RU203366U1 - REMOTE BLOW FUSION FOR HAND-HELD GARNETS - Google Patents

Abstract

The utility model relates to ammunition, namely to fuses for hand-held fragmentation grenades. In the anti-submarine and sabotage defense system of the water area of ports, as well as individual objects, hand fragmentation grenades such as RGD-5 and F-1, RGO are widely used to combat underwater saboteurs and RGN. Underwater saboteurs currently use closed-loop breathing apparatus, which provide combat swimmers with covert movement under water at a depth of 45-50 m, and contribute to the implementation of various diving activities associated with sabotage at important facilities. For a reliable defeat of underwater saboteurs, it is necessary that the grenade detonation occurs at different depths (up to 50 m). The detonation time of a combat grenade depends on the retarder, which is part of the unified fuse and is 3.2 ... 4.0 seconds. During this time, the throwing grenade must have time to throw it at the maximum range, so the grenade explodes at a shallow depth, near the surface of the water, without having time to sink to the depth of the underwater saboteur. Therefore, it is necessary to have a fuse for hand grenades with a remote device that allows you to set the firing time of the grenade, and, accordingly, the depth of operation. The fuse for remote firing for hand grenades contains a body closed from above with a head and mounting sleeve, inside which a remote device and a primer igniter are located. A fuse placed inside the grenade cavity is attached to the body on the thread. To ensure a certain depth of operation, the remote device contains a clock mechanism, an installation, fixing and actuating device. The utility model is aimed at improving the operational characteristics of a remote fuse for hand grenades.

Description

The utility model relates to ammunition, in particular to fuses for hand grenades, and can be used to equip defensive and offensive hand fragmentation grenades.

In the system of anti-submarine sabotage defense of the water area of ports, as well as individual objects, defensive and offensive hand fragmentation grenades such as RGD-5 and F-1, RGO and RGN are widely used to combat underwater saboteurs.

Underwater saboteurs currently use closed-loop breathing apparatus, which provide combat swimmers with covert movement under water at a depth of 45-50 meters, and contribute to the implementation of various diving activities associated with sabotage at important objects. For a reliable defeat of underwater saboteurs, it is necessary that a grenade detonates at different depths (up to 50 meters). The detonation time of a combat grenade depends on the retarder, which is part of the unified fuse and is 3.2 ... 4.0 seconds. During this time, the throwing grenade must have time to throw it at the maximum range, so the grenade explodes at a shallow depth, near the surface of the water, without having time to sink to the depth of the underwater saboteur. Therefore, it is necessary to have a fuse for hand grenades with a remote device that allows you to set the grenade firing time, and accordingly the firing depth.

Known fuse for hand grenades - a unified fuse for a hand grenade modernized - UZRGM, designed to detonate a bursting charge of RGD-5 and F-1 grenades, containing a puncture-safety mechanism, a primer-igniter, a retarder sleeve, a retarder and a detonator cap [1].

The disadvantage of this device is the impossibility of introducing an additional device into the fuse, which provides the ability to change the fuse response time, which improves the operational capabilities of the remote fuse for hand grenades.

Known fuse for hand grenades - shock-distance fuse, designed to detonate the explosive charge of the RGO and RGN grenades, containing a knock-safety mechanism, a long-range cocking mechanism, a target sensor, a self-destruct mechanism and a detonator cap [1].

The disadvantage of this device, on the one hand, is the presence of a target sensor in the fuse, which ensures that the fuse is triggered when interacting with the surface, on the other hand, there is no remote device that would allow adjusting the response time of the detonator cap.

To some extent, the noted drawbacks are eliminated in the design of a fuse for hand grenades [2], which contains a detonation unit sleeve attached to the inside of the grenade body, which is connected to the cavity of the outer fuse body, in which an additional functional unit of the remote fuse is located, which has a pyrotechnic retarder and a primer-igniter , which is located in the side socket of the fuse body with the possibility of initiating this igniter by means of a trigger knock-on safety mechanism, which is located in the fuse body socket asymmetrically relative to the longitudinal axis of the detonation fuse assembly bushing. The time regulator for the detonation of a hand grenade contains a figured retarder frame rotating along the longitudinal axis of the sleeve of the detonation unit. The frame is made with the possibility of transmitting an initiating fire impulse from the side igniter cap to any section of the lateral outer surface of the rotating horizontal semi-circular component, which has a corresponding profile for placing the pyrotechnic composition of the moderator on it and is connected to the radial component, which is located along the radius of the horizontal semi-circular component with the possibility of further transmission of the initiating fire impulse to the detonation fuse assembly, which initiates the main charge of the hand grenade. There is also a mechanism for installing and fixing the figured frame of the retarder at a given angle of its rotation with the possibility of determining the angle of installation of the rotating figured frame of the retarder relative to the lateral primer-igniter using a digital graduated scale of the remote fuse with an increased time range.

The proposed design of the fuse for hand grenades increases the operational characteristics of the remote fuse for hand grenades.

The disadvantage of this design is the presence of a pyrotechnic composition in the design of the moderator, which during long storage or improper operation of the fuse can lead to its destruction.

To accomplish the tasks of self-defense of ships from underwater saboteurs, grenades are used, which are used both according to these target designations and for performing preventive grenade throwing.

To hit combat swimmers underwater with an acoustic wave, it is necessary that the grenades explode at a predetermined depth - from 10 to 50 m. For this, it is necessary that the fuse design has a remote device.

The detonator for remote blasting of a grenade contains a fuse, which includes a primer-igniter 11, a retarder sleeve 12, a retarder 13 and a detonator cap 14, connected by means of a thread to the fuse body of hand grenades, closed on top by a head and mounting sleeve, inside which a remote device and primer-igniter.

The objective of this utility model is to increase the effectiveness of hand grenades through the use of a remote detonation fuse. This is achieved due to the fact that the design of the fuse for remote detonation of hand grenades includes a remote device, which consists of a clock mechanism, setting, fixing and actuating devices.

FIG. 1 shows a fuse for remote detonation of hand grenades.

FIG. 2 - a key for setting the fuse response time.

The watch mechanism consists of an engine, a wheel gear and a travel regulator, assembled between strips 2, 17, 19, which are fastened with three screws.

The motor consists of a mainspring 5, a drum 4, a central axis 22, a latch 35, a latch axis 34 and a spring 33. The mainspring is located in the drum in a running state and is attached with the inner end to the central axis, and the outer end to the drum. The drum has a toothed rim that serves to wind the spring. The rotation of the drum is prevented by the latch 35 with a spring, and the rotation of the central axis before the throw is by the arrow 36, the wheel drive consists of a central wheel 21, gears 7, 8 and three tribes 6, 9, 10.

The travel regulator consists of a running wheel 18, a balance 16 with weights. In the middle part of the balance there are pallets, which are located in the slots of the strip 17 and the slider. When adjusting the operation of the clockwork with a screw, the slider moves along the groove in the bar, due to which the working length of the hair changes, and, consequently, the period of oscillation of the balance. The balance axis is fixed in the bar with a foot 15 and two screws.

The setting device consists of a head bushing 26, a mounting bushing 27, a connecting ring 28, a mounting plate 3 and a boom 36.

The head bush is screwed into the locating bush and secured with a set screw. On the head bushing 26, digital stamps from 10 to 450 are stamped, and on the setting bushing 27 there is a scale with divisions. It has a locating groove on the head bushing. On the connecting ring there is a stamp-index. The dowel bar has a shaped cutout and is rigidly fixed in the dowel sleeve. When the head bushing rotates, the figured cutout rotates relative to the boom at a certain angle, which determines the duration of the fuse.

The corrugated spring ring 31 provides a certain compression of the parts of the setting device, thereby excluding their spontaneous rotation in service handling. When assembling the fuse, the connecting ring is locked in the housing with three locking screws.

The fixing device consists of a fixing ring 30 and two knives 29.

In service operation, the retaining ring with knives located in the inclined groove of the clockwork slats is held in the upper position by two stoppers 37 with springs 38 placed in the sockets of the middle bar.

The actuating device consists of a striker 1, which is under the pressure of a compressed spring 23 and is kept from moving to the primer-igniter 20 by two balls 25 placed in the holes of the central axis. The spring rests against the central axis through the washer. The balls are kept from falling out by the ring of the boom 36, which in turn is under the pressure of the compressed spring and abuts against the safety bracket 32.

Fuse remote detonation for hand grenades operates as follows.

Before throwing a grenade, it is necessary to set the fuse response time by turning the fuse head sleeve with a special key (Fig. 2) by the appropriate number of divisions in the following order:

- put the key on the fuse so that the key tooth enters the mounting groove on the fuse head sleeve;

- turning the key by the handle, align the required scale division on the mounting sleeve with the pointer on the connecting ring.

When setting the fuse actuation time, its head bushing and a mounting plate with a figured cut are rotated by an appropriate angle relative to the boom.

For throwing, the grenade is taken in the hand so that the trigger lever 40 is pressed with fingers to the body of the grenade. Continuing to firmly press the trigger lever, the ends of the safety pin 41 are straightened with the free hand, which is pulled out of the fuse with a finger by the ring. At the moment of throwing the grenade, the trigger lever is separated and releases the stop 39, which holds the striker of the actuator 1.

During the flight of the grenade, the retaining ring with knives, overcoming the resistance of the spring-loaded stoppers, sinks down under the action of the inertial force. In this case, the knives cut into the mounting sleeve and reliably fix the fuse installation made. At the same time, boom 36 is released. However, the operation of the clockwork is impeded by the axial inertial force acting on the balance weights.

After that, the clockwork begins to work, and the boom 36, under the action of the mainspring 5, rotates together with the neutral axis. The rotation continues until the boom is aligned with the shaped cutout in the mounting plate 3 and, under the action of the spring 24, is pushed through it into the head sleeve. At this moment, the ring of the boom 35 releases the balls 25, which roll out and enable the remote striker with a sting 1 under the action of the spring 23 to prick the primer-igniter 20. The beam of fire from the primer-igniter 20 is transmitted to the primer-igniter 11. Detonation from the detonated primer-igniter 11 transmitted through the retarder 13 and the detonator 14 to the explosive charge of the grenade 42.

The proposed design of a remote detonation fuse for hand grenades can be used to equip both offensive and defensive grenades. At the same time, the increased operational characteristics of the remote fuse, namely the ability to adjust the time of detonation of a combat grenade in a wide range, provide the declared device with advantages over the known detonation devices currently in service. In addition, the parts, elements and devices included in the fuse design can be borrowed from the V-90 remote fuse already mastered by Russian enterprises [3], to high-explosive fragmentation artillery shells, which will reduce the cost of this product.

List of sources used:

1. Manual on shooting. Hand grenades. - M .: Military publishing house, 1987, - 76 p.

2. Fuse for hand grenades: RF patent / Glukhov A.V. RU No. 225301 C2, 2004. - 10 p.

3. Physical foundations of the device of missile and artillery weapons. Ammunition: textbook. for universities, at 4 o'clock. Part III. Fuses and explosive devices of cannon, rocket artillery, ATGM and PG ammunition / A.A. Plyushch, I.I. Grachev, P.N. Deryabin, Yu.B. Shpagin, N.N. Yuzbashev; under total. ed. A.A. Ivy. - Penza: PAII, 2015, - 233 p.

Claims (1)

A remote detonation fuse for hand grenades, consisting of a fuse screwed into the thread inside the grenade body, containing a primer-igniter, a retarder sleeve, a retarder and a detonator cap, connected to the fuse body of hand grenades, closed on top by a head and mounting bushings, characterized in that a remote device is located inside the body, which consists of a clock mechanism, an adjusting, fixing and actuating device that allows you to adjust the detonation time of hand grenades.

Images