The valve is designed to control the flow of the working fluid in the hydraulic systems of mobile machines. Proportional valve contains a valve, controlled with one hand proportional electromagnet, and the other return spring moving in a cast housing having a Central macropodidae groove, two outer grooves, connected to each other, two cylinder channel, two cavity under the ends of the valve, connected between a drain hole in the body of the valve made an extra hole connecting the Central macropodidae groove with a drainage hole. The technical result is to enhance the functionality of the valve. 10 Il. The invention relates to hydraulic engineering, in particular to the control of hydraulic machines with proportional control with DN DN=6 mm, and can be used in various electro-hydraulic actuators fixed systems and mobile machines.Known for proportional valves with nominal diameter DN=6 mm type RSE manufactured GSTB HA, Gomel. Hydrauli the first valve with a nominal diameter of DN=6 mm type B, made Ulyanovsk ON Hydroaparat .Also known a number proportional valves foreign manufacturers (type KDG4V, KSDG4V firm "Vickers", type S6UP firm "Herion", type 4 WRE, 3 DREP firm "Mannesman Rexroth") , .As a prototype can be considered, for example, three-position valve 4 WRA.6...EX company "Maimesman Rexroth" .In the design - prototype  the housing 1 has five macropodidae grooves: the Central groove 2 - channel R for the supply of the working fluid, two at 3 and 4 connected together inside the case) - channel drain T and two cylinder channel and the grooves 5 and 6 respectively. Cavity Y 7 and 8 connected between a drain hole D 9, are used for the unloading valve 10, that is, create it ends the same pressure. When applying for the winding of the electromagnet 11 signal control rod 12 moves the valve 10 in proportion to the control signal. When removing the signal valve 10 is moved to the initial position under the action of the return spring 13, while it remains in one of the working positions of the valve.The drawbacks, , ,  and prototype  should be attributed to the fact that typical design of cast iron housings 2 positive channels is not possible to implement complex 4-point scheme.The aim of the invention is to enhance the functionality of the valve due to the realization of the chassis 3-way valve 4-way control schemes while maintaining the overall dimensions and weight and size parameters.To achieve this goal in the proportional valve containing a valve, controlled with one hand proportional electromagnet, and the other return spring moving in a cast housing having a Central macropodidae groove, two outer grooves, connected to each other, two cylinder channel, two cavity under the ends of the valve, connected between a drain hole according to the invention, the casing is made an extra hole connecting the Central macropodidae groove with a drainage hole.The technical result in the implementation of a complex 4-point schemes on the basis of the building 2 - and 3-way proportional valves which seeks to ensure control of the Executive bodies of the hydraulic drive (for example, a reversible pump for reversing the movement of the working bodies, to perform other operations in sooi" feed pump or for unloading control system in the absence of the control signal.In the study of the distinctive features of the proposed proportional valve does not identify any known technical solutions that implement the 4-way control scheme using standard case design, for example, three-position valve, therefore, the claimed technical solution meets the criteria of the invention of "novelty" and "inventive step".In Fig. 1 illustrates a typical design 2-way proportional valve, Fig. 2 - its hydraulic diagram of Fig. 3 - three-position valve (prototype) of Fig. 4 - its hydraulic diagram of Fig. 5 shows the inventive proportional valve of Fig. 6 - its hydraulic diagram of Fig. 7, 8, 9, 10 shows four working positions of the inventive valve.Declare proportional valve (Fig. 5) contains a slide valve 1 is driven on one hand by the pusher 2 is proportional electromagnet 3, and on the other the return spring 4, moving in a cast iron cast housing 5 having five macropodidae grooves: the Central groove 6 - channel drain T, two outer grooves 7 and 8 (the joint between estwenno. Cavity Y 11 and 12 connected between a drain hole D 13 serve for the discharge of the valve 1. For more entered the hole About 14, plugged tube 15 connects the Central macropodidae groove T 6 with drain hole D 13.Valve with proportional control works as follows. When de-energized proportional solenoid valve is in position 4 (Fig. 7), which implements 4-I, additional position. When applying for a proportional solenoid control signal, the valve is moved from position 4 to position 2 (Fig. 9). Further control valve and implementation positions 1 and 3 (Fig. 8, 10) are achieved by the reduction or increase of the control signal.The connection of the drain channel T with cavities discharge, increased number macropodidae grooves to 7 allow by moving the spool to receive the connection of the respective channels R-a, R-b, a-T,-T for the implementation of a complex 4-point schemes of proportional valves.The inventive valve is tested and used in the hydraulic system control machine harvesting complex, produced by JSC "KEMZ", , Carpet.Sources of information 1. Ka>/p>3. C. K. Sveshnikov. Hydraulic equipment. International directory, RIA, 19954. Catalogue "Proportional-, Regel - und Servoventil, Elektronik-Komponenten und System", the firm "Mannesman Rexroth", 19935. CD-ROM Directory "Hydraulik-Komponenten für stationaere mobile und Anwendungen", Rexroth Hydraulics, 2000
ClaimsProportional valve containing a valve, controlled with one hand proportional electromagnet, and the other return spring moving in a cast housing having a Central macropodidae groove, two outer grooves, connected to each other, two cylinder channel, two cavity under the ends of the spool, interconnected drainage hole, characterized in that the housing of the valve made an extra hole connecting the Central macropodidae groove with a drainage hole.
FIELD: production of hydraulic distributor for electro-hydraulic amplifiers.
SUBSTANCE: the hydraulic distributor is intended for use in electro-hydraulic amplifiers and is supplied with the drive of a sliding valve made in the form of a turning electrical motor, on the shaft of which there is a cantilever eccentric with a ball bearing. On the sliding valve there is a groove for interaction with the bearing and the shaft sealed with a reinforced sealing ring.
EFFECT: the invention ensures increased efficiency of the hydraulic distributor operation.
2 cl, 4 dwg
FIELD: fluid-pressure actuators.
SUBSTANCE: system of hydraulic valves comprises first actuating connection and the second actuating connection which are connected with the hydraulic consumer, system of supplying connections that has the connection with the pressure source and connection with the vessel, first valve system that disconnect the system from the pressure source or controllably connect it with the first actuating connection or the second actuating connection, second system of valves that disconnects the system from the vessel or connects it controllably with the first actuating connection or the second actuating connection, and control unit that controls the first valve system and second valve system. At least one valve system is provided with the pickup of the extent of opening connected with the control unit that controls the valve system depending on the signal from the pickup of the extent of opening and reference signal.
EFFECT: enhanced precision of control.
15 cl, 3 dwg
SUBSTANCE: device comprises sleeve with step outer side and axial passage that receives two cylindrical collars of the step slide valve whose third collar is provided with face stop. The outer side of the smaller diameter of the sleeve is provided with the first and second grooves interconnected through the axial passage. The outer surface of greater diameter of the sleeve has two chamferings whose surfaces are connected with the axial passage through openings. The first collar is arranged near the face of the slide valve opposite to the stop to define a control chamber, is provided with two flat chamferings, and is made for permitting cooperation with the ports of the first groove in the sleeve. The second collar is separated from the third collar by a groove and is made for permitting cooperation with radial openings of the sleeve. The first groove is open from its face, and the ports of the second groove are connected with the space defined in the axial passage between the collars of the slide valve.
EFFECT: enhanced efficiency.
6 cl, 10 dwg
FIELD: engines and pumps.
SUBSTANCE: method and device are intended for control system operated by gaseous working medium. The method consists in the following. With the switched off electromagnetic drive windings, the armature is set at its travel centre, and, during drive operation, electromagnetic forces are induced on the armature each side in turn. Here, air being distributed is forced to blast the electromagnetic drive stator and windings to create equal in size and opposite-sign forces acting on the armature along its travel. The distributor is made up of two concentrically located cylinders jointed by a connector in their central zone. Coils with windings are arranged between cylinders on both sides of the connector with a gap for air to pass through. The smaller diameter cylinder accommodates a cylinder rod making a dual-action armature with blind holes on its every end to accommodate the springs resting against the covers, thus retaining the rods with an equal clearance relative to covers. The cylinders walls have two rows of inclined holes symmetric relative to the connector jointing the cylinders.
EFFECT: lower electric power consumption.
2 cl, 1 dwg
FIELD: engines and pumps.
SUBSTANCE: valve has a body with the feed pressure supply channel, an outlet channel, a controlled pressure outlet channel and an inner boring accommodating a control valve with an inner channel with throttle communicating the inlet channel with the left-hand space formed by the body boring and the left-hand end face of the said control valve and communicating with the outlet channel via the control valve, and a channel communicating the outlet channel with the right-hand space formed by the body boring and the control valve right-hand end face and containing a return spring acting on the slide valve. The slide valve incorporates an additional spring-loaded channel communicating the right-hand space with the outlet channel, while the channel communicating the outlet channel with the right-hand space accommodates an additional throttle. In compliance with the other valve version, the right-hand space can communicate via the spring-loaded valve with the outlet channel. Here the additional spring-loaded valve is arranged inside the slide valve or in the main valve body.
EFFECT: smooth engagement of gearbox friction gear wheels.
4 cl, 5 dwg
FIELD: machine building.
SUBSTANCE: invention relates to hydro pneumatic automatic control devices and can be used in aircraft hydraulic control systems. The proposed valve incorporates a body with the pressure, control and drain channels separated by two cups arranged in the valve body and provided with aligned grooves and holes. A push rod is arranged in the said grooves to move therein. The aforesaid holes in the cups are made on both sides of the push rod to contact, by their outer edges, with the ball-like shut-off members. One of the said balls, on the drain side, interacts with a spring-loaded rod moving inside the electromagnetic drive stator. Note that in one position of the aforesaid rod, the control channel communicates with the drain line while, in the other position, it communicates with the pressure channel. There is a spring-loaded plunger fitted in the valve body of the pressure side, its end face interacting with the shut-off member on the aforesaid side. Cylindrical collars are made on the outer surface of every cup on the side of holes and aligned with them. One of the said collar accommodates on the drain side a sleeve locked in a blind groove aligned with the sleeve through hole receiving a ball. The collar of other cup, but on the pressure side, accommodates a similar sleeve with the ball.
EFFECT: higher valve tightness.
FIELD: machine building.
SUBSTANCE: distributor is designed for supply and withdrawal of fluid into cavity of hydraulic engine and for protecting it from overloads, for locking cavity and for maintaining suspended load, for replacing load from cavity of hydraulic engine and damping to facilitate uniform motion at any specified speed. The distributor consists of a rectangular metal case of platen mounting with bypass, supply and drain lines, of a safety valve with a pilot, of a controlled valve with a pilot and two back valves each including a bush-seat, a ball and a spring. Also a safety valve is installed into the end of the case along its lengthwise axis; the valve is equipped with two control valves and the pilot. The control valve with the pilot is installed perpendicular to lengthwise axis of the case. Notably, under-valve cavity of the safety valve is connected with a side surface of the gate of the control valve and the drain line via a channel; the supply line is connected to the under valve cavity of the control valve; the drain line is connected with the side surface of the safety valve, while the back valves are installed in withdrawal channels of drain and supply lines; the back valves shut off the channels pressure tight from overflows of fluid from one line to another.
EFFECT: facilitating multi-functionality of device, simplicity of fabrication, high maintainability, easy control and high reliability.
FIELD: machine building.
SUBSTANCE: in amplifier there is implemented jet amplifier stage with two pressure nozzles and correspondingly with two receiving channels connected by means of their hydraulic lines with sub-end cavities of slide. The jet amplifier stage consists of two cylinder elements coaxially and with a gap installed in a case. A deflector gate of an electro-mechanic converter is arranged in slots in the cylinder elements from the side of ends facing each other. The pressure nozzle and the receiving channel are coaxially arranged in the slot of each element from the side of cylinder surface. Threaded sleeves are screwed on threaded ends of the cylinder elements from the side opposite to the slot. With their external thread the sleeves are screwed into the case. Also thread in the case, on the cylinder elements and correspondingly in the threaded sleeves has different pitch.
EFFECT: improved processability of fabrication, simplification of jet amplifier design and facilitation of its adjustment with high accuracy.
FIELD: machine building.
SUBSTANCE: two-position hydraulic distributor with pulse control refers to hydraulics and can be used as hydraulic equipment of mobile machines. A valve of the hydro-distributor slides along a guide block and is fixed in two points, when control pulse electric signal is transmitted to electro-magnetic valve.
EFFECT: reduced dimensions and weight of electric magnet, reduced power consumption, increased reliability of hydraulic distributor operation.
FIELD: engines and pumps.
SUBSTANCE: flow control and control method of the control is intended for hydraulic system of working machine. Control includes housing with inlet hole and outlet hole, main bypass valve located inside the housing between inlet and outlet holes and including the forward end and hollow end. Valve has the possibility of being moved between open position in which the liquid flows from inlet hole to outlet hole, and closed position in which the liquid flow between inlet and outlet holes is locked. In addition, control has auxiliary valve having the possibility of being moved so that they can selectively attach hollow end of the main bypass valve to the drain, thus influencing the movement of the main bypass valve between open and closed positions. Besides, flow control includes solenoid mechanism intended to move auxiliary valve. Position of auxiliary valve depends on liquid pressure in inlet hole.
EFFECT: higher reliability of hydraulic system.
10 cl, 3 dwg