Chassis of military caterpillar vehicle

FIELD: security facilities, blasting.

SUBSTANCE: invention refers to armoured machinery and can be used in chassis of military caterpillar vehicles equipped with fire protection facilities. The chassis of a military caterpillar vehicle contain a frame, a power unit, a power gear including a fan drive with a friction clutch and a cooling system with a fan, and fire protection equipment with an automatic control unit. The fan is secured on a driving hub made with a friction surface. A pressure plate is designed so as to interact with the friction surface of the driving hub. A driven hub is made as a whole with a body of a bearing and is equipped with a cartridge located in its inner cavity and able to rotate around its axis. A chamber forming container is assembled in the cartridge; and an exploder as a source of pneumatic energy is installed in the said container. At that the container is designed with an orifice hole communicating the inner cavity of the container with the chamber and rigidly connected to the driven hub. A feature of electric blasting of the charge of an explosive substance of the exploder is secured to a flange of the container. The said feature is made as a lock with a core. The core is electrically connected with the said automatic control unit, and the lock is equipped with a spring which presses the core to a detonating cap of the exploder.

EFFECT: improvement of fire extinguishing efficiency in a motor-transmission compartment of chassis of a military caterpillar vehicle with hydro mechanic transmission.

2 dwg

 

The invention relates to the field of armored vehicles and can be used in the chassis of military tracked vehicles with hydromechanical transmission, equipped with fire fighting equipment.

Know the chassis of the T-72A (see the T-72A. Technical description and operating instructions, book 2, part 1. M: Military publishing house, 1989, s-407, RIS-208), selected as a prototype, comprising a housing; a power transmission comprising a drive centrifugal fan with clutch comprising fixed to the body chassis bearing housing and placed in the support bearings leading and driven hubs mounted on the driven hub having a friction surface, with the possibility of axial movement of the adjusting disk that is installed at the leading hub in contact with the pressure disk and the friction surface of the driven hub of the friction disc; a power unit that includes a cooling system with a centrifugal fan mounted on the driven hub; fire-fighting equipment with automation unit, sensors and cylinders fire extinguishing agents.

A disadvantage of the known chassis is that, when using it instead of a mechanical - hydraulic transmission (see, for example, theory and construction of the tank. - V.5. Transmission of military tracked vehicles. M.: Mashinostroenie, 1985, p.27), in the drive center of the foreign fan cooling system for removing hard links it with the engine uses hydraulic coupling, which, at the time of simultaneous emergency stop engine and receipts extinguishing composition from a container of fire fighting equipment in the space of the engine compartment (MTO), produced according to the signal from the sensor to the automation unit of fire fighting equipment in case of fire in the procurement chassis, does not stop the centrifugal fan, which continues to rotate by inertia, while a significant portion of extinguishing composition through the weekend blinds, located in the roof above the MTO chassis vented to the atmosphere, thereby reducing the efficiency of fire fighting equipment.

Task to be solved by the present invention is directed, is the creation of a chassis of military tracked vehicles with more efficient fire extinguishing system in the application of hydro-mechanical transmission.

The problem is solved in that the chassis of military tracked vehicles centrifugal fan mounted on the leading hub made by surface friction leading hub driven hub made zuzelo with bearing housing and equipped located in the internal cavity with the possibility of axial movement of the glass mounted therein with the formation of a chamber of a container, inside of which is placed a source of pneumoniae in the form of the actuator, with the container and is made with a throttling hole, reporting its internal cavity with the camera is rigidly connected to the driven wheel hub, and a flange fixed to the vehicle electrical detonation of the explosive charge of the actuator, in the form of a shutter with a core, the core is electrically connected with the aforementioned automation unit, and a shutter provided with a spring, of which the core is pressed against the primer-detonator explosive loads.

The declared technical features are significant because they affect the technical result achieved.

The study of other technical solutions in the art, the features distinguishing the claimed device, have not been identified. This allows us to conclude that the claimed device is new and not obvious from the current level of technology.

The invention can be applied in the production of military tracked vehicles with hydromechanical transmission, equipped with fire fighting equipment.

The invention is illustrated by drawings, where figure 1 shows a left side view on the chassis of military tracked vehicles; figure 2 shows a section a-a figure 1.

Chassis military tracked vehicle includes a housing 1, fire-fighting equipment, including cylinders with 2 fire extinguishing agents and unit 3 automatic, electrically connected with the sensors 4, the power transmission 5, including the drive 6 C is strobing fan 7, mounted on top of the hub 8, is made with the surface friction B. Pressure disc 9 with threaded rod 10 is mounted for engagement with the friction surface of the leading hub driven hub 11 is made zuzelo with bearing housing and equipped located in the internal cavity with the possibility of axial movement of the Cup 12 with mounted therein forming a chamber In the container 13, within which is placed a source of pneumoniae in the form of the actuator 14, and the container is made with a throttling hole d, indicating its internal cavity G with the camera, and is rigidly connected to the driven wheel hub 11, and a flange fixed tool electric blasting explosive charge of the actuator 14 made in the form of a bolt 15 core 16, is electrically connected with the unit 3 automatic fire-fighting equipment, the shutter 15 is equipped with a spring 17, which is the core 16 is pressed against the primer-detonator 18 of the actuator 14, forming a normally closed contact. Above power transmission 5 has a rack 19 with the cooling system radiators. For the discharge of heated air from the chassis 1 chassis into the atmosphere in the roof above the MTO has weekend louvers 20.

Work is carried out as follows.

During operation of power transmission 5, the actuator 6 is transmitted to the rotation of the centrifugal ventilate the ru 7, which is intended for the education of cooling air flow through the rack 19 with radiators, cooling systems and exhaust the heated air through the weekend louvers 20 to the atmosphere. Centrifugal fan 7 bolted to the leading hub 8, which is installed in the support bearings on the driven hub 11. In case of fire in the power pack temperature sensors 4 produces a signal in block 3 of automation, triggers the stopping of the engine, and the engine stops, fire cylinders 2 fire fighting equipment, filling extinguishing composition space logistics. Simultaneously, the signal from the unit 3 through automation is pressed by a spring 17 located in the shutter 15, the core 16 is transmitted to the blasting cap 18, and then through the sleeve of the actuator 14, the container 13 on the housing 1 of the chassis, forming a closed electrical circuit. The blasting cap 18 initiates the explosive of the actuator 14 and the actuator is triggered. At the time of the order of 10-6since you are allocating considerable energy, which can lead to destruction of the structure. To avoid this, the container 13 has an internal cavity G, in which the energy of the powder gases flowing out of the actuator, is accumulated. The value of the volume to be pressurized 255 MPa. After passing through the throttling holes d, the gas pressure in the chamber is reduced to the required working what about the pressure of 20-30 MPa, when the Cup 12 is moved in the axial direction and through the studs 10 presses the pressure plate 9 to the friction surface B leading hub 8 with a force that provides the necessary friction torque. Under the action of the friction torque leading hub 8 with fixed thereto a centrifugal blower 7 is stopped.

Thus, the proposed improvement provides an emergency stop of the fan during the fire in the procurement chassis military tracked vehicles, prevents the release of fire extinguishing composition in the atmosphere, thereby increasing the effectiveness of fire fighting.

1. Chassis military tracked vehicles, comprising a housing, a power transmission including a fan drive with a clutch, comprising fixed to the body chassis bearing housing and placed in the support bearings leading and driven hubs mounted on the driven hub having a friction surface, with the possibility of axial movement of the adjusting disk that is installed at the leading hub in contact with the pressure disk and the friction surface of the driven hub of the friction disc; a power unit that includes a cooling system with a fan mounted on the driven hub, fire-fighting equipment with automation unit, wherein the fan Assembly is attached at the leading hub, made with the surface of the friction the clutch disc is installed with the possibility of interaction with the surface friction leading hub driven hub made zuzelo with bearing housing and equipped located in the internal cavity with the possibility of axial movement of the glass mounted therein with the formation of a chamber of a container, inside of which is placed a source of pneumoniae in the form of the actuator, while the container is made with a throttling hole, indicating its internal cavity with the camera is rigidly connected to the driven wheel hub, and a flange fixed to the vehicle electrical detonation of the explosive charge of the actuator.

2. Chassis military tracked vehicle according to claim 1, characterized in that the means of electrical detonation of the explosive charge of the actuator is made in the form of a slide core, and the core is electrically connected with the aforementioned automation unit, and a shutter provided with a spring, of which the core is pressed against the primer-detonator explosive loads.



 

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