CH359979A - Servo motor for operating two machine parts - Google Patents
Servo motor for operating two machine partsInfo
- Publication number
- CH359979A CH359979A CH359979DA CH359979A CH 359979 A CH359979 A CH 359979A CH 359979D A CH359979D A CH 359979DA CH 359979 A CH359979 A CH 359979A
- Authority
- CH
- Switzerland
- Prior art keywords
- servo motor
- machine parts
- operating
- actuating
- pressure
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1409—Characterised by the construction of the motor unit of the straight-cylinder type with two or more independently movable working pistons
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Description
Servomotor zur Betätigung zweier Maschinentelle Servomotore zur Betätigung von Maschinenteilen bestehen im allgemeinen aus einem Zylinder, in wel chem ein von einem Druckmittel beaufschlagter, vor zugsweise doppelt wirkender Kolben bewegbar ange ordnet ist. Die Kolbenstange ist in solchen Fällen mit dem zu betätigenden Maschinenteil verbunden. Derartige Servoeinrichtungen werden z. B. für die Be tätigung der Ein- und Auslassventile der Schleusen von Druckkammern verwendet. Solche Schleusen be nutzt man beispielsweise bei Vakuumtrocknern, um Getreide in den unter Unterdruck stehenden Behand lungsraum einzuschleusen und es wieder auszuschleu sen.
In diesem Falle hat man bis jetzt die Servoein- richtung für das Einlassventil ausserhalb der Schleuse und die Servoeinrichtung für das in die Druckkammer führende Auslassventil innerhalb der Schleuse an geordnet.
Der Nachteil hierbei liegt darin, dass auftretende Undichtigkeiten der innerhalb der Schleuse gelegenen ServoeinrichtungdieDruckverhältnisseinderSchleuse, insbesondere bei Vakuum, stören. Nachteilig ist wei terhin, dass die überwachung der Funktion der Servoeinrichtung sehr erschwertwird, da diese in einem luftdicht geschlossenen Behälter angeordnet ist. Re paraturen an der Einrichtung bedingen ausserdem einen zeitraubenden Ausbau aus der Schleuse.
Gemäss der Erfindung werden die genannten Nachteile durch einen Servomotor vermieden, der zwei gleichachsig hintereinanderliegende Druckmittel-. zylinder mit Kolben aufweist, deren eine Stange durch die andere hindurchgeht.
Durch diese Ausbildung werden zwei Servomotore zur Betätigung<B>je</B> eines Maschinenteiles baulich ver einigt, ohne dass die Unabhängigkeit der Funktionen beider beeinträchtigt wird. Für den Fall des vor erwähnten Anwendungsbeispieles der Servomotore für die Betätigung der Ein- und Auslassventile der Schleusen von Druckkammern ergibt sich der beson dere Vorteil, dass durch den Wegfall des in der Schleuse gelegenen Scrvomotors für die Betätigung des Auslassventils die Druckverhältnisse in der Schleuse nicht mehr gestört werden.
Die Erfindung wird an Hand eines Ausführungs- beispieles, das in der Zeichnung dargestellt ist, im folgenden näher erläutert: Der Servomotor besteht aus zwei gleichachsig hin- tereinanderliegenden Druckmittelzylindern <B>1,</B> 2, deren benachbarte Stirnwände in besonders vorteilhafter Weise zu einer gemeinsamen Stirnwand<B>3</B> vereinigt ,sind, während die Zylinder nach aussen durch die Stirnwände 4,<B>5</B> abgeschlossen sind.
Durch die Spannschrauben<B>6,</B> welche durch die Stirnwände, 4,<B>5</B> hindurchgeführt und in der gemeinsamen Stirnwand<B>3</B> verschraubt sind, werden die Zylinder<B>1,</B> 2 druckdicht zu einer baulichen Einheit verbunden. In jedem der Zylinderräume<B>8, 9</B> befindet sich ein in diesen ver schiebbarer, doppelt wirkender Kolben<B>10, 11;</B> diese sind über Gewinderinge 12 mit Kolbenstangen<B>13,</B> 14 verbunden, von denen die eine,<B>13,</B> durch die andere, 14, längsbeweglich hindurchgeführt ist.
Die Enden der Kolbenstangen<B>13,</B> 14 sind mit einem Gewinde <B>15</B> für den Anschluss an die zu betätigenden Ma schinenteile versehen, beispielsweise für die Ventile der Schleusen von Druckkamrnern. Mit<B>16</B> und<B>17</B> sind Druckmittelzu- bzw. -ableitungen für jeden<B>Zy-</B> linderraum<B>8, 9</B> bezeichnet.
Jeder der Kolben<B>10, 11</B><U>kann</U> bei Druckmittel- zufuhr unabhängig von der Stellung des anderen be tätigt werden.
Servo motor for actuating two machine parts Servo motors for actuating machine parts generally consist of a cylinder in which a pressurized, preferably double-acting piston is movably arranged in wel chem. In such cases, the piston rod is connected to the machine part to be operated. Such servos are z. B. used for loading the inlet and outlet valves of the locks of pressure chambers. Such locks are used, for example, in vacuum dryers to smuggle grain into the negative pressure treatment room and to discharge it again.
In this case, the servo device for the inlet valve has been arranged outside the lock and the servo device for the outlet valve leading into the pressure chamber has been arranged inside the lock.
The disadvantage here is that any leaks occurring in the servo device located within the lock disturb the pressure conditions in the lock, especially in the case of a vacuum. Another disadvantage is that the monitoring of the functioning of the servo device is made very difficult because it is arranged in an airtight container. Repairs to the facility also require a time-consuming removal from the lock.
According to the invention, the disadvantages mentioned are avoided by a servomotor, the two coaxially one behind the other pressure medium. has cylinder with piston, one rod of which passes through the other.
With this design, two servomotors for actuating a machine part are structurally united without the independence of the functions of both being impaired. In the case of the aforementioned application example of the servomotors for actuating the inlet and outlet valves of the locks of pressure chambers, there is the particular advantage that the pressure conditions in the lock no longer exist due to the omission of the scrvomotors for operating the outlet valve be disturbed.
The invention is explained in more detail below using an exemplary embodiment shown in the drawing: The servomotor consists of two coaxially one behind the other pressure cylinders 1, 2, their adjacent end walls in a particularly advantageous manner are combined to form a common end wall <B> 3 </B>, while the cylinders are closed to the outside by the end walls 4, <B> 5 </B>.
The cylinders <B> become through the tensioning screws <B> 6, </B>, which are passed through the end walls 4, <B> 5 </B> and are screwed into the common end wall <B> 3 </B> 1, 2 connected pressure-tight to form a structural unit. In each of the cylinder chambers <B> 8, 9 </B> there is a double-acting piston <B> 10, 11; </B> which can be pushed into these chambers <B> 10, 11 </B>; B> 14 connected, of which one, <B> 13, </B> is passed through the other, 14, longitudinally movable.
The ends of the piston rods <B> 13, </B> 14 are provided with a thread <B> 15 </B> for connection to the machine parts to be operated, for example for the valves of the locks of pressure chambers. With <B> 16 </B> and <B> 17 </B> pressure medium supply and discharge lines are designated for each <B> cylinder </B> cylinder space <B> 8, 9 </B>.
Each of the pistons <B> 10, 11 </B> <U> can </U> be actuated when pressure medium is supplied, independently of the position of the other.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE359979X | 1957-06-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH359979A true CH359979A (en) | 1962-01-31 |
Family
ID=6291354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH359979D CH359979A (en) | 1957-06-29 | 1958-03-24 | Servo motor for operating two machine parts |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH359979A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3208354A (en) * | 1963-02-07 | 1965-09-28 | Parker Hannifin Corp | Fluid pressure motor |
EP0258557A1 (en) * | 1986-07-04 | 1988-03-09 | AUTOBLOK S.p.A. | Mandrel provided with angular indexable jaws |
US4756238A (en) * | 1986-12-12 | 1988-07-12 | Kyoho Machine Works, Ltd. | Apparatus for performing plural operations on a common workpiece |
US4823677A (en) * | 1988-01-19 | 1989-04-25 | General Electric Company | Brake power assist servomotor |
US5012725A (en) * | 1990-04-19 | 1991-05-07 | Rockwell International Corporation | Three position actuator for shifting a two speed transfer case |
US5611489A (en) * | 1992-05-20 | 1997-03-18 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation S.N.E.C.M.A. | Actuating system for a variable area exhaust nozzle |
CN103879007A (en) * | 2014-03-20 | 2014-06-25 | 河南科技大学 | Double-action hydraulic machine |
CN104196812A (en) * | 2014-08-06 | 2014-12-10 | 淮海工学院 | Air and liquid linkage spiral rotation cylinder |
CN104791323A (en) * | 2015-05-05 | 2015-07-22 | 东营蒙德金马机车有限公司 | Double-outflow-head six-cavity combined oil cylinder |
EP3130810A4 (en) * | 2014-04-11 | 2017-12-27 | Shenzhen Biteman Science&Technology Co., Ltd | Cylinder, and absorption and separation device having same |
-
1958
- 1958-03-24 CH CH359979D patent/CH359979A/en unknown
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3208354A (en) * | 1963-02-07 | 1965-09-28 | Parker Hannifin Corp | Fluid pressure motor |
EP0258557A1 (en) * | 1986-07-04 | 1988-03-09 | AUTOBLOK S.p.A. | Mandrel provided with angular indexable jaws |
US4756238A (en) * | 1986-12-12 | 1988-07-12 | Kyoho Machine Works, Ltd. | Apparatus for performing plural operations on a common workpiece |
US4823677A (en) * | 1988-01-19 | 1989-04-25 | General Electric Company | Brake power assist servomotor |
US5012725A (en) * | 1990-04-19 | 1991-05-07 | Rockwell International Corporation | Three position actuator for shifting a two speed transfer case |
US5611489A (en) * | 1992-05-20 | 1997-03-18 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation S.N.E.C.M.A. | Actuating system for a variable area exhaust nozzle |
CN103879007A (en) * | 2014-03-20 | 2014-06-25 | 河南科技大学 | Double-action hydraulic machine |
CN103879007B (en) * | 2014-03-20 | 2016-06-08 | 河南科技大学 | Two dynamic hydropress |
EP3130810A4 (en) * | 2014-04-11 | 2017-12-27 | Shenzhen Biteman Science&Technology Co., Ltd | Cylinder, and absorption and separation device having same |
CN104196812A (en) * | 2014-08-06 | 2014-12-10 | 淮海工学院 | Air and liquid linkage spiral rotation cylinder |
CN104791323A (en) * | 2015-05-05 | 2015-07-22 | 东营蒙德金马机车有限公司 | Double-outflow-head six-cavity combined oil cylinder |
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