A rocket main bundling structure

Abstract

The present invention discloses a rocket main binding structure, which belongs to the technical field of boost separation of binding rockets, and comprises: a main binding structure, a main binding rod and a limiting device; the main binding structure is fixedly arranged on the core stage; the main binding structure comprises a ball socket of a hemispherical structure; the opening of the ball socket is arranged on the outer wall of the segment shell; a ball head is fixedly arranged at the end of the main binding rod; the ball head is adapted to the ball socket and arranged in the ball socket; the limiting device is configured to limit the ball head when the rocket main binding structure is in a locked state, and prevent the ball head from escaping from the ball socket; after the rocket main binding structure is adjusted to an unlocked state, the limiting of the ball head is released, so that the ball head can be escaping from the ball socket. The present invention can realize boost separation unlocking in a non-pyrotechnic way, avoids the production capacity and safety restrictions of using pyrotechnics, and meets the needs of the commercial aerospace field.

Description

Technical Field

[0001] The invention relates to the technical field of booster separation of bundled rockets, and in particular to a rocket main bundling structure. Background Art

[0002] The main functions of the rocket's main bundling structure include two aspects: one is the transfer of the payload, and the other is the ability to achieve reliable unlocking and disengagement when the booster stage separates.

[0003] The existing separation unlocking methods are mainly designed with point and line pyrotechnics as their core energy sources. This has certain advantages after years of accumulation.

[0004] In daily practice, the inventors found that the existing technical solutions have the following problems:

[0005] Due to the special inherent properties of pyrotechnics and the fact that the pyrotechnics they use are subject to certain production capacity and safety restrictions, it is difficult to meet the needs of the commercial aerospace sector while ensuring the launch mission.

[0006] In view of this, it is necessary to provide a new technical solution to solve the above problems. Summary of the invention

[0007] In order to solve the above-mentioned technical problems, the present application provides a rocket main bundling structure that can achieve booster separation and unlocking in a non-pyrotechnic manner, avoiding the production capacity and safety limitations of the use of pyrotechnics and meeting the needs of the commercial aerospace field.

[0008] A rocket main bundling structure, comprising:

[0009] A main binding structure; the main binding structure is fixedly arranged on the core stage; the main binding structure comprises a ball socket of a hemispherical structure; the opening of the ball socket is arranged on the outer wall of the segment shell;

[0010] A main binding rod; a ball head is fixedly provided at the end of the main binding rod; the ball head is adapted to the ball socket and is arranged in the ball socket;

[0011] A limiting device; the limiting device is configured to limit the ball head when the main binding structure of the rocket is in a locked state, thereby preventing the ball head from escaping from the ball socket; after the main binding structure of the rocket is adjusted to an unlocked state, the limiting device on the ball head is released, allowing the ball head to escape from the ball socket.

[0012] Preferably, the limiting device comprises:

[0013] Block pressure ring; the block pressure ring main body is arranged outside the segment shell, and is slidably connected with the segment shell along the radial direction of the core stage;

[0014] A ball stopper; the ball stopper is hinged to the segment housing; the stopper pressure ring is in transmission connection with the ball stopper, driving the ball stopper to rotate along the hinge axis, so that the ball stopper is in a locked position or an unlocked position;

[0015] When the ball head stopper is in the locking position, the ball head stopper blocks the ball head at least along the axial direction of the main binding rod to prevent the ball head from falling out of the ball socket;

[0016] When the ball head stopper is in the unlocking position, the ball head stopper is separated from the ball head surface and forms an escape space for the ball head to escape from the ball socket.

[0017] Preferably, the limiting device further comprises a locking mechanism for maintaining the ball head stopper in a locked position and an unlocking mechanism for pushing the ball head stopper into an unlocked position;

[0018] The locking mechanism is arranged inside the segment housing; the locking mechanism is configured to achieve the stability of the position of the ball head stopper in the axial direction of the main binding rod by relying on the locking force generated by it or relying on the support of its own structure;

[0019] The unlocking mechanism is transmission-connected to the block pressure ring; the unlocking mechanism is configured to overcome the locking force of the locking mechanism or destroy the structure of the locking mechanism to drive the block pressure ring to slide relative to the segment housing and push the ball head block into an unlocking position.

[0020] Preferably, the unlocking mechanism includes a thrust component and a transmission component; the thrust component is connected to the block pressure ring through the transmission component, and the thrust force is applied to the block pressure ring to push the ball head block into the unlocking position.

[0021] Preferably, the pushing component is a gas pushing component or an elastic pushing component.

[0022] Preferably, the block pressure ring also includes a plurality of sliding rods; the locking mechanism includes a limiting cap; the sliding rod passes through the section shell, one end of the sliding rod is fixedly connected to the block pressure ring, and the other end of the sliding rod extends into the interior of the section shell; the limiting cap is fixedly connected to the sliding rod extending into the interior of the section shell.

[0023] Preferably, the locking mechanism further includes a preload spring; the preload spring is arranged on the outer circumference of the slide rod and between the limiting cap and the inner wall of the segment shell.

[0024] Preferably, the limiting device also includes: a first connecting rod for transmission connection between the block pressure ring and the ball head stopper; one end of the first connecting rod is hinged to the block pressure ring; and the other end of the first connecting rod is hinged to the ball head stopper.

[0025] Preferably, a slide slot hole is provided on the ball head stopper; and the first connecting rod is hinged to the ball head stopper via a hinge shaft provided in the slide slot hole.

[0026] Preferably, the ball head stopper has multiple pieces; the multiple ball head stoppers are evenly distributed around the circumference of the ball head with the axis of the main binding rod as the center.

[0027] Compared with the prior art, this application has at least the following beneficial effects:

[0028] 1. The rocket main bundle structure of the present invention can realize booster separation and unlocking in a non-pyrotechnic way while satisfying the main bundle load transfer, avoiding the production capacity and safety limitations of using pyrotechnics and meeting the needs of the commercial aerospace field.

[0029] 2. The rocket main bundling structure of the present invention has a simple structure, a small number of parts, low processing cost and high processing efficiency.

[0030] 3. The rocket main binding structure of the present invention can be in a self-stabilizing structure in both the locked state and the unlocked state, and has high movement reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0032] Figure 1 This is a schematic diagram of the overall structure of the rocket main bundling structure of the present invention;

[0033] Figure 2 It is a partial enlarged view of the limiting device when the main binding structure of the rocket of the present invention is in a locked state;

[0034] Figure 3 It is a partial enlarged view of the limiting device when the main binding structure of the rocket of the present invention is in the unlocked state.

[0035] The above drawings include the following reference numerals:

[0036] 1. Segment shell; 2. Main binding structure; 3. Limiting cap; 4. Preload spring; 5. Block pressure ring; 6. First connecting rod; 7. Ball head block; 8. Main binding rod; 9. Ball socket; 10. Ball head; 11. Rotating pin; 51. Block pressure ring body; 52. Block pressure ring finger; 53. Slide rod; 71. Block body; 72. Ball head stop surface; 73. Slide slot hole. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0038] like Figures 1 to 3 As shown, a rocket main binding structure comprises: a main binding structure 2, a main binding rod 8 and a limiting device;

[0039] The main binding structure 2 is fixedly arranged on the core stage; the main binding structure 2 includes a ball socket 9 of a hemispherical structure; the opening of the ball socket 9 is arranged on the outer wall of the segment shell 1;

[0040] A ball head 10 is fixedly provided at the end of the main binding rod 8; the ball head 10 is adapted to the ball socket 9 and is arranged in the ball socket 9;

[0041] The limiting device is configured to limit the ball head 10 when the main binding structure of the rocket is in a locked state, preventing the ball head 10 from escaping from the ball socket 9; after the main binding structure of the rocket is adjusted to an unlocked state, the limiting of the ball head 10 is released, allowing the ball head 10 to escape from the ball socket 9.

[0042] The limiting device includes a stopper pressing ring 5 and a ball stopper 7. The main part of the stopper pressing ring 5 is arranged outside the segment shell 1, and is slidably connected to the segment shell 1 along the core radial direction. The ball stopper 7 is hinged to the segment shell 1 or the main bundling structure 2 through a rotating pin 11. That is, a hinge seat with a through hole is arranged on the side of the segment shell 1 or the main bundling structure 2, and the rotating pin 11 passes through the through hole and penetrates both the ball stopper 7 and the hinge seat, so as to realize the hinge between the ball stopper 7 and the segment shell 1 or the main bundling structure 2.

[0043] The block pressure ring 5 is in transmission connection with the ball head block 7, driving the ball head block 7 to rotate along the hinge axis, so that the ball head block 7 is in a locked position or an unlocked position. When the ball head block 7 is in the locked position, the ball head block 7 blocks the ball head 10 at least along the axial direction of the main binding rod 8 to prevent the ball head 10 from escaping from the ball socket 9. When the ball head block 7 is in the unlocked position, the ball head block 7 is separated from the surface of the ball head 10 and forms an escape space for the ball head 10 to escape from the ball socket 9.

[0044] As an embodiment of the present invention, the limiting device further comprises a first connecting rod 6. The stopper pressing ring 5 and the ball stopper 7 are connected to each other by transmission via the first connecting rod 6. One end of the first connecting rod 6 is hinged to the stopper pressing ring 5, and the other end is hinged to the ball stopper 7.

[0045] The stopper pressing ring 5 includes a stopper pressing ring body 51 and a stopper pressing ring finger 52. The stopper pressing ring body 5 is arranged outside the segment housing 1 and is slidably connected to the segment housing 1 along the core stage radial direction. The stopper pressing ring finger 52 is away from the segment housing 1 and is fixedly connected to the stopper pressing ring finger 52. The stopper pressing ring finger 52 has the same number as the ball head stopper 7, and is used to drive the ball head stopper 7 to rotate the rotating pin 11 under the drive of the stopper pressing ring body 51.

[0046] The ball stopper 7 includes a stopper body 71, a ball stopper surface 72 and a slide slot hole 73. The slide slot hole 73 is a long hole groove that penetrates the stopper body 71. The first connecting rod 6 is hinged to the ball stopper 7 through a hinge shaft arranged in the slide slot hole 73. At the same time, relying on the arrangement of the slide slot hole 73, the connecting end of the first connecting rod 6 can slide in the slide slot hole 73. In addition, in order to ensure that the ball stopper 7 can rotate around the rotating pin 11 driven by the stopper pressing ring 5, the axis of the rotating pin 11, the axis of the hinge shaft between the first connecting rod 6 and the ball stopper 7, and the axis of the hinge shaft between the first connecting rod 6 and the stopper pressing ring 5 are parallel to each other, and the three form a triangle on their vertical planes.

[0047] In actual use, the length of the slide slot hole 73 can be set and adjusted according to the sliding distance of the stopper pressing ring 5 and the rotation angle of the ball head stopper 7 .

[0048] During the process of the block pressure ring 5 moving radially outward along the core stage, the connection between the first connecting rod 6 and the block pressure ring 5 moves synchronously with the block pressure ring 5. At the same time, under the connecting action of the first connecting rod 6, the ball head block 7 is driven to rotate around the rotating pin 11, so that the ball head block 7 moves from the locked position to the unlocked position.

[0049] When the ball head stopper 7 is in the locked position, the ball head stopper surface 72 is in close contact with the ball head 10 , and the stopper body 71 blocks the ball head 10 axially in the main binding rod 8 , thereby effectively preventing the ball head 10 from falling out of the ball socket 9 .

[0050] When the ball head stopper 7 is in the unlocked position, the stopper body 71 rotates around the rotating pin 11 until the ball head stopper surface 72 is in a non-contact state with the ball head 10, and in the axial direction of the main binding rod 8, the ball head stopper surface 72 is outside the movement path of the edge of the ball head 10, so that the ball head stopper 7 is separated from the surface of the ball head 10 and forms an escape space for the ball head 10 to escape from the ball socket 9, thereby preventing the ball head 10 from being obstructed when escaping from the ball socket 9.

[0051] In addition, to ensure that the ball stopper 7 can be in the locked position and the unlocked position, the limiting device also includes a locking mechanism for maintaining the ball stopper 7 in the locked position and an unlocking mechanism for pushing the ball stopper 7 into the unlocked position.

[0052] The locking mechanism is arranged inside the segment housing 1; the locking mechanism is configured to achieve the stability of the position of the ball head stopper 7 in the axial direction of the main binding rod 8 by relying on the locking force generated by it or relying on the support of its own structure;

[0053] The unlocking mechanism is transmission-connected to the stopper pressing ring 5; the unlocking mechanism is configured to overcome the locking force of the locking mechanism or destroy the structure of the locking mechanism to drive the stopper pressing ring 5 to slide relative to the segment housing 1 and push the ball head stopper 7 into the unlocking position.

[0054] Among them, the unlocking mechanism includes a pushing component and a transmission component; the pushing component is connected to the block pressure ring 5 through the transmission component, and the pushing force is applied to the block pressure ring 5 to push the ball head block 7 into the unlocking position.

[0055] In another embodiment of the present invention, the block pressure ring 5 also includes a plurality of slide bars 53 that penetrate the segment shell 1. The slide bars 53 are slidably connected to the segment shell 1 and the main binding structure 2 in the radial direction of the core stage. One end of the slide bar 53 is fixedly connected to the block pressure ring body 51, and the other end extends into the interior of the segment shell 1. The connecting end of the slide bar 53 and the block pressure ring body 51 is the opposite end of the connection between the block pressure ring finger 52 and the block pressure ring body 51. That is, the block pressure ring body 51 is fixedly connected to the slide bar 53 on the side close to the core stage, and is fixedly connected to the block pressure ring finger 52 on the side away from the core stage.

[0056] The locking mechanism includes a limiting cap 3, which is fixedly connected to a slide rod 53 extending into the interior of the section housing 1. The block pressure ring 5 can be in a stable state under the limiting action of the limiting cap 3. In this state, since the position of the block pressure ring 5 will not change, the block body 71 can be limited by the tensioning action of the first connecting rod 6, and the ball head blocking surface 72 is in close contact with the ball head 10. By relying on the blocking action of the block body 71 on the axial direction of the main binding rod 8 on the ball head 10, when the ball head block 7 is in the locked position, the ball head 10 is effectively prevented from falling out of the ball socket 9.

[0057] When unlocking is required, the thrust force generated by the thrust component is transmitted to the slide bar 53 by the transmission component, and the limiting cap 3 or the connection between the limiting cap 3 and the slide bar 53 is destroyed, causing the limiting cap 3 to lose its limiting function, thereby causing the slide bar 53 to push the block pressure ring body 51 to move, and the block body 71 to rotate, and the ball head block 7 rotates to the unlocking position, ensuring that the ball head 10 can be released from the ball socket 9. It should be noted that the thrust component needs to have a sufficiently large thrust force to destroy the limiting cap 3, and after the limiting cap 3 is destroyed, it can push the slide bar 53 to move radially along the core stage to ensure that the ball head block 7 enters the unlocking position.

[0058] In other embodiments of the present invention, the thrust component is a gas-propelled component that stores high-pressure gas. After the pipeline between the high-pressure gas cylinder and the actuating component is connected, the high-pressure gas generates a thrust force to push the corresponding actuating component to move.

[0059] In other embodiments of the present invention, the push-pushing component is an elastic push-pushing component, such as a pre-compressed compression spring or a gas spring. The elastic push-pushing component relies on the push-pushing force generated when decompressing to push the action component to move, providing power for the ball head stopper 7 to enter the unlocking position.

[0060] In other embodiments of the present invention, the transmission component is a crank slider mechanism, a multi-link mechanism, a worm gear mechanism, a gear transmission mechanism, a chain transmission mechanism, or a combination thereof. It should be noted that, under the premise that the thrust force generated by the thrust component can be transmitted to the block pressing ring 5 and the block pressing ring 5 can be ensured to have a sufficient stroke, the existing transmission mechanism can be applied to the present invention. Since the transmission mechanism belongs to an existing mature solution, it will not be repeated here.

[0061] As another embodiment of the present invention, the locking mechanism also includes a preload spring 4, which is sleeved on the outer circumference of the slide rod 53 and is arranged between the limit cap 3 and the inner wall of the segment housing 1. The locking mechanism relies on the elastic force of the preload spring 4 and the limit cap 3 to ensure that the block pressure ring 5 is in a stable state. In this state, since the position of the block pressure ring 5 does not change, the block body 71 can be limited by the tensioning effect of the first connecting rod 6, and the ball head blocking surface 72 is in close contact with the ball head 10. The block body 71 relies on the axial blocking effect of the main binding rod 8 on the ball head 10, so that when the ball head block 7 is in the locked position, the ball head 10 is effectively prevented from falling out of the ball socket 9.

[0062] Due to the setting of the preload spring 4, when using the unlocking mechanism to unlock, it is only necessary to ensure that the force generated by the thrust component transmitted by the transmission component can overcome the elastic force of the preload spring 4 and push the block pressure ring 5 to a sufficient stroke, which greatly reduces the requirements for the thrust component and the transmission component, effectively reduces the weight of the unlocking mechanism itself, and ensures the carrying capacity of the rocket.

[0063] As another embodiment of the present invention, the ball head stopper 7 has multiple pieces; the multiple ball head stoppers 7 are evenly distributed around the ball head 10 with the axis of the main binding rod 8 as the center. The multiple ball head stoppers 7 can provide a more uniform locking support force to the ball head 10, reducing the strength and stiffness requirements of a single ball head stopper 7. At the same time, the multiple ball head stoppers 7 are evenly distributed, so that the multiple ball head stoppers 7 form limiting points located on the same circle in the contact area with the ball head 10. The multiple limiting points limit and fix the ball head 10, forming a ring-type structure, thereby improving the locking effect.

[0064] Preferably, the number of the ball head stoppers 7 is not less than 3. The contact areas of the ball head stoppers 7 and the ball head 10 of more than 3 pieces can form the same limiting surface, thereby improving the stability of locking the ball head 10.

[0065] A rocket main bundling structure, when in operation, comprises:

[0066] Before separation begins, the entire system is in a self-locking state, that is, when the ball head 10 has a radial force to move outward, the force of the ball head stopper 7 pushing the stopper pressure ring 5 has no outward component, so the system is in a stable state.

[0067] When separation begins, the thrust components and transmission components in the segment housing 1 apply a thrust force to the stopper pressing ring 5, which overcomes the elastic force of the preload spring 4 or the limiting effect of the limiting cap 3 to enable the stopper pressing ring 5 to translate radially outward along the core stage.

[0068] After the separation begins, as the block pressure ring 5 moves outward, it drives the first connecting rod 6 to pull the ball head block 7 outward to open until the end of the movement. The ball head block 7 no longer has an axial blocking effect on the ball head 10 on the main binding rod 8, and the ball head 10 escapes from the ball socket 9, realizing the separation and unlocking of the rocket main binding structure by non-pyrotechnic means.

[0069] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0070] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0071] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rocket main bundling structure, characterized in that: include: A main binding structure; the main binding structure is fixedly arranged on the core stage; the main binding structure comprises a ball socket of a hemispherical structure; the opening of the ball socket is arranged on the outer wall of the segment shell; A main binding rod; a ball head is fixedly provided at the end of the main binding rod; the ball head is adapted to the ball socket and is arranged in the ball socket; A limiting device; the limiting device is configured to limit the ball head when the rocket main binding structure is in a locked state, thereby preventing the ball head from falling out of the ball socket; After the main binding structure of the rocket is adjusted to an unlocked state, the restriction on the ball head is released so that the ball head can be released from the ball socket; The limiting device comprises: Block pressure ring; the block pressure ring main body is arranged outside the segment shell, and is slidably connected with the segment shell along the radial direction of the core stage; A ball stopper; the ball stopper is hinged to the segment housing or the main binding structure; the stopper pressure ring is in transmission connection with the ball stopper, driving the ball stopper to rotate along the hinge axis, so that the ball stopper is in a locked position or an unlocked position; When the ball head stopper is in the locking position, the ball head stopper blocks the ball head at least along the axial direction of the main binding rod to prevent the ball head from falling out of the ball socket; When the ball head stopper is in the unlocking position, the ball head stopper is separated from the ball head surface and forms an escape space for the ball head to escape from the ball socket; The limiting device further comprises: a first connecting rod for transmission connection between the block pressure ring and the ball head block; one end of the first connecting rod is hinged to the block pressure ring; the other end of the first connecting rod is hinged to the ball head block; the block pressure ring comprises a block pressure ring body and a block pressure ring finger; The ball head stopper includes a stopper body, a ball head stopper surface and a slide slot hole; the slide slot hole is a long hole slot penetrating the stopper body; the first connecting rod is hinged to the ball head stopper through a hinge shaft arranged in the slide slot hole; at the same time, relying on the arrangement of the slide slot hole, the connecting end of the first connecting rod can slide in the slide slot hole; The block pressure ring also includes a number of sliding rods that penetrate the segment shell; the sliding rods are slidably connected to the segment shell and the main binding structure in the radial direction of the core stage; one end of the sliding rod is fixedly connected to the block pressure ring body, and the other end extends into the interior of the segment shell; the block pressure ring body is fixedly connected to the sliding rod on the side close to the core stage, and is fixedly connected to the block pressure ring finger on the side away from the core stage.

2. The rocket main binding structure according to claim 1, characterized in that: The limiting device further comprises a locking mechanism for maintaining the ball stopper in a locked position and an unlocking mechanism for pushing the ball stopper into an unlocked position; The locking mechanism is arranged inside the segment housing; the locking mechanism is configured to achieve the stability of the position of the ball head stopper in the axial direction of the main binding rod by relying on the locking force generated by it or relying on the support of its own structure; The unlocking mechanism is transmission-connected to the block pressure ring; the unlocking mechanism is configured to overcome the locking force of the locking mechanism or destroy the structure of the locking mechanism to drive the block pressure ring to slide relative to the segment housing and push the ball head block into an unlocking position.

3. The rocket main binding structure as claimed in claim 2, characterized in that: The unlocking mechanism includes a thrust component and a transmission component; the thrust component is connected to the block pressure ring through the transmission component, and the thrust force is applied to the block pressure ring to push the ball head block into the unlocking position.

4. The rocket main binding structure as claimed in claim 3, characterized in that: The pushing component is a gas pushing component or an elastic pushing component.

5. The rocket main binding structure as claimed in claim 2, characterized in that: The locking mechanism comprises a limiting cap; the limiting cap is fixedly connected to a sliding rod extending into the interior of the segment housing.

6. The rocket main binding structure as claimed in claim 5, characterized in that: The locking mechanism further comprises a preload spring; the preload spring is arranged on the outer circumference of the slide rod and between the limiting cap and the inner wall of the segment housing.

7. The rocket main binding structure according to any one of claims 1 to 6, characterized in that: The ball head stopper has multiple pieces; the multiple ball head stoppers are evenly distributed around the ball head with the axis of the main binding rod as the center.

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