The tank is designed for use in hydraulic harvester. The tank has a body, a drain pipe, magnetic trap, a device for cleaning the working fluid, including the drain Cup, filter element, safety valve cover. A relief valve mounted on the cover and provided with a visual control to its closure. Magnetic trap is fixed in the lid of the Cup drain, before the drain pipe. The item visual inspection of the closure of the safety valve connected to the tank above the liquid level therein. Effect: higher efficiency of cleaning fluid in the tank. 2 C.p. f-crystals, 1 Il.
The invention relates to agricultural machinery, in particular to the hydraulic tank hydraulic harvester.
Famous tank combine harvester (“propelled combine Harvesters “don-1500” and “don 1200”, Technical description and user's manual. - Rostov-on-don, 1986, pages 142-143, Fig.120), a device for cleaning the working fluid which is located and fixed on the bottom cover of the Hydra is t leak oil, complicated by its design through commissioning locking device. In addition, not reliable control against ingress of unfiltered fluid into the tank in case of contact with metal particles between the seat and the valve. In this case, the electrical connection between the valve and seat is not disturbed and the alarm device will not work.
In was taken as a prototype tank (“self-Propelled combine harvester"Yenisei-1200", Technical description and operating instructions, Krasnoyarsk, 1988, page 98, 100, Fig.116), equipped with a magnetic trap, located in the body of the tank, a device for cleaning fluid mounted in the top cover of the tank and including a drain Cup with a filter element, safety valve and cap.
The positioning and fixing of the drain Cup with a filter element and a safety valve on the lid of the tank improves the conditions of their service. The disadvantage of the tank is that it is not controlled by reliable closing of the safety valve and the clogging of the filter element, the latter is not balanced and is not protected against ingress of metallic impurities in the fluid flow coming from the Hydra is involved in the tank. This is achieved by the fact that the tank includes a housing, a drain pipe, magnetic trap, a device for cleaning the working fluid, including the drain Cup, filter element, safety valve cover, with a relief valve mounted on the cover and provided with a visual control of its closure, and magnetic trap is fixed in the lid of the Cup drain, before the drain pipe, the element visual inspection of the closure of the safety valve is connected to the chassis of the tank above the liquid level therein. Comparative analysis of the prototype shows that the inventive device is characterized in that a relief valve mounted on the cover and provided with a visual control of its closure, and magnetic trap is fixed in the lid of the Cup drain, before the drain pipe, the element visual inspection of the closure of the safety valve is connected to the chassis of the tank above the liquid level therein. Verification of compliance of the claimed invention to the requirement of inventive step showed that the invention is not necessary for the expert in the obvious way from the prior art, because of the last not identified the different signs on the achievement of the technical result.
The drawing shows a structural diagram of the hydraulic tank.
The tank 1 has a housing 2, the outlet pipe 3, the drain Cup 4, which houses the filter element 5 mounted on the tube 6, a magnetic trap 7 and the relief valve 8 mounted on the cover 9 Cup drain 4. The safety valve 8 is connected with the housing 2 element visual inspection 10 closing of the safety valve 8.
The tank works as follows.
After filling out the maximum amount of Executive bodies of the hydraulic system (not shown) and remove the air tank 1 disapprovals working fluid. When the hydraulic working fluid from it enters the tank 1, its drain Cup 4 through the outlet pipe 3. Her whole stream washes the magnetic trap 7, is separated from metal inclusions, and then passes through the drain Cup 4, the filter element 5, is cleared and the pipe 6 merges directly into the casing 2 of the tank 1. The filter element 5 generates resistance to the passage of the working fluid. Resulting in spill cups 4 appears pressure. In the case of incomplete tightness of the safety valve 8 will detect leakage of the working fluid on the element of visuo fault. Then cover 9 with a safety valve 8 is set in place, set up in the hydraulic system.
After a long period of operation of the hydraulic system filter element 5 of the hydraulic system is contaminated, its resistance to the passage of the working fluid increases and reaches the setting of the safety valve 8, it opens. Part of unfiltered oil begins to flow into the tank 1 through the valve 8 and the element visual inspection 10. The hydraulic system is switched off. Removed the cover 9 and is maintenance of elements of the device cleaning fluid tank. Dismantle the filter element 5, purified magnetic trap 7, the relief valve 8, washed drain the Cup 4. Then drain the Cup 4 is assigned a new filter element 5 and it is installed in the hydraulic tank 1. Then on the cover 9 mounted magnetic trap 7 and the relief valve 8. Set the cover 9 and the tank 1 is ready for operation. Given that all elements of the cleaning fluid are higher than its level in the hydraulic tank 1, leakage during maintenance are excluded.
Thus, the tank having a cleaning device of the working fluid at the Koa magnetic trap is installed on the lid before you drain pipe, allows you to control the reliability of the closing of the safety valve during running combine harvester at the factory and during operation to determine the time of the maintenance elements of the cleaning device, to relieve and protect the filter element from contact with metal inclusions.
1. The tank body, the drain pipe, magnetic trap, a device for cleaning the working fluid, including the drain Cup, filter element, safety valve cover, characterized in that a relief valve mounted on the cover and provided with a visual element of control it is closed.
2. Tank under item 1, characterized in that the magnetic trap is fixed in the lid of the Cup drain before drain pipe.
3. Tank on PP.1 and 2, characterized in that the element visual inspection of the closure of the safety valve connected to the tank above the liquid level therein.
FIELD: mechanical engineering; machine building hydraulics.
SUBSTANCE: invention can be used on vehicles and machine-and-tractor units operating under unsteady conditions of movement. Proposed device contains planetary train 1, reactive link 3 connected with drive gear of oil pump 5. Planetary train is connected through carrier shaft with gearbox 9 and is set into operation by engine 11. Two-step adjustable restrictor 12 is installed in pressure main line of pump. Safety valve 14 and control cock 15 are connected to input of adjustable restrictor, being also installed in pressure main line of pump pneumohydraulic accumulator, being end member of pressure main line, is provided with three spaces. It consists of hydraulic cylinder, free piston, piston with rod, piston position regulator, oil line and oil channel. Space between pistons is filled with oil which regulates volume.
EFFECT: reduced influence of vibrations of external traction load onto functioning of machine-and-tractor unit.
FIELD: fluid-pressure actuators.
SUBSTANCE: fluid-pressure diaphragm accumulator comprises tank separated into gas and liquid spaces by the diaphragm. The top wall of the tank is provided with the unit for control of compressed air. The housing of the unit has the vertical cylindrical passage that enters the gas space of the tank and two cylindrical passages arranged perpendicular to it and receives identical valves spring-loaded to the connecting pipe faces by springs. The connecting pipes are mounted in the housing in front of the valves and overlap the nozzle opening for the inflowing compressed air into the space of the tank. The other connecting pipe receives the reducing valve and nozzle opening for discharging the compressed gas to the atmosphere. The vertical passage and longitudinal through grooves in the valve receive master cam which is connected with the diaphragm and cooperates with the stops of its valves by means of cam when the diaphragm moves outside of the specified working zone.
EFFECT: enhanced reliability.
SUBSTANCE: fluid-pressure accumulator comprises cylindrical housing provided with gas and liquid spaces separated by the fluid separator of buoy type and shutoff valve provided with the gate and seat made of truncated cone and arranged on the bottom of the fluid separator and connecting pipe for supplying fluid, respectively. The bottom of the fluid separator is made of the gate having inner conical surface. The seat has outer mating surface.
EFFECT: enhanced reliability and increased longevity.
FIELD: fluid-pressure actuators.
SUBSTANCE: supply unit comprises hydraulic accumulator, housing, and slide of the reduction valve which is mounted in the housing to define pressure, drain, and reduced pressure spaces. The slide is mounted for permitting disconnection of the pressure space from the reduction space. The hydraulic accumulator is connected with the housing from the side of the space of the reduction pressure. The safety valve is interposed between the space of the reduced pressure and the drain space. The trough opening that connects the space of the reduced pressure with the space of the safety valve is made along the axis of the slide. The safety valve is mounted in the drain space for permitting it to be pressed to the face surface of the slide by means of its spring. Between the pressure space and pressure line is the check valve that prevents the fluid to flow into the pressure line. The slide is made of the direct-action valve provided with the shank that is inserted in the drain space. The part of the slide that is opposite to the shank is diverging from the shank body and bears on the seat defined by the projections on the housing. The area of the inner section defined by the line of contact between the seat and slide of the reduction valve is greater that that of the inner section defined by the line of contact between the face part of the slide shank and safety valve.
EFFECT: enhanced reliability.
8 cl, 2 dwg
FIELD: transport engineering.
SUBSTANCE: invention can be used in transmissions of tractors and road-building machines under unstable motion conditions. Proposed transmission of vehicle has planetary reduction gear coupled with engine, pneumohydraulic accumulator, hydraulic pump mechanically coupled with one of links of planetary reduction gear. Fitted in pressure main lone are hydraulic distributor and additional three-dimensional member containing adjustable restrictor connected with variable rigidity pneumohydraulic accumulator. Drain main line of pneumohydraulic accumulator is connected through reduction valve with suction main line of hydraulic pump and drain main line of hydraulic distributor.
EFFECT: protection of engine and parts of power train from peak loads by means of reducing valve and from dynamic loads at starting from half, optimization of operation of engine, reduced specific consumption on fuel.
FIELD: installations for supplying fluid under pressure.
SUBSTANCE: method comprises determining the value of pressure in the vessel preliminary filled with explosion-proof compressible fluid and connected with the distributing device, comparing the value with that required for operation of the motor, and switching valving by the command signal to the air-operated motor of the drive. When the value of pressure in the vessel is higher or equal to the permissible value, the explosion-proof fluid is supplied from the vessel to the air-operated motor, whereas the pumped fluid is not supplied from the pipeline. When the value of pressure is lower than the permissible value, the pumped fluid is supplied from the pipeline to the air-operated motor, and the fluid is not allowed to enter the vessel.
EFFECT: improved environmental protection.
9 cl, 6 dwg
FIELD: transport engineering.
SUBSTANCE: invention can be used on vehicles operating under unstable conditions of movement. According to invention, nonlinear hydraulic damping unit is installed in transmission of vehicle. Said unit contains adjustable restrictor and least two pneumohydraulic accumulators of different rigidly. One input of restrictor is connected with main pneumohydraulic accumulator, and second input, with inputs of each additional pneumohydraulic accumulators.
EFFECT: improved reliability and increased durability of parts of power train owing to stepless change of torque transmitted from engine to wheels or tracks.
FIELD: transport engineering.
SUBSTANCE: invention relates to hydraulic systems and it can be used in different vehicles and machine-and-tractor sets operating under unsteady conditions. Proposed device contains planetary train 1 consisting of crown gear 2 and reaction member 3. Reaction member 3 is connected with gear 4 of drive of oil pump 5 and gear 6 of drive of hydraulic motor 7. Gear 4 of drive of oil pump 5 is connected with pump through overrunning clutch 8. Gear of drive of hydraulic motor 7 is connected with hydraulic motor 7 through overrunning clutch 9. Oil pump 5 is connected to suction main line 10 and pressure main line 11. Hydraulic motor 7 is connected to pressure main line 12 and return main line 13. Planetary train 1 is connected with gearbox 15 by shaft of carrier 14 and is set into motion by clutch 16 of engine 17. Adjustable throttle 18 is installed in pressure main line 11. Safety valve 19, control cock 20 and control hydraulic main line 21 with hydraulic distributor 22 are connected to pressure main line 11 before adjustable throttle 18. Device contains also hydraulic tank 26 and pneumohydraulic accumulator 27 consisting of three spaces.
EFFECT: increased efficiency of device.
FIELD: engines and pumps.
SUBSTANCE: accumulator is designed to accumulate power in hydraulic drives with alternating consumption of liquid power. The accumulator comprises case made as a cylinder sleeve with a dead spherical bottom which has a stop support end surface and a central inlet for gas supply, removable cover with an axial hole for supplying working liquid and an end support, dividing piston installed inside the case-sleeve and capable of reciprocal motion thus creating liquid and gas chambers; at that the piston includes two packing portions, mutually spaced in the axial direction of the piston and moving along the inside wall of pneumatic hydraulic accumulator, at that a threaded portion is formed on the outside surface of the case-sleeve from the open part side, this threaded portion has a directing surface and a packing device, while the medium part has heat exchanging elements in kind of a developed peripheral surface with a formation of a row of ring ribs mutually and evenly spaced on the said surface in the axial direction; the said ribs have trapezoid section and made integrally with a case-sleeve.
EFFECT: increase of operational reliability, safety, manufacturability and maintainability.
5 cl, 5 dwg
FIELD: engines and pumps.
SUBSTANCE: device is designed to accumulate power in variable liquid power consumption hydraulic drives, to damp pressure pulsations and to kill hydraulic shocks in supply hydraulic systems. The accumulator incorporates a cylindrical barrel casing, its one end being closed by a spherical bottom with a limiting thrust end face surface, a casing neck making a central gas inlet, a detachable cover furnished with an axial channel to feed working fluid and a thrust end face, a separating piston arranged inside the barrel so as to reciprocate and to form a fluid and gas chambers. Here note that the piston includes two sealing sections spaced axially apart and moving along the accumulator inner wall. Note also that the accumulator represents an integral compact unit, a module, that can be built easily and directly into the system hydraulic drive, the said module incorporating a valve unit with shutting off elements of the "valve-seat" type and detachable coupler.
EFFECT: higher reliability and safety, ease of manufacture and repair.
6 cl, 6 dwg