JPH0633987B2 - Equipment for disposal of buried explosives - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a device for treating buried explosives such as land mines, and more specifically, a rear end of a system of a series of ropes including an explosive rope is anchored to the surface of the earth, A rocket is towed to extend the system and lay it on the minefield, and the tension of the system associated with the extension is transmitted to a drawstring to activate the fuze to detonate the explosive line and explode or blow away the buried explosives. The present invention relates to an apparatus adapted to be processed.

[Prior art]

As this kind of blasting device, there is the one disclosed in Japanese Patent Publication No. 48-35320, which will be described with reference to FIGS. 3 to 5.

In the drawings, reference numeral 1 denotes an explosive cable, which is formed into a desired length by firmly connecting a plurality of elongate bags 1a, 1a, ... Loaded with explosives by using connecting tubes 2, 2 ,. The rear end is sealed by the front end sealing plug 3 and the rear end sealing plug 4, respectively. Reference numeral 10 (FIGS. 4 and 5) shows a fuze installed in the front end sealing plug 3, and in order from the rear side, a medicine barrel 12 loaded with a point explosive 11 for exploding the explosive, and a delay agent 13. Holding tube 14 for holding, detonator 15 holding cylinder 16, sleeve 17 and 18
Are arranged and combined. Reference numeral 19 is a hammer which is loosely fitted in the sleeve 17, 20 is a hammer which faces the detonator 15 from this hammer, 21 is a trigger which is engaged with the hammer 19 and claws 22, and in this state, the hammer 19 is moved by the trigger head 21a. The movement in the direction of the detonator 15 is restrained, and at the same time, the spring 23 is biased in the same direction. 24 is the trigger head
It is a drawstring connected to 21a and pulled out of the front end sealing plug 3.

In this fuze 3, when the drawstring 24 is pulled, the engaging portion 22 is sleeved.
When the restraint 17 is released from the outside and the restraint is released, the struck hammer 19 urges toward the detonator 15 and strikes the detonator with a firing pin 20. Thereafter, the point explosive 11 is ignited after the elapse of a predetermined time set in the delay agent 13, which is the same as in a normal delay type fuze.

Reference numeral 31 is a steel cord connected to the front end sealing plug 3 of the explosive cable 1 with a proper slack 31a near the plug 3 and a drawstring 24 of the fuze 10.
Is connected (32) to the steel rope. 33 is a strong mooring rope such as a nylon rope connected to the rear end sealing plug 4 of the explosive cable 1, 34
Is a braking cable such as a rubber cable connected to the mooring cable 33, and 35 is a braking cable 34.
The eye formed on the rear terminal of the
For example, a series of systems such as 34 are folded back many times as shown in the drawing, and compactly stored. At the time of use, the eye 35 is used to anchor the system to the surface of the earth, structures, vehicles, etc., and at the same time, the tip of the steel rope 31 is connected to the rocket 36 to launch the rocket in a desired direction.

That is, when the rocket 36 is launched, the rope 24 is pulled by the inertial force due to its acceleration, and the detonator 15 is triggered as described above, and the series of rope systems are towed by the rocket and extended, and when this is fully extended. Since the braking rope 34 made of rubber rope or the like applies a gentle braking force, the rocket 36 lands and the bomb rope 1 is laid on the destination ground. After the elapse of the predetermined time set in the delay pipe 14, the explosive cable 1 is detonated and the buried explosive is treated.

〔problem〕

By the way, in such a conventional blasting device, as described above, since the fuze 10 starts operating immediately after the launch of the rocket 36, if a malfunction occurs in this rocket and the rope system is not fully expanded. If there is something like landing on
Explosion 1 is expected to explode here while remaining at the anchoring point.

Therefore, the danger can be avoided by moving the mounting part of the fuze 10 to the rear end of the explosive cable 1. Based on this idea, the inventors of the present application installed the fuze 10 in the rear end sealing plug 4 and connected the drawstring 24 to the cord 33 following the above-mentioned conventional mode to perform a practical test. Five out of the four failed because the fuze did not work. And it was concluded that the cause was that the direction of the inertial force acting on the fuze was opposite. That is, as shown in FIG. 5, when the fuze 10 is installed in the front end sealing plug 3, this fuze is accelerated to the left in the drawing, while when the fuze 10 is installed in the rear end sealing plug 4, Inevitably the direction will be reversed, so it will be accelerated to the right. Therefore, the hammer iron 19 and the firing pin 20 generate an inertial force relatively to the left, which reduces the biasing force of the spring 23, weakens the striking force of the detonator 15, and lowers the reliability of firing.

[Problems of the Invention]

In view of the above-mentioned problems, an object of the present invention is to activate a detonator when a system of a series of ropes including an explosive rope is sufficiently expanded,
Moreover, the operation of the blasting device is ensured to ensure the safety and reliability of the blasting device.

〔Constitution〕

In order to achieve this object, the present invention includes a detonator that activates a fuze by pulling a drawstring to detonate, and anchors the trailing end of a series of rope systems to the ground surface or the like and causes the rocket to toe the tip. In the device for laying on the ground while expanding this system, transmitting the tension of the system associated with the expansion to the drawstring, and activating the fuze to detonate the explosive line to treat the buried explosive, A fuze is installed at the rear end of the last explosive cable, the rearmost explosive cable is folded back, the front end and the rear end of the last explosive cable are brought close to each other, and the end of the drawstring is folded back. It is connected to the tip of the bomb.

According to the above configuration, while the explosive line is being towed by the rocket,
When the fuze provided on the folded back bomb at the rearmost end is extended to the connecting part of the drawstring, it pulls the drawstring for the first time to fire the fuze, so even if the rocket landed before that. However, the fuze will not be triggered and the explosive line will not be spot-fired. In addition, at the moment of launching the rocket, the rear part of the drawstring connecting part, that is, the fuze mounting part has not yet started to move, so that the detonating part of the fuze is not affected by the inertial force caused by the rocket flight, and therefore, The spring biasing force of the hammer 19 and the firing pin 20 is not diminished, and at the time of firing, the fuze can be reliably operated while maintaining the desired reliability.

〔Example〕

 1 and 2 show an embodiment of the present invention.

In a structure similar to the conventional one in which the tip of the series of ropes including the steel rope 31, the explosive rope 1, the mooring rope 33, the braking rope 34, etc. is connected to the rocket 36 and the eye 35 is formed at the rear end, 10 is an explosion. It is a fuze installed in the rear end sealing plug 4 of the rope. The structure of the fuze 10 and the state of attachment to the stopper are the same as those in FIG. 5, and
The drawstring 24 is pulled out of the plug through a hole 4a formed in the side surface of the rear end sealing plug 4. In addition, the bag 1a at the rearmost portion connected to the rear end sealing plug 4 is folded back once and the connecting cylinder 2a is arranged near the stopper 4, and this state is held by the easily destructible band 37, and then the end of the drawstring 24 is attached. The connecting cylinder 2a using the hook 38 and the ring 39
Have been laid up.

The embodiment is as described above. When the expansion operation of the explosive cable 1 reaches the end of the connecting cylinder 2a, the drawstring 24 is pulled and the detonator 15 is triggered, and this firing is performed in a substantially stationary state. Be done. Then, as the spreading operation further spreads backward, the hook 38 is stretched and the drawstring 24 is disengaged, and the easily destructible band 37 is broken, so that the entire system is stretched as described above and then dropped and laid. The explosive cable 1 is detonated when the predetermined time has elapsed.

In the above process, when the rocket 36 lands early, the drawstring 24 is not pulled, so the explosive cable 1 does not fire, and even if the rocket landed after firing the detonator 15 at this time, Since most of the system is in flight and has sufficient inertia, the rest of the system is pulled and extended forward by this. Therefore, the explosive cable 1 can be detonated away from the mooring point, and the danger can be avoided.

As a result of carrying out a practical test on this example, the number of samples tested was 13
All the outbreaks were able to operate as expected.

[Brief description of drawings]

FIG. 1 is an overall explanatory view showing an embodiment of the present invention, FIG. 2 is an enlarged view of a main part of FIG. 1, FIG. 3 is an overall explanatory view showing an example of a conventional device, and FIG. FIG. 5 is an enlarged view of the main part of the drawing, and FIG.
FIG. 5 is a sectional view taken along line VV of the figure. 1 ... Explosion cable, 3 ... Explosion cable front end sealing plug 4 ... Explosion cable rear end sealing plug, 10 ... Fuze 24 ... Pull string, 31 ... Steel cable 33 ... Mooring cable, 34 ... Braking cable 35 ... Attaching eye, 36 ... Rocket

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masao Yatagai 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (56) References Japanese Patent Publication No. 48-35320 (JP, B1) US Patent 3538852 (US, US, 3538852) A)

Claims (1)

[Claims] Claims: 1. While pulling a drawstring, the rear end of a series of ropes including an explosive rope that activates a fuze to initiate detonation is anchored to the surface of the earth, and the tip is towed by a rocket to expand this system. A device for laying on the ground and for transmitting the tension of the system associated with the extension to the drawstring to actuate the fuze to detonate the explosive line and treat the buried explosive, wherein the fuze is the rearmost explosive line. The rear end of the bomb, the rear end of the bomb is folded back to bring the front end and the rear end of the bomb at the end close to each other, and the end of the drawstring is connected to the front end of the folded bomb. A device for processing buried explosives, characterized by: