Multi-array in-line baffle buffer
By installing a multi-array baffle-type buffer in the groove of the inner wall of the launch tube, the plastic deformation of the baffle absorbs kinetic energy and releases gas pressure, solving the problems of large gap, heavy weight and unstable buffering stroke of the shovel-type coiled buffer, and realizing efficient and low-impact buffering for missile launch.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI INST OF ELECTROMECHANICAL ENG
- Filing Date
- 2023-06-25
- Publication Date
- 2026-06-09
AI Technical Summary
Existing shovel-type coiled buffers occupy a large radial clearance between the missile and the launch tube during missile launch, have large structural dimensions and weight, and unstable buffering stroke, which increases launch risk and weight, making it difficult to meet the buffering requirements of missile launch.
The multi-array embedded baffle buffer is adopted. By installing multiple rows of baffle arrays in the grooves of the inner wall of the launch tube, the plastic deformation of the baffles absorbs kinetic energy to achieve buffering and braking, and releases gas pressure through the gaps, reducing radial clearance occupation and weight. It is fixed with screws and does not require a support flange.
It achieves efficient and low-impact buffering braking within a limited space, reduces the radial clearance occupied by the launch tube, lowers the weight, improves the versatility and ease of installation of the buffer, and prevents the movable base from flying out.
Smart Images
Figure CN116817674B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of braking technology for moving objects, and more specifically, to a multi-array embedded baffle-type buffer. Background Technology
[0002] During a missile cold launch, the ejection propulsion system generates high-pressure gas that acts on the bottom of the movable base of the ejection-type storage and launch tube. This causes the movable base to support the missile body and move upwards, propelling the missile out of the tube with a certain initial velocity. A buffer installed at the tube opening uses a cushioning braking effect to retain the movable base inside the tube, preventing it from exiting and injuring personnel or damaging equipment. However, due to the large mass, high speed, and high impact energy of the movable base, the limited usable space inside the tube, and the short braking stroke of the buffer, the buffer needs to be able to achieve effective cushioning braking within a limited space and with a short braking stroke, reducing the impact force without damaging the structure of the launch tube itself.
[0003] Currently, the mainstream shock absorbers used in movable base catapults include shovel-type and coiled shock absorbers. These utilize flange rings installed at the nozzle, and the shock absorbers absorb energy by having two symmetrical buffer plates plastically coil and deform inward and upward to achieve cushioning and braking of the base. However, this type of shock absorber still has some insurmountable defects, leading to high risks, specifically:
[0004] First: It occupies a large radial clearance between the missile and the launch tube. For example, in the case of a shovel-type or coiled buffer, two buffer plates are installed inside the launch tube through flange rings. The buffer plates occupy a large portion of the radial clearance between the tube wall and the missile body. When the missile is launched, there is a certain probability that the missile will collide with the buffer plates after being disturbed during launch, which will cause launch risks.
[0005] Second: The structure is large in size and weight. For example, the shovel-type coiled buffer consists of two buffer plates and a flange ring. The size and weight of the buffer plates and flange ring are relatively large. The shovel-type coiled buffer needs to set a concave waist-shaped support platform of metal material on the movable base to achieve the coiling effect, which greatly increases the weight of the movable base.
[0006] Third: Unstable buffer stroke. For example, in shovel-type or coiled buffers, the transition between the two braking surfaces on the movable base is an acute angle, which causes the buffer stroke to be unstable, resulting in a large impact force and difficulty in braking.
[0007] Given the aforementioned shortcomings of the buffer, a new buffer needs to be designed to solve the above technical problems in order to meet the requirements of actual missile launches. Summary of the Invention
[0008] To address the shortcomings of existing technologies, the present invention aims to provide a multi-array embedded baffle buffer.
[0009] According to the present invention, a multi-array embedded baffle buffer includes a buffer base plate and multiple rows of baffle arrays arranged on the inner side of the buffer base plate and spaced apart sequentially along the length direction of the buffer base plate. Each row of the baffle array includes multiple baffles arranged at intervals, and a gap is formed between two adjacent baffles in each row of the baffle array.
[0010] The inner wall of the launch tube has multiple tube wall grooves that match the base plate of the buffer. The multiple base plates of the buffer are respectively matched and installed into the corresponding tube wall grooves, such that the baffles extend toward the center of the launch tube and protrude to the inner side of the inner wall of the launch tube. Among them, the baffles in the row of baffles array located at the mouth of the launch tube and at the far end of the buffer base plate are all limit baffles. The thickness of the limit baffles is greater than the thickness of the other baffles. The cross-section of the buffer base plate is an arc-shaped structure that matches the tube wall grooves.
[0011] When the movable base moves toward the launch tube outlet at a certain speed, it can collide with the baffle, thereby causing the baffle to undergo plastic deformation to absorb the kinetic energy of the movable base and achieve buffer braking.
[0012] The gap allows the gas flow generated by the combustion gas under the movable base to pass through, thereby releasing the pressure under the movable base.
[0013] Preferably, the thickness of the limit baffle is 2 to 3 times the thickness of the other baffles.
[0014] Preferably, the baffle is arranged perpendicular to the bottom plate of the buffer.
[0015] Preferably, both the upper and lower surfaces of the baffle are flat.
[0016] Preferably, the baffle has a fan-shaped annular structure when viewed from above.
[0017] Preferably, both ends of the buffer base plate have connecting structures, and the buffer base plate is fixed in the groove of the cylinder wall by connecting parts configured through the connecting structures.
[0018] Preferably, the buffer base plate and the baffle are integrally formed.
[0019] Preferably, a plurality of baffles are arranged at equal intervals along the length direction of the buffer base plate.
[0020] Preferably, the baffles, except for the limit baffle, have the same thickness.
[0021] Preferably, the braking of movable bases with different masses and speeds can be matched by adjusting the length of the buffer base plate, the number of arrays of baffles on the buffer base plate, the width and thickness of the baffles.
[0022] Compared with the prior art, the present invention has the following beneficial effects:
[0023] 1. This invention adopts a multi-array embedded baffle buffer, extending parts of each baffle into the inside of the cylinder, which greatly reduces the occupation of the radial gap of the cylinder spring. Moreover, the baffle adopts a multi-array form, with each array adopting a buffer form with a small envelope angle. The arc baffle is close to a flat plate, and the energy required for bending deformation is small, thus achieving a low-impact braking effect on the movable base.
[0024] 2. This invention uses multiple thin baffles to buffer and brake the movable base, and the bending resistance is basically constant, thus achieving efficient braking of the movable base with smoothness and low impact.
[0025] 3. The present invention adopts a multi-array buffer form. The gap between each row of baffles is conducive to the rapid release of gas pressure under the movable base, which solves the problem that the residual pressure at the bottom of the base further accelerates the base and causes excessive impact force.
[0026] 4. This invention uses radial screws to directly install the buffer in the cylinder wall, eliminating the need for a support flange, resulting in a small structural size and lightweight design.
[0027] 5. This invention can adapt to the braking requirements of moving bases with different masses and speeds by adjusting the array number, width (i.e., envelope angle), thickness, buffer length, and number of buffers of the buffer baffles, thus having good versatility. Attached Figure Description
[0028] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0029] Figure 1 A schematic diagram of the front structure of a multi-array embedded baffle buffer;
[0030] Figure 2 This is a schematic diagram of the side structure of a multi-array embedded baffle buffer.
[0031] Figure 3 This is a top view of the structure of a multi-array embedded baffle buffer.
[0032] Figure 4 A schematic diagram of the cross-section of a multi-array embedded baffle buffer installed in a groove in the cylinder wall;
[0033] Figure 5 This is a schematic diagram of the side structure of a multi-array embedded baffle buffer after the baffle has been bent and deformed.
[0034] The diagram shows:
[0035] Buffer 1
[0036] baffle 11
[0037] Gap 111
[0038] Buffer base plate 12
[0039] Connection structure 121
[0040] Limit Break 13
[0041] Launch tube 2
[0042] Cylinder wall groove 21 Detailed Implementation
[0043] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.
[0044] This invention provides a multi-array embedded baffle buffer, such as Figure 1 As shown, the system includes a buffer base plate 12 and multiple rows of baffles arranged at intervals along the length of the buffer base plate 12 on its inner side. Each row of baffles includes multiple baffles 11 arranged at intervals. A gap 111 is formed between two adjacent baffles 11 in each row of baffles. The baffles 11 are preferably arranged perpendicularly to the buffer base plate 12, and both the upper and lower surfaces of the baffles 11 are preferably planar. The multiple baffles 11 are preferably equidistant and parallel along the length of the buffer base plate 12. The baffles 11 have a fan-shaped annular structure when viewed from above. The cross-section of the buffer base plate 12 is arc-shaped, thus ensuring that the buffer base plate 12 and the multiple baffles 11 in each row of baffles have matching curvatures. Figure 3 As shown.
[0045] The inner wall of the launch tube 2 has multiple grooves 21 for matching the base plates 12 of the buffers. The multiple buffer base plates 12 are respectively fitted into the corresponding grooves 21, causing the baffles 11 to extend towards the center of the launch tube 2 and protrude into the inner side of the inner wall of the launch tube 2. Figure 4 As shown.
[0046] Furthermore, the number of grooves 21 in the cylinder wall is preferably at least two, and the multiple grooves 21 are preferably arranged in a centrally symmetrical manner, so that the buffers 1 arranged in the grooves 21 can apply force evenly to the movable base. The baffles 11 in the row of baffles array located at the mouth of the launch tube 2 and at the far end of the buffer base plate 12 are all limit baffles 13. Figure 2As shown, the thickness of the limit baffle 13 is greater than the thickness of the other baffles 11. The thickness of the limit baffle 13 is preferably 2 to 3 times the thickness of the other baffles 11. The cross-section of the buffer base plate 12 is an arc-shaped structure matching the groove 21 of the cylinder wall. When the movable base moves towards the outlet of the launch tube 2 at a certain speed, it can impact the baffle 11, causing the baffle 11 to undergo plastic deformation and absorb the kinetic energy of the movable base, thus achieving buffer braking. Figure 5 As shown.
[0047] It should be noted that the multi-stage baffles 11 of equal thickness in multiple arrays form the main buffer structure of the buffer 1. The multi-stage baffles 11 are cut into multiple arrays, with each arc-shaped baffle 11 approximating a planar baffle. Each stage of the baffle 11 requires less energy to bend and deform than a single array of baffles 11, making bending deformation easier. During ejection, the multi-stage baffles 11 undergo plastic deformation under the constraint of the sidewalls of the movable base, absorbing the kinetic energy of the base and achieving a buffering and braking effect. Because the multi-stage baffles 11 of the buffer have the same thickness and are in a small envelope angle multi-array form, they can achieve stable, low-impact, and efficient braking of the movable base. A schematic diagram of the buffer 1 after bending deformation is shown below. Figure 5 As shown, the thickness of the first-level limit baffle 13 at the top of the buffer 1 is set to 2 to 3 times the thickness of the buffer section baffle 11, so that the movable base can be retained in the tube by the limit baffle 13 even under extreme speed conditions, preventing the movable base from flying out of the launch tube 1. The gap 111 between each row of baffles allows the gas generated by the gas under the movable base to pass through, which is conducive to the rapid release of the gas pressure under the movable base, alleviates the residual pressure at the bottom of the base from further accelerating the base, and solves the problem of excessive impact force.
[0048] It should be noted that, for ease of assembly, the width of each row of baffle arrays is slightly smaller than the width of the buffer base plate 12. To increase the connection strength between the buffer base plate 12 and the baffle 11, the buffer base plate 12 and the baffle 11 are preferably manufactured in one piece.
[0049] like Figure 1As shown, both ends of the buffer base plate 12 have connecting structures 121. The buffer base plate 12 is fixed in the cylinder wall groove 21 by connecting parts configured through the connecting structures 121. The connecting structures 121 are preferably designed as through holes, and the connecting parts are preferably screws. By fixing the buffer base plate 12 with screws passing through the through holes, there is no need for support flanges, the structural size is small, and a lightweight design is achieved. In addition, the present invention designs the buffer 1 as a hidden structure embedded in the cylinder wall groove 21, which provides boundary constraints for the buffer 1. Only the parts of each level of baffles 11 extend into the launch tube 2, which greatly reduces the occupation of the radial clearance of the launch tube 2. The buffer 1 occupies a small radial clearance of the launch tube 2. Except for the limit baffle 13, the thickness of the baffles 11 is the same. The use of multiple levels of thinner baffles 11 to buffer and brake the movable base results in a basically constant bending resistance, achieving smooth and low-impact high-efficiency braking of the movable base. It has high design versatility and can be installed in various catapult-type storage and launch tubes 2, which greatly increases the versatility of the present invention.
[0050] In practical applications, depending on the application scenario, the present invention can match the braking of moving bases with different masses and speeds by adjusting the length of the buffer base plate 12, the number of arrays of baffles 11 on the buffer base plate 12, the width and thickness of the baffles 11, thus having good versatility.
[0051] The working principle of this invention is as follows:
[0052] like Figures 1-5 As shown, during use, two or more buffer plates 1 are installed in the groove 21 of the cylinder wall near the opening of the launch tube 2 through two sets of screw holes. The groove 21 of the cylinder wall contacts and engages with the buffer base plate 12, providing boundary constraints for the buffer 1. The multi-stage array of baffles 11 of equal thickness on the buffer 1 is the main buffering structure of the buffer 1. During ejection, the multi-stage baffles 11 undergo plastic deformation under the constraint of the side wall of the movable base to absorb the kinetic energy of the base and achieve a buffering braking effect. Since the multi-stage baffles 11 on the buffer 1 have the same thickness, they can achieve smooth, low-impact, and efficient braking of the movable base. A schematic diagram of the baffles 11 after bending deformation on the buffer 1 is shown below. Figure 5 As shown, the thickness of the first-level limit baffle 13 at the top of the buffer 1 is set to 2 to 3 times the thickness of the buffer section baffle 11, so as to force the movable base to remain in the launch tube 2 even at extreme speeds through the limit baffle 13, preventing the movable base from flying out of the launch tube 2.
[0053] The baffles 11 in the buffer 1 adopt a multi-array buffering form with each array having a small envelope angle. The arc baffles 11 are approximately flat, requiring less energy for bending deformation, which is key to achieving low-impact braking. Furthermore, the buffer 1 has multiple baffles 11 with a thin thickness. The use of small envelope angles, multiple arrays, and uniform thickness is one of the key factors enabling the buffer to brake smoothly and efficiently.
[0054] Furthermore, the buffer 1 adopts a multi-array buffer form, and the gap between each row of baffles 11 is conducive to the rapid release of gas pressure under the active base, which alleviates the problem of the residual pressure at the bottom of the base further accelerating the base and causing excessive impact force.
[0055] The buffer 1 is used in conjunction with the side wall of the movable base with large chamfers. The baffle 11 on the buffer 1 is plastically deformed upward by the constraint of the side wall of the movable base with large chamfers, which absorbs the impact energy of the base. The deformation resistance of the buffer 1 remains consistent and the impact force is small, which can minimize the impact of the base on the launch tube 2.
[0056] The buffer 1 in this invention is assembled in an embedded form, which greatly reduces the space occupied by the radial gap of the projectile. It is easy to assemble and disassemble, has a low cost, and can be applied to all sizes of catapult-type storage and launch tubes 2. Compared with shovel-type and coil-type buffers, it reduces the weight by more than 80% for launch tubes of similar size, has a simpler structure, and is easier to manufacture.
[0057] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0058] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.
Claims
1. A multi-array embedded baffle-type buffer, characterized in that, It includes a buffer base plate (12) and multiple rows of baffle arrays arranged on the inner side of the buffer base plate (12) and spaced apart along the length of the buffer base plate (12). Each row of the baffle array includes multiple baffles (11) arranged at intervals. A gap (111) is formed between two adjacent baffles (11) in each row of the baffle array. The inner wall of the launch tube (2) has multiple tube wall grooves (21) that match the buffer base plate (12). The multiple buffer base plates (12) are respectively matched and installed in the corresponding tube wall grooves (21) so that the baffles (11) extend toward the center of the launch tube (2) and protrude to the inner side of the inner wall of the launch tube (2). Among them, the baffles (11) in the row of baffles array located at the mouth of the launch tube (2) and at the end of the buffer base plate (12) are all limit baffles (13). The thickness of the limit baffles (13) is greater than the thickness of the other baffles (11). The cross section of the buffer base plate (12) is an arc-shaped structure that matches the tube wall grooves (21). When the movable base moves toward the outlet of the launch tube (2) at a certain speed, it can hit the baffle (11), thereby causing the baffle (11) to undergo plastic deformation to absorb the kinetic energy of the movable base and achieve buffer braking. The gap (111) allows the gas flow generated by the combustion gas under the movable base to pass through, thereby releasing the pressure under the movable base; The buffer base plate (12) and the baffle (11) are integrally formed.
2. The multi-array embedded baffle buffer according to claim 1, characterized in that, The thickness of the limit baffle (13) is 2 to 3 times the thickness of the other baffles (11).
3. The multi-array embedded baffle buffer according to claim 1, characterized in that, The baffle (11) is arranged perpendicularly to the bottom plate (12) of the buffer.
4. The multi-array embedded baffle buffer according to claim 1, characterized in that, The baffle (11) has two flat surfaces on its upper and lower sides.
5. The multi-array embedded baffle buffer according to claim 1, characterized in that, The baffle (11) has a fan-shaped ring structure when viewed from above.
6. The multi-array embedded baffle buffer according to claim 1, characterized in that, Both ends of the buffer base plate (12) have connecting structures (121), and the buffer base plate (12) is fixed in the groove (21) of the cylinder wall by connecting parts configured through the connecting structures (121).
7. The multi-array embedded baffle buffer according to claim 1, characterized in that, Multiple baffles (11) are arranged at equal intervals along the length of the buffer base plate (12).
8. The multi-array embedded baffle buffer according to claim 1, characterized in that, The baffles (11) except for the limit baffle (13) have the same thickness.
9. The multi-array embedded baffle buffer according to claim 1, characterized in that, The system can match the braking of moving bases with different masses and speeds by adjusting the length of the buffer base plate (12), the number of arrays of baffles (11) on the buffer base plate (12), the width and thickness of the baffles (11).