RU2199075C1 - Armored combat vehicle collective protection system - Google Patents

Abstract

FIELD: armored combat vehicles, in particular, devices for their protection against mass destruction weapon. SUBSTANCE: the system is provided with a mechanism of automatic forced vehicle braking. The mentioned mechanism is provided with a solenoid-operated pneumatic valve of compressed air supply from the air system in response to an electric signal from a radiation and chemical detector, booster forming a mechanical force, plug with an eye and lever installed for transmission of force from the booster to the actuating elements of the drive of the stopping brakes. EFFECT: minimized probability of tipping over of the combat vehicle at an action of shock wave on it, as well as prevented collision of combat vehicles during movement in a column at actuation of the collective protection system. 2 dwg

Description

 The invention relates to systems for collective protection of tanks, infantry fighting vehicles, self-propelled artillery installations (i.e., military vehicles) from weapons of mass destruction.

 Closest to the invention is a system of protection against weapons of mass destruction and ensuring the habitability of the combat crew of an infantry fighting vehicle BMP-3. (Technical description BMP-3. Er 688-sb6TO. P. 311 ... 319. Open edition. Prototype).

 The system of protection against weapons of mass destruction and the habitability of combat crew includes (figure 1): sealing nodes 4; actuating mechanisms 5 (engine stopping mechanism 9, closing mechanisms for the valves of the fans for exhausting machine gun gases in autonomous installations 10, the closing mechanism of the valve of the valve box of the air circulation in the cold season 8, shutdown mechanisms for guidance devices 11); filter ventilation unit with air distribution system 6; heaters 7; exhaust fans 12; radiation and chemical reconnaissance device 1; relay box 13.

 When the protection system is operated by the “A” command (in case of an atomic explosion), the “A” signal lamp on the measuring console of the radiation and chemical reconnaissance device 1 lights up, the “PAZ” indicators on the commander’s remote control PP-088 2 and the gunner’s remote control PL-088 3 turn on, sealing units 4 and actuators 5 (the engine stops) 9 will work, the cap drive 14 will turn off, the machine gun fan motors in stand-alone units 12 will turn off.

 The disadvantage of this protection system is the lack of forced braking of the machine during an atomic explosion, as a result of which the body of the combat vehicle can spontaneously perform longitudinal and transverse vibrations, and when the front of the shock wave of a nuclear explosion approaches, it can tip over from the impact of high-speed pressure. In addition, when the collective defense system is activated, collisions of military vehicles during movement in the convoy, rollover and collision with vehicles and people on the sidelines due to engine shutdown and loss of control of the machine are possible.

 The problem solved by the invention is the automatic forced braking of the machine during the operation of the collective protection system by command "A".

 This problem is solved by introducing into the well-known collective protection system of the mechanism of automatic forced braking of the machine 15.

 The system of collective protection of a combat vehicle includes sealing units, actuators, a filter and ventilation unit with an air distribution system, heaters, exhaust fans, a radiation and chemical reconnaissance device and a relay box, an automatic forced braking mechanism of the vehicle, consisting of an electro-pneumatic valve for supplying compressed air from the air system by an electrical signal from a radiation and chemical reconnaissance device, a mechanical force boosting boom, plugs with an eye and p levers transmitting force from the booster to the actuating elements of the brake holding drive.

 The invention is illustrated in figures 1 and 2. Figure 1 shows a diagram of a collective defense system of a combat vehicle. Figure 2 shows the drive of the stopping brakes and the mechanism of automatic forced braking, where the numbers indicate the elements of the distinctive part of the invention: 16 - electro-pneumatic valve; 17 - booster; 18 - fork with an eye; 19 - lever, 20 - tubular shaft of the brake pedal.

 The automatic forced braking mechanism consists of an electro-pneumatic valve 16, a booster 17, a fork with an eye 18 and a lever 19, mounted on a tubular shaft of the brake pedal 20.

 In the initial state, the elements of this mechanism are in the position shown in FIG. 2, and when you press the brake pedal (arrow), the lever 19, mounted on a tubular shaft, moves freely along the eye of the fork 18, allowing normal operation of all the elements of the drive of the stop brakes when the machine is moving.

 The mechanism is as follows. When the protection system is triggered by command “A”, an electrical signal from the radiation and chemical reconnaissance device (voltage of the on-board network +26 V) is supplied to the engine stop mechanism. At the same time, voltage is supplied to the electro-pneumatic valve 16. The electro-pneumatic valve opens, and compressed air from the air system (shown by the dotted arrow) enters the booster 17 under the diaphragm, which transmits pressure to the oil. Oil from the cavity above the diaphragm through a calibrated hole enters the plunger cylinder. Under oil pressure, the plunger moves (in accordance with FIG. 2 to the left) and pushes the fork with the eye 18. The fork transfers force to the lever 19, mounted on the tubular shaft of the brake pedal 20, as a result of which the pressure brakes are applied through the transmission elements of the brake brake actuator disks, compression of friction disks of stop brakes and braking of the machine is provided. The magnitude of the moment developed on the tubular shaft of the pedal of the stop brake 20 is determined by the length of the arm of the lever 19, and the time that the stop brakes are fully engaged is determined by the size of the calibrated hole in the oil channel of the booster and the pressure of compressed air in the main of the air system.

 After a certain time, for example, 3.5-5.0 s, the signal from the radiation and chemical reconnaissance device deenergizes the electric circuit of the engine stop mechanism and the electro-pneumatic valve 16.

 In this case, the electro-pneumatic valve 16 closes the access of compressed air from the line and opens the hole for bleeding air from the cavity under the diaphragm of the booster into the atmosphere.

 Under the action of the springs, all the transmission elements of the stop brake drive, including the tubular shaft of the brake pedal 20 is returned to its original position, and oil from the plunger cylinder through a calibrated hole flows into the cavity above the diaphragm.

 When checking the operation of the protection system, it is necessary to make sure that at the same time the engine is stopped, the brake pedal automatically takes its extreme forward position, and after a while, for example 6 seconds, returns to its original position.

 The design of this device allows for a sharp reduction in the likelihood of a military vehicle overturning when a shock pressure is applied to its hull, as well as eliminating the collision of military vehicles during movement in a convoy when a collective defense system is triggered.

Literature
1. BMP-3 infantry fighting vehicle. Technical description. Er 688-sb6 TO. - 388 p. Open edition. Prototype.

Claims (1)

 The collective protection system of a combat vehicle, including sealing units, actuators, a filter-ventilation unit with an air distribution system, heaters, exhaust fans, a radiation and chemical reconnaissance device, and a relay box, characterized in that a mechanism of automatic forced braking of a vehicle consisting of an electropneumatic compressed air supply valve is introduced air from the air system by an electrical signal from a radiation and chemical reconnaissance device, a booster that forms a mechanical force e, forks with an eye and a lever mounted with the possibility of transferring force from the booster to the actuating elements of the stop brake drive.

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