A separation and unlocking mechanism based on a rotating electromagnet and a separation and unlocking method

Abstract

The present invention discloses a separation unlocking mechanism and separation unlocking method based on a rotating electromagnet, comprising an upper cylinder, a lower cylinder, a locking device, a rotating device, a pushing device, a driving device, a limit pin, a loading nut and a micro switch, wherein the upper cylinder is sleeved on the lower cylinder, the rotating device is installed on the driving device and can rotate with the driving device, the locking device is passed through the upper cylinder and the lower cylinder and abuts against the rotating device, locking the upper cylinder and the lower cylinder together, when the driving device receives a satellite separation signal, the rotating device is driven by the driving device to rotate from the abutting position to the disengaging position, releasing the abutment between the rotating device and the locking device, the locking device is disengaged from the upper cylinder, the upper cylinder and the lower cylinder are unlocked, and the upper cylinder is ejected under the action of the pushing device, completing the satellite-rocket separation. The present invention solves the problems of complex structure, high cost, large envelope size and heavy mass of the satellite-rocket separation mechanism.

Description

Technical Field

[0001] The present invention relates to the field of satellite-rocket separation, and in particular to a separation and unlocking mechanism and a separation and unlocking method based on a rotating electromagnet. Background Art

[0002] Satellite-rocket separation is an important step in the satellite launch process. The separation mechanism provides reliable connection before the satellite is released, unlocks it in orbit, and releases the satellite safely at a predetermined release speed.

[0003] In the prior art, the pyrotechnic separation method often adopts the wrapping type, point type and other methods, and the non-pyrotechnic separation method often adopts the hot knife separation box structure (P-POD). The prior art has the following shortcomings when used for satellite-rocket separation: the pyrotechnic separation will produce a large impact force, which is easy to cause a destructive impact on the single machine on the satellite, causing certain damage to the satellite to be separated, especially the launch of multiple satellites with one rocket, which may cause damage to other satellites; the pyrotechnic explosive separation will inevitably produce excess materials, which is easy to pollute the single machine on the satellite, especially the optical single machine such as the remote sensing payload; the pyrotechnic is a mature product, disposable and non-reusable, with a high cost, which is not conducive to repeated ground tests; the instantaneous current is large when the pyrotechnic is separated, and the requirement for the ability to carry the instantaneous current is high. The hot knife separation box structure (P-POD) is complex in structure, large in envelope size, and heavy in weight. Summary of the invention

[0004] In view of this, the present invention provides a separation and unlocking mechanism and a separation and unlocking method based on a rotating electromagnet, which solve the difficult problems of the satellite-rocket separation mechanism such as complex structure, high cost, large envelope size and heavy mass.

[0005] The separation and unlocking mechanism based on rotating electromagnet provided by the present invention comprises an upper cylinder, a lower cylinder, a locking device, a rotating device, and a driving device. The upper cylinder is sleeved on the lower cylinder, the rotating device is installed on the driving device and can rotate together with the driving device, the locking device crosses the upper cylinder and the lower cylinder and abuts against the rotating device to lock the upper cylinder and the lower cylinder together, and when the driving device receives a satellite separation signal, the rotating device is driven by the driving device to rotate from the abutting position to the disengaged position, releasing the abutment between the rotating device and the locking device, the locking device is disengaged from the upper cylinder, and the upper cylinder and the lower cylinder are unlocked.

[0006] Furthermore, it also includes a pushing device, which is in a compressed state when the upper tube and the lower tube are locked and passes through the lower tube to contact the upper tube. When the rotating device rotates to the disengaged position, the pushing device pushes the upper tube to move upward under the action of the restoring force, and the upper tube is separated from the lower tube.

[0007] Furthermore, the upper tube and the lower tube are both cylindrical structures, the first locking holes are evenly distributed on the tube wall of the upper tube, the second locking holes are evenly distributed on the tube wall of the lower tube, and the locking device sequentially crosses the second locking holes and the first locking holes and then abuts against the rotating device.

[0008] Furthermore, the rotating device includes a rotating block and a bearing, the bearing is mounted on the rotating block and is located between the rotating block and the top surface of the lower cylinder, the driving device includes an electromagnet and a rotating shaft located in the middle of the electromagnet, the rotating block is fixed on the rotating shaft and can rotate with the rotating shaft.

[0009] Furthermore, the locking device includes an unlocking spring, a first clamping cap, an inner retaining ring, an inner sleeve, a locking shaft, an outer retaining ring, an outer sleeve and a second clamping cap, wherein the unlocking spring is sleeved outside the first clamping cap, and the first clamping cap abuts against the rotating device after the locking shaft passes through the upper tube and the lower tube, pressing the unlocking spring against the inner tube wall of the lower tube. The second clamping cap is located outside the upper tube and inserted into the first locking hole, the inner sleeve is sleeved on one end of the locking shaft close to the first clamping cap, and is limited by the inner retaining ring, the outer sleeve is sleeved on one end of the locking shaft close to the second clamping cap, and is limited by the outer retaining ring, and the inner sleeve and the outer sleeve are plated with molybdenum disulfide film.

[0010] Furthermore, it also includes a limit pin, which is fixed on the inner top surface of the lower cylinder. The rotating block includes a limit ear that protrudes radially from the rotating block. The limit ear is blocked by the limit pin after the rotating device rotates to the disengaged position to prevent the rotating block from over-rotating.

[0011] Furthermore, the rotating block also includes a locking ear protruding radially from the rotating block, and the locking ear is located below the limiting ear. When the rotating device is in the abutting position, the locking ear abuts against the locking device. When the rotating device is rotated to the disengaged position, the locking device is located in a recessed position between adjacent locking ears.

[0012] Furthermore, it also includes a lower cover and a satellite thermal insulation pad, the lower tube and the electromagnet are installed on the lower cover, the lower cover is connected to the launch vehicle, the satellite thermal insulation pad is installed on the upper tube, and the satellite thermal insulation pad is connected to the satellite.

[0013] Furthermore, the pushing device includes a separation action ring, an action push rod, a separation lower ring, a separation spring and a spring sleeve, one end of the spring sleeve is fixed on the separation lower ring, and the other end is fixed on the lower cover, the separation spring is sleeved on the separation sleeve, when the upper tube and the lower tube are locked, the separation spring is in a compressed state, the separation action ring is located between the top surfaces of the upper tube and the lower tube and can act on the upper tube, the action push rod is fixed between the separation action ring and the separation lower ring and passes through the positioning hole on the lower tube, and the separation action ring and the action push rod can slide upward relative to the lower tube under the drive of the separation spring.

[0014] Furthermore, the top surface of the upper tube is also provided with an anti-shearing cone hole, and the top surface of the lower tube is provided with an anti-shearing cone pin which is corresponding in position and protrudes outwards, and the anti-shearing cone pin is plated with tungsten carbide.

[0015] Furthermore, it also includes a micro switch and a pin, the micro switch is fixed to the upper tube, the pin is inserted into the micro switch and fixed on the top of the lower tube, when the upper tube is separated from the lower tube, the micro switch is disengaged from the pin and sends a signal to the control system to inform that the separation of the upper tube and the lower tube is completed.

[0016] The present invention also provides a separation and unlocking method of the separation and unlocking mechanism based on a rotating electromagnet as described above, comprising the following steps:

[0017] Receive the satellite-rocket separation signal;

[0018] The driving device drives the rotating device to rotate after receiving the separation signal;

[0019] After the rotating device rotates to the disengaged position, the locking device escapes from the upper tube, and the upper tube is unlocked from the lower tube.

[0020] Furthermore, the separation method further comprises: when the rotating device rotates to the disengagement position, the upper cylinder is pushed upward by a pushing device, and the upper cylinder is separated from the lower cylinder.

[0021] Compared with the existing technology, the present invention has the following beneficial technical effects:

[0022] The present invention provides a separation and unlocking mechanism and a separation and unlocking method based on a rotating electromagnet. The modular design is adopted, and the mechanism comprises a locking module, a rotating module and a pushing module. The space resources are reasonably and fully utilized, and the structure is compact. The entire upper tube and the lower tube are made of 7075-T651 aluminum alloy material, thereby solving the problems of large envelope size and heavy mass. Meanwhile, according to the mass characteristics and separation characteristic requirements of different satellites, different numbers of locking devices, electromagnets with different driving torques, and springs with different separation driving forces can be selected, thereby greatly satisfying the separation requirements of different satellites and increasing the adaptability of the separation mechanism to satellites of different magnitudes. The rotating electromagnet is adopted as the only driving source to replace pyrotechnics, thereby solving the problems of large impact, debris pollution, high cost, and non-repeatability. The locking device is designed by applying the fork principle to lock and unlock the upper tube and the lower tube. By designing three conical bosses at the connecting surface of the upper tube and the lower tube, a bearing is arranged on the rotating device, and a loading nut is arranged on the upper tube, etc., the rigidity of the whole structure is improved, thereby ensuring that the separation mechanism can withstand the axial and longitudinal loads, torque and bending moment in the launch stage, and has a large bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0025] Figure 3 is a cross-sectional view of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the pushing device in the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the cooperation between the rotating device and the driving device in the present invention;

[0028] Figure 6 It is a structural schematic diagram of the rotating block in the present invention;

[0029] Figure 7 It is a structural schematic diagram of the upper cylinder in the present invention;

[0030] Figure 8 It is a structural schematic diagram of the lower drum in the present invention;

[0031] Fig. 9 It is a schematic diagram of the structure of the locking device in the present invention.

[0032] Among them: 10-upper cylinder; 11-first locking hole; 12-anti-shear cone hole; 13-separation action surface; 20-lower cylinder; 21-second locking hole; 22-anti-shear cone pin; 23-positioning hole; 30-locking device; 31-unlocking spring; 32-first clamping cap; 33-inner retaining ring; 34-inner sliding sleeve; 35-locking shaft; 36-outer retaining ring; 37-outer sliding sleeve; 38-second clamping cap; 40-rotating device; 41-rotating block; 411-limiting ear; 41 2-locking ear; 414-bearing mounting portion; 42-bearing; 43-pin hole; 50-driving device; 51-electromagnet; 52-rotating shaft; 60-pushing device; 61-separation action ring; 62-action push rod; 63-separation lower ring; 64-separation spring; 65-spring sleeve; 70-lower cover; 80-limit pin; 90-loading nut; 91-fixed shaft; 92-anti-loosening nut; 100-micro switch; 101-pin; 120-satellite thermal insulation pad. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] In the description of the present invention, it should be noted that the orientation or position relationship indicated in the description is based on the orientation or position relationship shown in the accompanying drawings, and 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 cannot be understood as a limitation on the present invention.

[0035] Please refer to Figure 1-3The present invention provides a separation and unlocking mechanism based on a rotating electromagnet, comprising an upper cylinder 10, a lower cylinder 20, a locking device 30, a rotating device 40, a driving device 50, a pushing device 60, a lower cover 70, a limit pin 80, a loading nut 90, a micro switch 100 and a satellite thermal insulation pad 120. The lower cylinder 20 and the driving device 50 are both mounted on the lower cover 70, the lower cover 70 is connected to the launch vehicle, the satellite thermal insulation pad 120 is mounted on the upper cylinder 10, the satellite thermal insulation pad 120 is connected to the satellite, the loading nut 90 and the micro switch 100 are both mounted on the upper cylinder 10, the upper cylinder 10 is sleeved on the lower cylinder 20, the rotating device 40 is mounted on the driving device 50, and the driving device 50 is driven by the driving device 50. The driving device 50 is located inside the lower tube 20, the pushing device 60 is in a compressed state and passes through the lower tube 20 to contact the upper tube 10, the locking device 30 crosses the upper tube 10 and the lower tube 20 and abuts against the rotating device 40 to lock the upper tube 10 and the lower tube 20 together. When the driving device 50 receives the satellite separation signal, the rotating device 40 is driven by the driving device 50 to rotate from the abutting position to the disengaged position, and the abutment between the rotating device 40 and the locking device 30 is released. The locking device 30 is disengaged from the upper tube 10, and the upper tube 10 and the lower tube 20 are unlocked. The pushing device 60 pushes the upper tube 10 upward under the action of the restoring force until it is separated from the lower tube 20, and the satellite-rocket separation is completed.

[0036] Please refer to Figure 7-8 The upper tube 10 and the lower tube 20 are both cylindrical structures. Both the upper tube 10 and the lower tube 20 include a tube wall and a top surface. The tube wall around the upper tube 10 is uniformly provided with a first locking hole 11, and the tube wall around the lower tube 20 is uniformly provided with a corresponding second locking hole 21. In this embodiment, there are three first locking holes 11 and three second locking holes 21. The locking device 30 sequentially crosses the second locking hole 21 and the first locking hole 11 and abuts against the rotating device 40. The top surface of the upper tube 10 is provided with an anti-shearing cone hole 12, and the top surface of the lower tube 20 is provided with an anti-shearing cone pin 22 that is corresponding in position and protrudes outward, and the anti-shearing cone pin 22 passes through the anti-shearing cone hole 12. The cooperation of the anti-shearing cone hole 12 and the anti-shearing cone pin 22 can prevent the lateral shear force from damaging the separation and unlocking mechanism. At the same time, tungsten carbide is plated on the anti-shearing cone pin 22 to increase the anti-shearing effect and prevent cold welding. In this embodiment, there are three anti-shearing cone holes 12 and three anti-shearing cone pins 22. The top surface of the upper tube 10 is also provided with a separation action surface 13, and the top surface of the lower tube 20 is also provided with a positioning hole 23. During the separation process of the rocket and the satellite, the thrust of the pushing device 60 acts on the separation action surface 13, thereby pushing the upper tube 10 upward, and the positioning hole 23 is provided to limit the movement direction of the pushing device 60, so that it can only move up and down. In this embodiment, there are three positioning holes 23.

[0037] Please refer to Figure 3The upper tube 10 is connected to the satellite by screws passing through the satellite insulation pad 120, and the lower tube 20 is fixed to the lower cover 70 by screws. The lower cover 70 is connected to the carrier rocket. In this way, after the upper tube 10 and the lower tube 20 are separated, the satellite and the carrier rocket are also separated.

[0038] Furthermore, a fixed shaft 91 is provided on the outer top surface of the upper cylinder 10, a loading nut 90 is threadedly mounted on the fixed shaft 91, and a locking nut 92 is threadedly mounted on the loading nut 90. The pre-tightening force of the upper cylinder 10 in the vertical direction can be further ensured by tightening the loading nut 90 and the locking nut 92. The micro switch 100 also includes a pin 101, which passes through the top of the upper tube 10 and is fixed on the top of the lower tube 20. The micro switch 100 is fixed on the top of the upper tube 10 and is provided with a spring therein. The micro switch 100 is signal-connected with the satellite and the launch vehicle. When the upper tube 10 and the lower tube 20 are locked together by the locking device 30, the micro switch 100 conflicts with the pin 101, and the spring in the micro switch 100 is in a compressed state. At this time, the signal is that the satellite and the rocket are not separated. When the upper tube 10 and the lower tube 20 are separated, the spring in the micro switch 100 recovers. At this time, the signal is that the satellite and the rocket are separated. The micro switch 10 sends a signal to the control system to inform that the separation of the upper tube 10 and the lower tube 20 is completed.

[0039] Please refer to Figure 3 , 5 -6, the rotating device 40 includes a rotating block 41 and a bearing 42. A bearing mounting portion 414 is provided on the top of the rotating block 41. The bearing 42 is fixed to the rotating block 41 through the bearing mounting portion 414 and is located between the rotating block 41 and the top surface of the lower cylinder 20. As the rotating block 41 rotates, the rolling friction of the bearing 42 can reduce the rotation resistance torque of the rotating block 41. The driving device 50 includes an electromagnet 51 and a rotating shaft 52 located in the middle of the electromagnet 51. The rotating block 41 is sleeved on the rotating shaft 52. A pin hole 43 is provided in the middle of the rotating block 41. The rotating block 41 is fixed to the rotating shaft 52 through the pin and the pin hole 43. The electromagnet 51 is fixed to the lower cover 70 by screws. When the electromagnet 51 is energized, it can rotate the rotating shaft 52, driving the rotating device 40 to rotate. The rotating block 41 further includes a locking ear 412 and a limiting ear 411 radially protruding from the rotating block 41. The locking ear 412 is located below the limiting ear 411. When the rotating device 40 is located at the abutting position, the locking ear 412 abuts against the locking device 30. When the rotating device 40 rotates to the disengaged position, the locking device 30 is located at a recessed position between adjacent locking ears 412. A limiting pin 80 is provided on the inner top surface of the lower cylinder 10. The limiting ear 411 can be blocked by the limiting pin 80 during the rotation process to prevent the rotating block 41 from over-rotating. In this embodiment, there are three limiting ears 411, three locking ears 412 and three limiting pins 80.

[0040] Please refer to Figure 3 , Fig. 9 The locking device 30 includes an unlocking spring 31, a first clamping cap 32, an inner retaining ring 33, an inner sleeve 34, a locking shaft 35, an outer retaining ring 36, an outer sleeve 37 and a second clamping cap 38. The first clamping cap 32 is located inside the lower cylinder 20 and is threadedly connected to one end of the locking shaft 35. The unlocking spring 31 is sleeved outside the first clamping cap 32. The first clamping cap 32 abuts against the locking ear 412 to press the unlocking spring 31 against the inner wall of the lower cylinder 20. The second clamping cap 38 is located outside the upper cylinder 10 and inserted into the first locking hole 11. The second clamping cap 38 is connected to the other end of the locking shaft 35. Under the abutment of the locking ear 412, the unlocking spring 31 is always in a compressed state, and the upper cylinder 10 and the lower cylinder 20 are locked. The inner sleeve 34 is sleeved on one end of the locking shaft 35 close to the first clamping cap 32 and is limited by the inner retaining ring 33. The outer sleeve 37 is sleeved on one end of the locking shaft 35 close to the second clamping cap 38 and is limited by the outer retaining ring 36. The inner sleeve 34 and the outer sleeve 37 are plated with molybdenum disulfide film to reduce the sliding friction between the locking device 30 and the first locking hole 11 and the second locking hole 21, and prevent cold welding. When the locking device 30 loses the contact force with the locking ear 412, the unlocking spring 31 restores the elastic force, which can quickly drive the locking shaft 35 to move in the direction of the rotating device 40, so that the upper cylinder 10 and the lower cylinder 20 are unlocked. In this embodiment, there are three locking devices 30.

[0041] Please refer to Figure 3-4 The pushing device 60 includes a separation action ring 61, an action push rod 62, a separation lower ring 63, a separation spring 64 and a spring sleeve 65. One end of the spring sleeve 65 is mounted on the separation lower ring 63, and the other end is fixed on the lower cover 70. The separation spring 64 is sleeved on the separation sleeve 65 and is in a compressed state under the action of the preload force. The action push rod 62 is fixed between the separation action ring 61 and the separation lower ring 63. The action push rod 62 passes through the positioning hole 23 of the lower tube 20, so that the separation action ring 61 is located between the top surfaces of the upper tube 10 and the lower tube 20. In the process of separating the rocket and the satellite, the locking device 30 and the rotating device 40 lose the contact force. After the upper tube 10 and the lower tube 20 are unlocked, the pushing device 60 loses the preload force. In the process of restoring the elastic force, the separation spring 64 drives the action push rod 62 to move upward. The action push rod 62 drives the separation action ring 61 to act on the separation action surface 13 of the upper tube 10 to push the upper tube 10 out.

[0042] The present invention also provides a separation and unlocking method of the separation and unlocking mechanism based on a rotating electromagnet as described above, comprising the following steps:

[0043] Step 1: Receive the satellite-rocket separation signal;

[0044] Step 2: After the driving device 50 receives the satellite-rocket separation signal, the electromagnet 51 starts to be energized, the rotating shaft 52 starts to rotate and drives the limiting ear 411 and the locking ear 412 in the rotating device 40 to rotate;

[0045] Step 3: During the rotation process, the locking ear 412 in the rotating device 40 and the first pressing cap 32 in the locking device 30 lose their abutting force and then separate, the locking shaft 35 moves toward the inside of the lower tube 20, and the upper tube 10 and the lower tube 20 are unlocked;

[0046] Step 4: After the upper tube 10 and the lower tube 20 are unlocked, the separation spring 64 in the pushing device 60 loses its preload force and restores its elastic force to move upward, the action push rod 62 moves upward in the positioning hole 23, and the separation action ring 61 acts on the separation action surface 13 of the upper tube 10 to push the upper tube 10 upward, and the upper tube is separated from the lower tube 20;

[0047] Step 5: The micro switch 100 sends a satellite-rocket separation signal, and the satellite-rocket separation is completed.

[0048] From the above description, it can be known that the separation mechanism and separation method based on rotating electromagnet provided by the present invention adopt modular design, including locking module, rotating module and pushing module, reasonably and fully utilizing space resources, compact structure, the entire upper tube and lower tube are made of 7075-T651 aluminum alloy material, thereby solving the problems of large envelope size and heavy mass, and at the same time, according to the quality characteristics and separation characteristics of different satellites, different numbers of locking devices, electromagnets with different driving torques, and springs with different separation driving forces can be selected, which greatly meets the separation requirements of different satellites and increases the adaptability of the separation mechanism to satellites of different magnitudes; the rotating electromagnet is used as the only driving source to replace the pyrotechnics, thereby solving the problems of large impact, debris pollution, high cost, and non-repeatability; the locking device is designed by applying the fork principle to lock and unlock the upper tube and the lower tube, and the rigidity of the overall structure is improved by designing 3 conical bosses at the connecting surface of the upper tube and the lower tube, a bearing is provided on the rotating device, and a loading nut is provided on the upper tube, thereby ensuring that the separation mechanism withstands the axial and longitudinal loads, torque and bending moment in the launch stage, and has a large bearing capacity.

[0049] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A separation and unlocking mechanism based on a rotating electromagnet, characterized in that: The invention comprises an upper cylinder (10), a lower cylinder (20), a locking device (30), a rotating device (40), a driving device (50), a pushing device (60), and a lower cover (70); the upper cylinder (10) is sleeved on the lower cylinder (20); the rotating device (40) is installed on the driving device (50) and can rotate together with the driving device (50); the locking device (30) crosses the upper cylinder (10) and the lower cylinder (20) and abuts against the rotating device (40) to lock the upper cylinder (10) and the lower cylinder (20) together; when the driving device (50) receives a satellite separation signal, the rotating device (40) is driven by the driving device (50) to rotate from an abutting position to a disengaging position, thereby releasing the abutment between the rotating device (40) and the locking device (30), and the locking device (30) is disengaged from the upper cylinder (10), and the upper cylinder (10) and the lower cylinder (20) are unlocked; the pushing device (60) is driven by the driving device (50) to rotate from an abutting position to a disengaging position, thereby releasing the abutment between the rotating device (40) and the locking device (30), and the locking device (30) is disengaged from the upper cylinder (10), and the upper cylinder (10) and the lower cylinder (20) are unlocked; The device (60) comprises a separation action ring (61), an action push rod (62), a separation lower ring (63), a separation spring (64) and a spring sleeve (65); one end of the spring sleeve (65) is fixed to the separation lower ring (63), and the other end is fixed to the lower cover (70); the separation spring (64) is sleeved on the spring sleeve (65); when the upper tube (10) and the lower tube (20) are locked, the separation spring (64) is in a compressed state. The separation action ring (61) is located between the top surfaces of the upper cylinder (10) and the lower cylinder (20) and is capable of acting on the upper cylinder (10). The action push rod (62) is fixed between the separation action ring (61) and the separation lower ring (63) and passes through a positioning hole (23) on the lower cylinder (20). The separation action ring (61) and the action push rod (62) are capable of sliding upward relative to the lower cylinder (20) under the drive of the separation spring (64).

2. The separation and unlocking mechanism based on a rotating electromagnet according to claim 1, characterized in that: The pushing device (60) is in a compressed state when the upper cylinder (10) and the lower cylinder (20) are locked, and passes through the lower cylinder (20) to contact the upper cylinder (10); when the rotating device (40) rotates to a disengaged position, the pushing device (60) pushes the upper cylinder (10) to move upward under the action of a restoring force, and the upper cylinder (10) is separated from the lower cylinder (20).

3. The separation and unlocking mechanism based on a rotating electromagnet according to claim 1, characterized in that: The upper cylinder (10) and the lower cylinder (20) are both cylindrical structures, the cylinder wall of the upper cylinder (10) is evenly distributed with first locking holes (11), the cylinder wall of the lower cylinder (20) is evenly distributed with second locking holes (21), and the locking device (30) sequentially crosses the second locking holes (21) and the first locking holes (11) and then abuts against the rotating device (40).

4. The separation and unlocking mechanism based on a rotating electromagnet according to claim 1, characterized in that: The rotating device (40) comprises a rotating block (41) and a bearing (42), wherein the bearing (42) is mounted on the rotating block (41) and is located between the rotating block (41) and the top surface of the lower cylinder (20), and the driving device (50) comprises an electromagnet (51) and a rotating shaft (52) located in the middle of the electromagnet (51), and the rotating block (41) is fixed on the rotating shaft (52) and can rotate together with the rotating shaft (52).

5. The separation and unlocking mechanism based on a rotating electromagnet according to claim 1, characterized in that: The locking device (30) comprises an unlocking spring (31), a first clamping cap (32), an inner retaining ring (33), an inner sliding sleeve (34), a locking shaft (35), an outer retaining ring (36), an outer sliding sleeve (37) and a second clamping cap (38), wherein the first clamping cap (32) is arranged at one end of the locking shaft (35), the unlocking spring (31) is sleeved outside the first clamping cap (32), and the first clamping cap (32) abuts against the rotating device (40) after the locking shaft (35) passes through the upper tube (10) and the lower tube (20), thereby locking the unlocking spring (31). 31) is pressed against the inner wall of the lower cylinder (20); the second clamping cap (38) is located outside the upper cylinder (10) and inserted into the first locking hole (11); the inner sleeve (34) is sleeved on one end of the locking shaft (35) close to the first clamping cap (32) and is limited by the inner retaining ring (33); the outer sleeve (37) is sleeved on one end of the locking shaft (35) close to the second clamping cap (38) and is limited by the outer retaining ring (36); the inner sleeve (34) and the outer sleeve (37) are plated with a molybdenum disulfide film.

6. The separation and unlocking mechanism based on a rotating electromagnet as claimed in claim 4, characterized in that: The invention also comprises a limit pin (80) fixed on the inner top surface of the lower cylinder (10); the rotating block (41) comprises a limit ear (411) protruding radially from the rotating block (41); the limit ear (411) is blocked by the limit pin (80) after the rotating device (40) rotates to a disengaged position, thereby preventing the rotating block (41) from over-rotating.

7. The separation and unlocking mechanism based on a rotating electromagnet according to claim 6, characterized in that: The rotating block (41) further comprises a locking ear (412) radially protruding from the rotating block (41); the locking ear (412) is located below the limiting ear (411); when the rotating device (40) is located at the abutting position, the locking ear (412) abuts against the locking device (30); when the rotating device (40) is rotated to the disengaged position, the locking device (30) is located in a recessed position between adjacent locking ears (412).

8. The separation and unlocking mechanism based on a rotating electromagnet according to claim 1, characterized in that: It also includes a satellite thermal insulation pad (120), the lower tube (20) and the electromagnet (51) are both mounted on the lower cover (70), the lower cover (70) is connected to the launch vehicle, the satellite thermal insulation pad (120) is mounted on the upper tube (10), and the satellite thermal insulation pad (120) is connected to the satellite.

9. The separation and unlocking mechanism based on a rotating electromagnet as claimed in claim 3, characterized in that: The top surface of the upper cylinder (10) is also provided with an anti-shearing cone hole (12), and the top surface of the lower cylinder (20) is provided with an anti-shearing cone pin (22) which is located in a corresponding position and protrudes outwards, and the anti-shearing cone pin (22) is plated with tungsten carbide.

10. The separation and unlocking mechanism based on a rotating electromagnet according to claim 1, characterized in that: It also includes a micro switch (100) and a pin (101), wherein the micro switch (100) is fixed to the upper cylinder (10), and the pin (101) is inserted into the micro switch (100) and fixed to the top of the lower cylinder (20). When the upper cylinder (10) is separated from the lower cylinder (20), the micro switch (10) is released from the pin (101) and sends a signal to the control system to inform that the separation of the upper cylinder (10) and the lower cylinder (20) is completed.

11. A separation and unlocking method of a separation and unlocking mechanism based on a rotating electromagnet as claimed in claim 1, characterized in that: The following steps are involved: Receive the satellite-rocket separation signal; The driving device (50) drives the rotating device (40) to rotate after receiving the separation signal; After the rotating device (40) rotates to the disengaged position, the locking device (30) escapes from the upper cylinder (10), and the upper cylinder (10) and the lower cylinder (20) are unlocked.

12. The separation method based on the separation mechanism of the rotating electromagnet according to claim 11, characterized in that: Also includes: When the rotating device (40) rotates to the disengaged position, the upper cylinder (10) is pushed upward by the pushing device (60), and the upper cylinder (10) is separated from the lower cylinder (20).

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