CN117963175A - Repeated locking release mechanism - Google Patents
Repeated locking release mechanism Download PDFInfo
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- CN117963175A CN117963175A CN202410254168.9A CN202410254168A CN117963175A CN 117963175 A CN117963175 A CN 117963175A CN 202410254168 A CN202410254168 A CN 202410254168A CN 117963175 A CN117963175 A CN 117963175A
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- unlocking
- locking
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- repeated
- assembly
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- 230000007246 mechanism Effects 0.000 title claims abstract description 27
- 230000000452 restraining effect Effects 0.000 claims abstract description 14
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention provides a repeated locking and releasing mechanism which comprises a driving assembly (1), a lock hook (2), a constraint bracket (3), an unlocking device assembly (4), a bearing (5) and a supporting base (6); the restraining bracket (3) is connected with a main load on the device through a mechanical interface, and the unlocking device assembly (4) comprises two mutually orthogonal unlocking devices and is fixed on two side surfaces of the restraining bracket (3); the driving assembly (1), the bearing (5) and the unlocking device assembly (4) are all connected with the supporting base (6) through mechanical interfaces, and the supporting base (6) is fixed on the aircraft carrier; when the unlocking device assembly (4) performs locking or unlocking operation, the driving assembly (1) receives a control signal to generate output torque, and the locking hook (2) and the constraint bracket (3) are driven to rotate relatively to lock or separate main loads on the device.
Description
Technical Field
The invention belongs to the technical field of space structure mechanisms, and particularly relates to a high-rigidity repeated locking and releasing mechanism for a space structure.
Background
Large structures on the aircraft, such as large antennas and vibration isolation platforms, are required to be compressed to maintain a certain fundamental frequency in the process of transmitting and transferring tracks due to large size and inertia, so that the aircraft meets the environmental requirements. The acceleration overload magnitude difference is large in the ascending active section of the aircraft and the in-orbit track change process, the bearable property of the load to the input vibration is considered, and the two have different demands on the working capacity of the locking release mechanism.
Therefore, a high-rigidity, lightweight, reliable and repeatable locking mechanism capable of adapting to the locking requirements of different working sections is needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a repeated locking and releasing mechanism which comprises a driving assembly (1), a locking hook (2), a constraint bracket (3), an unlocking device assembly (4), a bearing (5) and a supporting base (6);
the restraining bracket (3) is connected with a main load on the device through a mechanical interface, and the unlocking device assembly (4) comprises two mutually orthogonal unlocking devices and is fixed on two side surfaces of the restraining bracket (3);
The driving assembly (1), the bearing (5) and the unlocking device assembly (4) are all connected with the supporting base (6) through mechanical interfaces, and the supporting base (6) is fixed on the aircraft carrier;
When the unlocking device assembly (4) performs locking or unlocking operation, the driving assembly (1) receives a control signal to generate output torque, and the locking hook (2) and the constraint bracket (3) are driven to rotate relatively to lock and separate main loads on the device.
In one possible implementation, the drive assembly (1) comprises a motor (11), a harmonic reducer (12), an output stub shaft (13), an angular contact bearing pair (14), a motor housing (15), a rotary transformer (16);
And an output shaft of the motor (11) is connected with the harmonic speed reducer (12) to perform primary speed reduction so as to reduce the rotating speed and improve the torque.
In one possible implementation, the output end of the harmonic reducer (12) is connected with the end part of an output short shaft (13) through a mechanical interface, and the outer ring of the output short shaft (13) is matched with the inner ring of the angular contact bearing pair (14) and is supported on a motor shell (15) through the outer ring of the angular contact bearing pair (14);
A rotary transformer (16) is arranged in the axial direction of the output short shaft (13) and is used for feeding back the rotation angle of the driving assembly (1) in real time.
In one possible implementation, one side of the latch hook (2) near the end of the driving assembly (1) is fixedly connected with the output short shaft (13) of the driving assembly (1), and the other side is matched with a bearing on the supporting base (6).
In one possible implementation, the restraint bracket (3) comprises a support frame (32) fixedly connected with an on-board main load connection and a lock hook shaft (31) for being matched and locked and fixed with the lock hook (2).
In one possible implementation manner, the latch hook (2) is matched with a latch hook shaft on the constraint bracket (3) in the rotating process, so that the functions of repeated locking and releasing are achieved.
In one possible implementation, the controller controls the motor to stall according to a feedback value of the rotary transformer (16) when the rotation amount of the latch hook (2) reaches a predetermined value, the latch hook and the latch hook shaft are locked in place.
In one possible implementation, the unlocking means assembly (4) comprises two mutually orthogonal unlocking means and is fixed to two sides of the constraining support (3), comprising:
The unlocking device assembly (4) is used for restraining the freedom degrees of two directions through two unlocking fixing parts (41) and unlocking separating parts (42) which are arranged in an orthogonal mode.
In one possible implementation, the main load is provided with N repeated locking and releasing mechanisms in the circumferential direction for constraining the degrees of freedom in multiple directions, where N is an integer greater than 1.
In one possible implementation, the restraining bracket (3) and the supporting base (6) are provided with weight-reducing grooves for improving the rigidity ratio of the mechanism.
Compared with the prior art, the invention at least comprises the following beneficial effects:
The invention can reliably lock the main load on the device at the initial stage of emission so as to adapt to the influence of the mechanical environment of the ascending section; in the process of the track flight, the device can realize the repeated locking and unlocking release of the main load, has the technical characteristics of strong load resistance, variable locking rigidity, reliable locking and the like, and is particularly suitable for the repeated locking and releasing of large inertia structural members including large vibration isolation platforms and large antennas.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of the structural composition of a high-rigidity repeated locking and releasing mechanism for a space structure;
FIG. 2 is a schematic diagram of a shafting structure of a driving assembly according to an exemplary embodiment of the present invention;
FIG. 3 is a schematic view of the structural composition of a restraint bracket provided in an exemplary embodiment of the present invention;
FIG. 4 is a schematic diagram of the structure of an unlocking device according to an exemplary embodiment of the present invention;
fig. 5 is a schematic view of a latch hook mounting structure according to an exemplary embodiment of the present invention.
Illustration of:
1-driving components, 2-lock hooks, 3-constraint brackets, 4-unlocking device components, 5-bearings and 6-supporting bases; 11-motors, 12-harmonic reducers, 13-output short shafts, 14-angular contact bearing pairs, 15-motor shells and 16-rotary transformers; 31-a latch hook shaft and 32-a supporting frame; 41-unlocking fixing portion, 42-unlocking separating portion.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
The example shown in fig. 1 provides a high-rigidity repeated locking and releasing mechanism for a space structure, which comprises a driving assembly 1, a locking hook 2, a restraining bracket 3, an unlocking device assembly 4, a bearing 5 and a supporting base 6. As shown in fig. 2, the drive assembly 1 includes a motor 11, a harmonic reducer 12, an output stub shaft 13, an angular contact bearing pair 14, a motor housing 15, and a resolver 16. As shown in fig. 3, the restraining bracket 3 includes a hook shaft 31 and a support frame 22. As shown in fig. 4, the unlocking device assembly 4 includes an unlocking fixing portion 41 and an unlocking separating portion 42.
As shown in fig. 2, an output shaft of a motor 11 in the driving assembly 1 is connected to a harmonic reducer 12 for primary speed reduction to reduce rotation speed and improve torque, an output end of the harmonic reducer 12 is connected with an end part of an output short shaft 13 through a mechanical interface, an outer ring of the output short shaft 13 is matched with an inner ring of an angular contact bearing pair 14 and is supported on a motor shell 15 through an outer ring of the angular contact bearing pair 14, and a rotary transformer 16 is axially arranged on the output short shaft 13 to feed back the rotation angle of the driving assembly in real time.
As shown in fig. 1,3, 4 and 5, one end of the supporting frame 32 forms binding connection with a main load on the device through a mechanical interface, the other end of the supporting frame is fixed with the unlocking device assembly 4, the unlocking device assembly 4 consists of two mutually orthogonal unlocking devices, each unlocking device can be separated into an unlocking fixing part 41 and an unlocking separating part 42 at a connecting surface, the unlocking fixing part 41 is connected with the supporting base 6, and the unlocking separating part 42 is connected with the constraint bracket 3; one end of the lock hook 2 in the axial direction is connected with the driving component 1 through a mechanical interface, the other end of the lock hook is matched with the bearing 5, and the driving component 1 and the bearing 5 are fixed on the supporting base 6; the latch hook shaft 31 is bound on the reinforcing rib plate of the support frame 32 through a mechanical interface, and when the latch hook 2 rotates to a specific angle, the latch hook shaft 31 is locked and matched with the latch hook shaft 31 to limit the movement of the constraint bracket 3, so that the aim of main load on the constraint device is fulfilled; the driving assembly, the bearing and the unlocking device assembly are connected with the supporting base through mechanical interfaces, and the supporting base is fixed on the aircraft carrier.
The structure of the present application will be further described in detail below in connection with the working principle of the present application. In order to restrict the entire degrees of freedom of the main load on the aircraft, a plurality of repeated locking and releasing mechanisms are arranged on the aircraft in the circumferential direction of the main load and are fixedly connected with the load through the restricting bracket 3, it should be noted that the number of the repeated locking and releasing mechanisms is not limited, and may be appropriately increased or decreased according to actual situations and requirements, and is exemplified by four in the present embodiment. In the ascending active section of the aircraft, the mechanism needs to bear larger inertia force due to larger acceleration, and the constraint bracket 3 is reliably compressed through the high-rigidity unlocking device assembly 4, so that the connection rigidity between the constraint bracket 3 and the support base 6 is ensured; when the aircraft is in an on-orbit flight section, the structural vibration level is reduced, the original constraint needs to be unlocked in order to change the working posture of the main load on the aircraft, and at the moment, the unlocking device component 4 receives a control instruction and is separated into an unlocking fixing part 41 and an unlocking separating part 42 at the connecting surface; after the working posture of the main load on the device is in place and the prescribed action is completed, the controller sends a control instruction, the driving assembly 1 drives the lock hook 2 to rotate, when the preset rotation angle is reached, the controller controls the motor 11 to stop rotating according to the feedback quantity of the rotary transformer 16, and at the moment, the lock hook 2 and the lock hook shaft 31 generate locking fit to retrain the main load on the device.
The invention can reliably lock the main load on the device at the initial stage of emission so as to adapt to the influence of the mechanical environment of the ascending section; in the process of the track flight, the device can realize the repeated locking and unlocking release of the main load, has the technical characteristics of strong load resistance, variable locking rigidity, reliable locking and the like, and is particularly suitable for the repeated locking and releasing of large inertia structural members including large vibration isolation platforms and large antennas.
The foregoing describes specific embodiments of the present application. It is to be understood that the application is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the application. The embodiments of the application and the features of the embodiments may be combined with each other arbitrarily without conflict.
Claims (10)
1. The repeated locking and releasing mechanism is characterized by comprising a driving assembly (1), a lock hook (2), a constraint bracket (3), an unlocking device assembly (4), a bearing (5) and a supporting base (6);
the restraining bracket (3) is connected with a main load on the device through a mechanical interface, and the unlocking device assembly (4) comprises two mutually orthogonal unlocking devices and is fixed on two side surfaces of the restraining bracket (3);
The driving assembly (1), the bearing (5) and the unlocking device assembly (4) are all connected with the supporting base (6) through mechanical interfaces, and the supporting base (6) is fixed on the aircraft carrier;
When the unlocking device assembly (4) performs locking or unlocking operation, the driving assembly (1) receives a control signal to generate output torque, and the locking hook (2) and the constraint bracket (3) are driven to rotate relatively to lock or separate main loads on the device.
2. A repeated lock release mechanism according to claim 1, wherein the drive assembly (1) comprises a motor (11), a harmonic reducer (12), an output stub shaft (13), an angular contact bearing pair (14), a motor housing (15), a resolver (16);
And an output shaft of the motor (11) is connected with the harmonic speed reducer (12) to perform primary speed reduction so as to reduce the rotating speed and improve the torque.
3. A repeated locking release mechanism according to claim 2, wherein the output end of the harmonic reducer (12) is connected to the end of an output stub shaft (13) through a mechanical interface, the outer ring of the output stub shaft (13) is fitted with the inner ring of the angular bearing pair (14) and is supported on the motor housing (15) through the outer ring of the angular bearing pair (14);
A rotary transformer (16) is arranged in the axial direction of the output short shaft (13) and is used for feeding back the rotation angle of the driving assembly (1) in real time.
4. A repeated lock release mechanism according to claim 1, wherein one side of the locking hook (2) near the end of the drive assembly (1) is fixedly connected to the output stub shaft (13) of the drive assembly (1) and the other side is fitted to a bearing on the support base (6).
5. A re-locking release mechanism according to claim 1, characterized in that the restraining bracket (3) comprises a support bracket (32) for fixedly connecting with a main load on the device, and a locking hook shaft (31) for locking and fixing with the locking hook (2).
6. The repeated locking and releasing mechanism according to claim 1 or 5, wherein the locking hook (2) is matched with a locking hook shaft on the constraint bracket (3) in the rotating process, so that the repeated locking and releasing functions are achieved.
7. A repeated lock release mechanism according to claim 6, wherein the controller controls the motor to stall in dependence on the feedback value of the resolver (16) when the amount of rotation of the shackle (2) reaches a predetermined value, the shackle being locked in place with the shackle shaft.
8. A repeated lock release mechanism according to claim 1, wherein said unlocking means (4) comprises two mutually orthogonal unlocking means and is fixed to both sides of the restraining bracket (3), comprising:
The unlocking device assembly (4) is used for restraining the freedom degrees of two directions through two unlocking fixing parts (41) and unlocking separating parts (42) which are arranged in an orthogonal mode.
9. The multiple lock release mechanism of claim 8, wherein the primary load is N multiple lock release mechanisms in a circumferential direction for constraining multiple degrees of freedom, wherein N is an integer greater than 1.
10. A repeated lock release mechanism according to claim 1, wherein the restraining bracket (3) and the support base (6) are provided with weight-reducing grooves for increasing the stiffness ratio of the mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410254168.9A CN117963175A (en) | 2024-03-06 | 2024-03-06 | Repeated locking release mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410254168.9A CN117963175A (en) | 2024-03-06 | 2024-03-06 | Repeated locking release mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117963175A true CN117963175A (en) | 2024-05-03 |
Family
ID=90849470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410254168.9A Pending CN117963175A (en) | 2024-03-06 | 2024-03-06 | Repeated locking release mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117963175A (en) |
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2024
- 2024-03-06 CN CN202410254168.9A patent/CN117963175A/en active Pending
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