Sequentially unlocked synchronized start modular actuation device

Abstract

The application relates to a modular actuating device with sequential unlocking and synchronous starting, which comprises a shell, an actuating mechanism, a synchronous ring and a shear pin, the initial connection between the synchronous ring and the shell is realized through the shear pin, and the constraint between the synchronous ring and a piston is provided before the actuating device works; a plurality of modular actuating mechanisms are fixed on the shell; the shell is provided with a connecting flange, and the actuating mechanism is also provided with connecting threads with a structure to be actuated; before an ignition signal is received, the actuating device realizes multi-point connection through the shell and the actuating mechanism; when the ignition signal is received, the actuating mechanism works, and multi-path actuation is realized. The application solves the multi-path actuation demand and the modular design and installation demand, and realizes the synchronous starting in a true sense, and there is no starting time deviation.

Description

TECHNICAL FIELD

[0001] The present application relates to a sequential unlocking synchronous starting modular actuating device, belonging to the technical field of spacecraft systems. BACKGROUND

[0002] The actuating device is used to provide reliable locking and actuating separation functions for spacecraft. In the process of missile launching, it plays a stable connection function before receiving the signal of wing surface unfolding or multi-warhead separation, and realizes the push separation function from inside to outside when receiving the signal.

[0003] On spacecraft, the most widely used situation at present is the combined use of multiple actuating devices, which provide synchronous work of electric signals. However, due to the different delay time of electric signals and the working time error of each actuating device, it is difficult to ensure the high synchronism of multiple actuating devices.

[0004] In order to improve the synchronism, individual spacecraft uses multiple actuating devices with non-electric transmission explosion. Although this method can make up for the delay error of electric signals, it still cannot guarantee the synchronous starting of multiple actuating devices after the non-electric transmission explosion is transmitted to each actuating device. In addition, the non-electric transmission explosion device is expensive and brings additional weight cost.

[0005] In addition, when the actuating path needs to be adjusted, the non-electric transmission explosion and related interfaces often need to be redesigned, which leads to the difficulty of adjusting the actuating path in the later stage. SUMMARY

[0006] The technical problem solved by the present application is to overcome the shortcomings of the prior art and provide a sequential unlocking synchronous starting modular actuating device, which solves the multi-path actuating demand and modular design and installation demand, and realizes true synchronous starting without starting time deviation.

[0007] The technical solution of the present application is:

[0008] A sequential unlocking synchronous starting modular actuating device, comprising a shell, an actuating mechanism, a synchronization ring and a shear pin,

[0009] The shear pin realizes the initial connection between the synchronization ring and the shell, providing constraint between the synchronization ring and the piston before the actuating device works.

[0010] Multiple modular actuating mechanisms are fixed on the shell. The shell has a connecting flange, and the actuating mechanism also has a connecting thread with the structure to be actuated. Before receiving the ignition signal, the actuating device realizes multi-point connection through the shell and the actuating mechanism. When the ignition signal is received, the actuating mechanism works to realize multi-path actuation.

[0011] Further, the actuating mechanism comprises an outer cylinder, a piston, a sealing ring B and a sealing ring C; the sealing ring B and the sealing ring C can realize the gas sealing when being unlocked; the sealing ring B is arranged between the outer cylinder and the piston; the sealing ring C is arranged between the outer cylinder and the shell; a threaded hole is arranged at the top of the piston and used for being connected with a structure to be actuated; the outer cylinder and the piston are mutually nested, and two edges are milled away at the minimum diameters of the outer cylinder and the piston to form anti-rotation grooves.

[0012] Further, the synchronization ring is in a ring structure, and a ring groove is arranged at the outer circle of the synchronization ring;

[0013] The bottom of the piston of the actuating mechanism is provided with a square groove, and the ring groove structure of the synchronization ring can be inserted into the square grooves of multiple pistons along the circumference to realize that one synchronization ring simultaneously restricts multiple pistons.

[0014] Further, the movement direction of the synchronization ring is perpendicular to the plane in which the axial directions of the multiple pistons are located, and when the synchronization ring moves, the multiple pistons are simultaneously started.

[0015] Further, the synchronization ring moves first, and the piston moves later, so that the unlocking is sequentially realized.

[0016] Further, multiple hole diameters are arranged in the shell and are mutually penetrated, and cooperate with the sealing ring A, the sealing ring B and the sealing ring C to close the container cavity, and the sealing ring A is arranged between the synchronization ring and the shell.

[0017] Further, the ignition device and the end cover are further included, one hole diameter is arranged with the ignition device, one hole diameter is arranged with the synchronization ring and the end cover, and the remaining hole diameters are arranged with the actuating mechanism.

[0018] Further, when the ignition device receives an electric signal, high-pressure gas is generated in the closed container and acts on the synchronization ring to push the synchronization ring to shear the shear pin and move to the end cover to stop, at this time, the synchronization ring releases the restriction on the piston, the gas pushes the piston to move, and when the piston moves to the inner end surface and the inner end surface of the outer cylinder, the preset actuating stroke is reached, and the actuating function is ended.

[0019] Further, the ignition device is opposite to the synchronization ring, and after the movement of the synchronization ring releases the piston, the multiple actuating mechanisms are simultaneously started.

[0020] Further, a cutter is arranged at the tail of the synchronization ring, and the cable of the ignition device is wound behind the cutter, so that after the ignition device is electrified, the cable is cut off first and then multiple actuations are performed.

[0021] The beneficial effects of the present application compared with the prior art are:

[0022] (1) The actuating device of the present application utilizes modular design, the actuating mechanism and the shell are designed separately, the structure design is flexible, independent of each other, easy to assemble, the actuating mechanisms are equivalent and replaceable, the number of actuating mechanisms and the corresponding hole positions of the shell can be adjusted to realize the customization of the actuating path of the actuating device;

[0023] (2) The synchronous ring plays a parallel role through the setting of the ring groove, and can realize the simultaneous constraint and synchronous starting of multiple actuating mechanisms, and realize the constraint before the work of the modular actuating device and the high synchronism during the work;

[0024] (3) The modular actuating device of the present application adopts the sequential unlocking mode of unlocking the synchronous ring first and working the actuating mechanism later, realizes the expandability of the synchronous ring work, and can realize the cable self-cutting function in cooperation with the cutter structure. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the axial view of the device before the actuation of the present application;

[0026] Figure 2 is the left view and front view of the device of the present application, and the positions of A-A and B-B two sections are marked in the figure;

[0027] Figure 3 is the left view of the device of the present application, corresponding to the A-A view in Figure 2 ;

[0028] Figure 4 is the front view of the device of the present application, corresponding to the B-B view in Figure 2 ;

[0029] Figure 5 is the left view of the device of the present application when the synchronous ring works first to release the constraint of the actuating mechanism, and the actuating mechanism has not started working;

[0030] Figure 6 is the left view of the device of the present application when the work is completed;

[0031] Figure 7 is the axial view of the device of the present application when the work is completed;

[0032] Figure 8 is the front view of the device of the present application when the work is completed;

[0033] Figure 9 is the isometric view of the synchronous ring in the device of the present application. DETAILED DESCRIPTION

[0034] The present application will be further described below in conjunction with the embodiments.

[0035] As Figures 1-9As shown, a sequential unlocking synchronous starting modular actuator device is composed of a shell 1, an igniter 2, an actuator mechanism 3, an internal hexagonal screw 4, an end cover 5, a synchronous ring 6, a shear pin 7, and a sealing ring A 8. The actuator mechanism 3 is composed of an outer cylinder 9, a piston 10, a sealing ring B 11, and a sealing ring C 12. The shell 1 is connected to the fixed end of the spacecraft structure through the flange face Figure 2 The actuator mechanism 3 is connected to the end to be actuated of the spacecraft structure through the threads of the piston 10.

[0036] The initial connection between the synchronous ring 6 and the shell 1 is achieved through the shear pin 7, which provides a constraint between the synchronous ring 6 and the piston before the actuator device works;

[0037] Multiple modular actuator mechanisms 3 are fixed on the shell 1 through the internal hexagonal screw 4; the shell 1 has a connecting flange, and the actuator mechanism 3 also has connecting threads with the structure to be actuated; before receiving the ignition signal, the actuator device realizes the multi-point connection function through the shell 1 and the actuator mechanism 3; when receiving the ignition signal, the actuator mechanism 3 works to realize multi-path actuation.

[0038] The actuator mechanism 3 includes the outer cylinder 9, the piston 10, the sealing ring B 11, and the sealing ring C 12; the sealing ring B 11 and the sealing ring C 12 can realize the sealing of the combustion gas when unlocking; the sealing ring B 11 is arranged between the outer cylinder 9 and the piston 10; the sealing ring C 12 is arranged between the outer cylinder 9 and the shell 1; a threaded hole is arranged at the top of the piston 10 for connecting to the structure to be actuated; the outer cylinder 9 and the piston 10 are nested with each other, and two edges are milled away at the smallest diameters of the outer cylinder 9 and the piston 10 to form anti-rotation grooves, which ensure the smooth rotation of the threaded hole at the top of the piston 10.

[0039] The synchronous ring 6 is a ring structure, and a ring groove is arranged at the outer circle of the synchronous ring 6;

[0040] The bottom of the piston 10 of the actuator mechanism 3 is provided with a square groove, and the ring groove structure of the synchronous ring 6 can be inserted into the bottom square groove of multiple pistons 10 to realize the function of simultaneously constraining multiple pistons 10 with one synchronous ring 6, thereby providing the anti-mechanical environment for multiple pistons 10 before actuation.

[0041] The movement direction of the synchronous ring 6 is perpendicular to the plane where the multiple pistons 10 are axially located, and when the synchronous ring 6 moves, the multiple pistons 10 can be synchronously started.

[0042] The synchronous ring 6 moves first, and the piston 10 moves later, which can realize sequential unlocking.

[0043] Multiple apertures are arranged in the shell 1 and are mutually penetrated to cooperate with the sealing ring A 8, the sealing ring B 11, and the sealing ring C 12 to close the container cavity, and the sealing ring A 8 is arranged between the synchronous ring 6 and the shell 1.

[0044] Also include the igniter 2 and end cover 5, wherein a hole diameter installation igniter 2, a hole diameter installation synchronous ring 6 and end cover 5, the rest of the hole diameter is installed as the action mechanism 3.

[0045] When the igniter 2 is connected to the electrical signal, high pressure gas is generated to act on the closed container, pushing the synchronous ring 6 to cut the shear pin 7 and move to collide with the end cover 5 to stop, at this time the synchronous ring 6 releases the constraint on the piston 10, and the gas pushes the piston 10 to move, when the piston moves to the inner end surface and the inner end surface of the outer cylinder, the preset actuation stroke is reached, and the actuation function is completed.

[0046] The igniter 2 is opposite to the synchronous ring 6, and the synchronous ring 6 moves to release the piston 10, and multiple action mechanisms 3 can be synchronously started.

[0047] A cutter is arranged at the tail of the synchronous ring 6, and the cable of the igniter 2 is wound around the cutter, so that the igniter 2 can cut off the cable before multiple actions are performed.

[0048] As shown in Figure 1 , the device is in the state before actuation, wherein the number of actuation paths can be customized, and four actuation paths are shown as an example, and four sets of action mechanisms 3 are installed. Figure 2 It is a left view and a front view of the device, and the positions of two sections A-A and B-B are marked in the figure. Figure 3 It is a left view of the device, corresponding to the A-A view in Figure 2 . Figure 4 It is a front view of the device, corresponding to the B-B view in Figure 2 .

[0049] As shown in Figure 4 , the piston 10 is arranged radially outward with the axis of the synchronous ring 6 as the center, is connected with the synchronous ring 6 in the device, provides an interface thread outside the device to be connected with the structure of the spacecraft to be actuated, and can provide a certain connection force. The sealing ring A8, the sealing ring B11 and the sealing ring C12 cooperate with the shell to form a closed gas cavity.

[0050] When the spacecraft structure needs the actuation function, the igniter 2 is connected to the electrical signal to output high pressure gas, and the gas enters the closed cavity, as shown in Figure 5 , pushes the synchronous ring 6 to move and cut the shear pin 7 to release the constraint on the piston 10. After the piston 10 is released, under the action of the gas, it moves to the outer cylinder 9 and stops, as shown in Figure 6 , to provide the actuation function, and the actuation distance can be customized. The isometric view of the device after the actuation function is completed is shown in Figure 7 , and the state of each actuation mechanism is shown in Figure 8 .

[0051] The synchronous ring structure is shown in Figure 9 The simultaneous starting control of multiple actuating mechanisms is realized by the extended ring structure.

[0052] The actuating mechanism is designed in a modular manner, and the actuating mechanism is referred to as a module. The module is installed independently of the shell and the synchronous ring. According to the number of actuating paths required by the user, the three-point, four-point, and multi-point forms can be customized to realize the multi-path actuating function. When a fault occurs in a path, the module can be replaced individually. This paper takes four actuations as an example for illustration; the synchronous ring is installed on the actuating center axis, and the center is used as a reference to simultaneously constrain the positions of the four pistons, thereby realizing the functions of simultaneous constraint and simultaneous release of the four pistons and achieving high synchronization. The initial state of the synchronous ring is positioned by a shear pin. When the synchronous ring does not move, the four actuating mechanisms cannot work. The igniter is directly opposite the synchronous ring. When working, the high-pressure gas generated by the igniter first acts on the synchronous ring. After the synchronous ring moves, the constraint of the four actuating mechanisms is released. The gas pressure continues to push the piston to move, thereby realizing the sequential unlocking of the actuating mechanism. The synchronous ring can also be used in combination with its movement stroke and cutter parts to realize a pre-actuation function. Through the initial connection function of the piston and the synchronous ring, a certain connection function is ensured before the actuating device works, and the multi-path tensile and compressive functions can be realized.

[0053] Although the present application has been disclosed with the above preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present application by using the disclosed methods and technical contents without departing from the spirit and scope of the present application. Therefore, any simple modification, equivalent change, and modification made according to the technical essence of the present application to the above embodiments, which does not deviate from the technical solutions of the present application, belongs to the protection scope of the technical solutions of the present application.

Claims

1. A sequentially unlocked, synchronously initiated, modular actuation device, characterized by, It comprises a shell (1), an actuating mechanism (3), a synchronous ring (6) and a shear pin (7); The initial connection between the synchronous ring (6) and the shell (1) is realized through the shear pin (7), which provides a constraint between the synchronous ring (6) and the piston before the operation of the actuating device; A plurality of modular actuating mechanisms (3) are fixed on the shell (1); the shell (1) has a connecting flange, and the actuating mechanism (3) also has a connecting thread with the structure to be actuated; before receiving the ignition signal, the actuating device realizes multi-point connection through the shell (1) and the actuating mechanism (3); when receiving the ignition signal, the actuating mechanism (3) works to realize multi-path actuation. The actuating mechanism (3) comprises an outer cylinder (9), a piston (10), a sealing ring B (11) and a sealing ring C (12); the sealing ring B (11) and the sealing ring C (12) can realize gas sealing when being unlocked; the sealing ring B (11) is arranged between the outer cylinder (9) and the piston (10); the sealing ring C (12) is arranged between the outer cylinder (9) and the shell (1); a threaded hole is arranged at the top of the piston (10) for connecting with the structure to be actuated; the outer cylinder (9) and the piston (10) are mutually nested, and two edges are milled away at the minimum diameters of the outer cylinder (9) and the piston (10) to form anti-rotation grooves; The synchronous ring (6) is in a ring structure, and a ring groove is arranged at the outer circle thereof; The bottom of the piston (10) of the actuating mechanism (3) is provided with a square groove, and the ring groove structure of the synchronous ring (6) can be inserted into the bottom square grooves of a plurality of pistons (10) along the circumference to realize that one synchronous ring (6) simultaneously constrains a plurality of pistons (10); The movement direction of the synchronous ring (6) is perpendicular to the plane in which the plurality of pistons (10) are axially located, and when the synchronous ring (6) moves, the plurality of pistons (10) are simultaneously started; A plurality of hole diameters are arranged in the shell (1) and are mutually penetrated to form a closed cavity in cooperation with the sealing ring A (8), the sealing ring B (11) and the sealing ring C (12), and the sealing ring A (8) is arranged between the synchronous ring (6) and the shell (1); It also comprises an igniter (2) and an end cover (5), wherein one hole diameter is arranged with the igniter (2), one hole diameter is arranged with the synchronous ring (6) and the end cover (5), and the remaining hole diameters are arranged with the actuating mechanism (3); After the igniter (2) receives the electric signal, high-pressure gas acts in the closed cavity to push the synchronous ring (6) to shear the shear pin (7) to move and stop by colliding with the end cover (5), at this time, the synchronous ring (6) releases the constraint on the piston (10), the gas pushes the piston (10) to move, and when the piston moves to the internal end surface and the internal end surface of the outer cylinder are in contact, the preset actuation stroke is reached, and the actuation function is ended.

2. A sequentially unlocked, simultaneously activated, modular actuation device according to claim 1, characterized in that The synchronous ring (6) moves first, and the piston (10) moves later to realize sequential unlocking.

3. A sequentially unlocked, simultaneously activated, modular actuation device according to claim 1, characterized in that The igniter (2) is opposite to the synchronous ring (6), and after the synchronous ring (6) moves to release the piston (10), the plurality of actuating mechanisms (3) are simultaneously started.

4. A sequentially unlocked, simultaneously activated, modular actuation device according to claim 3, characterized in that A cutter is arranged at the tail of the synchronous ring (6), and the cable of the igniter (2) is wound around the cutter, so that after the igniter (2) is powered on, the cable is cut off first and then multi-path actuation is performed.

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