A supercharging device for improving the utilization rate of launch gas in a 40mm rocket launcher

Abstract

The present invention discloses a supercharging device for improving the utilization rate of launch gas of a 40mm rocket launcher, which comprises a locking mechanism and a supercharging mechanism; one end of the supercharging mechanism is attached to the rear end face of the rocket launcher nozzle and is tightly connected through the locking mechanism. The supercharging mechanism collects the launch gas ejected from the rocket launcher nozzle to push the rocket projectile; the present invention can improve the launch energy of the rocket projectile and enhance the range and action efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of 40mm rocket launcher technology, and particularly relates to a supercharging device for improving the utilization rate of launch gas for a 40mm rocket launcher. Background Art

[0002] The individual 40mm rocket launcher is an infantry anti-tank assault weapon system. It is simple to operate, light in weight, and powerful, and is still widely equipped in grass-roots infantry units. It is a powerful weapon for infantry in short-range combat and armor penetration. However, due to its recoilless gun launch method, the rear of the rocket launcher is open. When the rocket is launched, nearly half of the gunpowder launch energy of the engine is discharged from the rear opening of the rocket launcher. This part of the lost energy results in a relatively low initial velocity of the rocket and limited range. Since the usage of this launch system is large and its performance is good, it is impossible to replace all of them in a relatively long period of time. Therefore, technical and structural improvements should be considered on this launch system to improve the launch energy of the rocket, range, and effectiveness. Summary of the Invention

[0003] In view of this, the present invention provides a supercharging device for improving the utilization rate of launch gas for a 40mm rocket launcher, which can improve the launch energy of the rocket, range, and effectiveness.

[0004] The technical solution of the present invention is realized as follows:

[0005] A supercharging device for improving the utilization rate of launch gas for a 40mm rocket launcher includes a locking mechanism and a supercharging mechanism;

[0006] One end of the supercharging mechanism is attached to the rear end face of the rocket launcher nozzle and is fixedly connected through the locking mechanism. The supercharging mechanism collects the launch gas ejected from the rocket launcher nozzle and pushes the rocket.

[0007] Furthermore, the supercharging device further includes a bracket; the bracket is fixedly installed at the narrow part of the rocket launcher nozzle to stably support the supercharging device.

[0008] Furthermore, the locking mechanism includes a locking hook, a connecting screw, a positioning pin, a compression spring, a pressure screw, and a rotating block; a positioning pin mounting hole is machined on the rotating block, the positioning pin is installed in its mounting hole, one end of the positioning pin is sleeved with the compression spring, the pressure screw presses the compression spring and is fixedly connected to the rotating block, and the rotating block is connected to the locking hook through the connecting screw. The rotating block can rotate relative to the locking hook with the connecting screw as the rotation axis.

[0009] Further, the pressurizing mechanism includes a hanger shell, fixing screws, an outer shell, a sealing ring, a tension spring, a piston cylinder, a positioning cylinder, a connecting spring flange, and a fixing compression screw; a sealing ring is sleeved on the outer cylindrical surface at the upper end of the piston cylinder, the upper half of the piston cylinder is sleeved in the outer shell, and the lower half is fixedly connected to the positioning cylinder, the connecting spring flange, and the fixing compression screw in sequence. The positioning cylinder is threadedly connected to the outside of the piston cylinder, the positioning cylinder is in contact with the connecting spring flange, and the fixing compression screw is threadedly connected to the piston cylinder to press the connecting spring flange tightly; both ends of the tension spring are respectively hung in the corresponding connecting holes of the flange on the outer shell and the connecting spring flange, and 4 tension springs are circumferentially and evenly distributed between the outer shell flange and the connecting spring flange. The hanger shell is hung on the convex platform at the upper end of the outer shell and fixedly connected through fixing screws.

[0010] Further, an oblong pressure relief hole is machined on the piston cylinder.

[0011] Beneficial effects:

[0012] The pressurizing device of the present invention improves the utilization rate of the launching gas, increases the launching initial velocity and range of the same kind of rocket projectile, is easy to install and disassemble, has a limited increase in weight, and meets the requirements of individual soldiers. Description of the drawings

[0013] Figure 1 It is the overall view and sectional view of the launch tube with a pressurizing device; (a) is the overall view, and (b) is the sectional view.

[0014] Figure 2 It is the structural exploded view of the pressurizing mechanism.

[0015] Figure 3 It is the half-sectional structure view and isometric view of the pressurizing mechanism; (a) is the half-sectional structure view, and (b) is the isometric view.

[0016] Figure 4 It is the half-sectional structure view and isometric view of the pressurizing mechanism when it is sprung open; (a) is the half-sectional structure view, and (b) is the isometric view.

[0017] Figure 5 It is the sectional view and isometric view of the locking mechanism; (a) is the sectional view, and (b) is the isometric view.

[0018] Among them, 1 - launch tube, 2 - bracket, 3 - locking mechanism, 4 - pressurizing mechanism;

[0019] 3 - 1 locking hook, 3 - 2 connecting screw, 3 - 3 positioning pin, 3 - 4 compression spring, 3 - 5 compression screw, 3 - 6 rotating block;

[0020] 4 - 1 hanger shell, 4 - 2 fixing screw, 4 - 3 outer shell, 4 - 4 sealing ring, 4 - 5 tension spring, 4 - 6 piston cylinder, 4 - 7 positioning cylinder, 4 - 8 connecting spring flange, 4 - 9 fixing compression screw. Specific implementation manner

[0021] The present invention will be described in detail below with reference to the accompanying drawings and by way of examples.

[0022] The present invention provides a pressure boosting device for improving the utilization rate of launch gas for a 40mm rocket launcher. As shown in Figure 1 (a) and (b), the device is composed of a bracket, a locking mechanism, and a pressure boosting mechanism. After this device is added to the rocket launcher, when the rocket projectile leaves the launcher, the gunpowder gas generated by the rocket projectile engine enters the pressure boosting mechanism. The pressure boosting mechanism collects the gas and re-uses it to push the rocket projectile, thereby increasing the launch initial velocity and range.

[0023] (1) Bracket: It has the same structure as the original rocket launcher bracket and is installed at the narrow mouth part of the rear nozzle of the rocket launcher to form front and rear supports, so as to ensure the balance of the entire system during the launch of the rocket launcher after the pressure boosting device is added.

[0024] (2) The locking mechanism consists of a locking hook, a connecting screw, a positioning pin, a compression spring, a pressure screw, and a rotating block. Its function is to ensure reliable connection between the pressure boosting mechanism and the rocket launcher after the pressure boosting mechanism is hung on the rear end of the rocket launcher nozzle by installing the locking mechanism at the lower end of the assembly.

[0025] (3) As shown in Figure 2 , the pressure boosting mechanism is composed of a hanging frame shell, a fixing screw, an outer shell, a sealing ring, a pulling spring, a piston cylinder body, a positioning cylinder, a connecting spring flange, and a fixing pressure screw. When the rocket projectile is launched, the pressure boosting mechanism expands and takes a certain shape at a certain volume to form a certain pressure space. At the same time, a pressure relief groove hole is added to the part of the piston cylinder body that moves out of the outer shell to adjust the pressure in the pressure chamber and quickly relieve the pressure after the rocket projectile leaves the launcher, ensuring the quick loading of the next rocket projectile.

[0026] The assembly steps of the device are as follows:

[0027] (1) Make the upper end face of the outer shell of the pressure boosting mechanism fit with the rear end face of the rocket launcher nozzle, and then insert the groove of the hanging frame shell of the pressure boosting mechanism from the upper end of the rear extension of the rocket launcher nozzle downwards until the inner circular surface of the hanging frame shell fits with the outer circular surface of the rocket launcher nozzle;

[0028] (2) Insert the locking hook groove of the locking mechanism into the extension that turns forward from the rear end of the rocket launcher nozzle, then install the rotating block and turn it 180° from bottom to top, so that the inner surface of the rotating block fits with the inner surface of the protruding platform at the upper end of the outer shell of the pressure boosting mechanism. Finally, insert the retractable positioning pin into the hole that is pressed against the lower end of the protruding platform at the upper end of the outer shell of the pressure boosting mechanism.

[0029] (3) Install the bracket at the small circle of the rocket launcher nozzle. The bracket can be folded and attached to the lower part of the rocket launcher. Thus, the installation of the pressure boosting device is completed.

[0030] The specific working principle of the device:

[0031] As shown inFigure 4 As shown in (a) and (b), when the rocket is launched, the gunpowder gas enters the pressurizing mechanism through the nozzle. The pressurizing mechanism is compressed and expands. When the piston cylinder of the pressurizing mechanism is compressed and moves into place, the volume of the pressurizing mechanism is fixed. The gunpowder gas is collected in the cavity of the pressurizing mechanism. The rocket is pushed out of the rocket launcher under this pressure. This pressure is greater than that without the pressurizing mechanism. Therefore, the initial velocity of the rocket increases and the range also improves.

[0032] As Figure 3 As shown in (a) and (b), the assembly process of the pressurizing mechanism 4: Install the sealing ring 4-4 in the outer cylindrical groove at the upper end of the piston cylinder 4-6. Then, insert the lower end of the assembled piston cylinder 4-6 into the upper port of the outer shell 4-3 until the end face is positioned. Then, screw the lower end of the piston cylinder 4-6 into the positioning cylinder 4-7 until it is in place. Then, install the connecting spring flange 4-8, whose upper end face fits with the lower end face of the positioning cylinder 4-7. Then, screw in the fixing pressure screw 4-9 until the connecting spring flange 4-8 is tightened. Hang the two ends of the tension spring 4-5 in the two connecting holes on the flange of the outer shell 4-3 and the connecting spring flange 4-8. A total of 4 tension springs 4-5 are installed circumferentially and evenly. Finally, fit the inner surface of the short side of the hanging frame shell 4-1 with the lower end face of the upper boss of the outer shell 4-3, align the connecting holes, and screw in the fixing screw 4-2. The hanging frame shell 4-1 is fixedly connected to the outer shell 4-3, and the assembly of the pressurizing mechanism 4 is completed.

[0033] As Figure 5 As shown in (a) and (b), the assembly process of the locking mechanism 3: Install the positioning pin 3-3 into the upper hole of the rotating block 3-6. Then, install the compression spring 3-4 at its rear end, and then install the pressure screw 3-5. Align the connecting hole of the assembled rotating block 3-6 component with the connecting hole of the locking hook 3-1, and screw in the connecting screw 3-2. The implementation of the locking mechanism 3 is completed. After completion, it should be ensured that the rotating block 3-6 component can rotate freely through the connecting screw 3-2.

[0034] The pressurizing mechanism 4 is hung from top to bottom through the hanging frame shell 4-1 on the outer extension of the nozzle port of the rocket launcher 1. The end face of the outer shell 4-3 of the pressurizing mechanism 4 fits with the end face of the nozzle of the rocket launcher 1. Then, insert the locking hook 3-1 of the locking mechanism 3 into the body wall that turns forward at the nozzle port of the rocket launcher 1 at the lower end of the connected position of the rocket launcher 1 and the pressurizing mechanism 4. Then, rotate the rotating block 3-6 of the locking mechanism 3 from bottom to top so that the inner surface of the rotating block 3-6 fits with the inner surface of the upper boss of the outer shell 4-3 of the pressurizing mechanism 4, that is, the rocket launcher 1 and the pressurizing mechanism 4 are connected and fixed through the locking mechanism 3.

[0035] Finally, connect the bracket 2 to the small-diameter part of the rear nozzle of the rocket launcher 1. Thus, a 40mm rocket launcher with a pressurizing device is formed.

[0036] In summary, the above are only the preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A supercharging device for improving the utilization rate of launch gas in a 40mm rocket launcher, characterized in that, It includes a locking mechanism and a boosting mechanism; One end of the boosting mechanism is in contact with the rear end face of the rocket launcher nozzle and is fixedly connected through the locking mechanism. The boosting mechanism collects the launching gas ejected from the rocket launcher nozzle to push the rocket; The boosting mechanism includes a hanger shell, fixing screws, an outer shell, a sealing ring, a tension spring, a piston cylinder body, a positioning cylinder, a connecting spring flange and a fixing compression screw; the outer cylindrical surface at the upper end of the piston cylinder body is sleeved with a sealing ring, the upper half of the piston cylinder body is sleeved in the outer shell, and the lower half is fixedly connected to the positioning cylinder, the connecting spring flange and the fixing compression screw in sequence. The positioning cylinder is threadedly connected to the outside of the piston cylinder body, the positioning cylinder is in contact with the connecting spring flange, the fixing compression screw is threadedly connected to the piston cylinder body to press the connecting spring flange tightly; both ends of the tension spring are respectively hung in the corresponding connection holes of the flange on the outer shell and the connecting spring flange. There are 4 tension springs evenly distributed circumferentially between the outer shell flange and the connecting spring flange. The hanger shell is hung on the upper convex platform of the outer shell and is fixedly connected through fixing screws.

2. The supercharging device for improving the utilization rate of the launching gas of a 40mm rocket launcher according to claim 1, characterized in that, The boosting device further includes a bracket; the bracket is fixedly installed at the narrow mouth part of the rocket launcher nozzle to achieve stable support for the boosting device.

3. The supercharging device for improving the utilization rate of the launch gas of a 40mm rocket launcher according to claim 1, characterized in that, The locking mechanism includes a locking hook, a connecting screw, a positioning pin, a compression spring, a compression screw and a rotating stopper; a positioning pin mounting hole is machined on the rotating stopper, the positioning pin is installed in its mounting hole, one end of the positioning pin is sleeved with a compression spring, and the compression screw presses the compression spring tightly and then is fixedly connected to the rotating stopper. The rotating stopper is connected to the locking hook through a connecting screw, and the rotating stopper can rotate relative to the locking hook with the connecting screw as the rotation axis.

4. A supercharging device for improving the utilization rate of launch gas of a 40mm rocket launcher according to claim 1, characterized in that, An oblong pressure relief hole is machined on the piston cylinder body.

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