CN111829391A

CN111829391A - Missile blocking and locking mechanism with controllable missile discharging speed

Info

Publication number: CN111829391A
Application number: CN202010667067.6A
Authority: CN
Inventors: 高恩武; 张伟方; 谢雪明; 王骏来; 石亦琨
Original assignee: Beijing Xingtu Exploration Technology Co ltd
Current assignee: Beijing Xingtu Exploration Technology Co ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2020-10-27

Abstract

A missile blocking and locking mechanism with controllable missile launching speed. The mechanism realizes the function of blocking and locking the missile of the launching canister by connecting the missile with the storage and transportation launching canister through two shearing pins, and controls the locking force of the launching canister and the speed of the missile discharging through the material of the shearing pins and the diameter of the weakening groove. The mechanism can ensure that the projectile body does not shake in the storage and transportation launching barrel in the transportation process; in the launching process, under the thrust of an engine, the locking mechanism is invalid, so that the acceleration of the missile body during takeoff is increased, the launching stroke is reduced, the size of the missile launching device is reduced, and the processing difficulty and the production cost are greatly reduced. The mechanism has wide application range and can be used for transporting and launching projectiles such as rocket projectiles, guided missiles, target projectiles and the like. The mechanism is simple in structure, and does not need special processing equipment and installation process requirements.

Description

Missile blocking and locking mechanism with controllable missile discharging speed

Technical Field

The invention provides a scheme of a missile blocking and locking mechanism in the process of missile transportation and launching, and belongs to the technical field of missile launching devices.

Background

Since world war II, countries in the world pay great attention to the development and launching of missile weapons, and not only are various types of missiles and missiles equipped, but also the missile weapons are widely applied to actual combat. In the weapon system of the missile, a launching device is an important component of the missile, and provides a shooting angle, a shooting direction and an initial speed for the missile launching. The storage, transportation and delivery module has the advantages of improving the loading speed of a missile launching system, shortening the launching preparation time, improving the emergency response capability of a missile weapon system and the like, and has important application prospects in the development of the missile weapon system in China.

In the traditional missile launching device, the missile blocking locking mechanism only limits the axial movement of a missile body in the transportation process, and the missile body needs to be unlocked before being launched, so that the structure is complex, the operation is complex, and the function is single; in order to meet the overall required projectile discharging speed, the projectile discharging speed is generally realized by increasing the launching stroke, so that the launching device is large in size, the manufacturing cost is increased, and meanwhile, inconvenience is brought to later-stage transportation, maintenance and the like. Therefore, the missile blocking locking mechanism with controllable missile outlet speed is necessary to design.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the missile blocking locking mechanism overcomes the defects in the prior art and is provided with a controllable missile discharging speed. The mechanism realizes the function of blocking and locking the missile of the launching canister by connecting the missile with the storage and transportation launching canister through two shearing pins, and controls the locking force of the launching canister and the speed of the missile discharging through the material of the shearing pins and the diameter of the weakening groove. The mechanism can ensure that the projectile body does not shake in the storage and transportation launching barrel in the transportation process; in the launching process, under the thrust of an engine, the locking mechanism is invalid, so that the acceleration of the missile body during takeoff is increased, the launching stroke is reduced, the size of the missile launching device is reduced, and the processing difficulty and the production cost are greatly reduced.

The technical solution of the invention is as follows: (in accordance with the claims)

Compared with the prior art, the invention has the beneficial effects that:

(1) the invention adopts the structural mode of the thread section, the weakening groove and the circular straight section, the bullet blocking locking mechanism does not need to be unlocked when the missile launches, the weakening groove is directly cut off under the thrust action of an engine, and the operation is convenient.

(2) The invention can select proper weakening groove diameter by calculation, thereby controlling the barrel discharging speed of the missile without longer launching stroke, greatly reducing the volume of the launching device and reducing the manufacturing cost.

(3) The invention has wide application range. The invention can be widely applied to the transportation and launching of projectiles such as rocket projectiles, guided missiles, target projectiles and the like.

(4) The invention has simple manufacturing process. The invention has simple structure and does not need special processing equipment and installation process requirements.

Drawings

Fig. 1 is a schematic structural view of a bullet-blocking locking mechanism in the present invention.

Fig. 2 is a schematic view of the installation of the latching catch mechanism of the present invention in a shipping module.

FIG. 3 is a graph of the weakened groove diameter of the locking catch mechanism versus the ejection speed of the present invention.

Fig. 4 is a graph of the weakened groove diameter of the blocking and ejecting mechanism of the present invention versus the axial overload of the projectile.

Detailed Description

A missile blocking and locking mechanism with controllable missile out-of-barrel speed is mainly characterized in that: the thread section, the weakening groove and the circular straight section are integrally formed through turning, and the structure is shown in figure 1.

Depending on the overall required ejection cartridge speed, the catch lock mechanism can be selected from suitable metal materials: red copper, brass, titanium alloy, aluminum alloy, and alloy steel. The properties of the materials are shown in Table 1

TABLE 1 metallic Material Properties of bullet-blocking latch mechanism

Serial number	Material	Density (kg/m)³)	Tensile Strength σ_b(Mpa)	Remarks for note
					1	Red copper	8960	195～295
2	Brass	850～8800	290～530
					3	Titanium alloy	4400～4890	880～925
4	Aluminium alloy	2650～2910	55～490
					5	Alloy steel	7200～7900	235～1470

The projectile body is fixed in the storage and delivery module by a projectile blocking locking mechanism, wherein a threaded section of the projectile blocking mechanism 1 is connected with the storage and delivery module 2, and a circular straight section of the projectile blocking mechanism is connected with the projectile body 3, as shown in fig. 2. Due to the fixing function of the bullet blocking and locking mechanism, the bullet body is ensured not to shake in the transportation process; under the action of certain thrust of an engine, the weakening groove is cut off, the bullet blocking mechanism fails, the bullet is started at a certain acceleration, and the speed of the bullet discharging from the barrel is ensured to meet the overall requirement.

The diameter of the weakening groove of the missile blocking locking mechanism is the key for controlling the missile discharging speed and resisting the transportation overload, and the optimal size calculation formula of the weakening groove is as follows:

wherein m is the mass (Kg) of the missile, v is the speed (m/s) of the missile body out of the barrel, L is the stroke (m) of the launcher, and sigma is_bIn order to weaken the tensile strength (MPa) of the material of the slot, a is the transport overload resistance (m/s) of the missile²)。

Fig. 3 is a graph of missile out-of-barrel speed curves corresponding to different weakening groove diameters when the bullet blocking mechanism is made of red copper, aluminum alloy (2a12), alloy steel (40Cr) and titanium alloy (TC4) under the conditions that the launching stroke is 2700mm and the mass of a missile body is 170 Kg.

Fig. 4 is a graph of missile overload resistance corresponding to different weakening groove diameters when the missile blocking mechanism is made of red copper, aluminum alloy (2a12), alloy steel (40Cr) and titanium alloy (TC4) under the condition that the mass of the missile body is 170 Kg.

The invention is not described in detail and is within the knowledge of a person skilled in the art.

Claims

1. A missile blocking locking mechanism with controllable missile discharging speed is designed in a structure mode of a threaded section, a weakening groove and a circular straight section, wherein the threaded section is connected with a storage and transportation launching barrel, the circular straight section is connected with a missile body, the missile discharging speed and the transportation overload resistance of the missile are controlled through the material and the diameter of the weakening groove, and the missile discharging speed in the launching process of the missile body is ensured to meet the overall index; the transportation overload can be resisted in the transportation process, and the device can not shake.

2. The missile blocking and locking mechanism with controllable missile launching barrel speed as claimed in claim 1, wherein the material is selected from the following materials: 3 types of metal materials (copper alloy, aluminum alloy, titanium alloy, alloy steel).

3. The projectile blocking latch mechanism of claim 1 wherein the weakened slot diameter is optimally sized. The optimal size calculation formula is as follows:

4. The missile blocking and locking mechanism with controllable missile launching speed as claimed in claim 1, which can be applied to the scenes of launching, transporting and the like of projectiles such as rocket projectiles and target projectiles in a storage and transportation barrel in an extensible range.