System and method of machine temperature control
FIELD: machine engineering.
SUBSTANCE: implementation of the method includes a first power generation device, a second power generation device, a first cooling fan hydraulically connected to the first power generation device, a second cooling fan hydraulically connected to the second power generation device, a controller and fan control device installed and connected by means of fluid between the first cooling fan and the second cooling fan. It is determined whether the first power generation device or the second power generation device is operating at the drive shaft speed below the threshold speed value. It is detected whether the diagnostic fault code is active with respect to the fan control device. The signal is sent to the fan control device. The fan control device is activated. Hydraulic power to the first cooling fan and the second cooling fan is provided depending on, whether the first power generation device or the second power generation device operates at the speed of the drive shaft above the threshold speed value. Working machines are also proposed.
EFFECT: working machine cooling system is controlled.
20 cl, 8 dwg
FIELD: machine building.
SUBSTANCE: invention relates to the boom machines, namely to the single-bucket excavator and front loaders of cyclic operation. The energy-saving device of the boom machine is suggested: energy-saving cylinder, gas bottle, hydraulic distributor, stock cavity of the energy-saving cylinder. At that, the piston cavity of the compensating hydraulic cylinder is connected directly through the hole in the casing wall with the casing of the gas bottle, and stock cavity of the energy-saving cylinder is connected through the hydraulic distributor with the drain main. At that, the total volume of the gas cavity of the energy-saving cylinder and gas bottle exceeds two volume of the work stroke of the energy-saving cylinder.
EFFECT: simple design, exclusion of energy losses during rising of the gravity forces of the work equipment, reduction of the energy and fuel consumption by the internal combustion engine.
FIELD: machine building.
SUBSTANCE: operation of reduction of forces of gravity of working equipment with the rod of equalising cylinder is performed, the reduced force at the rod by gas pressure in the piston cavity is counterbalanced, and operation of stabilising of compressed gas pressure is performed. Meanwhile also the piston compressed gas cavity is sealed from atmosphere by means of connecting of variable volume of the rod hollow filled with greasing fluid, with the body of the deformed low pressure pneumocamera. The operation of pressure stabilising in the gas cavity is performed at the expense of increase of volume of high-pressure gas cavity. The device for counterbalancing of forces of gravity of working equipment of jib machines is offered which includes the equalising barrel and gas bottle. Meanwhile the equalising cylinder with a rod and piston are located inside the gas bottle body charged by compressed air. And the rod hollow of equalising cylinder is filled with lubricant fluid and is connected to the body, where the low pressure pneumocamera is installed. Meanwhile the piston and rod of equalising cylinder are made hollow.
EFFECT: lowering of load on the main hydraulic cylinders of the jib and on the engine shaft, and fuel consumption.
2 cl, 4 dwg
FIELD: machine building.
SUBSTANCE: invention refers to hydraulic control units for agricultural or building machines. A valve cluster to control at least one consumer is proposed, the consumer comprises two connections (A, B) to the consumer sides, connection (P) to a pump and connection (T) to a tank as well as four slide control valves (C1-C4) which are hydraulically controlled by relevant control connection (c1-c4). The first slide control valve (C1) couples the connection (P) to the pump and the first connection (A) to the consumer side, the second slide control valve (C2) couples the connection (P) to the pump and the second connection (B) to the consumer side, the third slide control valve (C3) couples the first connection (A) to the consumer side and the connection (T) to the tank and the fourth slide control valve (C4) couples the second connection (B) to the consumer side and the connection (T) to the tank. Additionally two servovalves (Y1, Y2) are provided to control the control connections (c1-c4) respectively of each pair of slide control valves (C1-C4).
EFFECT: reduced inner pressure losses and higher efficiency of consumer operation.
15 cl, 4 dwg
FIELD: physics; control.
SUBSTANCE: disclosed group of inventions relates to a hydraulic control system for working machines. The hydraulic control system has a pump, a tool actuator, a tool control valve configured to control the flow of pressurised fluid fed to the tool actuator, and a controller. The controller includes a feed-forward control map which responds to the intended change in the required flow rate with the possibility of relating the tool movement request to the change in discharge flow rate of the pump, and operably connected to the tool control valve and the pump. The controller can further be configured to receive a tool movement request. The controller can further be configured to estimate changes in the required flow rate of the tool control valve associated with the tool movement request. The controller can also be configured to generate instructions for adjusting the discharge flow rate of the pump based on the intended change in the required flow rate to execute the tool movement request. Also disclosed are a method of controlling tool movement and a machine having said hydraulic system.
EFFECT: providing feed-forward control to change supply of a liquid before the need thereof arises.
19 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: invention relates to operation of working machine hydraulic system. Proposed method comprises the steps that follow. Equipment configuration is retained at definite orientation to measure first pressure in hydraulic drive chamber (56, 58) connected with equipment at preset position. First signal is compared with first pressure magnitude. First functional relationship (71) is selected from multiple memorised functional relationship if said first signal is higher than first pressure magnitude. Second functional relationship is selected from multiple memorised functional relationships if said first signal is lower than first pressure magnitude. Hydraulic drive is controlled on the basis of selected functional relationship. Note here that each of multiple memorised functional relationships is associated with different category of equipment configuration.
EFFECT: possibility to modify relationship between hydraulic drive speed.
9 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: invention refers to machine-building hydraulics, and namely to hydraulic actuators of mobile machines and hydraulic plants of cyclic action with several actuating mechanisms. The invention proposes a channel of multiflow hydraulic actuator, which is intended for supply of a working liquid flow to pressure cavities and consists of several in-series connected double flow cavities having the possibility of disconnecting their inlets and outlets. Besides, on the flow inlet side, each double flow cavity is connected to the corresponding pressure cavity. Besides, in ties between pressure and overflow cavities there additionally installed are check valves directed with their outlets to pressure cavities. And outlets of double flow cavities are connected through inlets of check valves to the corresponding pressure cavities. Besides, the outlet of the last double flow cavity serves as an inlet for the other flow.
EFFECT: proposed invention allows supplying two independent flows via one hydraulic channel with several pressure cavities, as well as simplifying a hydraulic actuator and reducing dimensions of hydraulic equipment.
2 cl, 8 dwg
SUBSTANCE: ripper contains bidirectional liquid energy accumulator, underlying machine, framed suspension with hinged ripper tip mounted on it and elastic system. At that elastic system contains the main cylinder with piston at the rod mounted on the frame and power-operated rod passing through articulated rod and ripper tip. At that the main cylinder is divided by partition into two independent cylinders equipped with main and auxiliary cavity. In auxiliary cavities of cylinders there are installed pistons connected to hollow rods which interact with power-operated rods passing through the main cavities and fixed at inners walls of travelling barrel covering the main cylinder which is connected to ripping rack through a hinge. Auxiliary cavities of each cylinder are equipped with openings from rod side and free piston side, which interact with reversive hydro pump through bidirectional hydraulic locks and pipelines. Besides elastic system is equipped with auxiliary reversive hydro pump which outlet is connected though bidirectional hydraulic locks to openings in walls of the main cylinder cavities while its inlet is connected to pipeline with a tank for liquid storage.
EFFECT: increasing efficiency of soil ripping due to reduction of pulling force and dynamic loads acting on underlying machine and their transfer to the area of soil destruction within the wide range for forced oscillation frequencies of actuating device.
FIELD: engines and pumps.
SUBSTANCE: proposed device comprises control means and detection means. Control means serve to control engine output power for driving the machine. Detection means allow identification of reverse conditions, motion speed and preset gear ratio. In reverse, control means vary output power by control over engine shaft rpm.
EFFECT: fuel savings.
3 cl, 7 dwg
SUBSTANCE: loader boom hydraulic cylinder is proposed, comprising a body, lower and upper covers of the hydraulic cylinder, a braking device and a check valve. At the same time the check valve is made in the form of a cylindrical cap with a spring inside and an inlet nozzle installed in a separate body fixed on the hydraulic cylinder body. Besides, the specified valve communicates with the piston cavity of the hydraulic cylinder by means of an additional hole made in the hydraulic cylinder body.
EFFECT: elimination of piston strikes against a hydraulic cylinder cover as a loader boom is installed in a position of excavating start at the level of the support surface.
SUBSTANCE: collector of bulldozer equipment of an earth mover is proposed, which comprises a body with radial holes for supply and discharge of working fluid, connected as capable of rotation and axial displacement with a blade frame. Inside the body there is a part of a fixed core, installed with a gap into eyes of the blade frame and stopped by the other part against rotation in a lever of a blade lifting mechanism. Besides, the body is equipped with a leash element with a through slot. The fixed core is made with circular grooves for installation of seals and circular bores, communicated with radial holes of the body and channels of supply and discharge of working fluid in the lever of the blade lifting mechanism and axial channels for transfer of working fluid from the lever of the blade lifting mechanism to the blade frame. At the same time the specified axial channels are closed with plugs with seals at the end side of the core and are pressed with a flange on bolts. Connection of the body with the blade frame is carried out by means of a threaded element screwed into the blade frame and stretching via the central axial hole installed into a cut slot of the leash element, a stop made in the form of a four-face rod with a base in the form of a square, with a support site perpendicular to its faces. Between the leash element and the stop in the radial direction there is a gap, the value of which is more than the total value of gaps between the outer surface of the core and inner surfaces of the blade frame eyes. Height from the surface joined with the blade frame to the support site of the stop is more than the thickness of the leash element, and the width of the stop is less than the width of the slot of the leash element.
EFFECT: increased operational resource of a collector due to elimination of direct transfer of loads from a movable part of a machine towards a fixed one.
SUBSTANCE: device comprises an antenna of GPS/Glonass systems or a photodetector installed on a vertical rod fixed on a work tool with the help of a bracket with a biaxial hinged joint. Hinged joint axes are equipped with units of rotation with sensors of turn angle and units of braking with electromagnets. A counterweight is fixed in the lower part of the rod. As position of the road building machine or work tool changes relative to the horizon, the rod under action of the counterweight is turned on axes of the biaxial hinged joint and preserves its vertical position. The device is equipped with a system unit supplying control pulses to electromagnets of braking units. The system unit may receive data from sensors of turn angle, has a differentiating link in its composition, a relay link with an area of insensitivity, a unit of pulses generation and an amplification link.
EFFECT: reduced additional error of measurement, higher accuracy of works carried out with a road-building machine.
2 cl, 7 dwg
FIELD: machine building.
SUBSTANCE: invention is related to the field of machines intended for performance of earth and loading works, namely to machines such as single-bucket hydraulic diggers. Bearer frame of loader-digger working equipment comprises longitudinal beams with elements of bearer frame fixation on tractor, cross beams that are rigidly connected to longitudinal beams, bracket installed on upper bases of longitudinal beams with lugs that have openings in bushings for installation of rotary column of excavator equipment and hydraulic cylinders of its rotation, and brackets for installation of outriggers and hydraulic reservoir. Bracket is arranged from two vertical sides installed at the angle to each other, between which lugs are installed. Base of the lower lug is located on the same vertical level with lower edges of sides and is rigidly connected to upper bases of longitudinal beams, and also by means of two ribs with side surface of cross beam. Upper and middle lug are connected with rib, which is rigidly fixed to lower plane of upper lug and its bushing, and on the other side - with upper plane of middle lug in zone of openings for hydraulic cylinders of column rotation, at that bent sheet stands are connected to external sides of longitudinal beams, and these stands are also connected to sides of bracket, creating rigid space structure.
EFFECT: simplification of design and technology of loader-digger bearer frame manufacturing technology, reduction of nomenclature of roller stock rigging used in bearer frame design.
SUBSTANCE: air heating device includes a housing with air flow inlet and outlet and a heating assembly and a centrifugal fan, which are arranged in it. The heating assembly includes a shell and sections of spiral elements enclosed in it, which are electrically connected in series and fixed with their ends on screws that tighten insulators. Insulators are located on axially extended supporting plates that are formed as an internal assembly in the form of a polyhedron, which is attached to the shell. A centrifugal fan is placed to the outlet wall of the housing, installed after the heating assembly and has a casing in the form of a snail. The outlet opening of the casing corresponds to the outlet opening of the housing. The inlet opening of the centrifugal fan is a confuser and corresponds to the outlet opening of the shell of the heating assembly. The device can contain hollow flattened ring-shaped holders that are located coaxially to the shell of the heating assembly inside it. The ring-shaped holders are located at some distance from each other to opposite ends of the heating assembly and form along with the axially extended supporting plates an internal assembly of heating assembly 6, which is attached to its shell. The axially extended supporting plates are equally spaced on the ring-shaped holders in azimuthal direction.
EFFECT: enlarging functional capabilities of an air heating device with maintenance of an inertia-free and compact device.
10 cl, 6 dwg, 2 ex
SUBSTANCE: invention relates to vehicle, in particular to rail vehicle. The vehicle includes water supply installation for consumers (4, 5) and cooling installation (1) which has drain pipeline for interception of water which appears during cooling installation (1) operation. Drain pipeline of cooling installation (1) is connected with at least one water consumer (4, 5). In the drain pipeline of cooling installation (1), intermediate reservoir (2) is integrated which reservoir serves to collect condensed water and which is connected via pipeline to reservoir (3) with water reserve for water supply installation which reservoir is connected via additional pipeline with at least one consumer (4, 5).
EFFECT: reduced water consumption.
6 cl, 7 dwg
SUBSTANCE: invention relates to bidirectional cable linkage to be used in vehicle air-conditioning unit. Control means for air-conditioning unit include double bidirectional cable linkage made of two parts - shell or fixed part in the form of outer tube and inner tube, and moving cables. Moving cables are made capable to transfer movement from control handle to flap-positioning mechanism via double cable. The linkage is attached to body and to control panel using quick-release connection.
EFFECT: simplified linkage design.
12 cl, 14 dwg
SUBSTANCE: invention relates to coolers for transport facilities. Carrier is equipped with at least one component (K) blown with rated mass flow of cooling air by at least one blower (L) or spoiler. Said rated mass flow of cooling air allows sufficient cooling of said component (K) for accepted maximum heat load. Cooling air mass flow force control device (S) allows for heat demands of component (K) in at least one upper speed range and calculates said cooling air mass flow so that the sum of power consumed by said component (K), said blower and portion of vehicle traction power consumed for cooling air blowing is lower than the sum the sum of power consumed by said component (K), said blower and preset rated portion of vehicle traction power consumed for cooling air mass flow blowing.
EFFECT: decreased power consumption for cooling and heating purposes.
23 cl, 3 dwg
SUBSTANCE: vehicle includes cabin unit (3) tilted relative to vehicle frame (2) between lowered state and raised state, the first circuit (10) located on vehicle frame for circulation of the first substance, the second circuit (20) located in cabin unit for circulation of the second substance, and heat-transfer arrangement (4) for heat exchange between the mentioned substances. The heat-transfer arrangement includes the first heat-transfer unit (11) installed on vehicle frame and included into the first circuit to provide flow of the first substance through it and the second heat-transfer unit (21) installed in cabin unit and included into the second circuit to provide flow of the second substance through it. These heat-transfer units (11, 21) are in mutual heat-transfer contact when cabin unit is in lowered state and are separated from each other when cabin unit is in raised state.
EFFECT: decreased wear and tear of hoses passing between cabin unit and vehicle frame during vehicle operation.
14 cl, 7 dwg
SUBSTANCE: invention relates to method and device for passenger car temperature (Thab) control (Thab) by means of initializing at start an expected temperature (T^ hab) of passenger compartment by the temperature(Tinit) predetermined by time period of prestart stop in order to produce adjustable heating power (Preg) which decreases a discrepancy between preset temperature (T*hab) and expected temperature (T^ hab).
EFFECT: better temperature control of passenger compartment.
7 cl, 3 dwg