Composite material ejection device with stop system

Abstract

The utility model discloses a composite material ejection device with a stop system, which comprises a cylinder base and a composite material cylinder body, a bracket is arranged in the cylinder base, one end of the composite material cylinder body is fixedly arranged on the cylinder base, a through hole is arranged on the side wall of the other end of the composite material cylinder body, and the stop system is arranged in the through hole. And a stop system is detachably arranged in the through hole. The composite material ejection device with the stop system has the advantages of high rigidity, light weight, simplicity and convenience in installation, high safety, low cost, easiness in replacement of the stop system and the like, and is suitable for popularization and application in the field of ejection devices.

Description

Technical Field

[0001] This utility model belongs to the field of launching devices, and in particular relates to a catapult device. Background Technology

[0002] A catapult is a device that uses stored energy or external energy to propel an object a certain distance at a certain speed and direction. It is widely used in military, aerospace, and other fields, not only improving the range and accuracy of equipment but also increasing operational flexibility and effectiveness.

[0003] Most existing catapult systems are conventional metal launching devices, with numerous components, heavy weight, and fixed, non-replaceable stop mechanisms, resulting in high manufacturing and maintenance costs. Therefore, providing a lightweight catapult system with a replaceable stop mechanism and low cost is of great significance. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the deficiencies and defects mentioned in the background art above, and to provide a composite material ejection device with a stop system that meets the requirements of lightweight and rigidity, is low in cost, has a replaceable stop mechanism, and has a good stop effect. To solve the above technical problem, the technical solution proposed by this utility model is as follows:

[0005] A composite material ejection device with a stop system includes a cylindrical base, a support inside the cylindrical base, and a composite material cylindrical body. One end of the composite material cylindrical body is fixed to the cylindrical base, and a through hole is opened on the side wall of the other end of the composite material cylindrical body. A stop system is detachably installed in the through hole.

[0006] In the above-mentioned composite material ejection device, preferably, the stop system is a stop block mechanism. The stop block mechanism includes a stop block assembly and a first fixing member for fixing the stop block assembly at the through hole. The stop block assembly includes a fixing post and a stop block. The fixing post is fixedly connected to the stop block. The stop block is disposed on the inner wall of the cavity of the composite material cylinder. The fixing post passes through the through hole and is fixed by the first fixing member.

[0007] In the aforementioned composite material ejection device, preferably, the stop is a wedge-shaped structure with a variable cross-section. The wedge-shaped structure becomes thicker closer to the outlet end of the composite material cylinder. A rubber layer is adhered to the surface of the stop away from the fixed column, and the thickness of the rubber layer is uniform throughout. The stop can be made of steel. The wedge-shaped structure with a variable cross-section, and the maximum wedge angle within the spatial range, significantly improves the lateral load-bearing capacity of the stop. The rubber layer is cold-bonded to the surface of the stop, which greatly increases the lateral friction, preventing the support from flying out and increasing stability during launch.

[0008] In the aforementioned composite material ejection device, preferably, a first reinforcing ring is adhered to the outer wall of the outlet end of the composite material cylinder, and the through hole is opened at the first reinforcing ring. In this invention, the first reinforcing ring can be made of steel. The inner surface of the first reinforcing ring needs to be sandblasted to increase adhesion, while the end face and outer surface, if not sandblasted, need to be protected. An adhesive layer is applied to the surface of the first reinforcing ring (after bonding, it is smoothed out, and no excess adhesive is allowed), and it is installed at the outlet of the composite material cylinder. A reinforcing layer can also be added at the outlet of the composite material cylinder to reinforce it and prevent damage to the first reinforcing ring. After the first reinforcing ring is bonded, the reinforcing layer needs to be hand-laid for reinforcement.

[0009] In the aforementioned composite material ejection device, preferably, the first fixing member is a nut, a rubber washer is provided between the first fixing member and the first reinforcing ring, and a rubber sleeve is fitted onto the fixing post. Both the rubber washer and the rubber sleeve can be made of natural rubber, which has advantages such as increased sealing performance.

[0010] In the aforementioned composite material ejection device, preferably, the stopping system is a stop rod mechanism. The stop rod mechanism includes a stop rod and a second fixing member for fixing the stop rod to the through hole. One end of the stop rod is located on the inner wall of the composite material cylinder cavity, and the other end of the stop rod passes through the through hole and is fixed by the second fixing member. The stop rod can be made of steel, and its diameter can be 8mm.

[0011] In the aforementioned composite material ejection device, preferably, the other end of the stop bar is provided with a screw hole and is located in the through hole, and the second fixing member is a bolt, which cooperates with the screw hole to fix the stop bar.

[0012] In the aforementioned composite material ejection device, preferably, a second reinforcing ring is adhered to the outer wall of the outlet end of the composite material cylinder, and the through hole is opened at the second reinforcing ring. In this invention, the second reinforcing ring can be made of steel. The inner surface of the second reinforcing ring needs to be sandblasted to increase adhesion, while the end face and outer surface, if not sandblasted, need to be protected. An adhesive layer is applied to the surface of the second reinforcing ring (after bonding, it is smoothed, and no excess adhesive is allowed), and it is installed at the outlet of the composite material cylinder. A reinforcing layer can also be added at the outlet of the composite material cylinder for reinforcement, ensuring the second reinforcing ring is not damaged. After the reinforcing layer is bonded to the second reinforcing ring, it needs to be hand-laid for reinforcement.

[0013] The stop mechanism adopted in this utility model has the advantages of simple structure, small geometric size and maintenance-free operation. When the product is launched, the stop rod can directly stop the product, or the launch thrust can shear the stop rod to achieve the stopping effect.

[0014] In the aforementioned composite material catapult device, preferably, the outer wall of the composite material cylinder is provided with multiple fiber-reinforced composite material local reinforcement layers. The local reinforcement layers are fiber-reinforced composite materials, where the fibers are carbon fibers and the resin is epoxy resin; the local reinforcement layers are formed by 1-3mm (e.g., 2mm) winding layers, and the layup design uses circumferential winding. The local reinforcement layers are used to improve the strength and stiffness of the entire composite material cylinder, ensuring strength and stiffness while achieving weight reduction. Furthermore, the local reinforcement layers facilitate the fixing of the composite material catapult device to platforms such as vehicles and ships.

[0015] In the aforementioned composite material ejection device, preferably, the end of the composite material cylinder connected to the cylinder base is provided with an installation hole, and the cylinder base is provided with a corresponding installation hole. The composite material cylinder is glued to the cylinder base and then connected by fixing nails. After the composite material cylinder and the cylinder base are glued together, they are connected by the installation hole and fixing nails (such as rivets or screws), which has the characteristics of convenient and quick installation.

[0016] In the aforementioned composite material ejection device, preferably, the composite material of the composite material cylinder is a fiber-reinforced composite material, wherein the fiber is carbon fiber and the resin is epoxy resin; the composite material cylinder is obtained by a 2-7mm (e.g., 3mm) winding layer, and the layup design adopts circumferential winding plus spiral winding.

[0017] This invention enables the integral molding of a composite material projectile launcher cylinder using a winding process, achieving weight reduction while maintaining the device's strength and rigidity. Specifically, the composite material cylinder employs a 3mm CFRP winding layer, with localized 2mm CFRP winding reinforcing the composite material structure. By optimizing the circumferential and helical winding of the composite material cylinder, and using circumferential winding for localized reinforcing layers, the overall composite material cylinder achieves the design requirements for rigidity while also achieving better weight reduction.

[0018] In the aforementioned composite material ejection device, preferably, the cylinder base can be made of 7075 aluminum alloy.

[0019] Due to the limited space at the opening of the composite material cylinder and the fixed position of the projectile, optimizing the stop system is necessary to achieve interference-free launch and interception of the support within a confined space. This invention addresses this issue by incorporating a stop system at the outlet of the composite material cylinder. During the launch of the projectile, the stop system prevents impact, allowing for uninterrupted exit. When the support moves to the opening at the front of the cylinder, it is blocked by the stop system, remaining inside the cylinder and not affecting the projectile's flight. This provides excellent concealment during launch and facilitates repeated use.

[0020] In the stop mechanism of this utility model, the composite material cylinder and the stop assembly can be bolted together, and the composite material cylinder and the reinforcing ring are fully bonded together, which can significantly improve the stability of installation. A rubber layer is provided on the surface of the stop assembly to increase the frictional resistance generated by the stop assembly. The cross-section of the stop is a variable cross-section wedge structure, and the wedge angle is maximized within the spatial range to greatly improve the lateral load-bearing capacity of the stop. The rubber layer vulcanized on the surface of the stop significantly increases the lateral frictional resistance, and the rigid stop's limiting effect ensures that the rubber contacts the rigid stop during large deformations, at which point the axial stiffness increases significantly, which also helps the stop to improve its stopping effect when subjected to large loads.

[0021] In the stop mechanism of this utility model, the composite material cylinder and the stop rod are connected by bolts, and the composite material cylinder and the reinforcing ring are bonded together with adhesive (full bonding) to improve stability; the stop mechanism can be set with two rows and four columns of eight stop rod structures. When the catapult product is launched, the launch thrust can shear the stop rod to achieve a better stopping effect. The stop mechanism has the advantages of simple structure, small geometric size and maintenance-free operation.

[0022] This invention features a removable stop system installed through a through-hole in the composite material cylinder. This stop system is reusable and easy to disassemble and install for replacement or maintenance. It allows the support to be repeatedly held inside the cylinder, ensuring the projectile can exit smoothly and safely, thus achieving a safe launch.

[0023] Compared with the prior art, the advantages of this utility model are:

[0024] 1. This utility model's composite material catapult device with a stop system significantly reduces the overall weight and installation cost of the device under the same strength and stiffness design requirements. Only the stop system needs to be installed to connect it to the power unit. Compared to traditional metal catapult devices, the weight is reduced by approximately 39%, achieving a significant weight reduction effect. This greatly reduces the number of components, making installation more convenient, subsequent maintenance easier, and maintenance costs lower. It also improves the stability and portability of the device.

[0025] 2. The composite material ejection device with a stop system of this utility model has a stop system that can be detached and installed through a through hole, making maintenance and replacement convenient. During the process of launching the composite material cylinder, the stop system can avoid impact and contact with the product, allowing the product to exit the cylinder without interference. When the support moves to the front opening of the composite material cylinder, it is blocked by the stop system and remains inside the cylinder, which will not affect the flight of the product. This gives the ejection process a better concealment effect and greatly improves safety.

[0026] Overall, the composite material ejection device with a stop system of this utility model has the advantages of high rigidity, light weight, simple installation, high safety, low cost, and easy replacement of the stop system, and is suitable for promotion and application in the field of ejection devices. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the composite material ejection device with a stop system in Example 1.

[0029] Figure 2 for Figure 1 Enlarged view of section I in the middle.

[0030] Figure 3 This is a schematic diagram of the structure of the first reinforcing ring in Example 1.

[0031] Figure 4 This is a schematic diagram of the block assembly in Example 1.

[0032] Figure 5 for Figure 4 Side view.

[0033] Figure 6 This is a schematic diagram of the composite material ejection device with a stop system in Example 2.

[0034] Figure 7 for Figure 6 Enlarged view of section II.

[0035] Figure 8 This is a schematic diagram of the structure of the second reinforcing ring in Example 2.

[0036] Figure 9 This is a schematic diagram of the stop bar in Example 2.

[0037] Legend:

[0038] 1. Cylinder base; 2. Composite material cylinder; 3. First fixing component; 4. Fixing column; 5. Stop block; 6. Rubber layer; 7. First reinforcing ring; 8. Rubber washer; 9. Rubber sleeve; 10. Stop bar; 11. Second fixing component; 12. Screw hole; 13. Second reinforcing ring; 14. Fiber-reinforced composite material local reinforcing layer; 15. Fixing nail. Detailed Implementation

[0039] To facilitate understanding of this utility model, it will be described more comprehensively and in detail below with reference to the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0040] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of protection of this invention.

[0041] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0042] Example 1:

[0043] like Figure 1 As shown, the composite material ejection device with a stop system in this embodiment includes a cylindrical base 1, a support is provided inside the cylindrical base 1, and a composite material cylinder 2 is also included. One end of the composite material cylinder 2 is fixed on the cylindrical base 1, and a through hole is opened on the side wall of the other end of the composite material cylinder 2. A stop system is detachably provided in the through hole.

[0044] like Figure 2 As shown, in this embodiment, the stop system is a stop block mechanism. The stop block mechanism includes a stop block assembly and a first fixing member 3 for fixing the stop block assembly at the through hole. The stop block assembly includes a fixing post 4 and a stop block 5. The fixing post 4 is fixedly connected to the stop block 5. The stop block 5 is located on the inner wall of the cavity of the composite material cylinder 2. The fixing post 4 passes through the through hole and is fixed by the first fixing member 3.

[0045] like Figure 4 , Figure 5 As shown, in this embodiment, the stop block 5 is a wedge-shaped structure with a variable cross section. The wedge-shaped structure is thicker closer to the outlet end of the composite material cylinder 2. A rubber layer 6 is adhered to the side surface of the stop block 5 away from the fixed column 4. The thickness of the rubber layer 6 is the same everywhere.

[0046] like Figure 3 As shown, in this embodiment, a first reinforcing ring 7 is attached to the outer wall of the outlet end of the composite material cylinder 2, and a through hole is opened at the first reinforcing ring 7.

[0047] In this embodiment, the first fixing member 3 is a nut, a rubber washer 8 is provided between the first fixing member 3 and the first reinforcing ring 7, and a rubber sleeve 9 is fitted on the fixing post 4.

[0048] In this embodiment, the outer wall of the composite material cylinder 2 is provided with multiple fiber-reinforced composite material local reinforcing layers 14. The local reinforcing layers are fiber-reinforced composite materials, with carbon fiber as the fiber and epoxy resin as the resin; the local reinforcing layers are obtained by a 2mm winding layer, and the layup design adopts circumferential winding.

[0049] In this embodiment, the end of the composite material cylinder 2 connected to the cylinder base 1 is provided with an installation hole, and the cylinder base 1 is provided with a corresponding installation hole. The composite material cylinder 2 is glued to the cylinder base 1 and then connected by fixing nails 15.

[0050] In this embodiment, the composite material of the composite cylinder 2 is a fiber-reinforced composite material, the fiber is carbon fiber, and the resin is epoxy resin; the composite material cylinder is obtained by a 3mm winding layer, and the layup design adopts circumferential winding plus spiral winding.

[0051] Example 2:

[0052] The main difference between the composite material ejection device with a stop system in this embodiment and Embodiment 1 is the different stop system.

[0053] Specifically, such as Figure 6 , Figure 7 As shown, in this embodiment, the stop system is a stop rod stop mechanism. The stop rod stop mechanism includes a stop rod 10 and a second fixing member 11 for fixing the stop rod 10 at the through hole. One end of the stop rod 10 is located on the inner wall of the inner cavity of the composite material cylinder 2, and the other end of the stop rod 10 passes through the through hole and is fixed by the second fixing member 11.

[0054] like Figure 9 As shown, in this embodiment, the other end of the stop bar 10 is provided with a screw hole 12 and is located in the through hole. The second fixing member 11 is a bolt, which cooperates with the screw hole 12 to fix the stop bar 10.

[0055] like Figure 8 As shown, in this embodiment, a second reinforcing ring 13 is attached to the outer wall of the outlet end of the composite material cylinder 2, and a through hole is opened at the second reinforcing ring 13.

[0056] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A composite material catapult with stop system comprising a cartridge base (1) inside which a seat is provided, characterised in that, Also include a composite barrel (2), one end of the barrel seat (1) is fixedly provided on the composite barrel (2), the other end of the composite barrel (2) is provided with a through hole on the side wall, and the through hole is detachably provided with a stop system.

2. The composite catapult of claim 1, wherein, The stop system is a stop block stop mechanism, the stop block stop mechanism includes a stop block assembly and a first fixing member (3) for fixing the stop block assembly at the through hole, the stop block assembly includes a fixed column (4) and a stop block (5), the fixed column (4) is fixedly connected with the stop block (5), the stop block (5) is arranged on the inner wall of the inner cavity of the composite barrel (2), the fixed column (4) passes through the through hole and is fixed by the first fixing member (3).

3. The composite catapult of claim 2, wherein, The stop block (5) is a wedge-shaped structure with variable cross-section, the wedge-shaped structure is thicker closer to the outlet end of the composite barrel (2), and a rubber layer (6) is attached to the surface of the side of the stop block (5) away from the fixed column (4), the thickness of the rubber layer (6) is the same at different positions.

4. The composite catapult of claim 2, wherein, A first reinforcing ring (7) is attached to the outer wall of the outlet end of the composite barrel (2), and the through hole is arranged at the first reinforcing ring (7).

5. The composite catapult of claim 4, wherein, The first fixing member (3) is a nut, a rubber gasket (8) is arranged between the first fixing member (3) and the first reinforcing ring (7), and a rubber sleeve (9) is arranged on the fixed column (4).

6. The composite catapult of claim 1, wherein, The stop system is a stop rod stop mechanism, the stop rod stop mechanism includes a stop rod (10) and a second fixing member (11) for fixing the stop rod (10) at the through hole, one end of the stop rod (10) is located on the inner wall of the inner cavity of the composite barrel (2), the other end of the stop rod (10) passes through the through hole and is fixed by the second fixing member (11).

7. The composite catapult of claim 6, wherein, The other end of the stop rod (10) is provided with a threaded hole (12) and is located in the through hole, and the second fixing member (11) is a bolt, the bolt and the threaded hole (12) cooperate to fix the stop rod (10).

8. The composite catapult of claim 6, wherein, A second reinforcing ring (13) is attached to the outer wall of the outlet end of the composite barrel (2), and the through hole is arranged at the second reinforcing ring (13).

9. The composite catapult of any of claims 1-8, wherein, The outer wall of the composite barrel (2) is provided with a plurality of fiber reinforced composite local reinforcing layers (14).

10. The composite catapult of any one of claims 1-8, wherein, One end of the composite barrel (2) connected with the barrel seat (1) is provided with a mounting hole, the barrel seat (1) is correspondingly provided with a mounting hole, and the composite barrel (2) is arranged on the barrel seat (1) by adhesion and then connected by a fixing nail (15).

Images