RU2406963C1 - Armoured maintenance-recovery vehicle - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: invention refers to armoured maintenance-recovery vehicles (MRV) made by using tank chassis with gas-turbine engine (GTE), namely T-80 tank chassis. Maintenance vehicle includes maintenance-recovery equipment, GTE, welding network with feed circuits and control circuits, GTE start-up system including starter, power supply system of consumers of chassis or welding equipment at non-operating GTE, including auxiliary gas-turbine unit (GTU), and electrical circuits connecting electric power sources and consumers. As independent power supply of welding equipment at operating GTE there used is its starter. In welding network there formed are additional feed and control circuits connected to GTE starter. In order to provide the possibility of switching welding equipment to GTE starter at operating GTE or to GTU at non-operating GTE in power and control circuit there installed is switching unit and power contactors.

EFFECT: improving operating characteristics of the vehicle.

5 cl, 4 dwg

Description

The invention relates to military engineering equipment, namely to armored repair and recovery vehicles (BREM), made on the chassis of the tank with a gas turbine engine (GTE), in particular the chassis of the tank of the T-80 family.

Modern tank ARVs are created, as a rule, on the base chassis of those tanks for the maintenance of which they are intended, which reduces operating costs and increases maintainability. At the same time, to equip the repair and evacuation equipment and the functions performed by this equipment, the AREM functions must correspond to mobile repair shops that carry out quick repairs of damaged weapons and equipment at the place of its failure, and, if necessary, their evacuation. When carrying out repairs and evacuations of armored vehicles and equipment carried out in the field, as well as in the area of hostilities, a large amount of work is made up of electric welding and electric arc cutting, for example, repairing damage to armor, repairing mudguards and wing flaps, and preparing machines for evacuation ( cutting of tracks, driving wheels, balancers), in connection with which modern tank ARVs should be equipped with compact and mobile electric welding equipment.

Known BREM-1 (Technical Description 608. TO-2E. "Armored Repair and Evacuation Vehicle BREM-1", p.121-123), which is made on the basis of the T-72 tank and contains an armored hull, electrical equipment, repair and recovery equipment including the main traction winch, auxiliary winch, towing devices, a crane with a remote boom. The electrical equipment for repair and evacuation equipment is powered by a regular starter-generator of a diesel engine of the chassis operating in the generator mode. Repair and evacuation equipment also includes a welding unit for manual electric arc welding and metal cutting in the field. The operation of the welding installation is possible only with installed batteries and a running chassis engine. To supply power to the welding installation, the generator operating mode of the starter-generator is transferred to the welding mode by switching the relay unit ESA-1. The welding installation kit includes: a block of electric welding equipment with an ESA-1 relay block - for switching the starter-generator into welding mode, located on a panel fixed to the wall of the battery rack (battery), a welding socket installed in the rack on the left fenestrated shelf; a welding network and a set of accessories and a welder’s tool, placed together with the welding wires in a rack box on the right fenestrated shelf.

As you can see, the use of a diesel engine on the BREM-1 allows you to power the welding installation only from the starter-generator of the engine, operating in generator mode with charged batteries.

The disadvantage of the BREM-1 is that in case of faulty (or discharged) batteries, it is impossible to switch the starter-generator to welding mode and, therefore, it is impossible to make electric welding. Another disadvantage is that the components of the welding installation are dispersed along the body of the BREM, and this does not allow to quickly prepare the welding equipment for work.

As mentioned above, the BREM-1, made on the basis of the chassis of the T-72 tank with a diesel engine, is intended mainly for servicing tanks of this family. For tanks in the arsenal of the T-80 family with a gas turbine engine, it is advisable to use an ARV on the chassis of a tank of the same family. The launch and power supply system for tank chassis consumers with gas turbine engines is arranged differently than on tanks with a diesel engine. So, to start a gas turbine engine, a starter is used that works from one stage of the engine, and the tank consumers are supplied with power from a generator connected to another stage; therefore, the BREM, made on the basis of a T-80 family tank, has a power supply system for repair and evacuation equipment, in particular welding installation, organized differently than on the BREM-1.

Known AREM, made on the chassis of the T-80U tank with a gas turbine engine (Patent No. 6883 for a utility model of the applicant by application No. 97112794 of July 30, 1997, Cl. F41H 7/02), selected as a prototype, which contains an armored hull, electrical equipment , repair and recovery equipment, including the main and auxiliary winches, a crane with a remote boom and an electric welding installation. The electric equipment of a gas turbine engine contains a starter for starting the gas turbine engine and a generator, which, together with the starter, participates in the start of the gas turbine engine and is the main source of electricity for all consumers of the on-board network, and is also designed to charge batteries when the gas turbine engine is running (Object 219P. Technical description and operating instructions. Book second; M., Military publishing house p. 513-520). Power supply to control systems for repair and recovery equipment (hoisting crane, main traction and auxiliary winches) is carried out with a gas turbine engine running from its generator, and with an idle gas turbine engine - from a low-power autonomous gas turbine power unit (gas turbine). Electric welding machine works only with idle gas turbine engine from GTA. The electric welding installation is located in an armored bunker mounted on an armored housing behind the chassis control compartment along the entire length of the engine room above the right fenestrated shelf. In the indicated hopper, the electric welding installation is placed together with the hydraulic equipment for controlling the main winch.

The disadvantages of this ARV include the following:

- due to the fact that the power supply of the electric welding installation is carried out from the gas turbine, which works only when the gas turbine engine is turned off, it is impossible to conduct electric welding (metal cutting) together or simultaneously with other repair and recovery equipment, for example, with a crane for mounting and dismantling large heavy units and blocks of repaired equipment, the electric control of which is carried out either from a generator of a working gas turbine engine (when the gas turbine does not work, and therefore the electric welding installation does not work), l because from when the gas turbine engine is inactive from the gas turbine engine (when it is impossible to transfer electricity to the welding and at the same time to other consumers, which include a crane, traction equipment, etc.). This drawback does not provide the ability to weld, in particular with the parallel operation of crane equipment, which may be necessary to hold the welded structures;

- when carrying out electric welding works with power supply from the GTA, the on-board network of the BREM (lighting, intercom, etc.) can only work from the battery, while the batteries are discharged;

- the performance of electric welding (or metal cutting) is accompanied by heating of the welding installation, and consequently, an increase in temperature inside the armored hopper in which it is located, which causes overheating not only of the welding installation itself, but also of the hydraulic control equipment of the main traction winch placed with it, because of what their time of continuous work is reduced. In addition, the joint location of the specified hydraulic equipment and welding equipment does not allow to place all the components of the latter in one place (in the hopper), for example, the welding control panel is installed in the control section of the BREM housing, and the set of accessories and the welder’s tool is in the spare parts box, which reduces the efficiency of organizing and conducting welding work.

The problem to which the present invention is directed, is to create an ARV on a tank chassis with a gas turbine engine with enhanced performance characteristics.

The technical result achieved by solving the problem is:

- the possibility of carrying out electric welding work in two modes - with a gas turbine engine running from its starter and with a gas turbine engine inoperative - from the gas turbine engine;

- the possibility of joint or simultaneous operation of an electric welding installation with repair and recovery equipment (hoisting crane, traction winches, etc.);

- in reducing the load on the power source of the welding installation with a short interruption of the welding process;

- to increase the duration of the continuous operation of the welding installation;

- to increase the efficiency of electric welding.

The problem is solved in that in the BREM on the tank chassis containing repair and recovery equipment, gas turbine engine, welding equipment with a control unit, a welding network with power supply and welding control circuits, a gas turbine engine starting system, including a starter, a power supply system for the chassis electric power consumers when the gas turbine engine is running comprising a generator, a power supply system for consumers of a chassis or welding equipment with a gas turbine engine inoperative, including a gas turbine engine, and electric circuits connecting sources and consumers of electric power according to the invention, in additional electric power and control circuits connected with the gas turbine starter are formed in the arch network, while in the above power and control circuits of the welding equipment, a switching unit and power contactors are installed to enable switching of the welding equipment to the gas turbine starter with the gas turbine in operation or with the gas turbine with the gas turbine inoperative.

In order to achieve the best technical result:

- the welding control unit is equipped with an automatic switch configured to reduce the open circuit voltage during a short interruption of the welding process;

- the welding equipment is equipped with an external control panel equipped with a regulator of the magnitude of the welding current, for example batch;

- the electric welding installation is located in the armored body bunker, made over the chassis fenders on the side, on which the boom of the crane for repair and recovery equipment is installed;

- the armored hopper is equipped with lighting and a forced cooling device, such as a fan, for cooling the control unit during the welding process.

An analysis of the hallmarks showed the following:

- the presence of additional electrical circuits connecting the welding equipment with the gas turbine starter allows powering the electric welding equipment from the starter of the working gas turbine. So, a starter designed to spin a high-pressure turbocharger of a gas turbine engine when it is started, after starting a gas turbine engine, is constantly engaged with the engine drive box and, without a shut-off mechanism, spins idle. When voltage is applied to the starter, it self-excites, and the starter switches from idle to generator mode with the possibility of power supply to the welding equipment. Using the starter of a working gas turbine engine as an independent power source of an electric welding installation allows for joint or simultaneous operation of the welding installation with other repair and recovery equipment, for example, a crane, while recharging the battery and operating the on-board network (lighting, intercoms, etc.) because when the gas turbine engine is running, the specified consumers are supplied with electricity from a generator of a working engine;

- introduction of power contactors in the power supply and control circuits of the welding network (in the newly introduced circuits and in the circuits connecting the welding equipment to the GTA) and the presence of a switching unit that supplies voltage to either the power contactors of the power and control circuits connected to the starter or to the contactors circuits associated with the GTA, provides starter switching from idle to welding mode, or switching GTA from the on-board power supply mode to welding mode, thereby creating the possibility of powering the welding equipment Bani from two sources - GTA like traditional source - at the idle TBG and starter - with the TBG.

The invention is illustrated by drawings, where shown

- figure 1 is a General view of the ARVs on the side (the doors of the armored hopper are open in working order);

- figure 2 is a top view of the ARV (view A in figure 1);

- figure 3 is an armored hopper for placement of electric welding equipment (doors are conditionally shown in open form);

- figure 4 - connection diagram of electric welding equipment to power sources.

The proposed BREM is made on the basis of the chassis 1 (Fig. 1, 2) of a tank with a gas turbine engine 2, for example, a T-80U tank, using its main systems, components and assemblies, and contains an armored hull 3 with partially modified design, compared to the standard one tank, for the installation of repair and evacuation equipment and crew accommodation. Repair and recovery equipment includes a crane 4 with an arrow placed on the left side of the chassis 1, the main and auxiliary winches (not shown in Fig.). The power source of the electrical control system of the repair and evacuation equipment and the on-board network (lighting, walkie-talkie, etc.) with the gas turbine engine running is its generator 5, and with the gas turbine engine not working, the gas turbine generator 6 is installed in the building 1.

On the chassis of the chassis on the left side of the machine on the fenders 7 is made of an armored hopper 8, which houses the welding equipment for welding and cutting metal. The location of the welding equipment on the port side is due to the convenience of working together with a crane 4. The welding equipment includes the following: welding control unit 9 (figure 3), switching unit 10, control panel 11, welding socket 12 for connecting welding wires 13 of the welding networks, a set of accessories and a welder’s tool (including a mask of a welder 14 and electrodes 15). A welding network is understood as a closed circuit of electrical circuits that connect blocks (control and switching), nodes and elements of welding equipment to each other and to power sources. All of the listed components of the welding equipment set are located in an armored hopper 8. The control panel 11 is connected via a long flexible cable 16, which allows it to be removed from the hopper and placed directly at the welding site, and equipped with a regulator (not shown) of the welding current , for example, biscuit, and light indicators (not shown in FIG.) for monitoring the operation of the electric welding installation.

A fan 17 is installed in the armored bunker 8 for forced cooling of the welding control unit 9 and the lighting dome 18, which ensures welding work at night. The toggle switches 19 and 20, respectively, for turning on and off the ventilation and lighting, are located on the control panel 21. Power supply of ventilation and lighting is carried out from the onboard network.

The welding equipment can operate from two sources: either from the GTA 6 when the gas turbine engine is inactive, or from the starter 22 (Fig. 2, 4) with the gas turbine engine working 2.

To perform welding from the GTA 6, the welding equipment is connected to the GTA through the power supply circuit 23 and the control circuit 24, while its armature is connected to the welding socket 12 through the circuit 23, and the GTA excitation winding is connected by the circuit 24 to the welding control unit 9.

To enable starter 22 to be used as an independent power source for welding equipment with a gas turbine engine running, additional circuits are connected to the gas turbine engine starter - a power circuit 25 connecting the starter armature to the welding socket and a control circuit 26 connecting the starter excitation winding to the block 9 controls.

The switching unit 10 and power contactors 27, 28 and 29, 30, respectively installed in the circuit 23, 24 of the GTA 6 and in the circuit 25, 26 of the starter, are designed to switch to the welding mode either the GTA 6 or the starter 22. Supply voltage to those or other contactors for connecting the GTA or starter is carried out by switching the toggle switch 31 (figure 3) of block 10.

Work

Preparation for operation of electric welding equipment claimed by AREM is carried out as follows.

From the armored hopper 8 (figure 3) is removed the necessary tool and accessories of the welder. The forced cooling fan 16 is turned on and, if necessary, the illumination of the hopper. Switching the toggle switch 31 of the switching unit 10 transfers the desired power source to the welding mode.

The further welding mode has distinctive features depending on the selected power source - either from the GTE starter or from the GTA.

When the gas turbine engine 2 is running, welding is performed from the starter 22. To transfer the starter 22 to the welding mode, the toggle switch 31 is set to the position at which voltage is applied to the contactors 29 and 30 (Fig. 4), while the contactor 29 connects the starter armature circuit 25 to welding socket 12, and the contactor 30 connects the circuit 26 of the field coil of the starter to the block 9 of the control welding. The control panel 11 sets the magnitude of the welding current by means of a biscuit regulator and monitors the operation of the electric welding system using light indicators. In this case, the on-board network of the machine is powered from a standard generator 5, which allows simultaneously with electric welding (cutting) to work with other equipment - a hoisting crane 4, traction winches, and also provides recharging of the battery (not shown in Fig.). The location of the welding installation on one side with a crane 4 provides the possibility of their simultaneous, and if necessary, their joint work. The presence of forced ventilation of the control unit 9 allows you to increase the period of continuous operation of the electric welding installation.

When the gas turbine engine is not working, electric welding (cutting) is performed from the GTA 6. For this, the toggle switch 31 is placed in a position that switches the GTA into welding mode using power contactors 27 and 28.

When the welding process is interrupted (when the welding arc is interrupted) for a period of five or more seconds, block 9, which controls the excitation winding of the power source (starter or GTA), automatically reduces the open circuit voltage to 30 V, which reduces the load on the power source and reduce the possibility of overheating of the latter.

The proposed scheme for connecting an electric welding installation to either one power source - a starter, or to another - GTA is simple in execution. At the same time, the distinctive features of the considered modes and the possibility of choosing the most optimal welding mode give the BREM, made on the chassis of a tank of the T-80 family, certain advantages. So, during the operation of the electric welding installation from the GTE starter, the on-board network of the BREM is connected to the standard generator, which allows the crane to work and recharge the battery simultaneously with welding.

On the other hand, when welding from a gas turbine, it is possible to save gas-turbine engine resources and fuel. In addition, the placement of all components of the welding equipment in one place - in the hopper 8 allows you to quickly carry out the preparation and execution of electric welding works (electric cutting).

Thus, the claimed invention allows for electric welding (metal cutting) in two modes - when the gas turbine engine is running from its starter, with the possibility of joint or simultaneous operation of the electric welding machine with other BREM repair and recovery equipment (crane), and when the gas turbine engine is inoperative - from the GTA, which allows to expand the operational capabilities of the BREM) on the tank chassis with a gas turbine engine, which is the solution to the problem.

Claims (5)

1. Armored repair and recovery vehicle on the tank chassis, containing repair and recovery equipment, a gas turbine engine, welding equipment with a control unit, a welding network with power circuits and welding control circuits, a gas turbine engine starting system, including a starter, a chassis power supply system for a working gas turbine engine, including a generator, a power system for consumers of the chassis or welding equipment with a non-working gas turbine engine, including an auxiliary gas-turbine unit, and electric circuits connecting sources and consumers of electricity, characterized in that additional electric power and control circuits connected to the gas turbine engine starter are formed in the welding network, while a switching unit and power are installed in the above power and control circuits of the welding equipment contactors with the possibility of switching welding equipment to the starter of the gas turbine engine - with the gas turbine engine running, or to the gas turbine nnomu unit - at the idle gas turbine engine. 2. Armored repair and recovery vehicle according to claim 1, characterized in that the control unit of the welding equipment is equipped with an automatic switch configured to reduce the open circuit voltage during a short interruption of the welding process. 3. Armored repair and recovery vehicle according to claim 1, characterized in that the welding equipment is equipped with an external welding control panel equipped with a regulator of the magnitude of the welding current. 4. The armored recovery vehicle according to claim 1, characterized in that the welding equipment is placed in an armored hopper of the chassis body, made above the fenders on the side, on which the boom of the lifting crane of the recovery and recovery equipment is installed. 5. Armored repair and recovery vehicle according to claim 4, characterized in that the armored hopper is equipped with lighting and a forced cooling device, such as a fan, for cooling the control unit of the welding equipment during the welding process.

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