KR960002127B1 - Opening and shutting device for oil pressure breech - Google Patents

Abstract

A cannon rear opening/closing apparatus is made up of a cannon mount(10) installing an opening cam(13) in the rear; a rear annulus(20) which is constrained in the cannon mount(10) in the rear part and moves back-and-forth; a closer(30) for opening and closing the rear of the cannon annulus; a cam follower(42) including a roller(43) interacting with the opening cam(13) and rotatably assembled to the cannon annulus(20); and a crank(44) fixed to the shaft of the cam follower(42) and attaching a elevation bar(45) for elevating the closer(30). It also includes a hydraulic cylinder(50) fixed on the upper part of the cannon mount(10), a rack gear(60) to be geared with the crank gear of the cam follower(42), and a connecting rod(70) to transfer feeding force to the rack gear(60).

Description

Hydraulic Pomi Switchgear

1 is a side view showing the configuration of the prior art.

Figure 2 is a side view showing the state of the pomi open state of the prior art.

Figure 3 is a side view showing a pomi open state of the present invention.

Figure 4 is a side view showing the pomi closed state of the present invention.

* Explanation of symbols for main parts of the drawings

10: four mount 12: support

13: open cam 20: pomihwan

22: open and close retainer 24: shaft

26: separation jaw 30: closure

32: connecting groove 34: opening groove

36: closed groove 41: crank gear

42: cam follower 43: roller

44: crank 45: rising bar

50: hydraulic cylinder 52: piston rod

54: locking groove 60: rack gear

62: stopper 70: connector

71: pin 72: jamming projection

73: tension spring 74: rising protrusion

The present invention relates to a pomi opening and closing device of a cannon (self-propelled artillery or howitzer), in particular to enable the closing of the closing device to open and close the pomi to enable the automatic opening and closing, and at the same time the firing rate at high altitude fire It relates to a foam opening and closing device that can be increased.

In general, the rear of the fortune ring constituting the rear end of the cannon is provided with a closing device, the rear of the fortune ring is opened only when the closing device is to be able to insert the shell and the charge. The present invention relates to a device for opening and closing the rear of the fortune ring. Looking at the conventional pomi opening and closing device that has been carried out so far with reference to Figure 1, the rear end has a support 12 provided with an open cam 13 The formic ring 20 is fixed to the mount 10 and is retracted (reversed) and retracted (advanced) in a state of being restrained with respect to the mount 10 at the rear end of the mount 10. Inside the pomi ring 20 is provided with a closing device 30 for lifting up and down by the opening and closing means fixed to the pomi ring to open and close the rear of the pomi ring (20). Connecting grooves 32 are formed in the middle of the closing device 30, and the opening grooves 34 and the closing grooves 36 are formed above and below one side. The opening and closing holder 22 is inserted into any one of the opening groove 34 and the closing groove 36 to maintain the open or closed state of the closing device 30 on the pomi ring 20. The opening and closing means has a crank 44 which is rotatably coupled with the cam follower 42 and the cam follower 42 to the pomi-ring 20, and is fixed on the shaft 24. do. One side of the crank 44 is provided with a rising bar 45 inserted into the connection groove 32 of the closure 20 to raise the closure 30 when rotating. At one central side of the cam follower 42, the roller 43 which interferes with the open cam 13 of the support 12 when the pomi-ring 20 is returned is spring-tipped, so that the cam follower 42 is caused by the interference. Will rotate. At the time of retreat of the pomi-ring 20, the roller 43 is pressed on the inclined surface 14 formed on the open cam 13 and is compressed to prevent the cam follower from rotating. At the end of the cam follower 42, a separation cam 46 is formed to remove the opening / closing holder 22 from the closing groove 36 at the time of returning to allow the closing device 30 to rise. Thus, after shooting, the pomi-hwan 20, which retreats while being restrained by the four-mount 10 by gas pressure, returns to its initial position by the north-left movement of the four-mount 10, and the roller 43 of the cam follower 42 is supported. The cam follower 42 is rotated as it is caught by the open cam 13 of 12 and rides over the open cam 13. At this time, the separation cam 46 of the cam follower 42 in the initial rotation state to remove the opening and closing holder 22 was inserted into the closing groove 36 of the closing device (30). At the same time as the rotation of the working cam follower 42, the crank 44 connected to the shaft 24 is rotated, the rising bar 45 of the crank 44 is free to rotate the connecting groove 32 in the initial rotation state Done. As the rotation is further advanced, the rising bar 45 is caught on the upper end of the connecting groove 32, so that the closing device 30 protrudes above the pomi ring 20 and rises.

And when the separation cam 46 is released from the opening and closing holder 22 before the time point of the completion of the ascent is completed, the closing device 30 is completed, the opening and closing holder 22 is closed by the spring restoring force 30 It is inserted into the opening groove 34 of the fixing the closing device 30 is made to open the pomi. In this state, when loading the shell and the loader and then lowering the closure, when the loader pulls the opening / closing holder 22 away from the open groove 34, the closure 30 descends for its own weight, and at this time, the crank 44 And the cam follower 42 is lowered together by the lowering and is returned to its original position as shown in FIG. When shooting in such a state, shooting can be continued by repeating the above operation.

However, such a conventional pomi opening and closing device has a lot of problems during high angle shooting as well as cumbersome when opening and closing the pomi. That is, when the closing machine descends, the loader has to pull out the opening and closing holder by hand, and there is a hassle. As it gets bigger, the frictional resistance between the rear surface of the crusher and the inner surface of the pomi ring deepens, so that the lowering of the closing device is not completed, and a failure of the trigger occurs. In order to achieve the closing, the loader must press the upper part of the closing device manually. In particular, there was a risk of fire accidents caused by fires, especially if the trigger was not completed.

Accordingly, the present invention has been drawn in consideration of the above-mentioned problems, the purpose of which is to automate the opening and closing of the pomi to improve the loading efficiency, and at the same time enable the opening and closing can increase the firing speed at high angle (high) fire. The present invention provides a pomi switchgear.

An object of the present invention is a four-mount having a support having an open cam at the rear end; Pomihwan, which is retracted (reversed) and restrained (advanced) in a state constrained with respect to the fore mount at the fore end; A closure unit for opening and closing the rear of the formi ring; A cam follower having a roller interlocking with the open cam and rotatably axially coupled to the fortune ring, and the opening and closing means having an opening and closing means formed of a crank having a rising bar fixed on the shaft to rotate with the cam follower and raising the closing device. An apparatus, comprising: a hydraulic cylinder fixed to an upper portion of a four mount and having a piston rod at a distal end thereof, a rack gear interlocked with a crank gear formed at a circumference of the cam follower, and a piston fixed to the distal end of the rack gear; It can be achieved by having a coupler selectively coupled to the rod to transfer the feed force of the piston rod to the rack gear, and an open cam at the tip of the cam follower to release the opening and closing retainer from the closure in the initial opening and closing. In other words, by opening and closing the pomi by using hydraulic pressure, the loading efficiency can be improved and the closing can be completed by the complete lowering of the closure even at an elevation.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a side view showing the configuration of the present invention in the closed state open state (the same configuration will be described with the same reference numerals as in the prior art) according to the present invention is a support provided with an open cam 13 at the rear end (12) is fixed to the four mount (10), the hydraulic cylinder 50 is fixed to the upper portion of the four mount (10) and the locking groove 54 is formed at the tip of the piston rod 52 of the hydraulic cylinder (50) have. A pomi-ring 20 is provided to retreat (reverse) and return to the seat (rear) in a state constrained with respect to the pomount 10 at the rear end of the pomount 10. Inside the pomi ring 20 is provided with a closing device 30 which is lifted by the opening and closing means fixed to the pomi ring and opens and closes the rear of the pomi ring 20. Connecting grooves 32 are formed in the middle of the closing device 30, and the opening grooves 34 and the closing grooves 36 are formed above and below one side. The opening and closing holder 22 is inserted into any one of the opening groove 34 and the closing groove 36 to maintain the open or closed state of the closing device 30 on the pomi ring 20. The opening and closing means is a cam follower 42 connected to the crank gear 41 rotatably coupled to the forma ring 20, the shaft 24 is fixed on the shaft 24 with the cam follower 42 A rotating crank 44 is provided. One side of the crank 44 is provided with a rising bar 45 that is inserted into the connection groove 32 of the closure 30 to raise the closure 30 when rotating. The center of the cam follower 42 has a roller 43 which interferes with the open cam 13 of the support 12 when the pomi-hwan 20 is returned to the spring follower, the cam follower 42 is due to the interference Will rotate. At the time of retreat of the pomi-ring 20, the roller 43 is pressed on the inclined surface 14 formed on the open cam 13 and is compressed to prevent rotation of the cam follower. And at the end of the cam follower 42 at the initial time of retreat and return, the opening and closing retainer 22 is removed from the open groove 34 and the closed groove 36 to separate the cam (46) to enable the rise of the closing device (46). ) Is formed. On the other hand, the rack gear 60 connected to the crank gear 41 of the cam follower 42 is provided on the top of the formi ring 20 so as to be movable left and right, and the piston rod ( A connector (70) having a locking projection (72) caught by the locking groove (54) of the 52 is coupled to the pin (71). The connector 70 has a rear end is supported by the tension spring 73 on the rack gear 60, so that the locking projection 72 is always held by the locking groove 54. In addition, the front end of the rack gear 60 is provided with a stopper 62 to prevent the connector 70 from descending at a predetermined position anymore. On the lower surface of the connector 70, a rising protrusion 74 having an inclination toward the rear is formed, and a separation jaw interfering with the rising protrusion 74 on the top of the pomi ring 20 to rotate the tip of the connector 70 upward. (26) was configured.

According to the present invention having the configuration as described above, the cam follower 42 returns to the initial position by returning to the forearm movement of the four mount 10 while being restrained in the four mount 10 by gas pressure after shooting. As the roller 43 is caught by the open cam 13 of the support 12 and rides over the open cam 13, the cam follower 42 rotates about the shaft 24. At the same time, the rack gear 60 connected to the crank gear 41 of the cam follower 42 is advanced. At this time, the separation cam 46 of the cam follower 42 in the initial rotation state to remove the opening and closing holder 22 was inserted into the closing groove 36 of the closing device (30). The crank 44, which is connected to the shaft 24, rotates simultaneously with the rotation of the working cam follower 42. The rising bar 45 of the crank 44 freely rotates the connecting groove 32 in the initial rotation state. Done. As the rotation is further advanced, the rising bar 45 is caught on the upper end of the connecting groove 32, so that the closing device 30 protrudes above the pomi ring 20 and rises. When the separation cam 46 is separated from the opening and closing holder 22 before the time point of completing the ascending, and the closing device 30 is completed, the opening and closing holder 22 of the closing device 30 is removed by the spring restoring force. Since the inserter 30 is inserted into the opening groove 34 to fix the closing device 30, the pomi is opened as shown in FIG. 3. Meanwhile, the connector 70 of the rack gear 60 is advanced by the rotation of the cam follower 42. Before the opening is completed, the locking projection 72 interferes with the tip of the piston rod 52 to overcome the force of the spring 73, and rotates around the pin 71 to move forward to the spring at the point of the locking groove 54 By the force of 73 to maintain the state inserted into the locking groove (54). In this state, when lowering the closing machine after loading the shell and the charge, the hydraulic cylinder 50 is operated to push the piston rod 52 to the right in the drawing, and the rack gear 60 connected by the connector 70 retreats. Therefore, the cam follower 42 connected to the crank gear 41 is rotated clockwise. At this time, at the initial rotation of the cam follower 42, the separation cam 46 pulls the open / close holder 22 out of the opening groove 34, and the rising bar 45 completes the detachment of the open / close holder 22. Free rotation in the connecting groove 32 until it becomes. As the piston rod 52 continues to move, the rising bar 45 presses the connecting groove 32 so that the closing device 30 is lowered by the pressing force and the weight of the closing device 30. The closing device 30 is completely lowered by the pressure of the piston rod 52 even if friction with the four mount during the lowering. The separation cam 46 is separated from the opening and closing retainer 22 before the completion of the lowering completion point, and the opening and closing retainer 22 is inserted into the closing groove 36 after the closing of the closing device 30 is completed. On the other hand, the piston rod 52 connected to the connector 70, as shown in FIG. 4, the rising protrusion 74 of the connector 70 is caught by the separating jaw (26) at the completion of the lowering of the closing device (30) pins At the same time as the rotation around the 71 and the locking projection 72 is released from the locking groove 54 is returned to the original position by the back of the hydraulic cylinder (50) again. When firing is carried out in such a state, the rack gear 60 moves forward and is connected to the piston rod 52 again when the seating of the fortune ring is repeated, so that the shooting can be continued by repeating the above-described action.

As described above, the pomi opening and closing device according to the present invention has the effect of improving the loading efficiency by enabling the opening and closing of the closure by using hydraulic pressure, as well as improving the loading efficiency by closing the complete closure of the closure even at an elevation to speed up the firing speed. will be.

Claims (3)

A four mount having a support having an open cam at its rear end; Pomihwan, which is retracted (reversed) and recuperated (advanced) in a state of being restrained with respect to the fore mount after the fore mount; A closure unit for opening and closing the rear of the formi ring; Pami opening and closing with a cam follower having a roller interlocking with the open cam and rotatably coupled to the fortune ring, and a crank having a crank having a rising bar that is fixed on the shaft to rotate with the cam follower and raises the closing device. An apparatus, comprising: a hydraulic cylinder fixed to an upper portion of a four mount and having a piston rod at a distal end thereof, a rack gear interlocked with a crank gear formed at a circumference of the cam follower, and a piston fixed to the distal end of the rack gear; And a coupler selectively coupled to the rod to transfer the feed force of the piston rod to the rack gear, and an open cam at the distal end of the cam follower to release the opening / closing maintenance from the waste disposal system at the beginning and the beginning of the closure. Switchgear. According to claim 1, The engaging groove is formed on the front end of the piston rod, the connector is rotatably pin coupled to the rack gear, the engaging end is formed on the engaging groove at the front end and the rear end of the tension spring on the rack gear The stopper is always held by the locking groove, and a stopper is provided at the front end of the rack gear to prevent the connector from descending at a predetermined position, and a rising protrusion is formed at the bottom of the connector, and an upper portion of the four mount is provided. And the interference opening with the lift projection, characterized in that the fork opening and closing device to configure a separation step for rotating the top of the connector. According to claim 2, wherein the rising projection is formed in the rear inclined to the rear of the connector rises by the separation jaw to retract the locking projections, characterized in that the release projection from the locking groove.