JP2787274B2 - Method and device for feeding ammunition of a cannon - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for feeding ammunition of a cannon capable of reducing the stroke length of a breech hole.

[0002]

2. Description of the Prior Art The stroke of the breechhole in a conventional cannon is defined as a rifle loading a ammunition from a forward stop position where the breechloader loads ammunition into a gun barrel, closes and fires a bullet while the gun is rearwardly seated. Is determined so as to take a rearward stop position at which ammunition supplied from can be sent. Therefore, the stroke of the breech bolt is affected not only by the length of the ammunition and the length of the closed portion of the breech bolt, but also by the rear seating length of the cannon. Then, in order to continuously feed from the ammunition to the rear-restored cannon, it is necessary to perform ammunition while the relative position between the cannon and the ammunition is changing.

There are the following methods for supplying a bullet while the relative position between the cannon and the bullet feeder is changing. (1) The ammunition and the cannon are connected by a flexible ammunition duct, and the ammunition is supplied while following the rearward-returning movement of the cannon by the ammunition duct. In this case, the receiving position of the ammunition to the cannon is constant, so that the rear seating motion of the cannon does not affect the stroke of the breech bolt. (2) As another method, the stroke S of the breech bolt 50 is previously set to be longer by the maximum rear seat length X of the cannon, as shown in FIG. There is a way to feed. Accordingly, the position at which the ammunition 52 from the ammunition supply device 51 is received by the gun mount 53 is always in front of the breech shaft 50, regardless of the position of the machine gun rearwardly seated (even if it is seated at the maximum rearward). Therefore, the ammunition 52 can be received without interfering with the play bottom 50. Reference numeral 54 denotes a gun barrel.

[0004]

However, such a conventional method for feeding ammunition of a cannon has the following technical problems. (1) In the method using the ammunition duct, the ammunition duct is always swung by the rear-seating motion of the cannon. This is disadvantageous in terms of the life of the ammunition duct. Although this method is suitable for supplying ammunition of a so-called belt link type in which ammunition is connected by a link, a so-called linkless ammunition without a link has a complicated structure and is difficult to use. Furthermore, the weight of the ammunition is remarkably increased in a cannon having a medium caliber or larger, and it is difficult to use a flexible ammunition duct.

(2) On the other hand, a method of securing a position for receiving the ammunition 52 from the ammunition unit 51 to the mount 53 in advance by a maximum rear seat length X in advance is a medium caliber cannon of linkless bullets. However, the stroke S of the breech hole 50 is always long by the rear seat length X. When the stroke S of the breech bolt 50 becomes longer, the following problems occur. A. In the case of the same firing speed, the average speed of the breech hole 50 increases in proportion to the stroke S of the breech hole 50, which easily causes troubles such as seizure of parts and wear. I. In addition, the increase in the average speed of the breech hole 50 appears as an increase in the force required to accelerate and decelerate the breech hole 50. as a result,
When the breech bolt 50 is driven by external power, the capacity of the drive source increases. C. Further, an increase in the stroke S of the breech bolt 50 has the undesirable consequence of an increase in the length and weight of the cannon.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional technical problem.
According to the configuration of the invention, the gun mount 2 is configured to sequentially perform the operations of moving forward, stopping forward, moving backward, and stopping backward in the direction of the center axis of the barrel 1.
A method of feeding ammunition for a machine gun that transfers a munition 10 from fixed ammunition units 13a and 13b to a gantry 2 which is rearwardly seated.
a, 13b, receiving port 2e for ammunition 10 to gun mount 2
In the range where the mount 2 has advanced or retreated most
The transfer port 13i of the a, 13b is provided so as to be connectable, and the ammunition pusher 9 which moves forward in conjunction with the backward movement of the breech base 5 from when the breech bottom 5 takes a retreating stroke to when it stops retreating.
a and 9b, the ammunition 10 after being fed into the gantry 2 from the ammunition units 13a and 13b and before being sent to the loading preparation position in front of the breech bolt 5 is pushed forward, and the rear surface of the ammunition 10 is pushed out. A method for feeding ammunition for a cannon, wherein the ammunition 10 is provided at a position in front of a front surface of the breech bed 5 which is stopped in a retreating position, and a position in a front-rear direction at which the ammunition 10 can be sent to the loading preparation position. According to a second aspect of the present invention, there is provided a breech bolt 5 movably housed in the gun mount 2 so as to sequentially perform operations of forward, forward, stop, retreat, and retreat stop in the central axis direction of the barrel 1. Ammunition delivery device for a machine gun that transfers the ammunition 10 from the supplied ammunition units 13a and 13b to the carriage 2 that is rearwardly seated, and the receiving port 2e for the ammunition 10 from the ammunition units 13a and 13b is connected to the gun. In the range from when the gantry 2 is provided with the delivery port 13i of the bullet feeders 13a and 13b so as to be connectable in a range where the gantry 2 is most advanced or retreated, and after the breech boat 5 has retreated a predetermined length, until the gantry 2 stops retreating. First rack 5 formed on breech bottom 5
d, a main gear 16 rotatably supported by the gantry 2 so as to mesh with the sub gears 14, sub gears 14a, 14b rotatably supported by the gantry 2 and integrally rotating with the main gear 16, and sub gears 14a, 1
The second racks 9e, 9f meshing with the 4b are formed, and the ammunition pushers 9a, 9b are slidably supported on the gantry 2 back and forth.
And the ammunition pushers 9a, 9
b forward, and the gun mount 2
The ammunition 10 after being sent into the inside and before being sent to the loading preparation position in front of the breech bottom 5 is loaded with the ammunition pushers 9a, 9
b to push forward the rear surface of the ammunition 10.
Ammunition feeding device for a cannon, which can be located forward of a front surface of the cannon.

[0007]

According to the first aspect of the invention, the bullet feeders 13a, 13a
b, the receiving portion 2 e of the ammunition 10 from the gun mount 2
13a, 13b in the range in which
Of the ammunition 10 irrespective of the position in the front-rear direction of the gantry 2 to be rear-seated.
Is sent into the gantry 2. If the breech bottom 5 takes a retreating stroke, the ammunition pushers 9a and 9b move forward in conjunction with the retreat movement of the breech bottom 5 until the breech bottom 5 stops retreating. With the forwardly moving ammunition pushers 9a and 9b,
After the ammunition 10 has been fed into the gantry 2 from the feeders 13a and 13b but has not been sent to the loading preparation position in front of the breech bolt 5, the ammunition 10 is pushed forward, and the rear surface of the ammunition 10 is stopped and retracted. At the front of the front of the play bottom 5. As a result, the ammunition 10 is provided with a position in the front-rear direction that can be sent to the loading preparation position in front of the breech pad 5.
The loading preparation position can be taken.

[0008] According to the second aspect of the invention, the bullet feeder 13a,
The receiving port 2e for the ammunition 10 from the gun 13b to the gun mount 2 is provided with the ammunition feeders 13a, 13a in a range where the gun mount 2 is moved forward or backward most.
Since the delivery port 13i of 3b is provided so as to be connectable,
The ammunition 10 is fed into the gantry 2 irrespective of the position of the gantry 2 to be rearranged in the front-rear direction. Then, the first rack 5d formed on the breech bottom 5 meshes with the main gear 16 rotatably supported by the gantry 2 from when the breech bottom 5 retreats by a predetermined length until it stops retreating. Rotate. Main gear 1
By the rotation of 6, the auxiliary gears 14a and 14b rotatably supported by the gantry 2 rotate integrally with the main gear 16. Since the auxiliary gears 14a, 14b are meshed with the second racks 9e, 9f of the ammunition pushers 9a, 9b, the auxiliary gears 14a, 1b
Due to the rotation of 4b, the ammunition pushers 9a and 9b slidably supported on the mount 2 forward and backward move forward.

The ammunition pusher 9 accompanying the retreat of the breech bottom 5
Due to the forward movement of the a and 9b, the ammunition 10 after being fed into the gantry 2 from the ammunition feeders 13a and 13b and before being sent to the loading preparation position in front of the breech bolt 5 becomes the ammunition pusher 9
The ammunition 10 is pushed forward by the a and 9b so that the rear surface of the ammunition 10 is forward of the front surface of the breech bolt 5. Thereby, the play bottom 5
The ammunition 10 is provided with a position in the front-rear direction at which the ammunition 10 can be sent to the loading preparation position in front of the ammunition.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show an embodiment of the ammunition feeding device for a cannon according to the present invention. First, the main part of the cannon will be described with reference to FIGS. The cannon has a gun mount 2 to which the gun barrel 1 is fixed and which is mounted on a retreating / seating device 17 and then rearwardly seated. A play bottom 5 slidably accommodated in a moving path 2a of the gun mount 2 shown in FIG. 3 so as to sequentially perform operations of forward movement, forward stop, retreat, and reverse stop in the axial direction; One well-known feeding wheel 4 for supplying the ammunition 10 intermittently during the load preparation position.
And The first rack 5
d is formed.

As shown in FIG. 1, the center axis 4a of the bullet feed wheel 4 is rotatably supported on the mount 2 via the bearing 3, and is interlocked with the rotation of the cam drum 7 by an intermittent interlocking mechanism (not shown). Perform intermittent rotation. The central axis 4a is located above the movement path 2a as shown in FIG. Further, the bullet feed wheel 4 has four notches 4b at predetermined intervals in the circumferential direction, and one of the bullet feeders 13a (or 13) shown in FIG.
The ammunition 10 sent from b) to each notch 4b through the bullet supply passage 13e (or 13f) is intermittently sent to a loading preparation position between the breech hole 5 and the barrel 1. That is, when the breech bolt 5 takes the retreat stop position, the bullet feed wheel 4 rotates 1/4 turn, that is, one pitch, by the intermittent interlocking mechanism, feeds the ammunition 10 in front of the breech bolt 5, and the breech bolt 5 takes the forward position. When is stopped. The ammunition 10 received by the notch portion 4b and sent to the loading preparation position by the rotation of the bullet feed wheel 4 is a circle formed bilaterally symmetrically on the support portions 13j and 13k on both sides of the gun mount 2 as shown in FIG. It is guided by the arc-shaped guide surfaces 13g and 13h.

The notch 4b of the bullet feed wheel 4
Has a shape and dimensions through which the breech bolt 5 can pass, and the bullet feed wheel 4 allows the breech bolt 5 to move forward or backward without any hindrance while stopping, and also serves as a guide around the outer periphery of the ammunition 10. The ammunition units 13a and 13b are arranged on the left and right sides of the cannon, and are fixed independently of the rearward movement of the cannon. Bullet supply passages 13e, 13f of the respective bullet feeders 13a, 13b
Are formed at the front ends thereof, and the guide portions 13 are formed by extending the front wall of each of the transfer ports 13i.
c and 13d project from the left and right receiving openings 2e of the gun mount 2 into the machine gun by a predetermined length, guide the front surface of the ammunition 10, and keep it at a fixed position. That is, the guide portions 13c and 13d
Is the ammunition 1 received in the notch 4b of the bullet sending wheel 4.
0 (10b), and does not interfere with the projectile 2 through the respective receiving ports 2e from the respective receiving ports 13i of the bullet supply passages 13e and 13f.
The projecting length into the gantry 2 is set so that the front end position of the next ammunition 10 (10c) fed into the inside is regulated as shown in FIG. The ammunition 10 (10c) immediately after being sent into the gantry 2 is supported by the support portion 13 shown in FIG.
Roll on the upper surface of j, 13k.

FIG. 2 and FIG. 5 show a state in which the cannon is not rearwardly seated and the breech boat 5 is stopped in the backward movement.
The rear end face of each delivery port portion 13i of 3b coincides with the rear end face of the delivery port portion 2e of the gantry 2. In this state, the guide portions 13c and 13d secure a predetermined dimension that allows the rear seat of the mount 2 between the guide wall 2b and the front wall 2b near the receiving opening 2e of the mount 2, that is, the maximum rear seat length A. It is sent from each delivery port 13i of the bullet feeders 13a, 13b, and the guide portions 13c, 1
The ammunition 10 (10) with the front face supported by 3d
c) The position of the rear end surface is behind the front surface of the play bottom 5 by an L dimension. The relationship between the maximum rear seat length A and the L dimension is that the rear end of the ammunition 10 (10c) is lifted when the machine gun is fully rear seated by the maximum rear seat length A by the action of the retreating and returning device 17. Or slightly ahead of the front surface of the breech bolt 5, so that L ≦ A. In this manner, the ammunition 10 from the ammunition units 13a and 13b
The receiving port 2e is provided so as to be connectable to the receiving port 13i of the bullet feeders 13a and 13b in a range in which the gantry 2 moves forward or backward most.

As shown in FIG. 1, the cam drum 7 is rotatably supported at both front and rear ends by a gun mount 2 via bearings 8, is connected to a drive source 6 such as a motor, and rotates by receiving a rotational force.
On the outer peripheral surface of the cam drum 7, the forward end is moved to the play bottom 5-
An endless cam groove 7a for repeatedly performing a series of operations of retreat and retraction stop is formed, and the engaging protrusion 5a of the play bottom 5 is engaged with the cam groove 7a of the cam drum 7. Thus, the driving bottom 5 is driven so as to perform the above-described series of operations by the rotational driving of the cam drum 7 in one direction.

The rear end of the gun mount 2 is located between the breech shaft 5 which takes the retreat stop position and the center axis 4a of the bullet sending wheel 4, and is provided with an extension of the center axis of the barrel 1. As shown in FIG. 3, the orthogonal rotation shaft 15 is
It is horizontally and rotatably supported by 2d. A main gear 16 is fixed to a central portion of the rotating shaft 15, and after the play bottom 5 has retreated a predetermined length, the first rack 5 d of the play bottom 5 can engage with the main gear 16 until the retreat stop position is taken. . Further, auxiliary gears 14a and 14b are fixed to both ends of the rotating shaft 15, respectively. The auxiliary gears 14a and 14b are always meshed with second racks 9e and 9f formed on the lower surfaces of the ammunition pushers 9a and 9b, respectively. I have.

The ammunition pushers 9a, 9b are located on the left and right sides of the center axis 4a of the bullet feed wheel 4, respectively, and slidably move in the direction of the center axis of the gun barrel 1, respectively.
d, and can support the rear surfaces of the ammunition 10 (10b) received in the notches 4b of the bullet feed wheels 4 from the bullet feeders 13a and 13b, respectively. Also, ammunition pusher 9
a and 9b are support portions 2c and 2 of the mount 2, as shown in FIG.
d is engaged with the slots 9c and 9d, so that the slots 9c and 9d extend in the central axis direction of the barrel 1.
The rearward movement is regulated by the pin 11 in particular. Such ammunition pushers 9a and 9b are arranged in respective cavities, and are constantly elastically urged rearward by an elastic body 12 such as a spring or rubber interposed between the respective pins 11. . Further, guide portions 9g and 9h curved around the central axis 4a of the bullet feeding wheel 4 are fixedly provided at the front ends of the ammunition pushers 9a and 9b, respectively, and are received in the notches 4b. Ammunition 10 (10
b) to support the rear surface of the ammunition 10 (10b) when feeding it to the loading preparation position, which is an extension of the central axis of the barrel 1. The ammunition pusher 9 shown by a two-dot chain line in FIGS.
a 'and 9b' are the most retreated positions, that is, the state where the engagement between the first rack 5d and the main gear 16 has been released. In this state, the front surfaces of the ammunition pushers 9a 'and 9b'
Of the receiving port 2e.

When the play bottom 5 retreats and approaches the retreat position, the first rack 5d formed on the upper surface of the play bottom 5 engages with the main gear 16, and thereafter the main gear 16 is turned until the play bottom 5 stops. . During this time, the auxiliary gears 14a, 14b fixed to the rotating shaft 15 are engaged with the second racks 9e, 9f of the ammunition pushers 9a, 9b, respectively, so that the main gear 1
The ammunition pushers 9a, 9b are moved in the direction opposite to the direction of movement of the breech bolt 5, that is, forward, while rotating in the same direction as 6. The amount of movement of the ammunition pusher 9a, 9b, when the bolt 5 is stopped retracted, ammunition pusher 9a, as the front of 9b becomes forward by slightly L ₁ dimension of the Figure 2 from the front of the breech 5, the gears 16, 14a, 14b, the number of teeth and the main gear 16
And the first rack 5d. Accordingly, the ammunition pushers 9a, 9a,
9b is moved forward by L + L ₁ dimension of.

When the ammunition pushers 9a and 9b move forward, the ammunition 10 (10b) received in the notch 4b of the bullet sending wheel 4 is pushed out and the ammunition 10 (10b) is pushed out.
Rear surface ammunition pusher 9a, likewise become forward by slightly L ₁ dimension of the Figure 2 from the front of the breech 5 and the front of 9b of (10b). In this manner, the ammunition 10 (10b) sent into the gantry 2 from the ammunition feeders 13a and 13b is pushed forward by the ammunition pushers 9a and 9b, and the ammunition 10 (10b) is pushed forward.
(10b) The rear surface is set to a position in front of the front surface of the breech pad 5 that is stopped and retracted, and the ammunition 10 (10b) is given a position in the front-rear direction that can be fed to a loading preparation position in front of the breech base 5. In order to favorably move the ammunition pushers 9a, 9b, the auxiliary gears 14a, 1
The diameter of 4b is larger. Thereby, the play bottom 5
Is expanded and transmitted to the ammunition pushers 9a, 9b, so that the ammunition pushers 9a, 9b can be operated in a state where the speed immediately before the breech stop 5 is stopped is small, and the impact acting on each component is reduced. be able to.

When the breech hole 5 retreats and stops, and the forward movement of the ammunition pushers 9a and 9b is completed, the bullet feed wheel 4 rotates one pitch and the ammunition 10 (10b) received in the notch 4b. Is sent to the loading preparation position of the ammunition 10 (10a). During this transfer, the ammunition pusher 9a (9
The front surface of the guide portion 9g (9h) of b) is the ammunition 10 (10
b) Guide the rear end face. When the cam drum 7 further rotates, the breech bolt 5 starts to advance, and pushes the ammunition 10 (10a) sent to the front thereof into the barrel 1 fixed to the gun mount 2. Meanwhile, the auxiliary gears 14a and 14b
The ammunition pushers 9a and 9b meshing with the e and 9f receive the action opposite to that at the time of being pushed out from the play bottom 5 and retreat, and after the play bottom 5 is separated from the main gear 16, the pin 11 becomes
c and 9d, and takes a retracted position shown by a two-dot chain line in FIGS. 2 and 5 so as not to hinder the movement of the next ammunition 10 (10c). Each elastic body 12 is attached to each ammunition pusher 9
The pins 11 are securely locked to the front ends of the elongated holes 9c and 9d, and the respective pushers 9a and 9b are elastically urged so as to maintain the retracted positions.

Next, the operation of the above embodiment will be described. Now, the ammunition 10 (10b) is supplied from one of the feeders 13a through the feed passage 13e to the notch 4b of the bullet sending wheel 4.
And the ammunition 10 (10a) has been sent to the loading preparation position. The rotation of the cam drum 7 causes the breech bolt 5 to move forward, forward, stop, retreat, and stop backward. The forward motion pushes the ammunition 10 (10a) into the barrel 1, and while the breech deck 5 stops moving forward, it stops moving. Gun barrel 1
The rear end is closed and a bullet is fired. After that, the playground 5
Is released, and the play bottom 5 shifts from the state in which the forward stop is stopped to the backward stroke.

When the play bottom 5 retreats by a predetermined amount and approaches the retreat position, the first rack 5d of the play bottom 5 starts to mesh with the main gear 16, so that the rotating shaft 15 and the sub gears 14a, 14a.
b rotates in the same direction. Due to the rotation of the auxiliary gears 14a and 14b, the ammunition pushers 9a and 9b meshing with the auxiliary gears 14a and 14b and the second racks 9e and 9f are moved to the support portion 2 of the gantry 2.
Since the elastic body 12 is compressed and moved forward while being guided by c and 2d, the ammunition 10 (10b) fed into the notch 4b of the bullet sending wheel 4 is pushed forward.
The forward pushing of this ammunition 10 (10b)
Until it takes the retraction stop position, and the ammunition pusher 9a,
The front surface of 9 b is slightly forward of the front surface of the breech bolt 5. The breech bolt 5 has an ammunition pusher 9a,
9b is operated, the first rack 5d of the breech bolt 5 is moved to the main gear 1 in a state where the retreat speed of the breech bolt 5 has already been reduced and is small.
Start meshing with 6. For this reason, although the diameter of the sub gears 14a and 14b is set to be larger than the diameter of the main gear 16, the movement of the breech bolt 5 is enlarged and transmitted to the ammunition pushers 9a and 9b. Movement speed is also kept relatively low, and the ammunition pushers 9a, 9b
Does not damage the ammunition 10 (10b).

When the cam drum 7 further rotates, the bullet feed wheel 4 rotates one pitch while the play bottom 5 takes the retreat stop position, so that the ammunition 10 (10b) of the notch 4b extends the central axis of the barrel 1. Move to upper loading preparation position. Thereafter, the breech bolt 5 starts moving forward and pushes the ammunition 10 (10a) at the loading preparation position into the barrel 1. Meanwhile, the ammunition pushers 9a and 9b are connected to the first rack 5d and the main gear 1
6, the shaft 11 and the auxiliary gears 14a, 14b and the second racks 9e, 9f are retracted by the action opposite to that when they are pushed out, and the pin 11 is engaged with the front ends of the elongated holes 9c, 9d. retracted position, i.e. returned to L + L ₁ dimension of only the rear position shown in FIG. 2, it is possible to feed into the cutout portion 4b of Okutama wheel 4 of the next ammunition 10 (10c). Even after the first rack 5d of the breech bolt 5 is separated from the main gear 16, the breech bolt 5 performs a predetermined forward travel. Each ammunition pusher 9a, 9b
The retraction / return position where the front ends of the long holes 9c and 9d are locked to the pins 11, respectively, is elastically maintained by the elastic members 12.

The above is a description of a state in which the cannon is not rear-seat. However, even if the cannon is rear-seat (retreated), the rear-seat allows the bullet supply passages 13e and 13f shown in FIG. Ammunition 1
0 (10c, 10d) only causes a relative forward displacement of at most the maximum rear seat length A, and the ammunition 10 (10c) in the bullet supply passages 13e, 13f is retracted and returned. There is no hindrance in passing the pushers 9a and 9b through the front of the pushers 9a and 9b toward the notch 4b, and the ammunition 10 (1) supplied to the notch 4b is not affected.
0b) is always pushed forward from the front surface of the breech bolt 5 by the action of the ammunition pushers 9a, 9b. Thus, it is possible to send bullets regardless of the size of the back chair.

By the way, in the above embodiment, the play bottom 5
A main gear 16 rotatably supported by the gantry 2 so as to mesh with the first rack 5d formed at the bottom, and auxiliary gears 14a, 14 rotatably supported by the gantry 2 and integrally rotating with the main gear 16.
b and the second rack 9 meshing with the auxiliary gears 14a and 14b
e and 9f are formed, and ammunition pushers 9a and 9b are provided on the gantry 2 so as to be slidable back and forth, but the ammunition pushers 9a and 9b move forward by a predetermined length in conjunction with the backward movement of the breech bolt 5. By 9b, the ammunition 10 sent from the ammunition units 13a and 13b to the gantry 2 may be pushed forward. For this purpose, for example, it is possible to provide a cylinder device which is immersed by the retreating movement of the play bottom 5, and a cylinder device which pushes out the ammunition pushers 9a and 9b by the immersion operation of the cylinder device. .

[0025]

As will be understood from the above description,
According to the method and apparatus for feeding ammunition of a machine gun according to the present invention, the ammunition pusher is used to send ammunition after being fed from the ammunition supply to the gun mount and before being sent to the loading preparation position in front of the breech hole, Send forward than the front when the breech sole retreats. For this reason, it can be applied to medium caliber or larger cannons that use linkless bullets, and it is not necessary to increase the length of the breech bolt in consideration of the rear seat length. . As a result, the torque of the drive source for driving the breech shaft was reduced, and the length and weight of the cannon were reduced. In addition, the average speed of the breech hole decreases in proportion to the stroke of the breech hole, and troubles such as seizure and wear of parts can be prevented well.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a cannon according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II of FIG.

FIG. 3 is a sectional view taken along the line III-III of FIG. 1;

FIG. 4 is a sectional view taken along the line IV-IV of FIG. 1;

FIG. 5 is an enlarged sectional view showing a main part of FIG. 2;

FIG. 6 is an explanatory view showing a conventional example.

[Explanation of symbols]

1: Gun barrel, 2: Gun mount, 2e: Receiving port, 5: Bottom deck, 5
d: first rack, 7: cam drum, 9a, 9b: ammunition pushers, 9e, 9f: second rack, 10: ammunition, 13
a, 13b: bullet feeder, 13i: delivery port, 14a, 1
4b: sub gear, 16: main gear.

Claims (2)

(57) [Claims] A breech hole (5) movably housed in a gun mount (2) so as to sequentially advance, stop, retreat, and retreat in the direction of the center axis of the barrel (1). A method for feeding ammunition (10) from a fixed ammunition (13a, 13b) to a carriage (2) for returning to the rear, wherein the ammunition is fed from the ammunition (13a, 13b). The ammunition (10e) receiving portion (2e) to the rack (2) is set in the range where the gun rack (2) is moved forward or backward most.
The delivery port (13i) of b) is provided so as to be connectable, and the ammunition pusher moves forward in conjunction with the backward movement of the breech base (5) from when the breech bottom (5) takes a retreating stroke until it stops retreating. (9a, 9b), the bullet feeder (13a, 13b)
b) into ammunition (2) and before being sent to the loading preparation position in front of the breech bolt (5);
0) is pushed forward, and the rear surface of the ammunition (10) is set at a position forward of the front surface of the breech stop (5), which is stopped and retracted. Ammunition delivery method for a cannon, characterized in that it is given. 2. A breech hole (5) movably accommodated in a gun mount (2) so as to sequentially perform operations of advance, stop, retreat, and retreat stop in the direction of the center axis of the barrel (1). An ammunition delivery device for a machine gun which transfers ammunition (10) from a fixed ammunition device (13a, 13b) to a carriage (2) to be rearranged. Ammunition (1
0), the transfer rack (2i) provided so as to be connectable to the transfer opening (13i) of the bullet feeder (13a, 13b) in the range in which the mount (2) has advanced or retracted most. ) And rotatably supported by the gun mount (2) so as to mesh with the first rack (5d) formed on the breech hole (5) from when the breech hole (5) retreats by a predetermined length until it stops retreating. Main gear (1
6) and the main gear (1), which is rotatably supported by the gun mount (2).
6), and a second rack (9e, 9) meshing with the auxiliary gear (14a, 14b) and the auxiliary gear (14a, 14b).
f) is formed, and is provided with an ammunition pusher (9a, 9b) slidably supported forward and backward on the gun mount (2), and the ammunition pusher (9a, 9b) is moved forward with the retreat of the play bottom (5). The ammunition (10) which has been moved and sent from the ammunition (13a, 13b) into the gantry (2) and has not yet been sent to the loading preparation position in front of the breech bolt (5) is transferred to the ammunition pusher. (9
a, 9b) for pushing forward the ammunition (10) so that the rear surface of the ammunition (10) can be positioned forward of the front surface of the breech bolt (5).