RU215256U1 - bridgelayer - Google Patents

Abstract

The utility model relates to the field of crossing and bridge facilities, namely, to mechanical means of protecting the frontal and aft parts of the bridgelayer hull from the impact of cumulative ammunition. The essence of the utility model lies in the fact that the front screen of the bridge layer, containing a mesh anti-cumulative screen, is installed on the front support of the bridge layer with the possibility of its transfer from a vertical position to a horizontal one, together with lowering the front support by means of a cable-and-block system with a spring mechanism, while the mesh screen is made of fine-link wire mesh with cells and is placed on the front support at a distance from the bow of the bridgelayer, providing dispersion of the cumulative jet. The technical result of the proposed utility model is the simplification of operation while maintaining the survivability of the bridge layer at the most critical moment of its approach to the barrier and the initial period of the bridge building. 5 z.p. f-ly, 7 ill.

Description

The invention relates to the field of crossing and bridge means, namely to mechanical means of protecting the frontal and aft parts of the bridgelayer hull from the impact of cumulative ammunition.

To increase the protection of the frontal, side and rear parts of the hull of military tracked vehicles from the effects of cumulative anti-tank ammunition, passive protection elements are used that prevent or reduce the destructive effect of a cumulative jet.

Thus, an anti-cumulative screen of a military tracked vehicle (tank, infantry fighting vehicle) is known, which includes a barrier for anti-tank cumulative ammunition located in front of the main armor protected by it and fixed to the tank hull. This screen is made in the form of an optically transparent single-layer or multi-layer mesh, or lattice screen, or mesh-lattice screen, fixed to a horizontal beam at a distance of up to 2-3 m from the main armor protected by it, i.e. frontal, side, aft parts of the hull and turret (RU, invention according to patent No. 2125224, F41H 7/02, 1999).

The disadvantages of the known anti-cumulative screen are: the complexity of the design, significant weight and cost, the impossibility of using to protect the frontal part of armored vehicles that do not have a gun, the unforeseen mechanized deployment (laying) of the screen.

It is known to use a frontal screen on the bridgelayer, which is fixed at the front end of the bridge block and contains a mesh-lattice anti-cumulative screen. The specified front screen of the bridge layer is made in the form of a mesh web wound into a roll, with its outer end fixed to the carrier rod, which is mounted on the bridge block by means of rear pins and single lugs placed in its rear paired lugs, equipped with a remotely controlled by command from the control department of the actuator , providing self-deployment under the influence of gravity of the mesh fabric and a loading rod fixed on its inner end (RU, invention according to patent No. 2648651, F41H 7/00, 2016).

This technical solution in its functional purpose and in its technical essence is the closest to the claimed one and is taken as a prototype.

However, the manufacture of the front screen of the bridge layer in this way is very expensive, and the design is rather complicated due to the use of an additional actuator and unreliable, because if the control actuators are damaged, the screen will not unroll itself. In addition, when building a bridge, the screen can be damaged, clinging to vegetation and coastal stones.

The technical result of the proposed utility model is the simplification of operation while maintaining the survivability of the bridge layer at the most critical moment of its approach to the barrier and the initial period of the bridge building.

The technical result is achieved by the fact that in the bridge layer, containing a mesh anti-cumulative screen, according to the utility model, the screen is installed on the front support of the bridge layer with the possibility of moving it from a vertical position to a horizontal one together with lowering the front support by means of a cable-and-block system with a spring mechanism, while the mesh screen is made from a fine mesh wire mesh with cells and is located on the front support at a distance from the bow of the bridgelayer, which ensures the dispersion of the cumulative jet.

In this case, the front screen is placed on the front support at a distance of more than 1.5 m from the nose of the bridge layer body.

In this case, the front screen is made of steel mesh.

The front screen is made of aluminum mesh.

At the same time, the mesh cells of the front screen are made with a size of 20 to 30 mm from wire with a thickness of 2 to 3 mm.

At the same time, outside the combat situation, the screen is laid on the front support in the form of a wound roll and fixed on the front support with clamping tapes.

The analysis of the distinguishing features showed the following:

- installation of a mechanized screen on the front support of the bridgelayer with the possibility of transferring it from a vertical (combat) position to a horizontal one together with the front support using a cable-and-block system with a spring mechanism simplifies the control of the position of the protective screen by combining two functions and eliminates the installation of an actuator for folding the screen and the installation of a remote control screen control in the bridgelayer control department;

- the implementation of a mechanized mesh screen made of fine-grained steel mesh with a cell size of 20 to 30 mm from a wire with a thickness of 2 to 3 mm provides a guaranteed undermining of a cumulative means of destruction, for example, an anti-tank grenade;

- installation of a screen on the front support at a distance of more than 1.5 m from the bow of the bridgelayer body provides the necessary dispersion (destruction) of the cumulative jet, which ensures an increase in the survivability of the bridgelayer and its mechanisms from damage by cumulative weapons;

- the implementation of a mechanized screen made of aluminum mesh allows to reduce the weight of the structure;

- laying the mechanized screen outside the combat situation on the front support in the form of a rolled roll reduces the likelihood of damage when operating outside the combat situation.

The essence of the utility model is illustrated by drawings, where:

- in Fig. 1 - view of the nose of the bridgelayer and the front support with a protective screen installed in the combat position;

- in Fig. 2 - view of the left side of the bridge layer and the front support with a protective screen installed in the combat position;

- in Fig. 3 - view of the left side of the bridge layer and the front support with a protective screen installed in a horizontal position when the bridge structure is being guided;

- in Fig. 4 - fastening the cable with a carabiner to the bracket of the upper tube of the screen;

- in Fig. 5 - view of the cable block mechanism with a pressure roller;

- in Fig. 6 - fastening of the cable with the help of a spring to the bracket of the bottom tube of the screen;

- in Fig. 7 - view of the rolled-up protective screen outside the combat situation.

The increase in the survivability of the bridgelayer is ensured by the use of a mechanized protective screen that provides anti-cumulative protection against frontal damage to the hull and mechanisms of the bridgelayer, made of fine-linked steel mesh with a cell size of 20 to 30 mm from wire 2 to 3 mm thick, while ensuring a distance from the bow of the machine body over 1.5 m.

Bridgelayer 1 (see Fig. 1-7) contains a screen 2 mounted on the front support 3 using brackets 10, 11, 12, 13. In the brackets 11, the screen is fixed with a bolted connection 14 to prevent falling out of the brackets 10, 11, 12 and 13. Moving the screen 2 from the combat position (vertical) to the horizontal occurs when the front support 3 of the bridge layer 1 is lowered, which is carried out by means of a cable block system 4 with a spring mechanism 5. The cable 6, which moves along the guide roller 7, is fixed by the pressure roller 8. On At the upper end of the cable, a carabiner 15 is installed, which snaps onto the protective screen 2 by the connecting bracket 16. At the lower end of the cable 6, a tension spring 5 is installed, which engages with the connecting bracket 16, which provides tension and prevents sagging of the cable 6 when the bridge layer 1 moves.

Cotter pins 17 installed at both ends of the lower tube of the protective screen 2 are designed to lock the movable rings 18.

In the stowed position, the protective screen 2, made in the form of a wound roll, is transported on the front support 3 and fastened with tape 9.

In a combat situation, the protective screen 2 is installed on the front support 3 by the crew and is brought into combat position.

Lowering and raising the mechanized protective screen of the bridge layer when lowering and raising the front support from a vertical position to a horizontal one occurs as follows. When lowering from a vertical to a horizontal position, the front support 3 pulls the upper end of the cable 6, which is fixed with a carabiner 15 to the bracket 16, and the cable 6 begins to move along the guide roller 7 in the direction of movement of the front support. At this moment, the lower end of the cable, moving behind the upper one, pulls the lower end of the protective screen to the front support. The tension spring ensures that the protective screen is parallel to the front support at the lowest point and prevents the protective screen from sagging due to its extension.

Claims (6)

1. A bridgelayer containing a mesh anti-cumulative screen, characterized in that the screen is mounted on the front support of the bridgelayer with the possibility of its transfer from a vertical position to a horizontal one, together with lowering the front support by means of a cable-block system with a spring mechanism, while the mesh screen is made of fine wire mesh with cells and placed on the front support at a distance from the bow of the bridgelayer, providing dispersion of the cumulative jet. 2. Bridgelayer according to claim 1, characterized in that the screen is placed on the front support at a distance of more than 1.5 m from the bow of the bridgelayer body. 3. Bridgelayer according to claim 1, characterized in that the screen is made of steel mesh. 4. Bridgelayer according to claim 1, characterized in that the screen is made of aluminum mesh. 5. Bridgelayer according to claim 1, characterized in that the grid cells are made with a size of 20 to 30 mm from wire with a thickness of 2 to 3 mm. 6. Bridgelayer according to claim. 1, characterized in that outside the combat situation, the screen is laid on the front support in the form of a wound roll and fixed on the front support with clamping tapes.

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