Separating and avoiding integrated large-bearing high-reliability locking and releasing device

Abstract

A separating and avoiding integrated large-bearing high-reliability locking and releasing device comprises an upper end fixing adapter, a grooving bolt assembly, two side pressing plate assemblies and a bottom fixing seat. The two side pressing plate assemblies are oppositely fixed to the bottom fixing base, and the upper end fixing adapter base is fixed to an upper end opening formed by the two side pressing plate assemblies. The grooving bolt assembly penetrates through the through holes of the two side pressing plate assemblies, and a weakening groove is machined in the portion, located between the two side pressing plate assemblies, of the grooving bolt assembly. The upper end fixing adapter is fixedly connected with the optical pointing mechanism, and the bottom fixing base is fixedly connected with a satellite deck; and after reaching a preset orbit, the grooving bolt assembly pulls off the two side pressing plate assemblies to be opened towards the two sides, so that release between the optical pointing mechanism and the satellite cabin plate is realized. According to the invention, the locking and releasing device has separation and avoidance integration, so that a non-firer type locking and releasing device can meet the task capability of integration of impact resistance, locking and avoidance functions with a small single-machine total weight.

Description

Technical Field

[0001] The invention belongs to the field of spacecraft optical mechanism design and relates to a separation and avoidance integrated large-load and high-reliability locking and releasing device. Background Art

[0002] Due to the low stiffness of the shaft system and the small self-locking torque, the optical pointing mechanism needs to be locked before launching into orbit to resist vibration during the launch process; after entering orbit, it needs to be unlocked and deployed to ensure the normal rotation function of the mechanism. For traditional limited-angle rotation mechanisms, the extreme position locking method can be used to lock, and after unlocking in orbit, it can be unlocked and deployed away from the locked position. For mechanisms that require 360° continuous rotation, there is no extreme position, and active avoidance is required after the locking release device is unlocked, and a certain safety distance must be actively left between the fixed part and the rotating part to ensure the normal rotation of the mechanism. The traditional extreme position locking method is no longer applicable. Summary of the invention

[0003] The technical problem solved by the present invention is to overcome the deficiencies of the prior art and to provide a separation and avoidance integrated large-load and high-reliability locking and releasing device.

[0004] The solution of the present invention is:

[0005] A separation and avoidance integrated large-load and high-reliability locking and releasing device, comprising an upper fixed adapter seat, a slotted bolt assembly, two side pressure plate assemblies and a bottom fixed seat;

[0006] The two side pressure plate assemblies are positioned opposite to each other and fixed on the bottom fixing seat, and the upper fixed adapter seat is fixed on the upper opening formed by the two side pressure plate assemblies;

[0007] The slotted bolt assembly includes a breaker, a slotted bolt, a gasket I, a gasket II, a pad, a support sleeve and a locking nut; through holes are opened at relative positions on the upper parts of the two side pressure plate assemblies, and the slotted bolt passes through the through holes. The breaker is sleeved on the side of the slotted bolt close to the bolt head, and a gasket I is arranged between the breaker and the adjacent side pressure plate assembly. The support sleeve and the pad are sequentially sleeved on the section of the slotted bolt extending out of the two side pressure plate assemblies from back to front, and a gasket II is arranged between the support sleeve and the adjacent side pressure plate assembly. The locking nut is located at the front end of the pad, which is used to lock the pad, support sleeve and gasket II; the bolt head side is defined as the rear end.

[0008] Preferably, a weakening groove is formed in the portion of the slotted bolt located between the two side pressure plate assemblies.

[0009] Preferably, the grooved bolt assembly also includes a capture cap, which is mounted on the side pressure plate assembly close to the bolt head and covers the bolt head, the expander and the gasket I of the grooved bolt assembly.

[0010] Preferably, the two side pressure plate assemblies are respectively a side pressure plate assembly I and a side pressure plate assembly II; the side pressure plate assembly I includes an elastic leaf spring I, a loading sheet I, a loading sheet II, and a side pressure plate I, and the side pressure plate assembly II includes an elastic leaf spring II, a loading sheet III, a loading sheet IV, and a side pressure plate II;

[0011] The side pressure plate I and the side pressure plate II are positioned opposite to each other, the bottoms are in contact with the bottom fixing seat, and the two side pressure plates are flush with the outer surfaces of the bottom fixing seat respectively;

[0012] The elastic leaf spring I is located outside the side pressure plate I and the bottom fixing seat, and the upper end of the elastic leaf spring I is fixed to the outside of the side pressure plate I through the loading sheet I, and the lower end of the elastic leaf spring I is fixed to the outside of the bottom fixing seat through the loading sheet II;

[0013] The elastic leaf spring II is located outside the side pressure plate II and the bottom fixing seat, and the upper end of the elastic leaf spring II is fixed to the outside of the side pressure plate II through the loading sheet III, and the lower end of the elastic leaf spring II is fixed to the outside of the bottom fixing seat through the loading sheet IV.

[0014] Preferably, tooth surfaces are provided on both sides of the lower end of the upper fixed adapter seat, and saw teeth are processed on the upper ends of the side pressure plates I and II, and the saw teeth cooperate with the tooth surfaces of the lower end of the upper fixed adapter seat to achieve a fixed connection.

[0015] Preferably, the bottom of the side pressure plate I and the side pressure plate II are both provided with protrusions, and the corresponding positions of the bottom fixing seats are provided with grooves. After being locked in place, the protrusions are embedded in the corresponding grooves, and the size of the grooves is larger than the size of the protrusions.

[0016] Preferably, bosses are provided on the opposite surfaces of the side pressure plate I and the side pressure plate II, and after being locked in place, the boss of the side pressure plate I contacts the boss of the side pressure plate II.

[0017] An application method of a separation and avoidance integrated large-load high-reliability locking and releasing device, comprising:

[0018] The upper fixed adapter is fixedly connected to the optical pointing mechanism by bolts, and the bottom fixed base is fixedly connected to the satellite cabin plate by bolts to achieve locking;

[0019] After reaching the predetermined orbit, the breaker breaks the slotted bolts, and the two side pressure plate assemblies open to both sides, disconnecting the fixed connection with the upper fixed adapter, thereby releasing the optical pointing mechanism and the satellite cabin panel.

[0020] The beneficial effects of the present invention compared with the prior art are:

[0021] The present invention proposes a combination of a slotted bolt and a side pressure plate to enable the locking and releasing device to have the ability to resist axial and radial impact loads; the present invention adopts a combination of an expander and a leaf spring to enable the locking and releasing device to have an integrated separation and avoidance function; the present invention uses a limiting structure design to transfer the force of the locking and releasing device to the structural member instead of the elastic leaf spring, thereby enhancing the bearing capacity of the unlocking and releasing device, thereby meeting the mechanical impact load during the launching process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a separation and avoidance integrated large-load and high-reliability locking and releasing device of the present invention;

[0023] Figure 2 The figure is a schematic diagram of the appearance of a separation and avoidance integrated large-load-bearing and high-reliability locking and releasing device of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the embodiments.

[0025] In order to realize the connection between the locking release device and the optical pointing mechanism, the present invention designs an upper fixed adapter, which is fixedly connected to the optical pointing mechanism by bolts. The side pressure plate assembly I and the side pressure plate assembly II are fixedly connected to the upper fixed adapter by the slotted bolt assembly, and the bottoms of the side pressure plate assembly I and the side pressure plate assembly II are respectively fixedly connected to the bottom fixed seat, and the bottom fixed seat is fixedly connected to the satellite cabin plate by bolts.

[0026] like Figure 1 As shown, a separation and avoidance integrated large-load-bearing high-reliability locking and releasing device of the present invention includes an upper end fixed adapter seat 1, a grooved bolt assembly, a side pressure plate assembly I, a side pressure plate assembly II and a bottom fixed seat 2.

[0027] The side pressure plate assembly I includes an elastic leaf spring I11, a loading sheet I12, a loading sheet II 13, and a side pressure plate I14, and the side pressure plate assembly II includes an elastic leaf spring II 15, a loading sheet III 16, a loading sheet IV 17, and a side pressure plate II 18.

[0028] The side pressure plate I14 and the side pressure plate II 18 are positioned opposite to each other, with their bottoms in contact with the bottom fixing seat 2, and the two side pressure plates are flush with the outer surfaces of the bottom fixing seat respectively.

[0029] The elastic leaf spring I11 is located outside the side pressure plate I14 and the bottom fixing seat 2, and the upper end of the elastic leaf spring I11 is fixed to the outside of the side pressure plate I14 through the loading sheet I12 and screws, and the lower end of the elastic leaf spring I11 is fixed to the outside of the bottom fixing seat 2 through the loading sheet II 13 and screws. The elastic leaf spring II15 is located outside the side pressure plate II 18 and the bottom fixing seat 2, and the upper end of the elastic leaf spring II 15 is fixed to the outside of the side pressure plate II 18 through the loading sheet III 16 and screws, and the lower end of the elastic leaf spring II 15 is fixed to the outside of the bottom fixing seat 2 through the loading sheet IV and screws 17.

[0030] The side pressure plate I14 and the side pressure plate II 18 are respectively provided with saw teeth at the upper openings, and tooth surfaces are provided on both sides of the lower end of the upper fixed adapter 1. The saw teeth cooperate with the tooth surfaces at the lower end of the upper fixed adapter 1 to achieve a fixed connection between the upper fixed adapter and the two side pressure plates.

[0031] The slotted bolt assembly consists of a capture cap 3, a breaker 4, a slotted bolt 5, a gasket I 6, a gasket II 7, a spacer block 8, a support sleeve 9 and a locking nut 10. First, the breaker 4 and the gasket I6 are coaxially connected in series and sleeved on the side of the slotted bolt 5 close to the bolt head, and the gasket I 6 is located at the front end of the breaker 4, and the side of the bolt head is recorded as the rear end. Then, the slotted bolt 5 is passed through the upper through holes of the two side pressure plates. After it is in place, the gasket I 6 is located between the breaker 4 and the side pressure plate I14. The gasket II7, the support sleeve 9 and the spacer block 8 are sequentially installed on the protruding end of the slotted bolt 5, and then the above structure is tightened by the locking nut 10. The portion of the slotted bolt 5 located between the two side pressure plates is provided with a weakening groove.

[0032] The present invention is provided with two limiting structures.

[0033] First: a semicircular protrusion is provided at the bottom of the side pressure plate I and the side pressure plate II, and a rectangular groove is provided at the corresponding position of the bottom fixing seat. After being locked in place, the protrusion is embedded in the corresponding groove, and the size of the groove is larger than the size of the protrusion.

[0034] Second: Bosses are arranged on the opposite surfaces of the side pressure plate I and the side pressure plate II. After being locked in place, the bosses of the side pressure plate I and the bosses of the side pressure plate II are in contact to prevent the side pressure plates from swinging left and right.

[0035] Finally, the upper fixed adapter 1 is fixedly connected to the optical pointing mechanism by bolts, and the bottom fixed seat 2 is fixedly connected to the satellite cabin panel by bolts, thereby completing the installation and locking of an integrated separation and avoidance large-load and high-reliability locking and releasing device.

[0036] like Figure 1-2As shown, a separation and avoidance integrated large-load and high-reliability locking and releasing device of the present invention is connected to the optical pointing mechanism through an upper fixed adapter 1, and the optical pointing mechanism is locked and supported at the emitter end, and is connected to the entire satellite cabin plate through a bottom fixed seat 2. After reaching the predetermined orbit, the slotted bolts are broken by the breaker in the slotted bolt assembly, and the side pressure plate assembly is opened to both sides by the elastic leaf spring I and the elastic leaf spring II, thereby disconnecting the fixed connection with the upper fixed adapter, and realizing the release between the optical pointing mechanism and the entire satellite cabin plate.

[0037] The separation and avoidance integrated large-load and high-reliability locking and releasing device described in the present invention utilizes a combination of an expander and a leaf spring to enable the locking and releasing device to have an integrated separation and avoidance function; in addition, the locking and releasing device is combined with a slotted bolt and a side pressure plate to have the ability to resist axial and radial impact loads; the non-pyrotechnic locking and releasing device is achieved with a relatively small single-machine total weight to meet the task capability of integrating impact resistance, locking and avoidance functions.

[0038] The present invention achieves large load capacity and high reliability:

[0039] Large load-bearing capacity: Through the design of the limiting structure, the force of the locking and releasing device is transmitted to the structural parts instead of the elastic leaf spring, which enhances the load-bearing capacity of the unlocking and releasing device, thereby meeting the mechanical impact load during the launching process.

[0040] High reliability:

[0041] The unlocking process and internal structure of the locking and releasing device are simple, which avoids the uncontrollable influence of complex structure on the unlocking after on-orbit and enhances the reliability of the unlocking and releasing device.

[0042] The contents not described in detail in the specification of the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A separation and avoidance integrated large load-bearing high-reliability locking and releasing device, characterized in that: It comprises an upper fixed adapter seat (1), a slotted bolt assembly, two side pressure plate assemblies and a bottom fixed seat (2); The two side pressure plate assemblies are positioned opposite to each other and fixed on the bottom fixing seat (2), and the upper fixed adapter seat (1) is fixed on the upper opening formed by the two side pressure plate assemblies; The slotted bolt assembly comprises a breaker (4), a slotted bolt (5), a gasket I (6), a gasket II (7), a pad (8), a support sleeve (9) and a locking nut (10); through holes are opened at opposite positions on the upper parts of the two side pressure plate assemblies, and the slotted bolt (5) passes through the through holes. The breaker (4) is sleeved on the side of the slotted bolt (5) close to the bolt head, and a gasket I (6) is arranged between the breaker (4) and the adjacent side pressure plate assembly. The support sleeve (9) and the pad (8) are sequentially sleeved on the section of the slotted bolt (5) extending from the two side pressure plate assemblies from back to front, and a gasket II (7) is arranged between the support sleeve (9) and the adjacent side pressure plate assembly. The locking nut (10) is located at the front end of the pad (8) and is used to lock the pad (8), the support sleeve (9) and the gasket II (7); the bolt head side is defined as the rear end.

2. The separation and avoidance integrated large load-bearing high-reliability locking and releasing device according to claim 1, characterized in that: A weakened groove is formed on the portion of the slotted bolt (5) located between the two side pressure plate assemblies.

3. The separation and avoidance integrated large load-bearing high-reliability locking and releasing device according to claim 1 is characterized in that: The slotted bolt assembly also includes a capture cap (3), which is installed on the side pressure plate assembly close to the bolt head and covers the bolt head, the expander (4) and the gasket I (6) of the slotted bolt assembly.

4. The separation and avoidance integrated large load-bearing high-reliability locking and releasing device according to claim 1, characterized in that: The two side pressure plate assemblies are respectively referred to as side pressure plate assembly I and side pressure plate assembly II; the side pressure plate assembly I comprises an elastic leaf spring I (11), a loading sheet I (12), a loading sheet II (13), and a side pressure plate I (14); the side pressure plate assembly II comprises an elastic leaf spring II (15), a loading sheet III (16), a loading sheet IV (17), and a side pressure plate II (18); The side pressure plate I (14) and the side pressure plate II (18) are positioned opposite to each other, the bottoms of the side pressure plates are in contact with the bottom fixing seat (2), and the two side pressure plates are flush with the outer surfaces of the bottom fixing seat respectively; The elastic leaf spring I (11) is located outside the side pressure plate I (14) and the bottom fixing seat (2), and the upper end of the elastic leaf spring I (11) is fixed to the outside of the side pressure plate I (14) through a loading sheet I (12), and the lower end of the elastic leaf spring I (11) is fixed to the outside of the bottom fixing seat (2) through a loading sheet II (13); The elastic leaf spring II (15) is located outside the side pressure plate II (18) and the bottom fixing seat (2), and the upper end of the elastic leaf spring II (15) is fixed to the outside of the side pressure plate II (18) through the loading plate III (16), and the lower end of the elastic leaf spring II (15) is fixed to the outside of the bottom fixing seat (2) through the loading plate IV (17).

5. The separation and avoidance integrated large load-bearing high-reliability locking and releasing device according to claim 4, characterized in that: Tooth surfaces are arranged on both sides of the lower end of the upper fixed adapter seat (1), and saw teeth are processed on the upper ends of the side pressure plate I (14) and the side pressure plate II (18), and the saw teeth cooperate with the tooth surfaces of the lower end of the upper fixed adapter seat (1) to achieve fixed connection.

6. The separation and avoidance integrated large load-bearing high-reliability locking and releasing device according to claim 4, characterized in that: The bottom of the side pressure plate I (14) and the side pressure plate II (18) are both provided with protrusions, and the corresponding positions of the bottom fixing seat (2) are provided with grooves. After being locked in place, the protrusions are embedded in the corresponding grooves, and the size of the grooves is larger than the size of the protrusions.

7. The separation and avoidance integrated large load-bearing high-reliability locking and releasing device according to claim 4, characterized in that: Bosses are arranged on the opposite surfaces of the side pressure plate I (14) and the side pressure plate II (18). After being locked in place, the bosses of the side pressure plate I (14) and the bosses of the side pressure plate II (18) are in contact.

8. An application method of the separation and avoidance integrated large-load and high-reliability locking and releasing device according to any one of claims 1 to 7, characterized in that: include: The upper fixed adapter (1) is fixedly connected to the optical pointing mechanism by bolts, and the bottom fixed seat (2) is fixedly connected to the satellite cabin plate by bolts to achieve locking; After reaching the predetermined orbit, the breaker breaks the slotted bolts, and the two side pressure plate assemblies open to both sides, disconnecting the fixed connection with the upper fixed adapter, thereby releasing the optical pointing mechanism and the satellite cabin panel.

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