Movable base for elastic body ejection

Abstract

The application relates to a movable base for a missile body launcher in the field of missile launcher equipment, which comprises a base, a supporting seat and a brake profile; the base comprises a bottom plate and a side wall, the side wall surrounds the bottom plate to form a groove-shaped cylinder, the supporting seat comprises axial support and radial support, the axial support and the radial support are connected into an L-shaped structure, the radial support is arranged in close contact with the side wall, the axial support is arranged in close contact with the bottom plate, and multiple supporting seats are distributed at equal intervals along the inner periphery of the base; the brake profile is embedded on the side wall, multiple brake profiles are distributed at equal intervals along the circumference of the side wall, and the brake profile is used for constraining a coiled buffer connected to a launcher launching cylinder. Through integrated design, the base, the supporting seat and the brake profile are integrally formed in a machining mode, the compactness of the movable base structure is improved, the overall weight of the movable base is reduced, and lightweight design is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of missile launcher equipment, in particular, to a movable base for a missile launcher. BACKGROUND

[0002] When a missile is cold launched, a high-pressure gas generated by a gas generator acts on the bottom of a movable base of a launcher, the movable base supports the upward movement of the missile body, and the missile is pushed out of the launcher at a certain initial speed. A bumper installed at the mouth of the launcher prevents the movable base from exiting the launcher and injuring personnel or equipment by buffering and braking.

[0003] Due to the large weight of the missile and the high exit speed of the missile, the movable base needs to have sufficient strength and stiffness to withstand the weight overload of the missile body, the impact of high-pressure gas, and the impact load, and to prevent high-pressure gas leakage.

[0004] Currently, the movable base with a crimping bumper brake is only split type, which is formed by connecting a base plate and a support platform through screws. The base plate is mainly used to withstand the high-pressure gas at the bottom, the weight load of the missile body, the impact of the bumper at the mouth of the launcher to complete the braking, and the installation of the support platform. The support platform mainly provides axial support for the missile body, and the concave waist-shaped outer surface is used to assist in restraining the crimping of the bumper to achieve the buffering and braking of the movable base. The traditional movable base has some disadvantages and risks that are difficult to overcome in use.

[0005] 1. Large weight

[0006] The support platform of the split type movable base accounts for about 25% of the total weight of the movable base. The braking arc surface impacted by the bumper is transitioned from the side wall to the bottom plate through a circular arc, increasing the weight of the movable base. The functional modules and structural support modules of the split type movable base are separated, increasing the structural redundancy and greatly increasing the weight of the movable base.

[0007] 2. No radial support and sealing function

[0008] The split type movable base does not have a radial support function, and a set of rear adapters are needed to achieve radial support for the rear of the missile. Since the rear adapter is located near the engine exhaust port, there is a great risk of falling into the engine exhaust area and accelerating to hit the adjacent missile or equipment.

[0009] A hole needs to be left on the bottom plate of the base for use by the missile fixing mechanism. High-pressure gas can leak from the missile fixing hole during launching. The split type movable base does not have the function of sealing the gas, and gas leakage will reduce the internal pressure and may damage the launcher equipment.

[0010] 3. High processing cost

[0011] The inner cavity of the split type movable base chassis and the outer side of the support table need to be machined into braking camber surfaces, which are used to generate braking force by impacting with the barrel buffer, and complete the missile launching tail seat barrel.

[0012] In view of the fact that the traditional split type movable base cannot meet the use requirements, a new type of multifunctional integrated movable base is invented, which can solve the above problems. SUMMARY

[0013] In view of the defects in the prior art, the purpose of the present application is to provide a movable base for a missile launcher.

[0014] According to the present application, a movable base for a missile launcher is provided, which comprises a base, a support seat and a braking profile.

[0015] The base comprises a bottom plate and a side wall, the side wall surrounds the bottom plate to form a groove-shaped barrel, the support seat comprises an axial support and a radial support, the axial support and the radial support are connected in an L-shaped structure, the radial support is arranged in close contact with the side wall, the axial support is arranged in close contact with the bottom plate, and a plurality of support seats are distributed at equal intervals along the inner periphery of the base.

[0016] The braking profile is embedded on the side wall, a plurality of braking profiles are distributed at equal intervals along the circumference of the side wall, and the braking profile is used to constrain the coiled buffer connected to the launcher barrel.

[0017] In some embodiments, the side wall is a hollow cavity structure.

[0018] In some embodiments, the outer periphery of the side wall is provided with symmetrical sunken guide planes, which are used to match the anti-rotation planes on the inner periphery of the launcher barrel.

[0019] In some embodiments, a circular boss is formed in the middle of the bottom plate, a reinforcing rib is formed on the surface of the bottom plate, and the two ends of the reinforcing rib are connected with the side wall and the circular boss respectively.

[0020] In some embodiments, the surface of the axial support and / or the radial support is provided with a rubber pad.

[0021] In some embodiments, a guide belt is further included, the guide belt is an annular belt body, and the guide belt is embedded on the outer periphery of the side wall.

[0022] In some embodiments, a sealing ring is further included, and the sealing ring is embedded on the outer periphery of the side wall.

[0023] In some embodiments, the brake profile includes a first concave arc surface and a second concave arc surface, the first concave arc surface and the second concave arc surface are connected as a W-shaped structure, and the first concave arc surface and the second concave arc surface are respectively used to contact and apply pressure to the legs of the crimping buffer.

[0024] In some embodiments, the first concave arc surface and the second concave arc surface are both arc-shaped concave surfaces with variable curvature, and the first concave arc surface and the second concave arc surface with variable curvature are used to ensure that the legs of the crimping buffer are plastically crimped and deformed in an outward-inward manner.

[0025] In some embodiments, the base, the support seat and the brake profile are integrally formed.

[0026] Compared with the prior art, the present application has the following beneficial effects:

[0027] 1. The present application improves the compactness of the movable base structure, reduces the overall weight of the movable base, and realizes lightweight design by integrated design and machining of the base, the support seat and the brake profile.

[0028] 2. The present application improves the stiffness of the base by using a hollow structure for the side wall and embedding the brake profile of the buffer into the hollow side wall, and greatly reduces the complex curved surface and the processing difficulty and cost by changing the brake profile by only about 9% of the traditional brake profile.

[0029] 3. The present application solves the solid and elastic problem of the narrow space at the tail by efficient cooperation of the support, brake, sealing, anti-rotation, guiding and positioning function modules with the structure bearing module. BRIEF DESCRIPTION OF DRAWINGS

[0030] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, with reference to the accompanying drawings:

[0031] Figure 1 It is a top view of the overall structure of the movable base of the projectile launcher of the present application;

[0032] Figure 2 It is a cross-sectional structure schematic diagram of the movable base of the projectile launcher of the present application with a brake profile;

[0033] Figure 3 It is a cross-sectional structure schematic diagram of the movable base of the projectile launcher of the present application without a brake profile;

[0034] Figure 4 It is a structure schematic diagram of the support seat connection of the movable base of the projectile launcher of the present application;

[0035] Figure 5Assembling structure diagram of movable base brake profile for the elastic body ejector of the present application;

[0036] Figure 6 Assembling structure diagram of movable base and coiled buffer for the elastic body ejector of the present application. DETAILED DESCRIPTION

[0037] The present application will be described in detail below with specific examples. The following examples will help those skilled in the art to further understand the present application, but do not limit the present application in any form. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, a number of changes and improvements can be made. These all belong to the protection scope of the present application.

[0038] The present embodiment provides a movable base for an elastic body ejector, as shown in Figures 1-5 The base 1, the support 2 and the brake profile 3 are integrally formed by machining.

[0039] The base 1 comprises a bottom plate 11 and a side wall 12, the side wall 12 surrounds the bottom plate 11 to form a concave cylindrical structure. In some embodiments, a circular boss 111 is formed in the middle of the bottom plate 11, which is used for embedded contact with the profile of the missile body to be launched. In some embodiments, a reinforcing rib 112 is formed on the bottom plate 11, which is arranged along the radial direction of the bottom plate 11, one end of the reinforcing rib 112 is connected with the surface of the side wall 12, and the other end is connected with the boss 111. By forming the circular boss 111 and the reinforcing rib 112 on the bottom plate 11, the structural strength of the bottom plate 11 can be effectively improved, and the carrying capacity can be improved. In some embodiments, two symmetrical positioning grooves 113 are arranged at the lower end of the bottom plate 11, which are used for cooperation with the pins on the support ring on the launcher barrel, and can position and prevent the base 1 from rotating. In some embodiments, the side wall 12 is a hollow cavity structure formed by double-layer wall plates. The hollow cavity structure of the side wall 12 not only can reduce the overall weight of the movable base, but also can form a space for the brake profile 3, and improve the compactness of the overall structure of the movable base. In some embodiments, the outer circumferential surface of the side wall 12 is formed with symmetrical sunken guide planes 121. The sunken guide planes 121 are used for matching contact with the anti-rotation planes on the inner circumferential surface of the launcher barrel, so that the base 1 cannot rotate circumferentially relative to the barrel during the axial movement in the barrel. In some embodiments, a guide belt 4 is arranged around the outer circumferential surface of the side wall 12, and the guide belt 4 is connected in an embedded manner in the annular groove formed on the outer circumferential surface of the side wall 12. The guide belt 4 can make the base 1 move smoothly in the launcher barrel, ensure the stability of the posture of the base during movement, and prevent jamming and tilting. The number of guide belts 4 is preferably two, and the two guide belts 4 are arranged in an up-down interval along the axial direction of the side wall 12. In some embodiments, a sealing ring 5 is further arranged on the outer circumferential surface of the side wall 12, and the sealing ring 5 is embedded in the groove formed on the side wall 12. Preferably, when the two guide belts 4 are arranged in an up-down interval, the sealing ring 5 is located at the middle position between the two guide belts 4. The sealing ring 5 can seal the gas, avoid the gas from burning the missile by passing through the base, and improve the safety of launching.

[0040] The support base 2 comprises an axial support 21 and a radial support 22, and the axial support 21 and the radial support 22 are connected to form an L-shaped support base 2. The bottom surface of the horizontal structure of the axial support 21 is attached to the inner surface of the bottom plate 11, and the outer surface of the vertical structure of the radial support 22 is attached to the inner surface of the side wall 12. In some embodiments, a rubber pad is arranged on the surface of the axial support 21, and the rubber pad on the surface of the axial support 21 can provide soft support for the missile body. In some embodiments, a rubber pad is arranged on the surface of the radial support 22, and the rubber pad on the surface of the radial support 22 can provide soft support for the missile body.

[0041] The brake profile 3 is used to contact and constrain the deformation of the legs of the crimping bumper installed on the launcher barrel. The brake profile 3 is embedded in the sidewall 12. In some embodiments, the brake profile 3 is embedded in the sidewall 12 of the hollow cavity structure. The main part of the brake profile 3 embedded in the cavity of the sidewall 12 can prevent the side bending of the bumper and the like by the baffle arranged therein. The brake profile 3 is embedded in the sidewall 12, which can also enhance the overall structural strength of the base 1. In some embodiments, the overall structure of the brake profile 3 is W-shaped. The brake profile 3 includes a first concave arc surface 31 and a second concave arc surface 32, and the first concave arc surface 31 and the second concave arc surface 32 are connected to form a W-shaped brake profile 3. As shown in Figure 6 The crimping bumper installed on the launcher barrel has two crimpable leg structures, and the extension line of the middle connection between the first concave arc surface 31 and the second concave arc surface 32 is located between the two legs. When the brake profile 3 moves upward at a high speed for a predetermined distance, the top ends of the two legs of the crimping bumper enter the first concave arc surface 31 and the second concave arc surface 32, respectively, and continue to move upward, and the two legs are plastically deformed under the constraint of the arc surfaces of the first concave arc surface 31 and the second concave arc surface 32, respectively. In this embodiment, the stability of the plastic deformation of the legs is improved by optimizing the design of the brake profile that constrains the deformation of the legs of the crimping bumper, and the braking effect is ensured. In some embodiments, the first concave arc surface 31 and the second concave arc surface 32 are both variable-curvature concave surfaces. The curvature change of the first concave arc surface 31 and the second concave arc surface 32 is mainly to enable the legs of the crimping bumper to be plastically deformed in a stable outward-to-inward manner, and the curvature change is mainly that the curvature decreases from the entry point to the exit point of the legs of the crimping bumper, so as to ensure that the crimping of the legs of the crimping bumper is in the predetermined outward-to-inward manner.

[0042] The working principle of the movable base of the missile launcher provided in this embodiment is as follows: the base 1 is placed in the launcher barrel, the bottom of the missile to be launched is seated on the axial support 11, the middle part of the missile to be launched is in position cooperation with the circular boss 111, and the surface of the radial support 12 is in contact with the outer circumferential surface of the missile to be launched. When the missile is cold launched, the high-pressure gas generated by the gas generator acts on the bottom of the base 1, the base 1 supports the missile to move upward through the support seat 2, and the missile is pushed out of the barrel at a certain initial speed. The legs of the crimping bumper installed at the barrel mouth of the launcher barrel contact the brake profile 3 and plastically deform, and the movable base is retained in the barrel by the buffering and braking effect, which effectively prevents the base from injuring personnel or equipment when it is out of the barrel.

[0043] The application improves the compactness of the movable base structure, reduces the overall weight of the movable base, and realizes lightweight design by adopting machining to integrally form the base, the supporting seat and the brake profile. Meanwhile, the application inlines the brake profile in the hollow side wall by adopting the hollow structure of the side wall, which not only improves the base stiffness, but also greatly reduces the complex curved surface, the machining difficulty and the machining cost, with the change of the brake profile being only about 9% of the traditional one. In addition, the application solves the solid and elastic problem of the narrow space at the tail by efficiently matching the supporting, braking, sealing, anti-rotation, guiding and positioning function modules with the structure bearing module.

[0044] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0045] The specific embodiments of the application are described above. It should be understood that the application is not limited to the specific implementation described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essential content of the application. The embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other without conflict.

Claims

1. A movable base for a projectile ejector, characterized in that, It includes a base (1), a support (2), and a braking surface (3); The base (1) includes a base plate (11) and a side wall (12). The side wall (12) forms a groove-shaped cylinder around the base plate (11). The support seat (2) includes an axial support (21) and a radial support (22). The axial support (21) and the radial support (22) are connected to form an L-shaped structure. The radial support (22) is attached to the side wall (12). The axial support (21) is attached to the base plate (11). Multiple support seats (2) are evenly distributed along the inner circumference of the base (1). The braking surface (3) is embedded in the side wall (12), and multiple braking surfaces (3) are distributed at equal intervals along the circumference of the side wall (12). The braking surface (3) is used to constrain the coiled buffer connected to the catapult launch tube. The sidewall (12) is a hollow cavity structure; The base (1), the support (2), and the braking surface (3) are integrally formed.

2. The movable base for the projectile ejector according to claim 1, characterized in that, The outer circumferential surface of the sidewall (12) is provided with a symmetrical sinking guide plane (121), which is used to match the anti-spin plane on the inner circumferential surface of the catapult cylinder.

3. The movable base for a projectile ejector according to claim 1, characterized in that, A circular boss (111) is formed in the middle of the base plate (11), and a reinforcing rib (112) is formed on the surface of the base plate (11). The two ends of the reinforcing rib (112) are connected to the side wall (12) and the circular boss (111) respectively.

4. The movable base for a projectile ejector according to claim 1, characterized in that, The surfaces of the axial support (21) and / or the radial support (22) are provided with rubber pads.

5. The movable base for a projectile ejector according to claim 1, characterized in that, It also includes a guide belt (4), which is an annular belt body and is embedded in the outer peripheral surface of the side wall (12).

6. The movable base for a projectile ejector according to claim 1, characterized in that, It also includes a sealing ring (5), which is fitted onto the outer peripheral surface of the sidewall (12).

7. The movable base for a projectile ejector according to claim 1, characterized in that, The braking surface (3) includes a first concave arc surface (31) and a second concave arc surface (32). The first concave arc surface (31) and the second concave arc surface (32) are connected in a W-shaped structure. The first concave arc surface (31) and the second concave arc surface (32) are respectively used to contact the legs of the coiled buffer and apply pressure.

8. The movable base for a projectile ejector according to claim 7, characterized in that, Both the first concave arc surface (31) and the second concave arc surface (32) are arc-shaped concave surfaces with varying curvature. The first concave arc surface (31) and the second concave arc surface (32) with varying curvature are used to ensure that the legs of the coiled buffer are plastically coiled and deformed in an outward and inward manner.

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