CN204694158U - Mortar emitter - Google Patents

Abstract

The utility model discloses a mortar launching device, which comprises a breech, an elastic part, a blocking part and a cylindrical barrel with a breech, the breech is installed at one end of the barrel, and the breech is provided with The firing pin located in the gun bore, the blocking member includes a bushing and a shoulder arranged outside the bushing, the bushing is set outside the firing pin, and the first end of the elastic member abuts against the blocking member , the second end abuts on the gun breech, the breech is provided with at least one first exhaust hole, when the elastic member is in the original state, the first exhaust hole communicates with the gun bore; when the elastic member When compressed, the shoulder blocks the first vent hole. Under the premise of ensuring the mortar shells slide down reliably and the air is discharged from the first exhaust hole in the gun tail, the mortar launching device can adopt a smaller gap in the inner diameter of the barrel, thereby increasing the initial velocity of the shells and increasing the shooting range , while effectively improving shooting accuracy.

Description

mortar launcher

technical field

The utility model relates to the technical field of design and manufacture of muzzle loading mortars, in particular to a mortar launching device.

Background technique

As shown in Figure 1, in a traditional mortar, the shell is loaded from the muzzle, and then the shell slides down the barrel by its own gravity and hits the firing pin at the bottom to fire, and the gas generated by the shell is discharged from the muzzle. In order to allow the compressed gas in the barrel to flow out smoothly when the shell slides down without affecting the downward speed of the shell, there must be a gap between the shell and the wall of the bore, that is to say, the diameter of the shell is smaller than the inner diameter of the barrel, which is the purpose of muzzle loading. A necessary condition for shells.

The air under the shell needs to be discharged upwards from the gap between the shell and the bore wall, so it takes a certain amount of time for the mortar shell loaded in the muzzle to slide down to firing at the tail of the gun, which reduces the rate of fire of the mortar. Proportional to the size of the gap between the shell and the bore wall.

Due to the existence of the gap, the gunpowder gas will also leak in a large amount when the shell is launched, and its leakage amount can reach 10-15% of the total amount of the gunpowder gas. As a result, the chamber pressure is reduced, causing the muzzle velocity of the shell to decrease. The larger the gap, the larger the amount of propellant gas leakage, and the lower the energy utilization rate of propellant powder.

The existence of the gap also affects the centering of the shell in the chamber, causing the fired shell to swing when it moves along the barrel, and the amount of gunpowder gas leakage of each shell is inconsistent, resulting in the dispersion of the muzzle velocity, which reduces the shooting accuracy of the shell. .

To sum up, if the gap between the shell and the bore wall is large, the rate of fire of the shell increases, but the initial velocity of the shell decreases and the shooting accuracy decreases; the gap between the shell and the bore wall is small, the initial velocity of the shell increases, and the shooting accuracy improves, but The rate of fire of the mortar is reduced, and it may even cause blind fire due to insufficient firing energy of the shell due to insufficient sliding speed.

Utility model content

Based on this, the utility model is to overcome the defects of the prior art and provide a mortar launching device, which can improve the initial velocity, firing rate and shooting accuracy of mortar shells.

Its technical scheme is as follows:

A mortar launching device, comprising a gun breech, an elastic member, a blocking member and a cylindrical barrel with a gun bore, the gun breech is installed at one end of the barrel, and the gun breech is provided with a shotgun located in the gun bore. The blocking member includes a bushing and a shoulder arranged outside the bushing, the bushing is set outside the firing pin, the first end of the elastic member abuts against the blocking member, and the second end abuts against the firing pin. Connected to the breech, the breech is provided with at least one first exhaust hole, when the elastic member is in the original state, the first exhaust hole communicates with the gun bore; when the elastic member is compressed, the The shoulder blocks the first vent hole.

In one of the embodiments, an installation cavity is provided in the breech, and the sleeve is installed in the installation cavity, the first end of the elastic member abuts on the sleeve, and the second end abuts on the installation cavity. on the bottom wall of the chamber.

In one of the embodiments, the bottom of the sleeve is provided with a positioning hole of the elastic member, and the first end of the elastic member is embedded in the positioning hole of the elastic member.

In one of the embodiments, the sleeve is provided with a stepped hole matching the firing pin, and the stepped hole has a stepped surface, and the firing pin is fixed at the bottom of the installation cavity after passing through the stepped hole, and the firing pin is fixed on the bottom of the installation cavity. A limit piece matched with the stepped surface is also sleeved.

In one of the embodiments, the breech is also provided with at least one second exhaust hole communicating with the installation cavity.

In one of the embodiments, the mortar launching device further includes an inflatable tire, and the inflatable tire is sleeved between the shaft sleeve and the firing pin.

In one of the embodiments, the contact surface between the shoulder and the breech is a conical surface.

In one embodiment, the elastic member is a spring.

In one of the embodiments, the shoulder is provided with a positioning portion for positioning the projectile.

In one of the embodiments, the breech is detachably connected to the barrel through threads.

The advantages or principles of the foregoing technical solutions are described below:

The above-mentioned mortar launching device has at least one first exhaust hole at the gun tail. When loading, the shell slides into the gun bore. The squeezed air in the middle is smoothly discharged from the first vent hole, which makes the projectile slide faster than the traditional mortar; when the projectile slides to the bottom, the projectile hits the blocking part, causing the shoulder to move down and the elastic part to be compressed. At this time, the first vent hole is blocked, and the shell touches the firing pin simultaneously, firing the primer of the basic charge tube of the shell and igniting the gunpowder. When the shell rushes out of the barrel, the gunpowder gas pushes the shell to move, and another utility model acts on the sealing part, which further makes the shoulder and the gun tail tightly fit and seals the first vent hole to prevent the gunpowder gas from leaking out. When the shell flies out of the barrel, the gas pressure in the barrel drops rapidly, the elastic member returns to its original state, and the first exhaust hole is connected to the barrel again, completing a firing cycle. The mortar launching device can adopt a barrel inner diameter with a small gap under the premise of ensuring that the mortar shell can slide down reliably and the air is discharged from the first exhaust hole in the gun tail, so that the initial velocity of the shell can be increased and the shooting range can be increased. , while effectively improving shooting accuracy.

Description of drawings

Fig. 1 is the structural representation of the mortar launcher of traditional mortar;

Fig. 2 is the structural representation of the mortar launcher described in the embodiment of the present invention;

Fig. 3 is a schematic diagram of the state of the mortar launching device (before the shell is fired) described in the embodiment of the present invention;

Fig. 4 is a schematic view of the state of the mortar launching device (when the shell is fired) according to the embodiment of the present invention;

Fig. 5 is a schematic diagram of the state of the mortar launching device (after the shell is fired) according to the embodiment of the present invention.

Explanation of reference signs:

1. Barrel, 2. Gun breech, 3. Elastic part, 4. Blocking part, 5. Firing pin, 6. Tire expansion, 20. First exhaust hole, 21. Installation cavity, 22. Second exhaust Hole, 40, axle sleeve, 41, shoulder, 51, limiter, 400, positioning hole of elastic member, 401, stepped hole, 410, positioning part.

Detailed ways

Embodiments of the present utility model are described in detail below:

As shown in Figures 2 and 3 (the direction of the arrow is the direction of gas discharge), the mortar launching device described in this embodiment includes a breech 2, an elastic member 3, a blocking member 4 and a cylindrical barrel 1 with a bore. , the breech 2 is installed at one end of the barrel 1, and the breech 2 is provided with a firing pin 5 located in the bore, and the blocking member 4 includes a sleeve 40 and a protrusion arranged on the outside of the sleeve 40 Shoulder 41, the bushing 40 is set outside the firing pin 5, the first end of the elastic member 3 abuts on the blocking member 4, and the second end abuts on the breech 2, the breech 2 There is at least one first exhaust hole 20 (in this embodiment, there are two first exhaust holes 20, and the two first exhaust holes 20 are arranged near the shoulder), when the elastic member 3 In the original state, the first exhaust hole 20 communicates with the gun bore; when the elastic member 3 is compressed, the shoulder 41 blocks the first exhaust hole 20. The above-mentioned mortar launching device has at least one first exhaust hole 20 at the gun tail 2. When loading, the shell slides into the gun bore. Connected, the air squeezed in the bore is smoothly discharged from the first vent hole 20, making the shell slide faster than the traditional mortar; when the shell slides to the bottom, the shell hits the blocking member 4, causing the shoulder 41 to Move, the elastic member 3 is compressed, and now the first vent hole 20 is blocked, and the shell touches the firing pin 5 simultaneously, the basic charge tube primer of the shell is fired, and the gunpowder is ignited. When the shell rushes out of the barrel, the gunpowder gas pushes the shell to move on the one hand, and the other utility model acts on the sealing member 4, which further makes the shoulder 41 and the gun tail 2 closely fit and seals the first vent hole 20, preventing the gunpowder gas from leaking out. vent. After the shell flew out of the gun barrel 1, the gas pressure in the gun bore decreased rapidly, the elastic member 3 returned to its original state, and the first exhaust hole 20 was communicated with the gun bore again to complete a firing cycle. The mortar launching device can adopt the inner diameter of the barrel 1 with a smaller gap under the premise that the mortar shell can be reliably slid down and the air is discharged from the first exhaust hole 20 in the gun tail 2, so that the initial velocity of the shell can be increased. , Increase the range, while effectively improving the shooting accuracy.

As shown in Figure 3, the breech 2 is provided with a mounting cavity 21, the bushing 40 is installed in the mounting cavity 21, the first end of the elastic member 3 abuts on the bushing 40, and the second The end abuts against the bottom wall of the installation cavity 21, and the sleeve 40 cooperates with the installation cavity 21, so that the positioning of the blocking member 4 is reliable, and the swinging of the blocking member 4 is avoided.

As shown in Figure 4, the bottom of the bushing 40 is provided with an elastic member positioning hole 400, the first end of the elastic member 3 is embedded in the elastic member positioning hole 400, through the elastic member 3 and the elastic member positioning hole The cooperation of 400 makes the positioning of the elastic member 3 reliable and prevents the elastic member 3 from being separated from the blocking member 4. The bushing 40 is provided with a stepped hole 401 matching the firing pin 5. The stepped hole 401 has a stepped surface. The firing pin 5 is fixed at the bottom of the installation cavity 21 after passing through the stepped hole 401. The firing pin 5 A limit piece 51 matching the stepped surface is sheathed on the outside. When installing, first place the elastic part 3 in the installation cavity 21, then put the sleeve 40 on the outside of the elastic part 3 and insert it into the installation cavity 21, and finally insert the striker 5 into the stepped hole 401 and pass through the bottom of the installation cavity 21 The threaded holes are fixed, and the whole assembly process is simple and convenient. At the same time, the limiting member 51 also plays a role in limiting the axial movement stroke of the blocking member. The limiting member 51 used in this embodiment is a limiting nut.

In this embodiment, the breech 2 is also provided with a second exhaust hole 22 communicating with the installation cavity 21, and the second exhaust hole 22 is at least one (in this embodiment, the second exhaust hole 22 are two, and the two second exhaust holes 22 are arranged at the position close to the elastic member). When the shell slides into the gun bore, the compressed air can be discharged from the first exhaust hole 20 and the second exhaust hole 22 at the same time, further increasing the sliding speed of the shell.

Preferably, the mortar launching device described in this embodiment further includes an inflatable tire 6 , and the inflatable tire 6 is arranged at a position between the shaft sleeve 40 and the firing pin 5 . After the shell is fired, the tire 6 is elastically deformed radially by the gas pressure of the gunpowder, thereby blocking the stepped hole 401, preventing the gunpowder gas from leaking from the second vent hole 22, and preventing the elastic member 3 from being blown by the gunpowder gas. Ablation.

As shown in FIG. 3 , the contact surface between the shoulder 41 and the breech 2 is a conical surface, and the gas is discharged smoothly, and after the shell is fired, the shoulder 41 and the breech 2 are closely fitted, and the first exhaust hole 20 The sealing effect is better. In this embodiment, the elastic member 3 is a spring, and the spring is a standard part, which is durable, reliable and easy to replace. In other embodiments, an elastic sleeve can also be used as the elastic member 3 .

As shown in FIGS. 4 and 5 , the shoulder 41 is provided with a positioning portion 410 for positioning the projectile. The positioning portion 410 enables the projectile to effectively contact the blocking member 4 , which helps the projectile to push the blocking member 4 . The breech 2 is detachably connected to the barrel 1 through threads, which makes maintenance and parts replacement more convenient. Because only the mortar launcher has been improved, the mortar shells, gun mounts, base plates, aiming devices and accessories etc. do not need to be replaced and can be used directly.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the utility model, and the description thereof is relatively specific and detailed, but it should not be understood as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (10)

1. A mortar launcher, characterized in that, comprises a gun tail, an elastic member, a blocking member and a cylindrical barrel with a bore, the gun tail is installed on an end of the barrel, and the gun tail is provided with There is a firing pin located in the gun bore, the blocking member includes a bushing and a shoulder arranged outside the bushing, the bushing is set outside the firing pin, and the first end of the elastic member abuts against the blocking member On, the second end abuts on the breech of the gun, and at least one first exhaust hole is provided on the breech of the gun. When the elastic member is in the original state, the first exhaust hole communicates with the bore of the gun; when the elastic When the element is compressed, the shoulder blocks the first vent hole. 2. The mortar launching device according to claim 1, wherein an installation cavity is provided in the breech, the bushing is installed in the installation cavity, and the first end of the elastic member abuts against On the shaft sleeve, the second end abuts against the bottom wall of the installation cavity. 3 . The mortar launching device according to claim 2 , wherein a positioning hole of an elastic member is provided at the bottom of the sleeve, and the first end of the elastic member is embedded in the positioning hole of the elastic member. 4 . 4. The mortar launcher according to claim 2, wherein a stepped hole matching the firing pin is provided in the bushing, the stepped hole has a stepped surface, and the firing pin passes through the stepped hole. It is fixed at the bottom of the installation cavity, and the firing pin is also sleeved with a limit piece matching the stepped surface. 5. The mortar firing device according to any one of claims 2-4, characterized in that, the breech is also provided with a second vent hole communicating with the installation chamber, the second vent hole is at least one. 6 . The mortar launching device according to claim 5 , further comprising an inflatable tire, and the inflatable tire is sleeved between the shaft sleeve and the firing pin. 7 . 7. The mortar launching device according to claim 5, wherein the contact surface between the shoulder and the breech is a conical surface. 8. The mortar launching device according to claim 5, wherein the elastic member is a spring. 9. The mortar launching device according to claim 5, wherein a positioning portion for positioning the projectile is provided on the shoulder. 10. The mortar launching device according to claim 5, characterized in that, the breech is detachably connected to the barrel through threads.