Energy-saving operating equipment of excavator with articulated digging arm
SUBSTANCE: energy-saving operating equipment includes digging arm base, digging arm head, handle, bucket, the main hydraulic cylinders for lifting the digging arm, control hydraulic cylinder of the digging arm length, additional balancing pneumatic cylinder connected to portal and to the digging arm base. Piston cavity of balancing pneumatic hydraulic cylinder is connected to gas bottle charged with pressure of more than 10 MPa and having the volume equal at least to five operating volumes of balancing pneumatic hydraulic cylinder. At that, to piston cavity at least of one main hydraulic cylinder for lifting the digging arm there connected is hydropneumatic accumulator the gas cavity of which is charged with initial pressure of more than 10 MPa and divided at least into two gas chambers separated with a partition in which an adjustable orifice is installed.
EFFECT: higher operating efficiency of machine, lower energy losses and higher efficiency of operating equipment.
The invention relates to shovel universal excavators with articulated boom.
Known working equipment excavator with telescopic boom, for example [AC No. 384988, 29.05.1973, BI No. 25], containing the wheel base of the tractor, a shaft containing the base of the boom and the main boom tip, and the base of the boom is made in the form of a pipe, in which is located the tip of the boom and the hydraulic cylinder to adjust the length of the boom.
A disadvantage of this device are the large size of the arrows, due to the sequential arrangement of the hydraulic cylinder to adjust the length of the boom, main boom tip and the base of the boom.
The closest in technical essence of the known technical solutions to the proposed device is working equipment shovel excavator with articulated boom [Avenne. Shovel construction excavators. Moscow, Higher school", 1991. - 304 S. P.35], containing the tracked base machine, the base of the arrow, the tip of the boom, arm, bucket, key cylinders boom cylinder control the length of the boom.
The disadvantage of this device is the large load of the cylinders of the boom due to increased consolidatio working equipment, a large radius digging and deep digging.
Other deficiencies the MD device are large dynamic loads in the hydraulic boom at the beginning of its acceleration when lifting and breaking when lowering, due to the high design pressure in the hydraulic actuator (32 MPA) and a large consolidatio the location of the gravity of the items of work equipment relative to the hinge mounting of the boom on the portal.
Working equipment shovel excavator on AU No. 384988 and prototype [Avenne. Shovel construction excavators. Moscow, Higher school", 1991. - 304 S. P.20, p.35], is energy intensive, as when lifting a payload in the bucket useless expended considerable energy to overcome the forces of gravity of the boom, stick, bucket. To overcome these forces of gravity of the engine consumes fuel.
Object of the invention is the improvement of the design of work equipment excavator by balancing the gravity of the boom, dipper and bucket and providing damping arrows under dynamic loading.
The task of the invention is solved by the fact that in the known device, comprising an articulated boom, containing the base of the arrow, the tip of the boom, arm, bucket, key cylinders boom cylinder control the length of the boom, is additionally used balancing pneumohydraulic connected pivotally with the portal and the base of the boom piston chamber which is connected to the gas cylinder, the charged pressure of more than 10 MPa, the volume of which Rawa is, at least five working volume balancing pneumohydraulic, while in the piston cavity, at least one main lift cylinder boom connected to a hydropneumatic accumulator, a gas chamber which is charged initial pressures greater than 10 MPa and divided at least into two gas chambers separated by a partition that has an adjustable choke.
The proposed invention has allowed to create energy-saving production equipment and to carry out the oscillation of the boom in dynamic modes.
The invention is illustrated by drawings, where figure 1 shows a General view of energy-saving work equipment excavator on which the main lifting cylinders boom close balancing pneumohydraulic inside. Figure 2 shows the energy saving of the working equipment, which is conventionally cut off the main cylinders of the arrows and shows the balancing pneumohydraulic in the lower digging position and the upper position upon unloading of the bucket.
The invention includes a lower frame with tracked undercarriage mechanism 1, the turntable 2 with portal 3, which is pivotally mounted to the base of the boom 4, the hinge is attached to the tip of the boom 5, a handle 6, the bucket 7, the main hydraulic cylinders 8 of the lifting boom, ur evasively pneumohydraulic 9, piston chamber which is connected to the gas cylinder 10 (see figure 2) highway 11. In the piston cavity of the main cylinder 8 of the lifting boom connected hydroline 12 hydropneumatic accumulator 13 (see figure 1), in which the piston 14 divides the hydraulic and gas cavity.
The gas passage 15 of the hydropneumatic accumulator is divided into two gas cavity by a partition 16, which is adjustable choke 17. The base of the boom 4 and the tip of the boom 5 are connected by a hydraulic cylinder 18 of the regulation of the length of the boom.
The energy saving work of the working equipment is carried out as follows. Operation rotation of the bucket and the handle are made in the usual manner and the description are not permitted.
For lifting working equipment with the filled bucket rods of the main hydraulic cylinders 8 are pulled out of the cylinders and turn the base of the boom 4 counterclockwise about portal 3. At the same time (see figure 2) balancing pneumohydraulic 9, piston chamber which are connected by hydrologically 11 with a gas cylinder 10, carries out the balancing of the gravity of the base of the boom 4, the tip of the boom 5, the arm 6 and the bucket 7. Consequently, during the rise of the working equipment of the main cylinder 8 when lifting perceive only the payload of the weight of the payload in the bucket. In achiev is Tate this reduces the load on the engine, hydraulic pumps, hydraulic cylinders and increases the durability of the considered elements. At the same time significantly reduced the fuel consumption of the engine and increases efficiency of work equipment.
When lowering work equipment is retraction of the piston rods in hydraulic cylinders 8, the rotation takes place of work equipment clockwise relative to the portal 3, and the gas from the piston cavity balancing pneumohydraulic 9 is returned into the gas cylinder 10 almost without resistance. The volume of the gas cylinder 10 is equal to at least five working volume balancing pneumohydraulic, resulting in the raising and lowering of the boom pressure in the gas container 10 remains approximately constant.
At the beginning of the rise of a working equipment with the load in the bucket and when braking during lifting experience significant inertial forces from the mass of the load, bucket, stick, tip boom and the boom foot. For damping the boom in the piston cavity of the main hydraulic cylinders 8 hydroline 12 connected to a hydropneumatic accumulator 13 (see figure 1). The gas passage 15 of the hydropneumatic accumulator 13 is divided into two chambers by a partition 16 which is provided with an adjustable throttle 17.
When the pressure in the piston cavities of the main hydraulic cylinders 8 less than 10 MPa system de is Pyromania not working as the piston 14 of the hydropneumatic accumulator 13 is in the lower limit position.
When a dynamic load on the working equipment can be significant (>10 MPa) piston 14 begins to move upward, compressing the gas in the working chamber 15. As a result, the gas pressure above the piston 14 is much greater than over the baffle 16. Therefore, the gas in the hydropneumatic accumulator is exposed elastic compression, but is subjected to throttling using the throttle 17. Thanks to the emergence of additional damping force decreases the stiffness of the hydraulic system main hydraulic cylinders 8 and is limited to the dynamic pressure in the hydraulic pump.
Energy-saving production equipment excavators with articulated boom including a base boom top boom, arm, bucket, key cylinders boom cylinder control the length of the boom, wherein using the optional balancing pneumohydraulic connected with the portal and the base of the boom piston chamber which is connected to the gas cylinder, the charged pressure of more than 10 MPa and having a volume equal to at least five working volume balancing pneumohydraulic, while in the piston cavity, at least one of the main hydrocil the echoes of the lifting boom is connected to the hydropneumatic accumulator, a gas chamber which is charged initial pressures greater than 10 MPa and divided at least into two gas chambers separated by a partition in which you installed the adjustable choke.
SUBSTANCE: device comprises a boom, a bucket, the main hydraulic cylinder of the boom, a balancing pneumatic hydraulic cylinder, a gas balloon. The main hydraulic cylinder of the boom and the balancing pneumatic hydraulic cylinder are located in a single longitudinal vertical plane of the boom symmetry, so that the balancing pneumatic hydraulic cylinder is brought to the boom as close as possible in the lower and upper limit positions of the working equipment. The boom base is arranged in the form of a box, where the balancing pneumatic hydraulic cylinder is installed, a piston cavity of which is connected to a gas balloon charged with pressure of more than 10 MPa. At the same time the volume of the gas balloon makes more than five working volumes of the balancing pneumatic hydraulic cylinder.
EFFECT: energy-saving and simplification of design.
SUBSTANCE: energy-saving working equipment of a single-bucket excavator on a rotary column comprises a top utility tractor, a rotary column, including a base and a head, a boom, a handle, a bucket, main hydraulic cylinders of a boom. The boom is hingedly connected to a head of a rotary column, and the main hydraulic cylinders of the boom are hingedly connected to the base of the rotary column and the boom. A balancing pneumatic hydraulic cylinder is connected to the base of the rotary column and the boom, and a piston cavity of the balancing pneumatic hydraulic cylinder is connected to a gas balloon charged with pressure of more than 10 MPa. At the same time the gas balloon volume makes more than five working volumes of the balancing pneumatic hydraulic cylinder, a hinged joint of which is arranged on the base of the rotary column with displacement relative to the boom hinged joint on the rotary column head, with the possibility to ensure compact arrangement at the upper and lower positions of the working equipment.
EFFECT: increased effectiveness and efficiency factor, improved design of the working equipment.
SUBSTANCE: hydraulic system of independent flows distribution consists of hydraulic distributors, discharge cavities of which are supplied from according discharge hydraulic lines. At least another hydraulic distributor is supplied from several discharge hydraulic lines with its discharge cavity via check valves. And at least one check valve that supplies to discharge cavity of any distributor is arranged with the possibility of its forced closure in case of necessity.
EFFECT: distribution of several independent flows by minimum number of distributors between various hydraulic engines.
FIELD: machine building.
SUBSTANCE: device comprises boom, bucket, hydraulic cylinders of boom, balancing pneumatic hydraulic cylinder, gas balloon, hydraulic pump, main and additional hydraulic distributors of boom control. Piston cavities of boom hydraulic cylinders are arranged with the possibility of connection to hydraulic pump via main hydraulic distributor or additional hydraulic distributor of differential type, providing for the possibility to connect simultaneously piston and stem cavities of boom hydraulic cylinders to hydraulic pump. At the same time piston cavity of balance pneumatic hydraulic cylinder is connected to gas balloon charged to pressure of more than 10 MPa, and ratio of squares of piston diametre and boom hydraulic cylinders stem is within the range of .
EFFECT: energy efficiency, increased capacity, higher efficiency factor of working equipment.
1 cl, 3 dwg
SUBSTANCE: working machine designed for at least two functions including attachment displacement and (or) steering. The machine includes at least two hydraulic circuits, one hydraulic circuit for each of mentioned functions. Each hydraulic circuit includes at least one hydraulic pump to control operation of corresponding attachment or steering functions; separate first electric machine with possibility to transfer driving force and connected with each of mentioned hydraulic pumps for separate power supply to the pump and power takeoff form the pump; transmission for working machine displacement by means of driving wheels. The transmission includes at least one second electric machine mechanically connected with the mentioned first electric machines to exchange power between hydraulic circuits and transmission.
EFFECT: lower fuel consumption and higher efficiency.
22 cl, 9 dwg
FIELD: machine building.
SUBSTANCE: facility consists of compressor, oil-moisture separator and receiver pneumatically and successively interconnected. An output of the receiver is coupled to inputs of adsorbers with evenly distributed heaters; while outputs of adsorbers are pneumatically connected to a consumer. Also a compressor is equipped with a suction filter containing a case with a conic bottom and an orifice in its lower part, a connecting pipe of purified air outlet, a condensate extractor positioned in the bottom orifice, a reflecting partition, and a connecting pipe of purified air inlet. The case of the filter is made in form of a two-layer jacket with an air cavity connected to adsorbers and the connecting pipe of outlet of heated generated air to atmosphere by means of the connecting pipe of inlet of heating generated air via a pipeline and a control valve. Notably, curvilinear grooves with a dovetail shape are made on internal surface of the connecting pipe of inlet of purified air; the connecting pipe of purified air inlet is made in form of a convergent nozzle. A circular groove connected with a device for impurities extraction is made at the inlet orifice of the connecting pipe for purified air inlet. The circular groove is coupled with curvilinear grooves and is equipped with a mesh.
EFFECT: raised reliability of operation of pneumatic systems of control for excavators and cranes operating with considerable amount of solid particles in process dust due to reduced amount of impurities in sucked atmospheric air coming into cavities of compressor.
SUBSTANCE: invention refers to the field of machine building, namely to wheel excavator with hydraulic system. Hydraulic system of wheel excavator comprises pumps, stroke hydraulic motors, hydraulic distributor with address travel spool, power hydraulic lines including discharge power hydraulic line and power hydraulic lines of stroke hydraulic motors, servocontrol hydraulic lines, hydraulic switch of speeds with tap to connection of the second gear, unit of address travel spool control with tap to start excavator movement "forward". Hydraulic system comprises additional power circuit connected into power hydraulic lines between stroke hydraulic motors and discharge power hydraulic line, and additional circuit of servocontrol connected into hydraulic lines of servocontrol between hydraulic switch of speeds and unit of address travel spool control. Additional power circuit includes three-position spool with normally closed inlet, two outlets and two cavities of servocontrol, two-position spool with two inlets, four outlets and cavity of servocontrol, hydraulic lines that connect outlets of three-position spool to according inlets of two-position spool, and also hydraulic lines that connect the first and second outlets of two-position spool with power hydraulic lines of stroke hydraulic motors, the third and fourth outlets of which are arranged with the possibility to connect additional hydraulic set to them, for instance hydraulic hammer. Additional circuit of servocontrol consists of three-position spool control unit, having two taps, valve OR with tap and two feeds, valve AND with tap and two feeds.
EFFECT: invention provides for displacement of excavator under severe road conditions at the second gear, and also expanded functionality.
SUBSTANCE: invention refers to the field of machine building, namely to hydraulically driven crawler shovels. Hydraulic drive of crawler shovel comprises power pumps, control pump, distributor, hydraulic motors of stroke, power hydraulic lines, hydraulic lines of servocontrol with control units, hydraulic cylinders of caterpillar belt tension. Besides between each hydraulic cylinder of caterpillar belts tension and according power hydraulic lines of stroke, there is an additional circuit included, made of two drain check valves, discharge check valve, safety valve and hydraulic lines of servocontrol, at the same time piston cavity of hydraulic cylinder of tension of caterpillar belts is connected to discharge cavity of safety valve and through discharge check valve with discharge hydraulic line of servocontrol, and stem cavity - to drain cavity of safety valve and through drain check valves with power hydraulic lines of stroke.
EFFECT: invention provides for automatic tension of caterpillar belts independently on load on master wheels.
SUBSTANCE: invention relates to the field of mining and may be used in designs of mining machines and other fields of machine building. Hydraulic system of mining machine control is additionally equipped with hydraulic cylinders of telescope tightening, in working manifolds of which there is a hydraulic valve installed with logical function "OR", as well as controlled check valve with control cavity, besides inlet manifolds of hydraulic valve with logical function "OR", which is installed in working manifolds of hydraulic cylinders for telescope tightening, are connected to outlet channels of hydraulic valves with logical function "OR", which are installed in outlet channels of hydraulic distributors for control of hydraulic cylinders of actuator lift and rotation, and control cavity of controlled check valve is connected to outlet channel of hydraulic valve with logical function "OR", which is installed in outlet channels of hydraulic distributor for control of hydraulic cylinder of telescope extension.
EFFECT: invention increases rigidity and reliability of support structures of mining machine actuator, improves durability of machine as a whole.
1 cl, 1 dwg
FIELD: construction industry.
SUBSTANCE: group of inventions refers to mining engineering and construction industry, namely to construction machine, particularly for vibration generation. Construction machine includes transfer mechanism, at least one hydraulic drive and hydraulic system for providing hydraulic drive with hydraulic medium. At that, at least one lubrication hydraulic line by means of which hydraulic medium can be supplied to transfer mechanism as lubrication means is branched off hydraulic system. At that, in lubrication hydraulic line there provided is dosing device by means of which supply of lubrication means can be changed depending on operating mode of transfer mechanism.
EFFECT: improving operating reliability of machine.
13 cl, 1 dwg
FIELD: earth-moving facilities; hydraulic drives of scraper working members.
SUBSTANCE: proposed hydraulic drive contains pressure spool installed in parallel with like spaces of two hydraulic cylinders, pressure main line connected between two check valves, free outlet of check valve being connected with inlet of pressure spool and one hydraulic cylinder. Free inlet is connected with outlet of pressure spool and other hydraulic cylinder, drum main line connects opposite spaces of hydraulic cylinders. Hydraulic drive is furnished with two series-connected pressure spools. Inlet of first pressure spool and outlet of second pressure spool are connected with outlet of first hydraulically controlled reversible spool. Their common line is connected with controllable space of second hydraulic cylinder and is separated by check valve from pressure main line. Inlets of first hydraulically controlled reversible spool are connected to outputs of second hydraulically controlled reversible spool and are connected with controllable spaces of first and second hydraulic cylinders. One inlet of second hydraulically controlled reversible spool is connected with inlet of pressure spool and is connected to pressure line through check valve, and second inlet is separated from pressure line by other check valve. Control spaces of two hydraulically controlled reversible spools are united and are connected to pressure main line through two-position spool.
EFFECT: improved efficiency of control of scraper blade system.
FIELD: handling machinery, particularly soil-shifting, mining, agricultural and loading cyclic machines.
SUBSTANCE: device includes implement, main hydraulic cylinders and balancing hydraulic cylinder, at least one gas cylinder and hydropneumatic accumulator, main and additional hydrodistributors, as well as safety valve. Gas cylinder communicates with gas chamber of hydropneumatic accumulator. Device made in the first embodiment has the second additional hydrodistributor connecting working chambers of the main hydraulic cylinders with each other and with pump. Rod end of balancing hydraulic cylinder communicates with rod ends of the main ones. In the second embodiment additional hydraulic cylinder is arranged in main hydrodistributor case and connected to hydrolines of the main hydraulic cylinders through hydrolines. Additional hydrodistributor is installed so that additional hydrodistributor may connect working chambers of the main hydraulic cylinders with each other and with the pump when additional hydrodistributor is installed in the first position. Additional hydrodistributor being installed in the second position may connect working chambers of main hydraulic cylinders with each other and with drain. Rod end of balancing hydraulic cylinder is connected with rod ends of main hydraulic cylinders.
EFFECT: increased machine productivity due to increased implement hoisting speed.
3 cl, 4 dwg
FIELD: mechanical engineering, particularly hydraulically driven dredgers.
SUBSTANCE: drive comprises power plant with controlled power pumps having servo control taps, gear-box, hydraulic motors and hydraulic equipment. Hydraulic equipment has hydraulic distributor with address travel spool and its servo control taps, power hydraulic lines and servo control loop with hydraulic lines. The controlled power pumps may supply predetermined volume of working liquid at zero pressure in servo control lines thereof. Hydraulic lines for servo control of address travel spool have additional circuit including control unit, servo control lines and logical hydraulic OR valve with two inlet and one outlet taps. Hydraulic lines of servo control circuit included in additional loop are connected with inlet taps of hydraulic OR valve having outlet tap communicated with servo control taps of address travel spool.
EFFECT: provision of no-failure gear actuation in standing still dredger.
FIELD: mechanical engineering, particularly hydraulic systems for mobile machines.
SUBSTANCE: hydraulic system comprises hydraulic reservoir, controllable hydraulic pump with load-sensitive control slide, power hydraulic line protected with safety valve, main hydraulic distributor with three-position slide having one pressure supply means, two discharge lines, two working outlet means and line, which provides connection of each working outlet means with LS line, attached to control slide. The hydraulic system is provided with pressure control valve and with controllable reducing valve installed in LS line. Input and output of reducing valve are connected to hydraulic distributor and control slide correspondingly. Control line of reducing valve is linked to pressure control valve outlet. Inlet and discharge line of the pressure control valve are connected with power hydraulic line and with hydraulic reservoir correspondingly.
EFFECT: increased operational efficiency and reliability.
7 cl, 1 dwg
FIELD: earth-moving, mining, building machines and other wheeled and caterpillar handling periodically acting machines.
SUBSTANCE: device comprises working implement, main and balancing hydraulic cylinders, gas cylinder, main and additional working liquid distribution means. The piston cavity of balancing hydraulic cylinder is connected with gas cylinder. Additional distribution means may connect working cavities of main hydraulic cylinders one with another and with hydraulic pump during implement lifting.
EFFECT: increased working implement lifting speed without pump and system parameter change.
FIELD: mining industry, mechanical engineering, possible use in system for controlling caterpillar drive of mining machine.
SUBSTANCE: hydro-system contains pumps for caterpillar drive and pump, feeding system of working functions of machine, hydro-distributors for controlling caterpillar drive, driving hydro-motors and working mains, two controllable check valves and hydro-distributor for controlling system of machine working functions. Outlet channels of hydro-distributor for controlling system of machine working functions are connected to inlet channels of controllable check valves, which are connected between each other. Outlet channels of these valves are connected to working mains of driving hydro-motors and hydro-distributors for controlling caterpillar drive.
EFFECT: possible movement of mining machine in case of breakdown of driving pumps at the expense of influx of working liquid from pump driving system normally used for working functions of machine.
FIELD: earth moving machinery.
SUBSTANCE: invention relates to hydraulic drives of draw-booster gears of tractor-drawn scrapers. Proposed hydraulic drive contains pump, hydraulic tank, hydraulic cylinder, pressure valve connected in parallel with hydraulic cylinder, and hydraulic distributor. Hydraulic drive contains additionally hydraulic accumulator, time relay, check valve, pressure valve is provided with control line, and hydraulic cylinder has control arm engaging with two-position spool whose input is connected with pump and output, through time relay, with hydraulic accumulator and control line of pressure valve and with input of check valve whose output is connected to input of pressure valve.
EFFECT: provision of automatic continuous increase of adhesion weight of tractor of scraper when digging.
FIELD: earth-moving and transport machines, particularly blade assemblies having changeable width of cut.
SUBSTANCE: blade assembly comprises side sections and central section. The sections are provided with undercutting blades and are directly connected to bucket bottom. The central section is hinged to bucket bottom and is operated by rotation hydraulic cylinders through operation levers. Undercutting blades made as gussets are connected to inner edges of side sections from below. The gussets have supports to cooperate with central section in lower position thereof. Undercutting blades of central section are connected to outer side edges of central section. Undercutting gussets are provided with orifices to arrange fixers installed in lower parts of side sections so that they may cooperate with end switches. Position switches adapted to cooperate with operation levers of central section in central or extreme positions are mounted on bucket side walls. Hydraulic cylinders for central section rotation are linked in pairs to hydraulic cylinders for bucket operation. Lifting and lowering cavities of hydraulic cylinders are correspondingly communicated with raising and deepening cavities of hydraulic cylinders for central section rotation. Hydraulic drive for blade assembly includes hydraulically operated on-off three-way slide. The first outlet of the slide is united with the third one and is linked to raising cavity of hydraulic cylinder for central section rotation. Operational chamber and the first inlet of the slide are connected to outlet of pressure slide having output connected to lowering cavities of hydraulic cylinders for bucket operation. The second and the third inlets of on-off three-way slide are correspondingly connected to lifting cavities of hydraulic cylinders, which operate front bucket gate and lowering cavity of hydraulic cylinders for bucket operation.
EFFECT: decreased load to be applied to blade system during earth cutting as central section is in central and extreme positions, provision of automatic installation of above section in side blade plane and in extreme positions.
FIELD: mechanical engineering.
SUBSTANCE: group of invention relates to boom earth-moving, mine, construction and loading lifting-and-transporting machines of cyclic action. Proposed balancing system contains working equipment, boom hydraulic cylinders and balancing cylinder including hydraulic rod space and gas piston space connected with gas bottle, and distributors. According to first design version, hydraulic rod space of balancing cylinder is connected by hydraulic line with drain into hydraulic tank, and distributor of hydraulic liquid is installed for connecting in one position of spool, of boom hydraulic cylinders working spaces to each other with hydraulic pump. According to second design version, distributor is installed in system for connecting working spaces of boom hydraulic cylinders to each other and with hydraulic pump. According to third design version, rod space of balancing cylinder is connected with distributor installed for connecting, in one position of spool, of rod space of balancing cylinder with into hydraulic tank, and in other position, with hydraulic pump. Distributor is installed in hydraulic line of boom hydraulic cylinders for connecting, in one position of spool, of spaces of boom hydraulic cylinders to each other and with hydraulic pump.
EFFECT: increased capacity of machine owing to higher speed of lifting and lowering of working equipment.
5 cl, 6 dwg
FIELD: mechanical engineering, particularly earth-moving and construction equipment to be operated at low temperatures.
SUBSTANCE: device for hydraulic drive heating comprises heat engine and hydraulic pump kinematically connected with each other. Device also has liquid heat carrier circulation loop including heat accumulator. Heat pipe is connected to heat engine exhaust pipe through two-way valve. Heating member is arranged in tank and linked to heat engine generator.
EFFECT: increased simplicity and efficiency of hydraulic drive heating at negative ambient temperatures.