The hydraulic

 

(57) Abstract:

The invention relates to the field of engineering, more specifically to hydraulic presses and machines. The hydraulic drive has a tank in which the upper and lower cavity of the tank is communicated through the holes drilled in the upper and lower parts of the inclined walls, and a hole in the bottom of the partitions are made in the form of a horizontal groove, and in the lower part of the tank has a sensor for the presence of water. This design of hydraulic drive provides prevention education Malovodnoe emulsion when the hydraulic actuator, the separation of oil from water and preventing contamination in the hydraulic system of the hydraulic drive. 2 Il.

The present invention relates to mechanical engineering, and more specifically to hydraulic presses and machines.

Known system circulation lubrication of the working elements of the machine containing the oil station, oil-feed to the working elements of the machine, the sump and the drive oil, together with pumping installations forming system separate oil from water (see ed. St. 1636104, B 21 J 3/00).

The disadvantage of this system is its complexity is to separate oil from water using two pumping stations, poplaw what to whom the decision is hydraulically actuated, containing a complete pump unit with control and distribution equipment, filtration hydroline, suction, pressure and case drain piping and tank separated by slanted partition into two - upper and lower cavities, interconnected through pneumonia (ed. St. 1285219, F 15 B 1/06).

The disadvantages of the known hydraulic drive are:

- the complexity of the system separate oil from water;

condensate falling from the cover of the tank, or water, in case of leakage of the oil cooler, is accumulated on the inclined partition and when the hydraulic captured suction pipe and fed to the hydraulic system of the hydraulic drive is mixing oil with water, i.e. education Malovodnoe emulsion;

- possible pollution are also stacked on the inclined partition and can also be captured suction pipe and to circulate the hydraulic system of the hydraulic drive.

The aim of the invention is the simplification of the hydraulic drive, prevention education Malovodnoe emulsion when the hydraulic actuator, the separation of oil from water and preventing contamination in the hydraulic system of the hydraulic drive.

The goal of dostigaet the equipment, suction, pressure and case drain piping and tank separated by slanted partition into two, upper and lower, interconnected cavities, the last (oral) reported to each other through the holes drilled in the upper and lower parts of the inclined walls, and a hole in the bottom of the partitions are made in the form of a horizontal groove, and the bottom cavity of the tank has a sensor for the presence of water.

In Fig. 1 schematically illustrates gidroprovod.

In Fig. 2 - section a-a in Fig. 1.

The hydraulic actuator includes a pump unit consisting of electric motor 1 and pump 2, control switchgear, conventionally shown in Fig. 1 in the form of set 3, 4 suction, discharge 5 and drain 6 pipelines and tank 7 with the side walls 8 and 9, front 10 and rear wall 11, a cover 12 and a bottom 13.

Inclined partition 14 divides the tank 7 into two cavities - the top 15 and bottom 16 of the cavity.

In the upper and lower parts of the walls with holes 17 and 18 connecting the top 15 and bottom 16 of the cavity, the opening in the bottom is made in the form of a horizontal groove formed by the wall 8 and an inclined pragoti 16 is a sensor for the presence of water 19, the locking device 20 and the cover 21 that covers the hole 22 made in the wall 8.

On the lid of the tank 12 posted by Sapun 23 and filler filter 24. In the upper cavity of the tank 7 has a cooler 25 and the locking device 26.

The hydraulic works in the following way. Formed on the cover 12 of the tank 7 and the walls 8, 9, 10 and 11, the condensate flows on an inclined wall 14 and, slipping on the last (the septum 14) through the opening 18 enters the lower cavity 16. Similarly, in case of leakage, the water from the oil cooler 25 through the opening 18 also enters the lower cavity 16.

While the oil contained in the bottom of the cavity 16, the through hole 17 is displaced in the upper chamber 15.

When the level of water in the bottom of the cavity 16 to line 2 of the sensor of the presence of water 19 the latter gives a command for stopping water supply to the cooler 25 and a ban on the inclusion of the hydraulic drive. Water is discharged through the closure device 20.

When the hydraulic actuator, when the water level in the lower cavity 16 below the line of actuation 2 sensor the presence of water 19, the inclined wall 14 prevents mixing oil with water, and butter in the cavity 16 is asserted, while z is the partition 14 through the opening 18 in the lower cavity 16 of the tank 7.

Cleaning the bottom of the cavity 16 from contamination through the hole 22 when the planned replacement of oil in the hydraulic actuator.

The hydraulic drive that contains at least one pump unit with control and distribution equipment, suction, pressure and case drain piping and tank separated by slanted partition into two - upper and lower, connected between a cavity, wherein the upper and lower cavity of the tank is communicated through the holes drilled in the upper and lower parts of the inclined walls, and a hole in the bottom of the partitions are made in the form of a horizontal groove, and the bottom cavity of the tank has a sensor for the presence of water.

 

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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.

2 dwg

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.

11 dwg

FIELD: hydraulics.

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.

3 dwg

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.

1 dwg

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.

1 dwg

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.

1 dwg

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

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