• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Dieses Versorgungssystem besitzt zwei Pumpen (4, 5), welche durch Rückschlagventile (8, 9) und Überlaufventile (10, 11) zwei Schieberverteiler (17, 19) versorgen. Zwecks Erzielung hoher Zuverlässigkeit und Energieausbeute leitet der erste Schieberverteiler (17) in seiner Arbeitslage 1 das Öl in den Arbeitsraum (Vn) unter dem Kolben eines Steuermotors (16), und der Schieberverteiler (19) leitet das Öl zu einem Rotationsverteiler (20), von wo ein pulsierender Ölstrahl in den Arbeitsraum (Vw( unter dem Teil des Kolbens mit kleinerem Durchmesser und zum Abfluss gelangt. Der Schieberverteiler (17) leitet in seiner Arbeitslage II das Öl in den Raum (Vp) über dem Kolben des Steuermotors (16) bei gleichzeitiger Verbindung des zweiten Arbeitsraumes (Vw) durch ein Schieberventil (24) mit dem Abfluss, wobei der Druckwert in dem Raum (Vp) über dem Kolben des Steuermotors (16) durch ein Überlaufventil (15) begrenzt wird. Die das Öl vom zweiten Schieberverteiler (19) zum Rotationsverteiler (20) zuführende Leitung ist über ein Absperrventil (22) und Drosselventil (23) mit der das Öl vom ersten Schieberverteiler (17) zum Raum (Vn) unter dem Kolben des Steuermotors (16) zuführenden Leitung verbunden.
    公开号:SU1050583A3
    申请号:SU803003442
    申请日:1980-11-13
    公开日:1983-10-23
    发明作者:Поляньски Збигнев；Мошуманьски Рышард
    申请人:Политехника Краковска (Инопредприятие)；
    IPC主号:
    专利说明:

    The invention relates to a hydraulic power supply system for pulsating presses, in particular for vibratory pressure presses.
    A pulsed press hydraulic powering system is known, comprising a two-stage rotary vane pump supplying oil through return and safety valves to two spool valves with electromagnetic control, from where oil is fed into the space under the piston of the hydraulic hydraulic motor and pressure multiplier. A contact pressure gauge is installed on the servomotor supply wire, which controls the spool valves of the distributors when a predetermined pressure is reached, which, after reaching a predetermined pressure, causes oil to flow into the cavity above the servomotor piston and open the cavity below the piston to the drain. As a result, the piston of the hydraulic motor moves downward according to a predetermined amplitude of the pulsation until a loop repeating signal is given through the limit switch. The power supply of the concentric punch hydraulic motor with the piston of the hydraulic engine and the piston located in the recess is realized with the help of a separate hydraulic pump together with the equipment and control system l,
    A pulsating press hydraulic system is known, comprising two hydraulic motors, a power supply unit made in the form of a pump, a check valve installed at the outlet of the pump, a hydraulic accumulator and a relief valve, with a pressure and return cavity atom of one of the hydraulic motors communicated through the distributor with the power supply unit and The discharge line and the pulsation cavity of the other hydraulic motor communicate with the power supply unit through the pulsation generator 2.
    In these systems, the creation of a pulsating jet-liquid is realized in large spaces, which requires the use of pumps with a high flow rate, makes it difficult to stabilize the parameters of the force of vibration and high energy intensity of the compression process.
     The purpose of the invention is to reduce the energy intensity of the pressing process and to improve the stabilization of the pulsating force.
    This goal is achieved by the fact that the hydraulic system of a pulsating press, containing two hydraulic motors and a power supply unit, is made in the form of a pump, a check valve installed at the outlet of the pump, an accumulator and a relief valve, while the pressure and return cavities of one of the hydraulic motors are communicated through will distribute
    A power unit and drain line, and the pulsation cavity of another engine communicates with the power supply unit through the pulsation generator, is equipped with an adjustable throttle, additional overflow valve and distributor, both hydraulic motors are made in one piece and have a two-stage piston installed in a common housing, pressure and return cavities formed from the larger diameter of the piston, and the pulsation cavity - from the smaller diameter, the power supply unit is made in the form of two pumps, one of which is communicated through the distributor with the pressing and in-cavity cavities, the other with the pulsation generator, made rotating, the pressing cavity is connected through an adjustable choke and the pulsation generator with the pulsation cavity communicated through an additional distributor with a drain line, and the return cavity is communicated through an additional overflow valve with the -line plum. In addition, the system can be equipped with a shut-off valve installed in front of the throttle.
    The task of a hydraulic supply system is the technical realization of a pulsating pressure by the method of superposition of a slowly varying pressure created in one of the working cavities of a hydraulic motor and a rapidly changing pressure created in the second starch of this hydraulic motor using a rotating distributor that is a pulsing generator. jets of fluid.
    FIG. 1 shows a system diagram; in fig. 2 is a diagram of a pulsating load with the shut-off valve closed; in fig. 3 - the same, with the shut-off valve open.
    The hydraulic power supply scheme of the pulsating press contains an oil tank 1, from which through -. Filters 2 and 3 take oil two. multi-piston pump 4 and 5 with variable performance, driven by engines b and 7 DC with a continuously variable speed.
    The change in the performance of pumps 4 and 5 and the speeds of engines b and 7, which drive pumps 4 and 5, allows continuous changes in the speed of the working movement of the press in a wide t range.
    Both pumps 4 and 5 are protected by non-return valves 8 and 9, the pressure value of the system branches fed by pumps 4 and 5 ,. limited by means of remote valves 10 and 11 and shown by gauges 12 and 13. Hydraulic accumulators 14 and 15 are connected to the injection pipes of pumps 4 and 5, the task of which is to stabilize the pressure and deliver large quantities of oil to the working spaces 16 of the return, 17 clamping and 18 pulsations of the hydraulic motor 19 through the distributors 20 and 21. The pulsation generator is made in the form of a rotating distributor 22 driven by a direct current motor 23. The system also contains an adjustable throttle 24, a shut-off valve 25. The pulsation cavity 18 communicates through an additional valve 26 with a drain line 27, and a return cavity 16 through an additional overflow valve 28 with a drain line 27. The piston 29 is made stepped.
    The system also contains a distributor 30.
    The hydraulic system works as follows.
    When the spool valves 20 and 30 are in the right (in the drawing) position, oil is supplied to the working-pressure chamber 17 under the piston 29 of the hydraulic motor 19. When the spool valve 21 is installed in the right position at the same time, the oil is supplied from the pump 5 to the active valve 22, from 1 enters the working cavity 18 pulsations under the part of the piston 29. of smaller diameter and partially to the descent into the reservoir 1. The rotor of the rotating distributor 22 is driven by a direct current motor 23 about continuously variable weakly turns. If the shut-off valve 25 is closed, the branches of the power supply system, powered by pumps 4 and 5, operate independently and a load circuit is implemented in which, with an increasing average value of the force, the amplitude of the power pulsation is constant (the process of constant amplitude of Fig. 2). When opening the shut-off valve 25, the load circuit 5 is realized, in which, with an increasing average value of the force magnitude, a simultaneous increase in the amplitude of the force pulsation occurs (the pro-proportional process, Fig. 3).
    10 The proportions of forces are set by the throttle 24. The reciprocating movement of the piston - 29 is realized after the installation of the spool valve 26 in the right position, Oil
    5 is then supplied from the pump 4 to the cavity 16 above the piston 29, and the cavity 17 under the piston 29 and the cavity 18 under the part of the piston 29 of smaller diameter are connected to the lowering in the tank 1, the pressure in the cavity 16
    0 above the piston 29 is limited by the overflow valve 28.
    Thus, the hydraulic supply system provides the opportunity. the implementation of two schemes of pulsating load when using commonly available elements of power hydraulics.
    The system provides smooth adjustment of process parameters in
    0 full range from values close to zero to nominal values. The system is characterized by high reliability, ease of maintenance, and high energy efficiency.
    5 The technical effect of the invention is to obtain a new type of pulsating presses used to form articles from metal powders, sterilized powders, and hardness, making it possible to form difficult-to-work materials and obtain products of complex formulas.
    权利要求:
    Claims (2)
    [1]
    1. HYDRAULIC PULSE PRESS SYSTEM, containing two hydraulic motors., A power unit made in the form of a pump, a check valve * installed at the outlet of the pump, a hydraulic accumulator and an overflow valve, while the pressure and return cavities of one of the hydraulic motors are communicated through a distributor with a power supply and a drain line, and the pulsation cavity of another hydraulic motor is communicated with the power supply through a pulsation generator, distinguishing me with the fact that, in order to reduce the energy intensity of the pressing process and improve stabilization ii pulsations of force. The system is equipped with an adjustable throttle, additional overflow valve and distributor, both hydraulic motors are made in one piece and have a two-stage piston installed in the common housing, the pressure and return cavities are formed on the side of the larger piston diameter, and the pulsation cavity is on the smaller diameter side, power supply made in the form of two pumps, one of which is communicated through a distributor with pressure and return cavities, the other - with a pulsation generator / 'made rotating, a cavity ( pressure connection It is possible to control the throttle and the pulsation generator with the pulsation cavity communicated through an additional distributor with a drain line, and the return cavity is communicated through an additional flush valve with a drain line.
    [2]
    2. The system according to claim 1, distinguishes itself by the fact that it is equipped with (from a safety valve installed in front of the throttle valve.
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    同族专利:
    公开号 | 公开日
    RO81558A|1983-04-29|
    DD154345A5|1982-03-17|
    BG41652A3|1987-07-15|
    PL219672A1|1981-06-19|
    PL126538B1|1983-08-31|
    EP0029223B1|1983-11-23|
    EP0029223A3|1981-10-28|
    EP0029223A2|1981-05-27|
    DE3065716D1|1983-12-29|
    HU182236B|1983-12-28|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2335412A1|1973-07-12|1975-02-06|Exnii Kusnetschno Pressowowo M|Hydraulic press with pulsating drive - high pressure feed line and outlet line connected to pulsator |
    DE2345527A1|1973-09-10|1975-03-20|Schirmer & Plate|HORIZONTAL HIGH SPEED FORGING PRESS|DE3205740C2|1982-02-18|1986-02-20|Max Refflinghaus Maschinen- u. Werkzeugfabrik GmbH & Co KG, 5657 Haan|Wire bending machine|
    EP0103727A1|1982-09-02|1984-03-28|Inventio Ag|Synchronization control apparatus for the electro-hydraulic drive of a press brake|
    DE3419689C2|1984-05-25|1986-11-27|Mannesmann Rexroth GmbH, 8770 Lohr|Device for supplying pressure medium to a hydraulic cylinder|
    CN103286251A|2013-05-17|2013-09-11|天津市天锻压力机有限公司|Oil supply system of hydraulic forging press|
    CN104353770B|2014-10-23|2016-03-23|湖南明诚机械制造有限公司|Hydraulic hammer stake machine high frequency is hammered stake hydraulic system into shape and is beaten hammer inserted valve|
    CN106996071B|2017-03-20|2019-06-11|温州大学|A kind of gas-liquid mixed excitation system of cement pavement rubblizing apparatus|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    PL21967279A|PL126538B1|1979-11-15|1979-11-15|Pulsatory press hydraulic supply system|
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