Electrohydraulic vibrator

FIELD: machine building.

SUBSTANCE: electrohydraulic vibrator includes a back-and-forth pump, suction and discharge hydraulic lines with valves of direct and return action, which are installed in them, a power hydraulic cylinder and an electromechanical converter. Electromechanical converter includes an electric motor, a multiplier, at the outlet shaft of which an eccentric cam mechanism is fixed, which contacts a plate-type pusher pressed with a return spring installed on a pump stock.

EFFECT: improving positioning accuracy at static and dynamic loads and maintaining linear dependence of amplitude of vibrations on the frequency specified with the electric motor; improving reliability and durability of electrohydraulic vibrator.

2 cl, 1 dwg

 

The invention relates to a vibration technique and can be used in engineering, construction, chemical and other industries.

The wide use of electro-hydraulic vibrators in mechanical engineering and other industries is determined by a number of other advantages over other types of vibrators and above all the possibility of obtaining a great deal of effort and power in limited sizes.

Energy effect of electrohydrodynamic is that with minimal force applied to the shaft of the pump, the force on the piston, the piston of the working cylinder increases several times, depends on the ratio of the area of the piston pump and the piston of the working cylinder.

Known hydroelectricpower consumable type, including a pumping station, pipelines, electrotherapeutical spool type, power cylinder [Kumabe D. Vibration cutting: TRANS. with YAP. M.: Mashinostroenie, 1985, s-153].

The disadvantage of this vibrator are large friction force in the process of starting.

Known electro-hydraulic vibrator, taken as a prototype, containing a reciprocating pump, the suction and pressure hydroline with installed valves direct and reverse action, the power cylinder, the Electromechanical transducer [Loncarevic IFS., Frolov K.V. Theory of vibration engineering and technology. M.: Nauka, 1981, s.226-228].

The disadvantage of this drive is the inaccuracy of the positioning rod of the power cylinder.

The problem to which the invention is directed, is to improve the accuracy of positioning the rod-piston, reliability and durability of the electro-hydraulic vibrator.

This task is solved in that the electro-hydraulic vibrator contains a reciprocating pump, the suction and pressure hydroline with installed valves direct and reverse action, the power cylinder, the Electromechanical transducer, comprising an electric motor, the multiplier on the output shaft of which is fixed an eccentric Cam mechanism in contact with the disc pusher is pressed by a return spring mounted on the rod of the pump, and the piston rod of the reciprocating pump can be made with the possibility of joining rod optional reciprocating pumps.

The Electromechanical transducer comprising an electric motor with a multiplier making it easy to adjust the working frequency of the impact and its efforts, expanding the technological capabilities of the vibrator.

The use of a Cam mechanism with disc pusher and p is oinoi his return allows you to adjust the amplitude of the impact of continuous tracking over the full period of rotation of the Cam.

Connection Poppet plunger rod of the pump allows you to send periodic impacts on the hydraulic part of the vibrator with the increasing efforts of vibration exposure.

The connection rods of the several reciprocating pumps provides an increase in the amplitude of fluctuations at times, in proportion to the number of connected reciprocating pumps.

The invention is illustrated in the drawing, which shows a functional diagram of an electrohydraulic vibrator.

Electrohydraulic vibrator includes a motor 1, a multiplying gear pair multiplier of 2, the output shaft of which is fixed a Cam mechanism 3 which is in contact with the disc plunger 4 is pressed by the return spring 5 mounted on the rod 6, which is fixed to the piston 7 mounted in the pump housing 8. The pump chamber 8 is connected through hydroline and check valves 9 chambers of the power cylinder 10, which houses the piston, the piston 11. Chamber of the power cylinder 10 is connected through a hydroline and check valves 12 with the pump 8. On the rod 6 can be sequentially installed pumps 13 and others, which are by construction identical to the pump 8, and their inputs and outputs connected in parallel to the pipeline pump 7.

Use a pump with a reciprocating action as distribution is the appropriate fields of the working environment increases the static and dynamic accuracy of processing an input signal and provides a linear dependence of the amplitude of the oscillations of the piston rod of the working cylinder on the frequency and increases the efficiency.

Electrohydraulic vibrator works as follows. Before turning on the motor 1 working cavities of the power cylinder 10 and the pump 8 of the hydroline fill the working environment, for example water, and seal. Next include the motor 1, the motion of the Cam mechanism 3 is ascent to the highest point, is equal to the stroke of the piston 7 and equal to the eccentricity "e".

The working environment under the action of the piston 7 from the left cavity of the pump 8 is pumped into the left chamber of the power cylinder 10 through the check valve 12 and moves the piston, the piston 11 to the right. Working environment - water from the right cavity of the power cylinder 10 is pumped into the right cavity of the pump 8. Next, when turning in the same direction as the piston 7 with the shaft 6 is returned to its original position and the plungers are lowered by the value of "e", that is, the piston performs a reciprocating movement. The flow from one pump cavity into the cavity of the power cylinder is repeated with the frequency of rotation of a Cam mechanism 3.

The frequency of vibration of a vibrator depends on the frequency of rotation of the motor 1 and the gear ratio multiplier 2, and the oscillation amplitude is the magnitude of the eccentricity of the Cam mechanism 3 and the amount of displacement of the working environment and cavities of the pump.

When the rod 6 is consistently reinforce the ASAS 13 to increase the amplitude of oscillation of the piston, the piston 11 of the working cylinder 10, the volume of the pumped working fluid - water pumps for one revolution of the Cam mechanism 3 is increased in 2 times.

If necessary, increase the amplitude of oscillation of the vibrator, the number of series-connected pumps can be increased to n times.

1. The electrohydraulic vibrator, containing a reciprocating pump, the suction and pressure hydroline with installed valves direct and reverse action, the power cylinder, the Electromechanical transducer, wherein the Electromechanical transducer includes a motor, the multiplier on the output shaft of which is fixed an eccentric Cam mechanism in contact with the disc pusher is pressed by a return spring mounted on the rod pump.

2. The vibrator according to claim 1, characterized in that the rod of the reciprocating pump is made with the possibility of joining rod optional reciprocating pumps.



 

Same patents:

FIELD: machine building.

SUBSTANCE: invention refers to automation devices of production process in various industries, and namely to distributing elements of hydraulic impact devices (HID) for control of working fluid flow between sections and units of the hydraulic system. HID distributor includes a housing with a control channel and channels for supply and discharge of working fluid, a control chamber and a shutoff control member. In the housing there is a calibrated throttle, through which restricted amount of working fluid has access from the control channel to the control chamber. HID distributor is equipped with a stepped valve for control of supply of working fluid to the control chamber, which is spring-loaded and interconnected through a throttle via a step of smaller diameter to the working fluid supply channel. In its initial position, the larger step of that valve closes the access of the working fluid to the control chamber.

EFFECT: improving operating reliability owing to damping the action on the shutoff control member in initial position of pressure pulse of hydraulic impact wave generated at supply to the distributor through the control channel of working fluid flow from a discharge line of HID at impact.

1 dwg

FIELD: oil and gas production.

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3 cl, 2 dwg

FIELD: machine building.

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2 cl, 1 dwg

FIELD: machine building.

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FIELD: machine building.

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1 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to devices for generation of vibrations in flowing medium stream and can be used in chemical, mining and other branches of industry in processing of single-phase or multi-phase media in order to mix them and disperse phases. Hydrodynamic generator for processing of flowing media includes case, jet-forming nozzle and cantileverly fixed in case opposite to medium direction plate-resonator. Case is made in form of tube. Plate-resonator has two protrusions, arc-like bent to opposite sides in such way that they tightly adjoin internal tube surface forming plate fastener.

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3 cl, 7 dwg

FIELD: engineering industry.

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4 cl, 4 dwg, 1 ex

Flow pulsator // 2327119

FIELD: generators.

SUBSTANCE: invention is related to generators of alternating flow and may be used in metrological certification of blood pressure and heartbeat frequency measuring devices. Flow pulsator consists of stator with outlet windows, in which detachable cylindrical hollow rotor is installed coaxially to outlet windows, being connected to motor shaft. Outlet windows of rotor n and stator m are installed in different levels and have the shape of polygons. Total number of stator windows does not exceed (n ≥ m) or more than (m > n) total number of rotor windows.

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2 dwg

FIELD: hydraulic systems.

SUBSTANCE: invention relates to distributing elements of hydraulic impact devices used to control working liquid flow between sections and sets of hydraulic system. Proposed distributor of hydraulic impact devices has housing with control channel and working liquid inlet and outlet channels, control chamber from side of control channel, shutoff-and-control element with stepped shank from side of control channel and installed in housing for pressing up in initial position and longitudinal displacement for changing direction of working liquid flow. With shutoff-and-control element on initial position, larger diameter step of said shank cuts off working liquid flow delivered through control channel to smaller diameter step. Said element is either furnished with accumulator connected by channel in housing with control chamber provided that before opening of access for working liquid flow delivered to control channel to smaller diameter shank, access of working liquid from said step is provided through channel in shank to channel in housing to remove liquid; or calibrated restrictor is made in housing through which limited amount of working liquid can pass from control channel into control chamber provided that with shutoff-and-control element in initial position, control channel is closed by said element and, before its opening, access of working liquid from smaller diameter step of shank through channel in shank to channel in housing is provided for its removal; or shutoff-and-control element is provided with shank from side of control channel and calibrated restrictors are made in housing and in shank of shutoff-and-control element provided that limited amount of working liquid can pass through calibrated restrictor in housing from control channel into control chamber and with shutoff-and-control element in initial position, control channel is closed by said element and as long as it remains closed, limited amount of working liquid from control chamber to channel in housing can pass for removal through calibrated restrictor in shank.

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4 cl, 3 dwg

FIELD: process engineering.

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FIELD: process engineering.

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4 cl, 4 dwg

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6 dwg

FIELD: process engineering.

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EFFECT: expanded operating performances, higher quality and efficiency, reduced costs.

13 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be used for deflashing, chamfering and planar machining at milling, multiposition and hybrid machine tools. Proposed method comprises revolving needle cutter and feeding workpiece in lengthwise and crosswise directions per every double stroke of machine tool table. Workpiece is additionally subjected to torsional vibrations by device with its case top provided with washer made from antifriction material that doubles as antifriction bearing. Round plate is fitted on said washer by flexible and rigid rings and provided with dead hole to receive rotor journal to run in bearing. Said journal is offset relative to main journals. The latter run in bearings of rotary air engine rotor. Stator is arranged at case center and provided with chamber to feed compressed air acting on rotor vanes.

EFFECT: expanded operating performances, higher quality and efficiency, reduced costs.

13 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine building, particularly, to machining of hard-to-machine metals and alloys. Proposed device comprises case with its bottom to be secured to machine table and its top to support billets to be machined. Electromagnetic rectangular plate is flexible arranged on strips from antifriction material atop said case to support billets. Bracket is arranged on bottom face of said plate and rigidly connected with waveguide incorporated with mechanism of impulse-oscillatory loading of billets made up of hydraulic pulse generator. Hammer of the latter is arranged to act on waveguide to generate the plate crosswise oscillations. Guide plates with adjusting screws are used to orient plate in horizontal direction. Mechanism of pulse-oscillatory loading is provided with screw coil compression spring to return plate with billets, bracket and wave guide into initial position.

EFFECT: higher quality and efficiency.

6 dwg

FIELD: oil and gas industry.

SUBSTANCE: test method of operability of hydromechanical generators and bench for objective evaluation of wave action of pressure oscillations on oil displacement from productive formation model is described. Method consists in pumping of the whole volume of displacement fluid through the main line of the bench, in which there installed in series is oscillation generator with electric drive, productive formation model with oil content and graduated measuring cylinder for collection of additional amount of displaced oil. Method allows carrying out the tests of flow-through hydrodynamic generators of pressure oscillations in fluid flow, and interruption of fluid pumping through generator shall be performed by means of electric drive. The new feature is pumping of the whole volume of displacement fluid through the interrupting generator assembly. The bench includes the following: forced fluid supply system, main line with pressure sensors and pressure pulsations; pressure oscillation generator and model of productive formation, which represents hollow cylinder filled with porous medium containing residual oil; in the main line of the bench there installed in series is pressure oscillation generator and formation model, and pressure oscillation generator has electric drive which is connected through reduction gear to the shank of rotating shaft; at that, formation model is installed horizontally.

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2 cl, 1 dwg

Vibration honer // 2440884

FIELD: process engineering.

SUBSTANCE: invention relates to cutting of hard-to-process metals and may be used in finish diamond-abrasive machining, for example, honing of bores. Proposed device comprises body and hone holders accommodating diamond external abrasive hones. Sleeve-like body is rigidly fixed on spindle mandrel and provided with bored cylindrical holes arranged along its periphery to accommodate reciprocating plungers. Every plunger is equipped with pivot arranged at its center to support rocker with coil compression springs to create radial operating pressure of hone holder on machined surface. Plungers with rockers and bar holders are subjected to lengthwise vibrations by compressed air feed through manifold and channel in pulley hub into cylinder head section. There are orifices provided to release compressed air into atmosphere and compression spring is arranged at cylinder bottom. Plunger goes down unless cylinder cross section is aligned with said orifice and is forced up by compressed spring. Plunger vibration frequency is controlled by pulley rpm.

EFFECT: higher precision, efficiency and quality, simplified design.

4 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to cutting of hard-to-process metals and may be used in finish diamond-abrasive machining, for example, honing of bores. Honing is performed by device comprising body and diamond abrasive hones that reciprocate and rotate. Sleeve-like body is rigidly fixed on spindle mandrel and provided with bored cylindrical holes along its periphery. Said holes accommodate plungers to reciprocate therein. Every plunger is equipped with pivot arranged at its center to support rocker with coil compression springs to create radial operating pressure of hone holder on machined surface. Plungers with rockers and bar holders are subjected to lengthwise vibrations by compressed air feed through manifold and channel in pulley hub into cylinder head section. Plunger goes down unless cylinder cross section is aligned with said orifice and is forced up by compressed spring. Plunger vibration frequency is controlled by pulley rpm.

EFFECT: higher precision, efficiency and quality, simplified design.

4 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to cutting of hard-to-process metals and may be used in finish diamond-abrasive machining, for example, honing of bores. Pneumatic generator comprises case rigidly fixed on spindle and diamond-abrasive bar holders arranged outside. Said case has holes bored in lengthwise direction along its periphery to accommodate spring-loaded plungers reciprocating therein. Every plunger has a hinge at its center with rocker supporting helical coil compression springs on its ends to load bar holder to machined surface. Plungers with rockers and bar holders are subjected to lengthwise vibrations by compressed air feed through manifold and channel in pulley hub into cylinder head section. There is a bore to release compressed air into atmosphere in plunger down travel. Also, plunger vibration frequency may be adjusted by pulley rpm.

EFFECT: higher precision, efficiency and quality, simplified design.

4 dwg

Pulsator // 2245744

FIELD: power production, boiler technology, possibly development, manufacture and usage of pulsators preventing formation of deposits and scale in equipment of central heating stations, boiler rooms, namely on surfaces of heat exchanger and boilers.

SUBSTANCE: pulsator includes housing having inner cavity and ducts. Inner cavity is divided by means of perforated partition by two parts. One part of inner cavity is communicated with one duct used for supplying steam to inner cavity of pulsator. Other part of inner cavity is communicated with two ducts; first duct is used for supplying water to inner cavity of pulsator; second duct is used for discharging water or water and steam out of inner cavity of pulsator.

EFFECT: simplified reliable operation of pulsator having reduced mass due to absence of moving members in its construction.

14 cl, 2 dwg

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