Two-stage unplugging structure with redundant electric push rod and working method of two-stage unplugging structure

Abstract

The invention discloses a secondary unplugging structure with a redundant electric push rod and a working method, and relates to the technical field of spaceflight, the secondary unplugging structure with the redundant electric push rod comprises a mounting bracket, at least two driving devices, at least two first traction parts, a traction connecting piece, a second traction part, a plug and a socket; a hanging ring mounting plate of the mounting bracket is connected with the bracket main body; the lifting ring bolt is connected with the lifting ring mounting plate; the at least two driving devices are arranged at the other end of the bracket main body; the driving device is connected with one end of the first traction component, and the other end of the first traction component is connected with the traction connecting piece; the traction connecting piece is connected with one end of the second traction component; the other end of the second traction part penetrates through the lower portion of a lifting ring of one lifting ring bolt and then is connected with the plug. The plug is connected with the socket. According to the application, the redundant driving devices are arranged, and when one driving device fails, the other driving device can still realize passive falling and / or recovery of the plug.

Description

Technical Field

[0001] The present application relates to the field of aerospace technology, and in particular to a two-stage plug-in / plug-out structure with redundant electric push rods and a working method. Background Art

[0002] The socket of the second-stage unplugging structure is on the second-stage rocket. After the plug of the second-stage unplugging structure is connected with the socket, the electrical circuit can be connected. When separating, the plug and the socket are usually separated quickly and safely through a mechanical separation unplugging structure, an automatic separation unplugging structure or a cold separation unplugging structure to ensure that the second-stage rocket can continue its flight mission smoothly.

[0003] However, the existing mechanical separation plug-in and unplug-in structures usually use ropes or hooks to mechanically pull and separate. The disadvantage is that during the process of rocket filling, if the rocket undergoes static deformation, causing the axial direction of the plug to change, the angle between the mechanical pull-out axial direction and the axial direction of the plug will be offset greater than the allowable range, increasing the risk of mechanical unplugging failure. The existing automatic separation plug-in and unplug-in structures generally rely on actuating devices such as electromagnets to drive the plug out. This type of structure is relatively complex and has high reliability requirements for components. Once a part fails, such as electromagnet failure, it may cause the plug-in and unplug to fail to separate normally, affecting the smooth progress of the rocket launch mission. The existing cold separation plug-in and unplug-in structures usually use actuating devices such as gunpowder to generate thrust to separate the primary and secondary rocket bodies. The use of gunpowder actuating devices will increase the complexity and risk of the system, and the performance of gunpowder is greatly affected by environmental factors. Under extreme environmental conditions such as low temperature and high temperature, the reliability of gunpowder may be reduced, thereby affecting the normal operation of the plug-in and unplug-in structure.

[0004] In addition, the existing mechanical separation and unplugging structure, automatic separation and unplugging structure or cold separation and unplugging structure usually has no redundant unlocking structure. When the unlocking structure is damaged, the passive disengagement and / or recovery of the plug cannot be achieved. Summary of the invention

[0005] The purpose of the present application is to provide a two-stage plug-out structure and working method with redundant electric push rods, which has redundant drive devices. When one drive device fails, the other drive device can still achieve passive plug-out and / or recovery.

[0006] To achieve the above-mentioned purpose, the present application provides a two-level plug-in and unplug-in structure with redundant electric push rods, including: a mounting bracket, at least two driving devices, at least two first pulling components, a pulling connector, a second pulling component, a plug and a socket; wherein the mounting bracket includes: a lifting ring mounting plate, a bracket body and at least one lifting ring bolt; the lower end of the lifting ring mounting plate is connected to one end of the bracket body; the bolt of the lifting ring bolt is detachably connected to the lifting ring mounting plate, the lifting ring of the lifting ring bolt is located on the side of the lifting ring mounting plate facing the other end of the bracket body, and the lifting ring is parallel to the bracket body; at least two driving devices are arranged at the other end of the bracket body; one driving device corresponds to one first pulling component; each driving device is connected to one end of the corresponding first pulling component, and the other end of each first pulling component is connected to the pulling connector; the pulling connector is connected to one end of the second pulling component; the other end of the second pulling component passes through the bottom of the lifting ring of a lifting ring bolt and is connected to the plug; the plug and the socket are detachably connected.

[0007] As above, wherein the driving device is an electric push rod, and one end of the first pulling component is connected to the electric push rod connecting piece of the electric push rod.

[0008] As above, wherein the electric push rod is an explosion-proof electric push rod.

[0009] As above, wherein there are two first pulling parts, namely: a first first pulling part and a second first pulling part; the length of the first first pulling part is equal to the length of the second first pulling part; there are two driving devices, namely: a first driving device and a second driving device; the first driving device is arranged on one side of the other end of the bracket body, the first driving device is connected to one end of the first first pulling part, and the other end of the first first pulling part is connected to the pulling connecting member; the second driving device is arranged on the other side of the other end of the bracket body, the second driving device is connected to one end of the second first pulling part, and the other end of the second first pulling part is connected to the pulling connecting member; the first driving device and the second driving device are parallel to each other.

[0010] As above, wherein the pulling connection member is a triangular plate, at least one first pulling connection hole is provided on the first corner of the triangular plate, at least one second pulling connection hole is provided on the second corner of the triangular plate, and at least one third pulling connection hole is provided on the third corner of the triangular plate; the other end of the first first pulling member is connected to the first pulling connection hole; the other end of the second first pulling member is connected to the second pulling connection hole; one end of the second pulling member is connected to the third pulling connection hole.

[0011] As above, wherein at least one lifting ring connecting hole is provided on the lifting ring mounting plate; the bolt of the lifting ring bolt is connected to the lifting ring connecting hole.

[0012] As above, the lifting ring connection hole is a strip hole, and the length direction of the strip hole is parallel to the bracket body.

[0013] As above, wherein there is one strip-shaped hole.

[0014] As above, the bracket body includes: a first beam, a second beam, a third beam and a fourth beam; wherein one end of the first beam is connected to one end of the second beam, the other end of the second beam is connected to one end of the third beam, the other end of the third beam is connected to one end of the fourth beam, and the other end of the fourth beam is connected to the other end of the first beam; the first driving device is arranged on the first beam and is close to the connection between the first beam and the second beam; the second driving device is arranged on the first beam and is close to the connection between the first beam and the fourth beam; the lower end of the lifting ring mounting plate is connected to the upper end of the third beam, and the lifting ring is parallel to the third beam.

[0015] The present application also provides a working method, which is applied to the above-mentioned two-stage plug-in and unplugging structure with redundant electric push rods. The working method includes the following steps: S1: When the rocket is in a horizontal state, the socket is installed on the rocket body, and the mounting bracket is installed on the erection frame. Each driving device arranged on the mounting bracket is connected to one end of the corresponding first pulling component, and the other end of each first pulling component is connected to the pulling connection piece, and the pulling connection piece is connected to one end of the second pulling component. The other end of the second pulling component passes through the bottom of the lifting eye of an eye bolt and is connected to the plug. After the installation is completed, the rocket body is hoisted onto the erection frame, and the plug and the socket are docked. After the docking is completed, the parameters of the first pulling component and the second pulling component are checked. After the check is completed, S2 is executed; S 2: The rocket is erected in place and lands on the launch pad, completing the process operation. The erection frame is tilted to the preset angle, the socket and the plug are automatically disconnected, and the drive device receives the automatic disconnection signal. If the automatic disconnection signal is a successful automatic disconnection, the drive device runs to drive the second pulling component to recover the plug and send a recovery signal; if the automatic disconnection signal is a failed automatic disconnection, the drive device runs to drive the second pulling component to passively remove the plug, recover the plug, and send a recovery signal; S3: If the recovery signal is successful, the disconnection is completed and the erection frame returns to the level; if the recovery signal is a failure, the erection frame is controlled to move, and the displacement of the erection frame drives the drive device to move, thereby driving the second pulling component to passively remove the plug, recover the plug, and the erection frame returns to the level.

[0016] The beneficial effects achieved by this application are as follows:

[0017] (1) When the plug is automatically electrically disconnected successfully, the secondary disconnection structure with redundant electric push rods of the present application can recover the plug through the driving device; when the plug fails to be automatically electrically disconnected, the secondary disconnection structure with redundant electric push rods of the present application can pull the plug through the driving device to achieve passive disconnection and recovery.

[0018] (2) The two-stage plug-out structure with redundant electric push rods of the present application has redundant drive devices. When one drive device fails, the other drive device can still realize passive plug-out and / or recovery.

[0019] (3) The secondary disconnection structure with redundant electric push rods of the present application can adjust the position of the eye bolt in the eye connection hole so that the angle of the second pulling component is within the allowable range, thereby increasing the success rate of mechanical disconnection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a structural schematic diagram of an embodiment of a two-stage plug-in / plug-out structure with redundant electric push rods;

[0022] Figure 2 A schematic structural diagram of an embodiment of a connection state of a driving device, a first pulling component, a pulling connector, and a second pulling component;

[0023] Figure 3 The figure is a schematic structural diagram of an embodiment of the connection state of the second pulling member, the eye bolt and the plug. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0025] like Figure 1-3As shown, the present application provides a two-stage plug-in / disconnection structure with redundant electric push rods, including: a mounting bracket 1, at least two driving devices 2, at least two first pulling components 3, a pulling connector 4, a second pulling component 5, a plug 6 and a socket 7. The mounting bracket 1 includes: a lifting ring mounting plate 11, a bracket body 12 and at least one lifting ring bolt 13; the lower end of the lifting ring mounting plate 11 is connected to one end of the bracket body 12; the bolt of the lifting ring bolt 13 is detachably connected to the lifting ring mounting plate 11, and the lifting ring of the lifting ring bolt 13 is located on the side of the lifting ring mounting plate 11 facing the other end of the bracket body 12, and the lifting ring is parallel to the bracket body 12. At least two driving devices 4 are arranged at the other end of the bracket body 12; one driving device 4 corresponds to a first pulling component 3; each driving device 2 is connected to one end of the corresponding first pulling component 3, and the other end of each first pulling component 3 is connected to the pulling connector 4; the pulling connector 4 is connected to one end of the second pulling component 5; the other end of the second pulling component 5 passes through the bottom of the lifting eye of a lifting eye bolt 13 and is connected to the plug 6; the plug 6 and the socket 7 are detachably connected.

[0026] Among them, the lower end of the bracket body 12 is connected to the erection frame, but is not limited to being set on the erection frame, and can also be set at other positions of the rocket body where the plug 6 and the socket 7 need to be detached, recovered and protected. The present application is preferably: after the erection frame is assembled, the secondary plug-in and unplug structure with redundant electric push rods is installed on the erection frame. After installation, the minimum distance between the secondary plug-in and unplug structure with redundant electric push rods and the rocket body is 564mm, but is not limited to 564mm. The present application is preferably 564mm, which is sufficient safety distance when the rocket is hoisted.

[0027] Specifically, before the arrow body is launched, the plug 6 and the socket 7 are automatically detached, and the secondary detachment structure with redundant electric push rods of the present application recovers and protects the automatically detached plug 6. In addition, the secondary detachment structure with redundant electric push rods of the present application also serves as a passive detachment device. When the plug 6 and the socket 7 fail to automatically detach before the arrow body is launched, the secondary detachment structure with redundant electric push rods of the present application realizes the passive detachment, recovery and protection of the plug 6.

[0028] The specific number of the driving devices 2 is set according to actual conditions. At least one of the two driving devices 2 serves as a main driving device, and the other driving devices 2 serve as backup driving devices.

[0029] Furthermore, the driving device 2 is an electric push rod, but is not limited to an electric push rod. The present application preferably uses an electric push rod, and one end of the first pulling component 3 is connected to the electric push rod connector 23 of the electric push rod.

[0030] Specifically, the electric push rod can use existing equipment. The stroke of the electric push rod is 600mm, but not limited to 600mm. The preferred stroke of the present application is 600mm.

[0031] Furthermore, the electric push rod is an explosion-proof electric push rod, but is not limited to explosion-proof electric push rods. The present application preferably uses an explosion-proof electric push rod.

[0032] Further, such as Figure 2 As shown, the specific number of the first pulling parts 3 is set according to the actual situation. The present application is preferably: there are two first pulling parts 3, namely: a first first pulling part 31 and a second first pulling part 32. The length of the first first pulling part 31 is equal to or unequal to the length of the second first pulling part 32. The present application is preferably: the length of the first first pulling part 31 is equal to the length of the second first pulling part 32. The specific number of the driving device 2 is set according to the actual situation. The present application is preferably: there are two driving devices 2, namely: a first driving device 21 and a second driving device 22; the first driving device 21 is set on one side of the other end of the bracket body 12, the first driving device 21 is connected to one end of the first first pulling part 31, and the other end of the first first pulling part 31 is connected to the pulling connector 4; the second driving device 22 is set on the other side of the other end of the bracket body 12, the second driving device 22 is connected to one end of the second first pulling part 32, and the other end of the second first pulling part 32 is connected to the pulling connector 4; the first driving device 21 and the second driving device 22 are parallel to each other.

[0033] Specifically, the first drive device 21 and the second drive device 22 are redundant structures. The first drive device 21 and the second drive device 22 are used as the recovery driving force. When the plug 6 and the socket 7 fail to automatically fall off, and the first drive device 21 and the second drive device 22 are both normal or one of the first drive device 21 and the second drive device 22 fails, there is no need to rely on the movement of the installation position (for example: the erecting frame) of the secondary unplugging and unplugging structure with redundant electric push rods. The unplugging and unplugging function can be achieved by the second drive device 22 and / or the first drive device 21, thereby improving the unplugging and unplugging reliability.

[0034] When both the first drive device 21 and the second drive device 22 fail, the first drive device 21 and the second drive device 22 are driven to move by moving the installation position (for example, the erecting frame) of the secondary plug-in / out structure with a redundant electric push rod, the first drive device 21 drives the first first pulling component 31 to move, the second drive device 22 drives the second first pulling component 32 to move, the first first pulling component 31 and the second first pulling component 32 drive the second pulling component 5 to move through the pulling connector 4, and the second pulling component 5 drives the plug 6, thereby realizing the plug-in / out function.

[0035] Furthermore, the first pulling component 3 is a steel wire rope (ie, a steel cable), but is not limited to a steel wire rope. The present application preferably uses a steel wire rope, which can ensure that the breaking force is much greater than the pulling force.

[0036] Specifically, the specific length of the first pulling member 3 is set according to the actual situation. In the case where the erection frame is reversed by 30', the inspection slack of the first pulling member 3 is not less than 200mm.

[0037] Furthermore, the second pulling component 5 is a steel wire rope, but is not limited to a steel wire rope. The present application preferably uses a steel wire rope, which can ensure that the breaking force is much greater than the pulling force.

[0038] Specifically, the specific length of the second pulling member 5 is set according to the actual situation. The present application preferably sets the length of the second pulling member 5 to be the theoretical design length + slack + connection length. The specific values ​​of the theoretical design length, slack and connection length are set according to the actual situation. For example, according to the task requirements, when the pre-chamfer angle of the erection frame is 30', the length of the second pulling member 5 is designed according to the pre-chamfer angle of 30'±10', taking into account the accuracy deviation of the pre-chamfer angle. When the length of the second pulling member 5 is designed according to the pre-chamfer angle of 40', the length of the second pulling member 5 (i.e., the theoretical design length) is 2165mm (wherein the structural length is 1750mm and the pre-chamfer distance is 415mm). After adding 200mm of slack, the length of the second pulling member 5 is 2365mm. In addition, the length of the second pulling member 5 also needs to increase the connection length, i.e., 2365mm+connection length. If the pre-back angle is 20', the length of the second pulling member 5 (i.e., the theoretical design length) is 1960mm (wherein the structural length is 1750mm and the pre-back distance is 210mm). At this time, the slack of the second pulling member 5 is 405mm, and the length of the second pulling member 5 plus the connection length is: 1960mm+405mm+connection length. At this time, the electric push rod can ensure that the plug 6 is separated from the socket 7. The connection length is the length of the connection position between the second pulling member 5, the plug 6 and the pulling connector 4.

[0039] Furthermore, the pulling connector 4 is a wire rope connector, but is not limited to a wire rope connector. The present application preferably uses a wire rope connector.

[0040] Further, the pulling connection member 4 is a triangular plate, and at least one first pulling connection hole 41 is provided on the first corner of the triangular plate, at least one second pulling connection hole 42 is provided on the second corner of the triangular plate, and at least one third pulling connection hole 43 is provided on the third corner of the triangular plate; the other end of the first first pulling component 31 is connected to the first pulling connection hole 41; the other end of the second first pulling component 32 is connected to the second pulling connection hole 42; and one end of the second pulling component 5 is connected to the third pulling connection hole 43. The pulling connection member 4 can ensure that when the driving device 2 pulls the first pulling component 3 (i.e., the first first pulling component 31 and the second first pulling component 32), it is along the direction of the first pulling component 3 to prevent the first pulling component 3 from being subjected to shear force.

[0041] Specifically, the specific shape of the pulling connection member 4 is set according to the actual situation. The preferred shape of the present application is: a triangular plate, but it is not limited to a triangular plate, and can also be a rectangular plate, a hexagonal plate, an irregular plate, or other plates. The number of pulling connection holes on the pulling connection member 4 is equal to the total number of the first pulling parts 3 and the sum of the number of the second pulling parts 5. One first pulling part 3 corresponds to one pulling connection hole, and one second pulling part 5 corresponds to one pulling connection hole. The present application preferably has three pulling connection holes, namely, a first pulling connection hole 41, a second pulling connection hole 42, and a third pulling connection hole 43.

[0042] Further, as an embodiment, one end of the first pulling component 3 passes through the electric push rod connecting member 23 of the driving device 2 and is connected to a part of the first pulling component 3 that does not pass through the driving device 2 through a wire rope clamp 33; the other end of the first pulling component 3 passes through the pulling connection hole of the pulling connection member 4 and is connected to a part of the first pulling component 3 that does not pass through the pulling connection hole of the pulling connection member 4 through a wire rope clamp 33.

[0043] Specifically, the first pulling component 3 is not limited to being connected to the driving device 2 and the pulling connector 4 through the wire rope clamp 33, and other connection methods may also be used.

[0044] Furthermore, at least one wire rope clamp 51 is provided on the second pulling member 5 for fixing the wire rope. The specific number of the wire rope clamps 51 is set according to the actual situation, and two are preferred in this application.

[0045] Furthermore, at least one lifting ring connecting hole 111 is provided on the lifting ring mounting plate 11 ; the bolt of the lifting ring bolt 13 is connected to the lifting ring connecting hole 111 .

[0046] Furthermore, the eyelet connection hole 111 is a strip-shaped hole, and the length direction of the strip-shaped hole is parallel to the bracket body 12 .

[0047] Specifically, the specific shape of the lifting ring connection hole 111 is set according to the actual situation. The present application preferably uses a bar-shaped hole, but is not limited to a bar-shaped hole and can also be a hole of other shapes.

[0048] Further, as an embodiment, there is one strip-shaped hole.

[0049] Specifically, Figure 3 As shown, by adjusting the position of the eyebolt 13 in the strip hole, the second pulling member 5 can be changed in direction. When the frame is erected and then tilted 30', the position of the eyebolt 13 in the strip hole is adjusted so that the first pulling member 3 and the second pulling member 5 are roughly located at the center of the eyebolt 13 after being straightened. At this time, according to the designed distance from the eyebolt 13 to the socket 7, it can be ensured that when the second pulling member 5 is in the ring connection hole 111, the angle of the second pulling member 5 is not greater than 5°, that is, the angle of the second pulling member 5 is within the allowable range, thereby increasing the success rate of mechanical removal.

[0050] Among them, the specific value of the allowable range is set according to actual conditions. The present application preferably has the following conditions: if the angle of the second pulling component 5 is not greater than 5°, it is within the allowable range; if the angle of the second pulling component 5 is greater than or equal to 5°, it is outside the allowable range.

[0051] Furthermore, as another embodiment, when there are multiple lifting ring connection holes 111, by replacing the position of the lifting ring bolt 13 in the multiple lifting ring connection holes 111, for example: replacing the lifting ring bolt 13 from the first lifting ring connection hole 111 to the second lifting ring connection hole 111, the angle of the second pulling component 5 is within the allowable range, thereby increasing the success rate of mechanical removal.

[0052] Furthermore, the eyebolt 13 is an M20 eyebolt, but is not limited to the M20 eyebolt. The present application preferably uses an M20 eyebolt, wherein M represents ordinary thread and 20 represents that the nominal diameter of the thread is 20 mm.

[0053] Furthermore, the bracket body 12 includes: a first beam, a second beam, a third beam and a fourth beam; wherein, one end of the first beam is connected to one end of the second beam, the other end of the second beam is connected to one end of the third beam, the other end of the third beam is connected to one end of the fourth beam, and the other end of the fourth beam is connected to the other end of the first beam; the first driving device 21 is arranged on the first beam and is close to the connection between the first beam and the second beam; the second driving device 22 is arranged on the first beam and is close to the connection between the first beam and the fourth beam; the lower end of the lifting ring mounting plate 11 is connected to the upper end of the third beam, and the lifting ring is parallel to the third beam.

[0054] Furthermore, a bracket connecting plate is also provided on the third beam, and the lower end of the eye mounting plate 11 is connected to the bracket connecting plate.

[0055] Furthermore, the lifting ring mounting plate 11 includes: a first mounting plate and a second mounting plate; one end of the first mounting plate is connected to one end of the second mounting plate, and after the connection, there is a mounting angle between the first mounting plate and the second mounting plate; the second mounting plate is connected to the bracket connecting plate; the lifting ring connecting hole 111 is set on the first mounting plate.

[0056] Specifically, the eye mounting plate 11 is an integrated structure or a separate structure, and the present application prefers an integrated structure.

[0057] Furthermore, the specific value of the installation angle is set according to actual conditions, and the preferred value in this application is 90°.

[0058] The present application provides a working method, which is applied to the above-mentioned two-stage plug-out structure with redundant electric push rods, and the working method comprises the following steps:

[0059] S1: When the rocket is in a horizontal state, the socket is installed on the rocket body, and the mounting bracket is installed on the erecting frame. Each driving device arranged on the mounting bracket is connected to one end of the corresponding first pulling component, and the other end of each first pulling component is connected to the pulling connecting piece, and the pulling connecting piece is connected to one end of the second pulling component. The other end of the second pulling component is connected to the plug after passing through the bottom of a lifting eye of an eye bolt. After the installation is completed, the rocket body is hoisted onto the erecting frame, and the plug is docked with the socket. After the docking is completed, the parameters of the first pulling component and the second pulling component are checked. After the check is completed, S2 is executed.

[0060] Specifically, when both the first pulling member and the second pulling member are steel wire ropes, the slack of the first pulling member and the second pulling member is checked. The existing method can be used to check the parameters of the first pulling member and the second pulling member, so it is not repeated here.

[0061] S2: The rocket is erected and landed on the launch pad, completing the process operation. After the erection frame is erected, it is tilted to the preset angle, the socket and the plug are automatically disconnected, and the drive device receives the automatic disconnection signal. If the automatic disconnection signal is a successful automatic disconnection, the drive device runs, drives the second pulling component to recycle the plug, and sends a recovery signal; if the automatic disconnection signal is a failed automatic disconnection, the drive device runs, drives the second pulling component to passively disconnect the plug, recycles the plug, and sends a recovery signal.

[0062] Specifically, the specific value of the preset foresight angle is set according to the actual situation, and the preferred value in this application is: 30'. When the driving device is an electric push rod, the electric push rod is withdrawn, thereby retracting the first pulling member and the second pulling member, and the second pulling member retracts the plug.

[0063] S3: If the recovery signal is successful, the plugging is removed and the erection frame returns to the horizontal position; if the recovery signal is unsuccessful, the erection frame is controlled to move, and the displacement of the erection frame drives the driving device to move, thereby driving the second pulling component to passively remove the plug, and recover the plug, and the erection frame returns to the horizontal position.

[0064] The beneficial effects achieved by this application are as follows:

[0065] (1) When the plug is automatically electrically disconnected successfully, the secondary disconnection structure with redundant electric push rods of the present application can recover the plug through the driving device; when the plug fails to be automatically electrically disconnected, the secondary disconnection structure with redundant electric push rods of the present application can pull the plug through the driving device to achieve passive disconnection and recovery.

[0066] (2) The two-stage plug-out structure with redundant electric push rods of the present application has redundant drive devices. When one drive device fails, the other drive device can still realize passive plug-out and / or recovery.

[0067] (3) The secondary disconnection structure with redundant electric push rods of the present application can adjust the position of the eye bolt in the eye connection hole so that the angle of the second pulling component is within the allowable range, thereby increasing the success rate of mechanical disconnection.

[0068] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the scope of protection of the present application is intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application. Obviously, those skilled in the art may make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the protection scope of the present application and its equivalent technology, the present application is also intended to include these modifications and variations.

Claims

1. A two-stage plug-in / plug-out structure with redundant electric push rods, characterized in that: include: A mounting bracket, at least two drive devices, at least two first pulling components, a pulling connector, a second pulling component, a plug and a socket; The mounting bracket comprises: a lifting ring mounting plate, a bracket body and at least one lifting ring bolt; the lower end of the lifting ring mounting plate is connected to one end of the bracket body; the bolt of the lifting ring bolt is detachably connected to the lifting ring mounting plate, the lifting ring of the lifting ring bolt is located on the side of the lifting ring mounting plate facing the other end of the bracket body, and the lifting ring is parallel to the bracket body; At least two driving devices are arranged at the other end of the bracket body; one driving device corresponds to one first pulling component; each driving device is connected to one end of the corresponding first pulling component, and the other end of each first pulling component is connected to the pulling connector; The pulling connector is connected to one end of the second pulling component; the other end of the second pulling component passes through the bottom of a lifting eye of an eye bolt and is connected to the plug; The plug and the socket are detachably connected.

2. The two-stage plug-in / plug-out structure with redundant electric push rods according to claim 1, characterized in that: The driving device is an electric push rod, and one end of the first pulling component is connected to the electric push rod connecting piece of the electric push rod.

3. The two-stage plug-in / plug-out structure with redundant electric push rods according to claim 2, characterized in that: The electric push rod is an explosion-proof electric push rod.

4. The two-stage plug-in / plug-out structure with redundant electric push rods according to claim 1, characterized in that: There are two first pulling components, namely: a first first pulling component and a second first pulling component; the length of the first first pulling component is equal to the length of the second first pulling component; There are two driving devices, namely: a first driving device and a second driving device; The first driving device is arranged on one side of the other end of the bracket body, the first driving device is connected to one end of the first first pulling component, and the other end of the first first pulling component is connected to the pulling connecting piece; The second driving device is arranged at the other side of the other end of the bracket body, the second driving device is connected to one end of the second first pulling component, and the other end of the second first pulling component is connected to the pulling connecting piece; The first drive device and the second drive device are parallel to each other.

5. The two-stage plug-in / plug-out structure with redundant electric push rods according to claim 4, characterized in that: The pulling connection member is a triangular plate, wherein at least one first pulling connection hole is arranged on a first corner of the triangular plate, at least one second pulling connection hole is arranged on a second corner of the triangular plate, and at least one third pulling connection hole is arranged on a third corner of the triangular plate; The other end of the first first pulling member is connected to the first pulling connection hole; The other end of the second first pulling member is connected to the second pulling connection hole; One end of the second pulling member is connected to the third pulling connection hole.

6. The two-stage plug-in / plug-out structure with redundant electric push rods according to claim 1, characterized in that: At least one lifting ring connecting hole is arranged on the lifting ring mounting plate; the bolt of the lifting ring bolt is connected with the lifting ring connecting hole.

7. The two-stage plug-in / plug-out structure with redundant electric push rods according to claim 6, characterized in that: The lifting ring connection hole is a strip hole, and the length direction of the strip hole is parallel to the bracket body.

8. The two-stage plug-in / plug-out structure with redundant electric push rods according to claim 7, characterized in that: There is one strip hole.

9. The two-stage plug-in / plug-out structure with redundant electric push rods according to claim 7, characterized in that: The support body includes: a first beam, a second beam, a third beam and a fourth beam; One end of the first beam is connected to one end of the second beam, the other end of the second beam is connected to one end of the third beam, the other end of the third beam is connected to one end of the fourth beam, and the other end of the fourth beam is connected to the other end of the first beam; The first driving device is disposed on the first beam and close to the connection between the first beam and the second beam; The second driving device is disposed on the first beam and close to the connection between the first beam and the fourth beam; The lower end of the lifting ring mounting plate is connected to the upper end of the third beam, and the lifting ring is parallel to the third beam.

10. A working method, characterized in that: The two-stage plug-in / out structure with redundant electric push rods as claimed in any one of claims 1 to 9 comprises the following steps: S1: When the rocket is in a horizontal state, the socket is installed on the rocket body, the mounting bracket is installed on the erection frame, each driving device arranged on the mounting bracket is connected to one end of the corresponding first pulling component, the other end of each first pulling component is connected to the pulling connection piece, the pulling connection piece is connected to one end of the second pulling component, the other end of the second pulling component is connected to the plug after passing through the bottom of the lifting eye of an eye bolt, after the installation is completed, the rocket body is hoisted onto the erection frame, the plug and the socket are docked, after the docking is completed, the parameters of the first pulling component and the second pulling component are checked, after the check is completed, S2 is executed; S2: The rocket is erected and placed on the launch pad, the process operation is completed, the erector frame is tilted to the preset angle, the socket and the plug are automatically disconnected, and the drive device receives the automatic disconnection signal. If the automatic disconnection signal indicates that the automatic disconnection is successful, the drive device runs, drives the second pulling component to recycle the plug, and sends a recovery signal; if the automatic disconnection signal indicates that the automatic disconnection fails, the drive device runs, drives the second pulling component to passively disconnect the plug, recycles the plug, and sends a recovery signal; S3: If the recovery signal is successful, the plugging is removed and the erection frame returns to the horizontal position; if the recovery signal is unsuccessful, the erection frame is controlled to move, and the displacement of the erection frame drives the driving device to move, thereby driving the second pulling component to passively remove the plug, and recover the plug, and the erection frame returns to the horizontal position.

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