• 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:
    The safety valve is for mechanisms driven by a medium under pressure, particularly a press brake or clutch. Two individual valves in a housing are connected in parallel and typically solenoid operated, and each has a piston and a plug controlling the connection between the inlet, the mechanism served, and the return. The two plugs are each guided in a bore in the housing and the bores are interconnected by two passages crossing over each other. Each passage can run from the upstream end of one bore to the downstream one of the other, to a point short of the seat against which the respective plug works.
    公开号:SU946413A3
    申请号:SU782656850
    申请日:1978-09-06
    公开日:1982-07-23
    发明作者:Руксер Эрих；Отт Хельмут
    申请人:Техноматик А.Г.(Фирма)；
    IPC主号:
    专利说明:

    The invention relates to mechanical engineering and may find application for. clutch control systems and press brakes.
    A device comprising PA-5 are parallel installed in one housing two valves, each consisting of a piston control chamber which communicates through a valve with electromagnetic drive with the medium supply channel 10 and the atmosphere, a gate razobshayuschogo flow channels and exhaust valve and whose input communicated with the feed channel, and the output with the flow channel £ 1J.
    The disadvantage of this apparatus 15 wish to set up yav- insufficient reliability due to the possibility of accidental actuation when signals on one of the electromagnets actuator.
    The aim of the invention is to increase 2 on the reliability.
    This goal is achieved by the fact that in the valve spool of each valve there is a blind bore connected with the feed channel and an annular groove adjacent to the aforementioned bore, and two cross channels are made in the body connecting the input of one valve with the outlet of the other with an annular groove open valve position.
    In FIG. 1 shows a switchgear in a closed position; in FIG. 2 - the same in the open position; in FIG. 3 - the same, when only one electromagnet is triggered; in FIG. 4 constructive version of the device with pneumatic switches; in FIG. 5 - switchgear; due to the membrane mechanism for controlling the position of the spools; not fig. 6 the same with the mechanism for monitoring the pressure of the medium in the tap channel.
    In the housing 1 of the device, two valves are installed in parallel, each consisting of a piston 2, the control cavity 3 of which is communicated through a distributor 4 with an electromagnetic actuator 5 via * on the channel 6 with a supply channel 7 and an atmosphere: a swarm, a shutter 8, separating the channels ; flow rate 9 and output 10, · and spool 11, the input of which is connected to the supply channel 7, and the output - to the flow channel 9. In each spool 11 there is a blind cavity 12 in communication with the supply channel 7, and an annular groove 13 in communication with the bore 12. In the housing 1, two cross channels 14 and 15 are made, connecting through the annular groove 13 the input of one, the spool 11 with the output of the other. The device can be equipped with inductive or capacitive sensors 16, the device is equipped (Fig. 4) with two pneumatic switches 17,. containing a sensing element, for example, a membrane kinematically connected 5 with the electrical switches 18. One side of the switch through the channel 19 is in communication with the supply channel 7, and the other. through channel 20 - with one of the cross channels 14 and 15. In channels 14 and 1520, an inductor 21 can be integrated.
    One of the sides of the switches 17 (Fig. 5) is communicated by channel 22 and channels 23 and 24 with flow channels 9 and outlet 10, respectively. Here, the electric switches 25 track the position of the membrane 2Θ. A throttle valve 27 can be installed in the channel 23. One of the sides of the switches 17 (Fig. 6) is communicated by the channel 28 only with the flow channel 9. In the housing 1, annular channels 2 9 can be made.
    In the third embodiment, the valve is equipped with capacitive or induction sensors 21, interacting with the spools 5.
    The safety valve operates as follows
    In case of filaments, the control cavities 3 of the yen are connected with the atmosphere. The pressure of the medium acts on the spools 17 and they, together with the shutters 8 and pistons 2, are in the highest position, while the flow channel 9 is connected to the exhaust channel 10, the spools 11 overlap the cross channels 14 and 15 with their cylindrical surface .
    When a signal is applied to electromagnetic • drives 5, of the distributor 4, overcoming the resistance of the springs, they move and open the channel 6. The working medium under pressure enters the control10.
    the absence of a signal on the electromag- 40 actuators 5 distributors 4 under the action of the springs in the lower position and block the channel 6, closing the cavity 3 of the pistons 2, the diameter of which is larger than the diameter of the spools 11. Under the influence of the difference, the forces acting on the pistons 2 and spools 11, they move down until the valves 8 disconnect the flow channel 9 from the exhaust channel 10. The working medium from the supply channel 7 through the bore 12, the annular groove 13 and the cross channels 14 and 15 enters the flow channel 9.
    In the event that the signal is transmitted to only one of the electromagnetic actuators .5, for example, the right one (Fig. 3), the piston 2 and the spool 11 controlled by it move down, however, the valve is closed, * 'as the other spool 11 is in the upper position and closes with their outer surface, both cross channels 14 and 15, and the medium does not reach the consumer.
    In embodiments of the device for monitoring the position of the spools 11 and the presence of medium pressure in the duct 9, the installation of pneumatic switches is provided, the differential pressure of the medium on the sensing element of which determines the position of the spools 11 and the presence of medium pressure in the flow channel 9.
    /
    Their position can also be monitored using inductive or capacitive sensors 16, interacting with the spools 11.
    This embodiment of the device allows for reliable operation in the presence of signals to both electromagnetic drives. In case of breakdown or erroneous inclusion of only one electromagnet drive, the flow channel will be fed once from the channel.
    权利要求:
    Claims (1)
    [1]
    1. Patent of Germany No. 1266129, class 58a 15/28, published. 1968.
    sixteen
    W
    FIG. 2
    0t / eA
    FIG.
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    同族专利:
    公开号 | 公开日
    DE2756240C2|1985-12-19|
    BE872683A|1979-03-30|
    DE2756240A1|1979-06-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2271169A|1936-10-31|1942-01-27|Maybach Motorenbau Gmbh|Control mechanism for power operated gear shifting apparatus|
    DD38890A3|1962-05-24|
    DE1650604B1|1967-11-25|1972-02-03|Woerner Oeler & Fetterfab|HYDRAULIC PISTON CONTROL UNIT FOR ALTERNATELY DISTRIBUTION OF PRESSURE MEDIUM TO TWO CONSUMERS|
    DE2048829A1|1970-10-05|1972-04-06|Bosch Gmbh Robert|Anti-lock device|DE3110220C2|1981-03-17|1989-06-08|Gewerkschaft Eisenhuette Westfalia Gmbh, 4670 Luenen, De|
    US4542767A|1983-04-05|1985-09-24|Ross Operating Valve Company|Monitor for double safety valves|
    DE3615369C2|1986-05-06|1995-11-16|Herion Werke Kg|Safety valve|
    US5799561A|1996-07-15|1998-09-01|Ross Operating Valve Company|Control device|
    SE505573C2|1995-12-19|1997-09-15|Ross Operating Valve Co|Control device with self-control of the control device components during each control operation|
    DE19622198A1|1996-06-03|1997-12-04|Herion Technomatic Ag Aesch|Dynamic monitoring device for valves|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19772756240|DE2756240C2|1977-12-16|1977-12-16|Safety valve for pressure medium-operated consumers|
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