Impulse-controllable connecting, pushing and impacting integrated gas-driven separation mechanism

Abstract

The invention provides an impulse-controllable connecting, pushing and impacting integrated gas-driven separation mechanism. A separation barrel and an outer sleeve are used for being fixedly connected with a separation body and a main body where the separation body is located correspondingly; an end cover with an air tap is mounted at the bottom of the outer sleeve; the pushing impulse adjusting mechanism is installed in the outer sleeve in a sealed mode and used for providing upward pushing force during separation under the action of high-pressure gas introduced from the gas nozzle. The center push rod is connected with the output end of the push impulse adjusting mechanism, and a conical groove, a boss and a ball head are sequentially arranged on the center push rod. The boss is used for achieving radial limiting of the split nut before separation, and the split nut is connected with the outer barrel and the separation barrel through threads before separation and used for reliable connection of the main body and the separation body and application of pre-tightening force. The ball socket sleeve is connected with the inner wall of the separation barrel, the ball socket and the spring are arranged in the ball socket sleeve, and the ball socket can axially move along the inner wall of the ball socket sleeve; the top ball head of the center push rod contacts with the ball socket, one end of the spring contacts with the inner wall of the separation barrel, the other end of the spring contacts with the rear wall of the ball socket, and the ball socket and the ball head are pressed tightly through spring force to resist the mechanical environment in flight and prevent misoperation of the center push rod.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of launch vehicle structure mechanism, and particularly relates to a thrust impulse controllable connection push and impulse integrated gas-driven separation mechanism. BACKGROUND

[0002] Separation is one of the most critical execution actions in flight missions, and the reliability and accuracy of the execution directly affect the success or failure of the flight and the mission. In the flight mission profile of a launch vehicle, the separation action can be further divided into three parts, namely connection, unlocking and push impulse. At present, the connection, unlocking and push impulse of a launch vehicle separation body are usually realized by different mechanisms, and when the mechanisms work together, there are problems such as complex timing control of unlocking and push impulse actions, complex mechanism system composition, large required installation space, more driving sources and low reliability. SUMMARY

[0003] The technical problem solved by the present application is that, in view of the above problems, the present application provides a thrust impulse controllable connection push and impulse integrated gas-driven separation mechanism, which integrates the functions of connection, unlocking and push impulse in a single mechanism, realizes single driving source, thrust impulse controllability, large load capacity, weak unlocking and low impact separation.

[0004] The technical solution of the present application is that a thrust impulse controllable connection push and impulse integrated gas-driven separation mechanism comprises a bottom end cover, an outer cylinder, a push impulse adjusting mechanism, a center push rod, a ball socket assembly, a ball socket sleeve, a spring, a separation cylinder and a split nut.

[0005] The separation cylinder and the outer sleeve are respectively used for connecting and fixing with a separation body and a main body in which the separation body is located; the bottom of the outer sleeve is provided with an end cover with a gas nozzle; the push impulse adjusting mechanism is sealingly installed in the outer sleeve and is used for providing an upward thrust during separation under the action of high-pressure gas introduced from the gas nozzle; the center push rod is connected with the output end of the push impulse adjusting mechanism, and a conical groove, a boss and a ball head are sequentially arranged on the center push rod; the boss is used for radially limiting the split nut before separation, and the split nut is connected with the outer cylinder and the separation cylinder through threads before separation, and is used for reliably connecting the main body and the separation body and applying a pre-tightening force; the ball socket sleeve is connected with the inner wall of the separation cylinder, the ball socket and the spring are arranged inside the ball socket sleeve, and the ball socket can move axially along the inner wall of the ball socket sleeve; the ball head at the top of the center push rod is in contact with the ball socket, one end of the spring is in contact with the inner wall of the separation cylinder, and the other end of the spring is in contact with the rear wall of the ball socket, and the ball socket and the ball head are pressed tightly by the spring force to resist the mechanical environment in flight and prevent the center push rod from being misoperated.

[0006] During separation, the central push rod moves upward, releasing the radial constraint of the split nut. The contact and engagement between the conical groove inclined surface on the inner side of the split nut and the conical groove inclined surface of the central push rod will force the split nut to move radially inward, releasing the thread constraint of the split nut on the outer cylinder and the separation cylinder, realizing reliable unlocking of the main body and the separation body, while capturing and confining the split nut within the conical groove.

[0007] Preferably, the thrust adjustment mechanism includes multi-stage piston rods and adjusting nuts; each stage of piston rods is sequentially fitted and sealed, with the outermost piston rod nested inside the outer cylinder, and the two are sealed together; the innermost piston rod is connected to the central push rod and is tightened and fixed by the adjusting nut.

[0008] Preferably, the bottom of the tapered groove of the central push rod is a hollow screw with external threads. The hollow screw is screwed into the innermost piston push rod, and its axial position is adjusted by the threads and tightened by the adjusting nut.

[0009] Preferably, the innermost piston push rod has two chambers inside, with the lower air chamber connected to the air nozzle on the end cap.

[0010] Preferably, the thrust is adjusted by changing the number of piston push rod stages, increasing or decreasing the piston push rod diameter, increasing or decreasing the length of each piston push rod, and adjusting the volume of the lower air chamber.

[0011] Preferably, the air supply pipeline is connected to the air nozzle set on the bottom end cover, and the air supply pipeline is connected to the air source; the pressure building process of the air chamber in the adjustment mechanism is achieved by adjusting the air pressure of the air source, the diameter of the air pipe of the air supply pipeline, the length of the pipeline, and the orifice diameter of the orifice plate in the air path, so as to realize the impulse control of the integrated push-pump air-driven separation mechanism.

[0012] Preferably, a boss with external threads is provided at the center of the separating cylinder, and the root of the boss is lower than the rest of the end face of the separating cylinder to form a groove. The inner wall of the ball socket sleeve is provided with internal threads and is connected to the boss by threads.

[0013] Preferably, a boss is provided at the bottom of the threaded inner wall of the outer sleeve, and the central push rod boss has two steps. The lower step with a smaller diameter is used to achieve radial limiting of the split nut, and the upper step with a larger diameter is used together with the boss on the inner wall of the outer sleeve to axially limit the split nut before separation.

[0014] The advantages of this invention compared with the prior art are: this invention has the advantages of compact structure, high connection efficiency, strong load-bearing capacity, controllable power impulse, and high reliability.

[0015] (1) The present invention proposes an integrated air-driven separation mechanism with controllable impulse, which can realize the functions of connection, unlocking and push-impact in a single mechanism.

[0016] The present invention proposes an integrated pneumatic-driven separation mechanism with controllable impulse connection and push-push, which connects the main body and the separation body through a split nut, and simultaneously realizes the release and unlocking function of the split nut and the push-push function through a pneumatic push rod and a special structural design, so as to realize the sequential drive mechanism unlocking and push-push by the same high-pressure pneumatic drive source.

[0017] (2) The integrated gas-driven separation mechanism with controllable impulse proposed in this invention can realize controllable and adjustable impulse, and can achieve lean design of impulse according to separation requirements.

[0018] The present invention proposes an integrated pneumatic separation mechanism with controllable impulse. Driven by high-pressure gas, the mechanism can adjust the pressure build-up process of the gas chamber by parameters such as the gas pressure of the gas source (such as a high-pressure gas cylinder), the diameter of the external gas pipe, the pipe length, and the orifice diameter of the gas plate in the gas path, thereby realizing impulse control of the integrated pneumatic separation mechanism.

[0019] The impulse of the integrated pneumatic separation mechanism with controllable impulse proposed in this invention can also be achieved by adjusting the mechanism design, such as increasing or decreasing the number of piston push rod stages, increasing or decreasing the piston push rod diameter, increasing or decreasing the length of each piston push rod stage, etc.

[0020] (3) The impulse controllable connection and thrust integrated air-driven separation mechanism proposed in this invention has a compact structure, occupies little internal space of the rocket body, and can achieve a large connection load capacity and a large thrust capacity with a small volume.

[0021] The present invention proposes an integrated pneumatic separation mechanism with controllable impulse, which is integrated into a near-cylindrical cylinder. The main body and the separation body are connected by threads and supported by split nuts, and the bearing capacity is large.

[0022] The present invention proposes an integrated pneumatic separation mechanism with controllable impulse for connection and push-pump, which can realize the functions of multiple mechanisms such as conventional connection and unlocking mechanism and push-pump mechanism through a single mechanism, and uses only one driving energy source, which can simplify the structure of the mechanism system and reduce the installation space requirements.

[0023] (4) The working sequence of the impulse controllable connection push-pump integrated gas-driven separation mechanism proposed in this invention is easy to control, which can avoid the timing control problem when multiple mechanisms work together.

[0024] The present invention proposes an integrated pneumatic separation mechanism with controllable impulse. The mechanism achieves sequential control of unlocking the split nut and pushing the ejector by adjusting the upward movement distance of the central push rod. Specifically, under the action of high-pressure gas, the pneumatic push rod first releases the radial constraint on the split nut during its upward movement. Then, it moves a certain distance until the ball socket contacts the upper surface of the inner wall of the separation cylinder before pushing the ejector body. There is a clear sequential relationship between the two processes, realizing multi-action timing control of a single drive source.

[0025] (5) The impulse controllable connection push-pump integrated air-driven separation mechanism proposed in this invention can realize the air-driven unlocking and push-pumping functions, and can also realize the reliable unlocking and capture of the split nut.

[0026] This invention proposes an integrated pneumatic separation mechanism with controllable impulse. After the boss of the central push rod fully moves above the inner boss of the segmented nut, releasing the radial constraint on the segmented nut, the central push rod continues to move upward under the action of high-pressure gas. The contact engagement between the conical groove inclined surface on the inner side of the segmented nut and the conical groove inclined surface of the central push rod forces the segmented nut to move radially inward, effectively releasing the threaded constraint of the segmented nut on the outer cylinder and the separation cylinder, achieving reliable unlocking of the main body and the separation body. Simultaneously, it can also capture and confine the segmented nut within the conical groove. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figures 2-5 This is a schematic diagram of the separation process of the present invention. Detailed Implementation

[0029] The present invention will be further described below with reference to the embodiments.

[0030] like Figure 1 As shown, the product of this invention consists of: a bottom end cap 1, a screw 2, an outer cylinder 3, a first-stage piston push rod 4, a second-stage piston push rod 5, an adjusting nut 6, a center push rod 7, a ball socket assembly 8, a ball socket sleeve 9, a spring 10, a separating cylinder 11, a split nut 12, and an O-ring 13; the center push rod 7 is composed of a tapered groove 7-1, a boss 7-2, and a ball head 7-3.

[0031] Connection relationship: such as Figure 2 As shown, in the connected state, one end of the integrated push-pump air-driven separation mechanism is connected and fixed to the main body 14 via the flange of the outer cylinder 3, and the other end is connected and fixed to the separation body 15 via the flange of the separation cylinder 11. In addition, the bottom of the integrated push-pump air-driven separation mechanism is connected to the air supply pipeline via an air nozzle provided on the bottom end cover 1.

[0032] The first-stage piston rod 4 is nested inside the outer cylinder 3 and sealed by an O-ring 13. The second-stage piston rod 5 is nested inside the first-stage piston rod 4 and sealed by an O-ring 13.

[0033] The central push rod 7 is connected to the secondary piston push rod 5 by a thread and is screwed into the secondary piston push rod 5. Its axial position can be adjusted by the thread and tightened by the adjusting nut 6).

[0034] The ball head 7-3 at the top of the center push rod 7 contacts the ball socket 8. One end of the spring 10 contacts the inner wall of the separation cylinder 11, and the other end contacts the rear wall of the ball socket 8. The spring force presses the ball socket 8 and the ball head 7-3 together to resist the mechanical environment during flight and prevent the center push rod 7 from malfunctioning.

[0035] The ball socket sleeve 9 is connected to the inner wall of the separation cylinder 10 by threads. The ball socket 8 and the spring 10 are inside the ball socket sleeve. The ball socket 8 can move axially along the inner wall of the ball socket sleeve 9.

[0036] The split nut 12 connects the outer cylinder 3 and the separating cylinder 11 via threads, serving as a reliable connection between the main body and the separating body, and for applying preload. The split nut 12 has a boss on its inner side, which contacts the boss 7-2 of the central push rod 7, achieving radial limiting of the split nut. Figure 1 As shown, in a preferred embodiment of the present invention, a boss is provided at the bottom of the thread on the inner wall of the outer sleeve, and the central push rod boss is a two-stage step. The lower step with a smaller diameter is used to achieve radial limiting of the split nut, and the upper step with a larger diameter is used together with the boss on the inner wall of the outer sleeve to axially limit the split nut before separation.

[0037] Organizational work sequence:

[0038] Pneumatic unlocking: During unlocking, high-pressure gas is injected into the integrated pneumatic separation mechanism via the gas supply line and the gas nozzle located on the bottom end cap 1. Under the action of the high-pressure gas, the secondary piston push rod 5 drives the central push rod 7 to move upward. When it moves a certain distance, the inclined surface of the conical groove 7-1 of the central push rod 7 contacts the inclined surface of the conical groove on the inner side of the split nut 12. At this time, the boss 7-2 of the central push rod 7 moves completely above the boss on the inner side of the split nut 12, releasing the radial constraint on the split nut 12. When the central push rod 7 continues to move upward, the inclined surface of the conical groove on the inner side of the split nut 12 will move along the inclined surface of the conical groove 7-1 of the central push rod 7, thereby driving the split nut 12 to move radially inward, thereby releasing the threaded constraint on the outer cylinder 3 and the separation cylinder 11, realizing the unlocking of the main body 14 and the separation body 15. Figure 3 As shown.

[0039] Pneumatic-driven pusher: After the split nut is unlocked, the secondary piston pusher 5 will continue to drive the central pusher 7 upward under the action of high-pressure air, while simultaneously pushing the ball socket 8 upward against the spring force of the spring 10, until the top of the ball socket 8 contacts the inner wall of the separation cylinder 11. Figure 4 As shown. At this time, the central push rod 7 will push the separator cylinder 11 and the separator 15 upward, realizing the air-driven thrust. When the first-stage piston push rod 4 and the second-stage piston push rod 4 have fully moved into position, as shown... Figure 5 As shown, the air-driven thrusting has ended.

[0040] This invention overcomes the problems of complex timing control in the multi-mechanism collaborative operation of existing technologies, and provides an integrated air-driven connection and thrust mechanism with controllable impulse, which can be applied to the wide-range connection, thrust and separation conditions of launch vehicles. It solves the problems of complex system composition of launch vehicle separation mechanism, complex timing control of the collaborative operation of each mechanism, large space occupation, and inconsistent drive energy.

[0041] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

Claims

1. A controllable impulse integrated pneumatic separation mechanism, characterized in that: Includes bottom end cap, outer cylinder, push impulse adjustment mechanism, center push rod, ball socket assembly, ball socket sleeve, spring, separation cylinder, and split nut; The separating cylinder and outer sleeve are used to connect and fix to the separating body and the main body on which the separating body is located, respectively; an end cap with an air nozzle is installed at the bottom of the outer sleeve; the thrust adjustment mechanism is sealed and installed inside the outer sleeve, and is used to provide upward thrust during separation under the action of high-pressure gas introduced from the air nozzle; the central push rod is connected to the output end of the thrust adjustment mechanism, and a conical groove, a boss, and a ball head are arranged sequentially on the central push rod; the boss is used to achieve radial limit of the split nut before separation, and the split nut is connected to the outer cylinder and the separating cylinder by threads before separation, for reliable connection between the main body and the separating body and application of pre-tightening force; the ball socket sleeve is connected to the inner wall of the separating cylinder, and the ball socket and spring are inside the ball socket sleeve, and the ball socket can move axially along the inner wall of the ball socket sleeve; the ball head at the top of the central push rod contacts the ball socket, one end of the spring contacts the inner wall of the separating cylinder, and the other end contacts the rear wall of the ball socket, and the spring force presses the ball socket and the ball head together to resist the mechanical environment in flight and prevent the central push rod from malfunctioning; During separation, the central push rod moves upward, releasing the radial constraint of the split nut. The contact and engagement between the conical groove inclined surface on the inner side of the split nut and the conical groove inclined surface of the central push rod will force the split nut to move radially inward, releasing the thread constraint of the split nut on the outer cylinder and the separation cylinder, realizing reliable unlocking of the main body and the separation body, while capturing and confining the split nut within the conical groove.

2. The impulse-controllable integrated pneumatic separation mechanism according to claim 1, characterized in that: The impulse adjustment mechanism includes multi-stage piston rods and adjusting nuts; each stage of piston rods is sequentially fitted and sealed, with the outermost piston rod nested inside the outer cylinder, and the two are sealed together; the innermost piston rod is connected to the central push rod and is tightened and fixed by the adjusting nut.

3. The impulse-controllable integrated pneumatic-driven separation mechanism according to claim 2, characterized in that: The bottom of the tapered groove of the central push rod is a hollow screw with external threads. The hollow screw is screwed into the innermost piston push rod, and its axial position is adjusted by the threads and tightened by the adjusting nut.

4. The impulse-controllable integrated pneumatic-driven separation mechanism according to claim 2, characterized in that: The innermost piston push rod has two chambers inside, with the lower air chamber connected to the air nozzle on the end cap.

5. The impulse-controllable integrated pneumatic-driven separation mechanism according to claim 2, characterized in that: The thrust is adjusted by changing the number of piston push rod stages, increasing or decreasing the piston push rod diameter, increasing or decreasing the length of each piston push rod, and adjusting the volume of the lower air chamber.

6. The impulse-controllable integrated pneumatic-driven separation mechanism according to claim 1, characterized in that: The air supply pipeline is connected to the air nozzle set on the bottom end cover, and the air supply pipeline is connected to the air source. The pressure build-up process of the air chamber in the adjustment mechanism is achieved by adjusting the air pressure of the air source, the diameter of the air supply pipeline, the length of the pipeline, and the orifice diameter of the orifice plate in the air path, so as to realize the impulse control of the integrated push-pump air-driven separation mechanism.

7. The impulse-controllable integrated pneumatic-driven separation mechanism according to claim 1, characterized in that: A boss with external threads is provided at the center of the separation cylinder. The root of the boss is lower than the rest of the end face of the separation cylinder to form a groove. The inner wall of the ball socket sleeve is provided with internal threads and is connected to the boss by threads.

8. The impulse-controllable integrated pneumatic-driven separation mechanism according to claim 1, characterized in that: The inner wall of the outer sleeve is provided with a boss at the bottom of the thread. The central push rod boss has two steps. The lower step with a smaller diameter is used to achieve radial limiting of the split nut, and the upper step with a larger diameter is used together with the inner wall boss of the outer sleeve to axially limit the split nut before separation.

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