RU2446320C2 - Method of fabricating hydraulic booster - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: proposed method comprises fitting electromechanical transducer (EMT) in casing, orientating EMT flap flats to nozzles, driving the latter to contact with flap flats, shifting EMT flap relative to casing to position whereat flap flats are parallel about nozzle faces, compression of flap by nozzles in said position, fixation of EMT flap on casing and regulating hydraulic booster parameters by displacing nozzles relative to EMT flap at required distance. Prior to fitting EMT in casing, two pilot holes are made therein to receive pressure gages, each being communicated with appropriate face of control valve and nozzle axial orifice. Pressure gages are connected to said orifices to control preset working fluid pressure on control valve faces in adjusting booster parameters. Thereafter, gages are dismantled while pilot orifices are stopped.

EFFECT: higher maintainability and accuracy of adjustment.

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Description

The invention relates to mechanical engineering and can be used to assemble high-precision control devices operating under conditions of increased vibration loads, mainly for aviation and rocket technology.

A known method of manufacturing a hydraulic booster [1], including installing an electromechanical converter (EMF) in the housing and attaching it to the latter, as well as adjusting the speed by removing and changing the position of the nozzles relative to the EMF flap.

The disadvantage of this method is the reduced accuracy and the presence of unproductive leaks of the working fluid due to the irregularity of the nozzle placement axis and the plane of the flats of the EMF flap, due to technological errors in the manufacture of the housing and the execution of the flats of the flap relative to the axis of symmetry of the EMF.

Closest to the proposed method, the prototype is a method of manufacturing a hydraulic booster [2], which includes installing the EMF in the housing, orienting the EMF damper with flats to the nozzles, supplying nozzles to contact the flats of the damper, turning the EMF flap relative to the housing by moving the nozzles to a position at which the flats flats parallel to the ends of the nozzles, pressing the shutter with nozzles in the indicated position, fixing and fixing the position of the electromagnetic field on the housing when the shutter is pressed by the nozzles, as well as the subsequent adjustment of the parameters of the power steering put m discharge nozzles relative EMI flap the required distance.

The disadvantage of this method is the difficulty of adjusting the parameters (including speed) of the hydraulic booster, due to numerous measurements, with the connection of hydropower, after each movement of the nozzles.

The objective of the method is to provide the required speed of the hydraulic booster.

The technical result of the present invention is to improve the manufacturability and accuracy of adjusting the speed of the hydraulic booster.

The technical result is achieved by the fact that in the known method of manufacturing a hydraulic booster, including installing the EMF in the housing, orienting the EMF shutter with flats to the nozzles, supplying nozzles to contact the flats of the shutter, turning the EMF flap relative to the housing by moving the nozzles to a position at which the flats of the shutter are parallel to the ends of the nozzles , pressing the shutter with nozzles in the indicated position, fixing and fixing the position of the electromagnetic field on the housing when the shutter is pressed by the nozzles, as well as the subsequent adjustment of the hydraulic booster parameters by retraction nozzles relative to the EMF flap to the required distance, in contrast to the prototype, before installing the EMF in the housing, the latter has two technological holes for installing pressure gauges, each of which is hydraulically connected by channels to the corresponding end face of the control valve and to the corresponding axial hole of the nozzle, after attaching the EMF on the case, pressure gauges are connected to the indicated technological holes and the set pressure of the working fluid is controlled at the ends of the control valve when adjusting the parameter the hydraulic booster ditch, after the nozzles are diverted from the damper to the required distance, the pressure gauges are dismantled, and the technological holes are drowned out.

The implementation of the proposed method is illustrated using graphic materials. Figure 1 presents the structural diagram of the hydraulic booster when adjusting the parameters. Figure 2 presents the structural diagram of the hydraulic booster after adjusting the parameters.

The hydraulic amplifier shown in Fig.1-2 includes an EMF 1 with a shutter 2, on which the flats 3 are made, the housing 4, in which two nozzles 5 with axial holes 6 are placed, installed in a straight line. At the end of the nozzle 5, opposite the shutter 2, slots are made 7. The EMF 1 is mounted on the housing 4 with screws 8 and pins 9. The housing 4 has technological holes 11, each of which is hydraulically connected to the corresponding axial hole 6 and to the corresponding end of the control spool 10 Manometers 12 can be installed in the process openings 11. The plugs 13 with seals 14 close the process openings 11.

The hydraulic booster works as follows: when an electric signal is applied to the EMF 1, its damper 2 deviates by a certain angle. Lask 3 approaches one nozzle 5, reducing the throttle gap for the axial hole 6, and moves away from the other nozzle, increasing the throttle gap for the opposite axial hole 6. In this case, the parameters of the throttling slots (variable throttles) formed by the shutter 2 and nozzles 5 are regulated by the movement of the nozzles 5 relative to the housing 4 behind the slots 7. The differential pressure generated in the axial holes 6, moves the control valve 10 and the pressure is supplied to the power mechanism, the speed depends on the differential pressure e-steering. Screws 8 and pins 9 are used for fixing and fixing the EMF 1 on the housing.

A method of manufacturing a hydraulic booster is as follows. Before installing the EMF 1 in the housing 4 in the latter, two technological holes 11 are made for the installation of pressure gauges 12, each of which is hydraulically connected by channels with the corresponding end face of the control spool 10 and the corresponding axial hole 6 of the nozzle 5, the EMF 1 with the damper 2 is installed in the housing 4. The damper 2 orient the flats 3 in the direction of the nozzles 5. Then, the nozzles 5 are brought in by the slot 7 until the flats 3 of the shutter 2 touch 2, after which the shutter 2 of the EMF 1 is rotated relative to the housing 4 by moving the nozzles 5 to a position at Oromo 3 dihedron flap 2 parallel with the ends of nozzles 5, and provide a preload damper 2 nozzles 5 in the position shown. When the shutter 2 is pressed by the nozzles 5, the EMF 1 is secured to the housing 4 with screws 8, while the position of the EMF relative to the housing is fixed with pins 9. After mounting the EMF 1 on the housing 4, pressure gauges 12 are connected to the process holes 11. The parameters are adjusted — speed or time of the hydraulic booster’s net delay by diverting the nozzles 5 relative to the EMF shutter 1 to the required distance, for which the set pressure of the working fluid at the ends of the control spool 10 corresponding to the set quick rodeystviyu. After the nozzles 5 are removed from the shutter 2 to the required distance, the pressure gauges 12 are dismantled, and the process holes 11 are plugged with plugs 13 with seals 14.

The implementation of these technological holes and the ability to control the set pressure of the working fluid at the ends of the control valve according to the set speed, instead of repeatedly diverting and supplying nozzles after applying pressure, controlling the speed and comparing it with the set value, increases the manufacturability and accuracy of adjusting the speed of the hydraulic booster.

Literature

1. Ya.A. Bekirov. The technology for the production of servo hydraulic drive. M., Mechanical Engineering, 1977, pp. 179-180.

2. Patent RU No. 2293889, cl. F15B 3/00, 2005

Claims (1)

A method of manufacturing a hydraulic booster, including installing an electromechanical converter in the housing, orienting the shutter of the electromechanical converter with the flats to the nozzles, feeding nozzles to contact the flats of the shutter, turning the shutter of the electromechanical converter relative to the housing by moving the nozzles to a position where the flats of the shutter are parallel to the ends of the nozzles, pressing the shutters of the nozzles into indicated position, fixing and fixing the position of the electromechanical transducer on the housing with the nozzle pressed and the flap, as well as the subsequent adjustment of the hydraulic booster parameters by diverting the nozzles relative to the flap of the electromechanical converter to the required distance, characterized in that before installing the electromechanical converter in the housing, the latter has two technological holes for installing pressure gauges, each of which is hydraulically connected by channels to the corresponding end face of the control the spool and the corresponding axial hole of the nozzle, after mounting the electromechanical transducer n and the manometers are connected to the indicated technological holes in the casing and the set pressure of the working fluid is checked at the ends of the control valve when adjusting the hydraulic booster parameters, after the nozzles are removed from the damper to the required distance, the manometers are dismantled, and the technological holes are drowned.

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