(57) Abstract:Usage: in hydraulic machines and mechanisms for remote control of the Executive bodies. Essence: in the valve, comprising a housing 4, a valve 5, spring return 6, the control chamber 7, the pressure reducing valve 8 with electromagnetic control, end of the cavity 9 and 10, a head 11 and the drain 12 radial hole made in the form of rows of holes. 1 Il. The invention relates to the field of automatic control, namely the elements of hydraulic circuits and can be used for remote control of the Executive bodies of various hydraulic machines and mechanisms.The known valve, comprising a housing with a radial supply channels, working taps and drain, which has a spring-loaded spool, the end of which forms with the housing a control chamber, and the spool is made with two end cavities and pressure and radial drain holes made with the possibility of connection with the supply channel, working taps and drain 
A disadvantage of the known device is that it does not provide proportional odacieuses hydraulic valve, comprising a housing with a radial supply channels, control the Executive bodies and plum, which has a spring-loaded spool with two end cavities and pressure and radial drain holes 
The disadvantage of this dispenser is that it does not provide proportional control characteristic.The aim of the invention is to improve the adjustment of the characteristics of the distributor by providing proportional supplying fluid to the actuators.This goal is achieved by the fact that the hydraulic pressure distributor openings of the valve is made in the form of at least two rows of holes along the axis of the spool with respect to the distance between the centers of the holes of the rows L1 to the hole diameter D1 (L1/D1) is equal 0,19 0,11, and drain holes made in the form of at least three rows of holes along the axis of the spool, and the diameters of the holes of the first two rows of D2 are equal, the ratio of the distance between the centers of the holes of the first two rows L2 to the diameter of these holes D2 (L2/D2) is equal 0,19 0,11, the ratio of the distance between the centers of the holes of the first and third row L3 to the diameter of the holes of the first two rows of D2 (L3/D2) is equal to 0,equal to 2.3 to 2.0.Analysis of the known solutions have not revealed the technical solutions with the stated set of essential features, which demonstrates the compliance of the claimed invention to condition patentability of "novelty". In addition, the proposed dispenser is not obvious from the prior art, i.e., involves an inventive step. Practice operating the valves suggests that the claimed solution has industrial applicability.The drawing shows the proposed hydraulic distributor.It includes a housing 1 with a radial supply channels 2, working taps 3 and drain 4, a valve 5, a spring-loaded spring return 6, the control of the control chamber 7, the pressure in which is set the reducing valve 8 with electromagnetic control. The spool 5 is made with two end cavities 9 and 10 and outlet 11 and the drain 12 of the radial holes. The discharge hole 11 made in the form of two rows of holes. The ratio of the distance between the centers of the holes of these rows L1 to the hole diameter D1 (L1/D1) is equal 0,19 0,11. Drain holes 12 made in the form of three rows of holes, the diameters of the holes of the first two rows of D2 are equal, otnoshyenii distance between the centers of the holes of the first and third row L3 to the diameter of the holes of the first two rows of D2 (L3/D2) is equal 0,59 0,49, moreover, the diameter of the holes of the third row D3 is less than the diameter of the holes of the first two rows and the ratio D2/D3 equal to 2.3 to 2.0.The valve operates as follows.When applying a control signal to the coil of the proportional solenoid, its plunger and its associated valve pressure reducing valve 8 is displaced in proportion to the current magnitude. The camera control 7 valve pressure reducing valve 8 is connected with the supply channel pressure control 13 and the pressure increases. This moves the spool 5 to the right (or left) and compression springs 6. The channel inlet 2 through the holes 11 in the valve cavity of the valve 9, the check valve 14 and opening 12 of the valve is connected with the control channel of the Executive bodies 3. At the same time, the control channel Executive bodies 3 on the other side of the valve through the holes 11 in the valve, the cavity of the spool 9, the check valve 14 and opening 12 of the valve is connected to the drain 4.The amount of flow in the lines of business of taps is determined by the amount of displacement of the spool and the pressure drop across the throttling slots.Pressure relief hydraulic valve 15 limit the pressure level in the working is>/P>Hydraulic valve, comprising a housing with a radial supply channels, management of working bodies and plum, which has a spring-loaded spool, the end of which is connected with the controls, and the spool is made with two end cavities and pressure and radial drain holes, characterized in that the discharge openings of the valve is made in the form of two rows of holes along the axis of the spool with respect to the distance L1between the centers of the rows of holes diameter of holes D1(L1/D1equal 0,19 0,11, and the drain holes are made in the form of three rows of holes along the axis of the spool, and the diameters of the holes of the first two rows of D2are equal, the ratio of rasstroena L2between the centers of the holes of the first two rows to the diameter of these holes D2(L2/D2is 0,19 0,11, the ratio of the distance between the centers of the holes of the first and third rows of L3to the diameter of the holes of the first two rows of D2(L3/D2is 0,59 0,49, and the diameter of the holes of the third row of the D3less than the diameter of the holes of the first two series and their relationship D2/D32,3 2,0.
FIELD: hydromechanical drives in aircraft control systems; control of front wheel in taxiing mode and dampening vibrations of freely oriented front wheel in dampening mode.
SUBSTANCE: proposed wheel turning mechanism includes actuator in form of hydraulic motor, distributing unit, hydraulic compensator, two-position valve communicated with distributing unit, actuator, hydraulic compensator and pressure hydraulic line. Distributing unit is made in form of swivel control spool valve and back coupling spool valve. Wheel turning mechanism includes also two safety valves connecting the hydraulic lines running to hydraulic motor and two adjustable throttle valves built in hydraulic lines communicated with two-position valve. Two-position valve has inner passage communicating the hydraulic lines running to hydraulic motor. Proposed mechanism ensures temperature compensation of working fluid in hydraulic motor chambers and replenishing the hydraulic motor chambers directly from hydraulic compensator in case of leakage; simultaneously, dampening of vibrations of freely oriented wheel is ensured at motion of aircraft on ground at working speed.
EFFECT: enhanced efficiency and reliability.
FIELD: fluid-pressure actuators.
SUBSTANCE: hydraulic distributor comprises lever-blade which embraces the flat slide and separates the internal space of the hydraulic distributor into two spaces. The lever-blade is made in block with the control shaft. The height of the bearing ring and the height of the lever-blade are related as H/h = 1.1-1.27, where H is the height of the bearing ring in mm and h is the height of the lever-blade in mm. In initial position inside the bearing ring, the lever-blade is interposed between the pressing and distributing plates asymmetrically to define sealing slots.
EFFECT: enhanced reliability and prolonged operation live.
5 cl, 7 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
SUBSTANCE: device and method are intended for hydraulic control devices operated at higher vibration and impact loads. The proposed device comprises a body with a slide valve with a stem furnished with a flat and axial slit-like slots separated by webs arranged in the slide valve opposite the intake orifices, a slide valve turn limiter, an expanding ring with opening equal to H and receiving the expanding ring retainer representing a screw. The screw head diameter D is defined by the formula D<H, the expanding ring end faces being furnished with the chamfers. The proposed method includes passing the body wall through the expanding ring opening and fitting one end of the aforesaid ring into the body inner part and the other one into the circular groove, scrolling the ring against the stop in the circular groove and till one its end gets aligned with the body slot edge. It also comprises setting the cylindrical segment on the said body slot edge till its free end thrusts against the groove, fitting into the slide valve body and locking by moving the said segment along the body slot edge and slide valve flat till it thrusts against the expanding ring. Now the aforesaid ring is scrolled till its opening gets into the position opposite to the aforesaid segment. Prior to the aforementioned operations, a threaded hole is made in the slide valve body, in the plane crossing the circular groove and flats are made of the expanding ring end faces. The opening fitted in the aforesaid position, a screw is fitted into the aforesaid threaded hole so that its head is arranged between the ring end faces. Now the screw is locked relative to the slide valve body.
EFFECT: higher reliability of assembly, vibration and impact resistance.
2 cl, 2 dwg
FIELD: engineering industry.
SUBSTANCE: hydraulic distributor is meant for manually and remotely controlled hydraulic drives, in hydraulic mechanical steering drives of aircraft follow-up control systems. Hydraulic distributor consists of a casing, supporting ring, centre drive shaft, and flat rotary valve with distribution and drain channels and with radial internal slot, which is connected kinematically to and hinged to the drive shaft. Casing is made in the form of a hollow cylinder with two annular sealing elements provided on external cylindrical surface and one end whereof is closed with a bottom with a central throat wherein there installed is profiled edge of drive shaft with the possibility of rotation movement, and end surface of open cylinder end is equipped with threaded holes uniformly arranged in a circumferential direction and meant for bolts fixing and rigidly attaching the cylinder to distribution bushing.
EFFECT: improving reliability.
3 cl, 8 dwg
FIELD: engineering industry.
SUBSTANCE: invention refers to hydraulic drive of quarry drilling machine meant for drilling rocky blast holes with changing physical properties. Device is provided with valve distribution units, each of which consists of a casing with supply, discharge and drain channels with safety and pilot-operated valves built in the casing, throttle plate and control pilots. Casing, safety and pilot-operated valves, throttle plate installed on pilot-operated valve, and pilots comprise three-line three-position working liquid distribution unit with protection of hydraulic line supplying working liquid to consumer from overloads and its free discharge in reverse drain direction with controlled actuation time of pilot-operated valve at switching off hydraulic drive thus eliminating hydraulic impacts. Working liquid for controlling hydraulic mechanisms is distributed with three units according to supply, discharge and drain lines connection diagrams, as well as valve control electromagnets actuation program.
EFFECT: providing power and speed movements of mechanisms by means of three-line valve distribution with direct protection of hydraulic lines from overloads and hydraulic impacts.
FIELD: machine building.
SUBSTANCE: hydro-distributor is used in hydraulic drives with manual or remote control. The hydro-distributor is made with a flat rotary slide and central drive in form of an integral unit-module which is easily and conveniently installed directly into the case of the hydraulic drive. Range of rotation angles of a driven shaft and slide from neutral and initial positions is considerably expanded, thus facilitating hydro-dynamic unloading. The hydraulic distributor is furnished with hinged connection of the driven shaft with the flat rotary slide in form of a crank-drive mechanism.
EFFECT: increased reliability, technical-economic properties, increased efficiency of control of slide and stability of output parametres of hydro-distributor.
4 cl, 8 dwg
FIELD: machine building.
SUBSTANCE: hydraulic valve comprising several ports communicating to relief channel (5) and slide valve (8) arranged with the possibility of displacement for control of communication between channels. Slide valve has side transverse seal (13) arranged as a whole with slide valve and engaged with relief channel. In one position valve slide (8) isolates the first port (9) from the second port (10). In another position of slide, transverse seal (13) interacts with the first port (9) and provides for communication between the first port (9) and the second port (10) by means of channel (14) arranged inside slide valve. Slide valve includes the first and second sections (8a and 8b) with various efficient area of cross section, besides at each section sealing element (16, 17) arranged as a whole forms radial seal between slide and relief valve (5).
EFFECT: using supply port, working fluid pressure is maintained outside the slide valve so that force is provided trying to close the valve as a result of various areas of cross section.
11 cl, 4 dwg
FIELD: engines and pumps.
SUBSTANCE: spool-type valve includes body with radial holes and slot, spool valve installed in the body with shank and axial slots separated with plugs installed in spool valve opposite radial holes of body and made in the form of pins and forming throttle edges with radial holes of the housing, as well as turn restrictor arranged in slot of body. Slot is made in it in the plane passing through hole axis for spool valve; turn restrictor is made in the form of cylindrical bar installed in hole of shank, made in the plane passing through spool valve axis; at that, diametre d of bar corresponds to width of slot of body, and length H of bar is determined by the formula: , where r -radius of spool valve; H - length of cylindrical bar; R - radius of body; at that, angle between slot axis and axes of radial holes in plane projection perpendicular to hole axis for spool valve corresponds to angle between axis of cylindrical bar and axes of plugs of spool valve in the same plane projection. Manufacturing method of spool-type valve includes making of slot in body, primary installation of spool valve into the body and fixture of spool valve relative to the body, making of radial holes both in the body and in the spool valve, removal of spool valve from the body and making on its belts in plane of radial holes of axial slots, installation into radial holes of spool valve of plugs, heat treatment and final machining of the appropriate cylindrical surfaces of spool valve and body, and repeated installation of spool valve into the body. Slot is made in the plane passing through axis of hole for spool valve; prior to primary installation of spool valve into the body a hole is made in spool valve shank in the plane passing through spool valve axis with diametre corresponding to width of slot in the body; process pin is installed in the above hole and it has the length exceeding spool valve diametre; at that, at primary installation of spool valve into the body the pin is installed into the body slot; process pin is removed from the hole prior to heat treatment and final machining, and cylindrical bar with diametre similar to that of process pin is installed prior to repeated installation of spool valve into the body; after that, cylindrical bar is fixed in shank of spool valve. The above features of the device and method provide alignment of spool vale in body hole at simultaneous elimination of barring of spool valve in circular direction.
EFFECT: improving sensitivity of spool-type valve.
2 cl, 2 dwg
FIELD: machine building.
SUBSTANCE: in manufacturing method of a spool-type valve for a hydraulic load-bearing element including a metal housing with a sleeve and a spool valve, the sleeve is made from leucosapphire monocrystal, its stress reaches 50÷95% of pressure in the system by its mutual heating with metal housing till design temperature and its pressing into the housing with their further joint cooling. Treatment of inner surface of the sleeve is performed after it is pressed and cooled, and a gap between the sleeve and the spool valve is made in the range of 0.2÷8 mcm. At manufacture of the sleeve and the spool valve their axes and axis 0001 of leucosapphire monocrystal is aligned between them.
EFFECT: higher control accuracy of working medium flow rate.
6 cl, 3 dwg