. The satellite-rocket separation device with separation guide according to claim 1, characterized in that: The driving protrusion is an annular structure arranged around the circumference of the limiting rod.

8. The satellite-rocket separation device with separation guide according to claim 1, characterized in that: It also includes a satellite connecting plate; the satellite connecting rod includes a square section and a threaded section that are coaxially and integrally connected, the square section is located between the lock body and the threaded section; an annular convex rib is provided on the upper end face of the lock seat, a limiting square hole matching the square section is provided at the center position of one side of the satellite connecting plate, a limiting ring groove is also provided on one side of the satellite connecting plate, and the annular convex rib is adapted to be configured in the limiting ring groove; the threaded section passes through the satellite connecting plate and the locking of the satellite connecting plate and the lock body is achieved through a locking nut.

9. The satellite-rocket separation device with separation guide according to claim 1, characterized in that: A reset hole connected to the lock cavity is provided in the middle of the satellite connecting rod, and a reset thread groove is provided at one end of the limit rod close to the reset hole. The reset thread groove is coaxially arranged with the reset hole; the lock core spring is located between the reset thread groove and the reset hole.

10. A satellite-rocket separation method according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, in the initial state of the pin puller, the end locking pin extends out of the pin pulling hole and locks the spring sleeve to limit the axial movement of the spring sleeve. At this time, the separation spring is in a compressed state; S2, when the pin puller is in working state, the end lock pin retracts to release the lock of the spring sleeve. Under the action of the separation spring, the spring sleeve drives the unlocking push rod to move axially, and at the same time, the unlocking push rod pushes the limit rod to move axially along the lock cylinder; S3, after the limit rod moves a certain distance, the lock block is separated from the limit rod, and under the continued action of the separation spring thrust, the unlocking push rod pushes the lock body to move axially. At this time, the limit groove of the lock core tube in the lock seat presses the lock block to move radially along the lock body into the lock cavity, thereby releasing the limit between the lock body and the lock seat. Under the continued push of the separation spring, the lock body is completely pushed out of the assembly cavity, thereby realizing the complete separation of the lock body and the lock seat.

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