Rocket booster recovery parachute structure

Abstract

The utility model relates to the technical field of spacecraft recovery, in particular to a rocket booster recovery parachute structure which comprises a booster front section shell. A plurality of limiting grooves are formed in the inner wall of the fixing base, a plurality of notches are formed in the top of the fixing base and communicate with the tail ends of the corresponding limiting grooves, and a plurality of limiting holes are formed in the top of the fixing base; a plurality of limiting blocks are fixed to the outer wall of the umbrella popping cylinder, penetrate through the notches and are inserted into the tail ends of the limiting grooves. When the parachute ejection barrel is installed, the limiting block is inserted into the limiting groove, the parachute ejection barrel is stably connected with the booster front section shell under the insertion matching of the limiting rod and the limiting hole, and then the installation firmness of the parachute system is guaranteed; and the limiting rods are separated from the limiting holes, and the parachute cylinder is rotated, so that the limitation and fixation of the parachute cylinder can be relieved, the parachute cylinder can be quickly disassembled, and the difficulty of disassembling or maintaining the parachute system after the rocket booster is recovered is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to spacecraft recovery technical field, concretely is rocket booster recovery parachute structure. BACKGROUND

[0002] Rocket booster is a kind of small rocket engine for missile, rocket etc. when launching makes it fly away from launcher and accelerate to reach predetermined flight speed, generally divided into liquid rocket booster and solid rocket booster two types;Rocket booster recovery technology is an important technology in the field of spaceflight, it can realize the reuse of rocket booster, thereby greatly reduces the space launch cost;Parachute is one of the common speed reduction devices in rocket recovery process. It can slow down the descent speed of rocket booster when returning to the ground, thereby ensuring safe landing. When rocket booster separates and returns to the ground, parachute system starts to work. First, the parachute is opened and filled with air to form a drag area;Then, as the descent speed of rocket booster increases, the drag provided by the parachute also gradually increases;Finally, when the rocket booster approaches the ground, the drag of the parachute is enough to slow it down and land safely.

[0003] The parachute system is usually composed of canopy, parachute rope, parachute opening mechanism and control system etc., wherein the ejection-chute cylinder is an important component structure of the parachute opening mechanism, which is mainly used for storing the parachute and ejecting the parachute when needed;At present, the ejection-chute cylinder is installed at the front end cone of the rocket booster by multiple bolts during installation, although this installation method ensures the firmness of installation, but it has the problem of inconvenient disassembly and assembly, especially after the recovery of the rocket booster, when the ejection-chute cylinder and other structures need to be disassembled or maintained, this installation method will be particularly cumbersome and inconvenient, in view of this, we propose the rocket booster recovery parachute structure. SUMMARY

[0004] The utility model aims at at least one of the technical problems in the related art to some extent. To this end, one purpose of the utility model is to propose a rocket booster recovery parachute structure, by making multiple limiting rods disengage from limiting holes and rotating the ejection-chute cylinder, the limitation and fixation of the ejection-chute cylinder can be released, and the quick disassembly of the ejection-chute cylinder is realized.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] The rocket booster recovery parachute structure comprises a booster front section shell, a detachable connecting ring is installed at the inner wall of the booster front section shell, a fixed seat is coaxially fixed at the top end of the connecting ring, a plurality of limiting grooves are formed in the inner wall of the fixed seat, a plurality of notches are formed in the top of the fixed seat, the notches are communicated with the ends of the corresponding limiting grooves, and a plurality of limiting holes are formed in the top of the fixed seat;

[0007] The opening of the fixed seat is provided with a pop-out parachute cylinder for popping out a parachute, and the top of the pop-out parachute cylinder is provided with a convex ring; the outer wall of the pop-out parachute cylinder is fixed with a plurality of limiting blocks, the limiting blocks pass through the gaps and are inserted into the ends of the limiting grooves; the outer wall of the pop-out parachute cylinder is fixed with a plurality of hollow box bodies, the inner cavities of the box bodies are slidingly provided with liftable sliding blocks, the center of the sliding blocks is coaxially fixed with a limiting rod, the upper and lower ends of the limiting rod pass through the upper and lower ends of the box bodies, the bottom end of the limiting rod is inserted into the corresponding limiting hole in a plug-fit manner, and the outer part of the limiting rod is provided with a spring for abutting against the sliding block;

[0008] The upper part of the pop-out parachute cylinder is provided with a pop-out parachute, and the bottom end of the parachute is fixed with a plurality of parachute ropes, and the bottom end of the parachute rope is fixedly connected with the convex ring.

[0009] In addition, the rocket booster recovery parachute structure according to the application can also have the following additional technical features:

[0010] Specifically, the top of the convex ring is provided with a plurality of fixing holes for fixing the parachute ropes, and the number of the fixing holes is the same as that of the parachute ropes.

[0011] Specifically, the limiting grooves are arc-shaped in overall shape, and the size of the limiting grooves is matched with that of the limiting blocks.

[0012] Specifically, the top end of the limiting rod is coaxially fixed with a limiting plate, the top end of the limiting plate is tightly welded with an ear plate, and the ear plate is provided with a pulling hole.

[0013] Specifically, the inner wall of the connecting ring is provided with a plurality of fixing bolts, and the ends of the fixing bolts are threadedly connected with the inner wall of the booster front shell.

[0014] Specifically, the fixed seat and the connecting ring are an integral structure, and the cross section of the fixed seat is ring-shaped.

[0015] Specifically, the sliding block and the limiting rod are an integral structure, and the size of the sliding block is matched with the size of the opening of the box body.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] Through the limiting blocks, the limiting grooves, the limiting rods and other structures, when the pop-out parachute cylinder is installed, the limiting blocks are inserted into the limiting grooves, and the pop-out parachute cylinder and the booster front shell are stably connected through the plug-fit cooperation of the limiting rods and the limiting holes, thereby ensuring the installation firmness of the parachute system; when the pop-out parachute cylinder needs to be disassembled later, the plurality of limiting rods are separated from the limiting holes and the pop-out parachute cylinder is rotated, so that the limitation and fixation of the pop-out parachute cylinder are released, thereby realizing the quick disassembly of the pop-out parachute cylinder and reducing the difficulty of disassembling or maintaining the parachute system after the rocket booster is recovered. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the whole structure schematic view of the utility model;

[0019] Figure 2 It is the structure schematic view of the booster front section shell in the utility model;

[0020] Figure 3 It is the partial structure schematic view in the utility model;

[0021] Figure 4 It is the structure schematic view of the fixed seat in the utility model;

[0022] Figure 5 It is the structure schematic view of the parachute cylinder in the utility model;

[0023] Figure 6 It is the structure schematic view of the box body in the utility model;

[0024] In the drawing,

[0025] 1, booster front section shell;10, connecting ring;11, fixed bolt;12, fixed seat;120, limit slot;121, notch;122, limit hole;

[0026] 2, parachute cylinder;20, convex ring;200, fixed hole;21, limit block;22, box body;23, sliding block;24, limit rod;25, spring;26, limit plate;27, ear plate;

[0027] 3, parachute;30, umbrella rope. Specific implementation

[0028] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0029] The embodiment provides a kind of technical scheme:

[0030] Please refer to Figures 1-6As shown, the rocket booster recovery parachute structure includes a booster front section shell 1, a detachable connecting ring 10 is installed at the inner wall of the booster front section shell 1, a fixed seat 12 is coaxially fixed at the top end of the connecting ring 10, a plurality of limiting grooves 120 are opened at the inner wall of the fixed seat 12, a plurality of notches 121 are opened at the top of the fixed seat 12, the notches 121 are communicated with the ends of the corresponding limiting grooves 120, and a plurality of limiting holes 122 are opened at the top of the fixed seat 12; a pop-out parachute 3 is installed at the opening of the fixed seat 12, a convex ring 20 is installed at the top of the pop-out parachute 2; a plurality of limiting blocks 21 are fixed on the outer wall of the pop-out parachute 2, the limiting blocks 21 pass through the notches 121 and are inserted into the ends of the limiting grooves 120; a plurality of hollow box bodies 22 are fixed on the outer wall of the pop-out parachute 2, a lifting slide block 23 is slidingly installed in the inner cavity of the box body 22, a limiting rod 24 is coaxially fixed at the center of the slide block 23, the upper and lower ends of the limiting rod 24 pass through the upper and lower ends of the box body 22, the bottom end of the limiting rod 24 is inserted into the corresponding limiting hole 122, and a spring 25 for abutting against the slide block 23 is arranged on the outer portion of the limiting rod 24; a pop-out type parachute 3 is arranged above the pop-out parachute 2, a plurality of parachute ropes 30 are fixed at the bottom end of the parachute 3, and the bottom end of the parachute rope 30 is fixedly connected with the convex ring 20.

[0031] In the embodiment, a plurality of fixing holes 200 for fixing the parachute ropes 30 are opened at the top of the convex ring 20, and the number of the fixing holes 200 is the same as that of the parachute ropes 30. The design is beneficial to fixing the corresponding number of the parachute ropes 30 through the fixing holes 200.

[0032] In the embodiment, the overall shape of the limiting groove 120 is arc-shaped, and the size of the limiting groove 120 is matched with that of the limiting block 21. The design is beneficial to stably connecting the limiting block 21 with the limiting groove 120, thereby ensuring the installation stability of the pop-out parachute 2.

[0033] In the embodiment, the top end of the limiting rod 24 is coaxially fixed with a limiting plate 26, the top end of the limiting plate 26 is tightly welded with an ear plate 27, and a pulling hole is opened in the ear plate 27. The design makes the limiting rod 24 have the advantage of being convenient to pull, thereby being beneficial to adjusting the height of the limiting rod 24.

[0034] In the embodiment, a plurality of fixed bolts 11 are arranged at the inner wall of the connecting ring 10, and the ends of the fixed bolts 11 are threadedly connected with the inner wall of the booster front section shell 1. The arrangement of the plurality of fixed bolts 11 ensures the connection firmness and stability between the connecting ring 10 and the booster front section shell 1, thereby ensuring the strength of the overall structure.

[0035] In the embodiment, the fixing seat 12 and the connecting ring 10 are integrally formed, and the fixing seat 12 has a ring shape in cross section. The integrally formed fixing seat 12 and the connecting ring 10 have better connecting strength, thereby ensuring the mounting stability between the fixing seat 12 and the connecting ring 10 and the bearing capacity of the fixing seat 12 and the connecting ring 10.

[0036] In the embodiment, the sliding block 23 and the limiting rod 24 are integrally formed, and the sliding block 23 has a size suitable for the opening size of the box body 22. The integrally formed sliding block 23 and the limiting rod 24 have better connecting strength, thereby ensuring the connecting firmness between the sliding block 23 and the limiting rod 24 and the overall fixing effect of the limiting rod 24 on the parachute cylinder 2; and the suitable size ensures the stability of the sliding block 23 and the limiting rod 24.

[0037] It can be understood that the placement mode and the ejection mode of the parachute 3 in the parachute cylinder 2 in the embodiment are all conventional technologies, and the principle is known to those skilled in the art, which will not be described here.

[0038] It should be noted that the bottom end of the parachute rope 30 and the fixing hole 200 in the embodiment can be connected and fixed by means of lashing or rivet fixing, thereby ensuring the connecting stability between the parachute rope 30 and the parachute cylinder 2 and the stability and safety of the rocket booster during landing.

[0039] When the parachute cylinder 2 needs to be disassembled, the user first lifts the plurality of ear plates 27 upward at the same time, the ear plates 27 drive the limiting rod 24 and the sliding block 23 to move upward, and the spring 25 is compressed by the sliding block 23, at this time, the bottom end of the limiting rod 24 is separated from the limiting hole 122, then the user rotates the parachute cylinder 2, and the limiting block 21 slides along the limiting groove 120, when the limiting block 21 slides to the notch 121, the user lifts the parachute cylinder 2 upward, and the limiting block 21 is separated from the limiting groove 120, so that the parachute cylinder 2 can be disassembled.

[0040] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the utility model and do not limit the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A rocket booster recovery parachute structure comprising a booster forebody shell (1) characterised in that: The inner wall of the booster front section shell (1) is provided with a detachable connecting ring (10), the top end of the connecting ring (10) is coaxially fixed with a fixing seat (12), the inner wall of the fixing seat (12) is provided with a plurality of limiting grooves (120), the top of the fixing seat (12) is provided with a plurality of notches (121), the notches (121) are in communication with the ends of the corresponding limiting grooves (120), and the top of the fixing seat (12) is provided with a plurality of limiting holes (122). The opening of the fixing seat (12) is provided with a parachute ejection cylinder (2) for ejecting a parachute (3), and the top of the parachute ejection cylinder (2) is provided with a convex ring (20); the outer wall of the parachute ejection cylinder (2) is fixed with a plurality of limiting blocks (21), the limiting blocks (21) pass through the notches (121) and are inserted into the ends of the limiting grooves (120); the outer wall of the parachute ejection cylinder (2) is fixed with a plurality of hollow box bodies (22), the inner cavity of the box body (22) is slidably provided with a liftable sliding block (23), the center of the sliding block (23) is coaxially fixed with a limiting rod (24), the upper and lower ends of the limiting rod (24) pass through the upper and lower ends of the box body (22), the bottom end of the limiting rod (24) is inserted into the corresponding limiting hole (122) in a matched mode, and the outer portion of the limiting rod (24) is provided with a spring (25) for abutting against the sliding block (23). The upper portion of the parachute ejection cylinder (2) is provided with a parachute (3) in a ejection mode, the bottom end of the parachute (3) is fixed with a plurality of parachute ropes (30), and the bottom end of the parachute rope (30) is fixedly connected with the convex ring (20).

2. The rocket booster recovery parachute structure of claim 1, wherein: The top of the convex ring (20) is provided with a plurality of fixing holes (200) for fixing the parachute ropes (30), and the number of the fixing holes (200) is the same as that of the parachute ropes (30).

3. The rocket booster recovery parachute structure of claim 1, wherein: The limiting grooves (120) are arc-shaped in overall shape, and the size of the limiting grooves (120) is matched with that of the limiting blocks (21).

4. The rocket booster recovery parachute structure of claim 1, wherein: The top end of the limiting rod (24) is coaxially fixed with a limiting plate (26), the top end of the limiting plate (26) is tightly welded with an ear plate (27), and the ear plate (27) is provided with a pulling hole.

5. The rocket booster recovery parachute structure of claim 1, wherein: The inner wall of the connecting ring (10) is provided with a plurality of fixing bolts (11), and the ends of the fixing bolts (11) are threadedly connected with the inner wall of the booster front section shell (1).

6. The rocket booster recovery parachute structure of claim 1, wherein: The fixing seat (12) and the connecting ring (10) are an integral molding structure, and the cross section of the fixing seat (12) is annular.

7. The rocket booster recovery parachute structure of claim 1, wherein: The sliding block (23) and the limiting rod (24) are an integral molding structure, and the size of the sliding block (23) is matched with the opening size of the box body (22).

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