DE4342117B4 - Fluid operated control arrangement for the operation of a safety door, in particular fire door on ships - Google Patents

Abstract

fluid-powered Control arrangement for the activity a protective door, in particular fire door on ships, with a double-acting adjustment cylinder for the door, in closing direction the door constantly and in the opening direction the door over first control valve connected to the pressure of a pressure medium source is, a manually or mechanically operable second control valve, its operation an adjustment of the adjusting triggers in the opening direction and a responsive to a first temperature or an external control command first control means, the pressure medium source and possibly a secondary pressure medium source separates from the control valves when a predetermined temperature reached or exceeded is, characterized in that a via a first adjustable Throttle (76a) with the pressure medium source (28a) connected auxiliary volume (18a) is vented, when the second control valve (24a) is actuated and one of the pressure in the auxiliary volume (18 a) controllable third control valve (62 a) the Adjusting cylinder in the opening direction with the pressure medium source (28a) connects when the auxiliary volume (18a) vented is, the pressure medium source (28) via a at a second ...

Description

The The invention relates to a fluid operated control arrangement for the activity a protective door, in particular fire door on ships according to the preamble of claim 1 or 6.

It is known, doors to operate with pressure medium cylinders. For example, fire doors, especially on ships, operated in this way. The individual adjusting cylinders or groups of adjusting cylinders are fed not only by a central pressure medium supply ge, such as compressors, but are also associated with a pressure medium auxiliary source or secondary pressure medium source, in case of failure of the primary pressure medium source a predetermined number of operations allows until these too exhausted is.

Fire doors to Example on ships, the holds or connecting car or railroad decks or the like with other spaces usually constantly closed. They close automatically, if they are temporary opened by a passerby become. Fire doors in the so-called salon area, however, are normally open. For both Fire doors However, it is a condition that they in case of fire in the closed state. The command to close the Fire doors or to keep the doors closed diverse, for example, from the command bridge are given. Alternatively, however, such a command may also be generated by a corresponding fire alarm.

From the DE 36 01 885 A1 a protective valve has become known which, in response, for example at a certain temperature, separates the primary pressure medium source from the fluid-operated control of the adjusting cylinder (s), closes in a temperature-resistant manner and vents the adjusting cylinder, the control itself and the secondary pressure medium source. However, before the fluid-controlled and fluid-operated actuation of a safety door is excluded, it must remain operable even in the event of a fire until a predetermined maximum ambient temperature is reached so that passengers are not prevented from escaping. Known protective doors have the property that they go when actuated by the handle or button completely in the open position, to then reach the closed position again. Especially with larger and heavier doors, this process takes a relatively long time. Correspondingly long is caused by the door opening chimney effect. In order to accomplish a faster closing of the door, it has also become known to initiate a closing movement of the door by operating a door handle opposite to the opening direction. This makes it possible to stop the opening operation of the door and to cause the closing operation before the complete opening. However, it is doubtful whether a person passing the guard door is willing and able to initiate the closing operation by stopping and turning around when danger is in delay and the door handle is no longer in the operating position due to the lateral door movement. Rather, it must be assumed that in a larger number of operation in case of danger, the protective door is not prematurely closed again, but by the automatic only after the complete opening.

Of the Invention is based on the object, a fluid-operated control arrangement for the activity a protective door, in particular a fire door to create on ships, by simple means a special advantageous and safe adaptation of the protective door to the emergency allows.

These The object is achieved by the features specified in claims 1 and 6 solved. Advantageous embodiments of the invention are in the corresponding dependent claims specified.

The The invention is based on a control device, the two control valves having. One is a centrally controllable valve, for example Solenoid valve, z. B. which can be operated by the command bridge. It connects the pressure medium source (hereinafter is under pressure medium source mostly the primary and the secondary source understood by it, without that expressly is pointed) with the opening side the adjusting cylinder. The closing side is constantly under Pressure, whereby by difference surface effect on the adjustment cylinder the door only then opens, though the opening side Pressure supplied becomes. With the help of this precaution, a protective door can constantly open held or desired Time opened become. Another control valve is operated by hand and is either at the door (Door handle) or next to the door as a pushbutton. It also has the task of opening the close the door cause what happens, for example, by a at the Door attached Contact strip, the touch with one person opening or reopening the closing one Door causes. After all contains the control arrangement also a responsive to a predetermined temperature Control means, for example, to an ambient temperature of 78 ° to the Separate pressure medium source from the control arrangement, so that another fluid-controlled actuation the protective door is prevented in case of fire.

In a first alternative of the invention now an auxiliary volume provided, which is connected via a first throttle with the pressure medium source and can be vented via the actuation of the second control valve. The protective door is in the closed position and the second control valve is actuated, this leads to a venting of the auxiliary volume. A third control valve, which is controlled by the pressure in the auxiliary volume, switches over and thereby connects the pressure medium source with the opening side of the adjusting cylinder to move the door in the opening direction. If the venting process is completed, for example by releasing the handle, the auxiliary volume fills up again via the throttle, which takes a certain time depending on the volume size and the throttle cross-section. This time must be such that the door reaches its full open position. By appropriate dimensioning of the throttle can meanwhile be achieved that the auxiliary volume is filled before the door is fully opened. Namely, when the auxiliary volume is filled, the third control valve returns to its original position, thus separating the opening side of the adjusting cylinder from the pressure medium source, so that on the closing side of the adjusting the closing movement of the door is initiated.

essential to the invention is further that the pressure medium source via a second control means and another throttle also with the Auxiliary volume is connected. The second throttle has a much larger flow area like the first throttle, so that at a switching of the control means the auxiliary volume significantly replenished faster as over the first throttle. As a result, the protective door no longer reaches the full open position, but ends the opening movement prematurely and then later in the closed position to return. The second control means is responsive to temperature and / or to a control command from the bridge or the like. The response should only take place if is already in danger of delay, but still no permanent closure of proof doors is required. This can, for example, at temperatures of 50 ° or more in the area of the protective door be the case. The auxiliary volume or the size of the second throttle can so be measured that the Example the protective door only one opening width 1 m when operated by a passenger, afterwards immediately back to the closed position to get. The protective door is therefore only open as long as necessary or only by one width in case of danger, sufficient to allow a comfortable passage. The on this However, also not preventable chimney effect is compared to the in known protective doors significantly reduced.

at activity the contact strip can be Naturally, the door according to the invention also continues as by the delay means open adjustable opening width, for example even to the full opening state. However, as soon as the contact strip relieves and thus ends the vent soon becomes the safety gate back to the closed position to return.

at the protective door according to the invention are therefore three operating phases possible. One relates to the normal operation with the usual opening and closing operation. The second concerns a dangerous situation, in which, however, still escape must be present. Here, the invention ensures that the by the opening the door unavoidable chimney effect is kept as small as possible. In the third Phase is a fluid controlled actuation of the protective door from the closed position out no longer possible. The for the operation a protective door required funds are of little effort and not expensive as the operation conventional safety doors.

at A second alternative of the invention is now provided that the control valve arranged in the piston or the piston rod and via a line constantly with the pressure medium source is connected. Located in the piston rod an auxiliary volume, one side of which is a control piston is limited, which is mechanically coupled to the control valve so is that at Pressure in the auxiliary volume, the control valve is brought into the open position and the cylinder chambers connects with each other. The mechanical coupling is preferably via a rod connected to the control piston, which is directly on the Control valve, for example in the piston, acts.

The Pressure medium source is over a fixed line with the first cylinder space of the stationarily arranged Verstellzylinders connected, with an internal connection the first Cylinder space, which can also be referred to as a jacket space, with the hollow piston rod connects. That by hand or otherwise mechanically actuated switching valve for operation the door will then over the with the door leaf Moving piston rod supplied with the pressure of the pressure medium source. Any movable lines are therefore eliminated.

The temperature-sensitive switching valve is according to an embodiment of Invention connected in series with the first switching valve, wherein depending on the position of the temperature-sensitive valve, a vent of the Auxiliary volume optionally via a small or a larger throttle cross-section takes place, e.g. the opening movement a door to limit or the closing movement already initiate before the door Completely open Has.

If the sliding door is constantly in opening position tion, for example, as a fire door in the salon deck, then a solenoid valve is preferably provided which connects the second cylinder chamber constantly with the pressure source, so that the adjusting cylinder holds the door in the open position. If the central solenoid valve is de-energized, the second cylinder chamber is vented via a throttle, which is preferably adjustable in the opening cross-section, so that the adjusting cylinder automatically brings the sliding door into the closed position.

In some cases is required, fire doors constantly to keep closed, for example in so-called car decks. In such sliding doors Due to the relatively small opening width, there is no need to before the end of the opening movement close. In this case, a rapid ventilation of the auxiliary volume, z. B. over a throttle with a larger cross section, be waived and an actuation the adjusting cylinder directly over the optional pressurization or venting of the second cylinder chamber occur. In many cases, such doors are not with manual operations on the door leaf itself provided, but a push button operation on both sides of the Door arranged. A control of the door over the Auxiliary volume is then over the contact strip and the associated switching valve instead. In this Case strikes From a design of the invention that the second cylinder space optionally on the Solenoid valve and a Tastventil and actuated by the Tastventil Control valve can be connected to the pressure source, whereby the vent either via a the valves and a throttle takes place. The feeler valve is preferably via a Control volume and over a throttle connected to the control valve.

Finally, can provided according to one embodiment of the invention, a door lock cylinder be that constantly communicates with the second cylinder space. Is this with Pressure applied, the door latch is in the open position. In the other Case he is in closed position, this being made by a spring in the locking cylinder becomes.

embodiments The invention will be explained in more detail with reference to the drawing. It shows:

1 schematically a control arrangement according to the invention.

2 schematically a second embodiment of a control arrangement according to the invention.

3 schematically the control arrangement according to 2 with additional circuit parts.

4 schematically the structure of the adjusting of the control arrangements according to 2 and 3 ,

A door, not shown, is by an adjusting cylinder 10a pressed, a piston 12a with a hollow piston rod 14a having. In the cylinder 10a is a volume section 18a Trained over a hollow pole 20a moving through the piston 12a and the piston rod 14a extending into the latter, with the interior of the piston rod 14a connected is. The interior of the piston rod is via a pipe 22a with a mechanically manually operated control valve 24a connected, which when actuated the line 22a connects with atmosphere. A handle for actuating the valve 24a is at 26a shown. Additionally or alternatively, a contact strip attached to the door can also open the valve 24a actuate.

A source of pressure medium 28a is over a line 30a , a valve 32a and a line 34a with a line 36a connected to the also a secondary pressure medium source 38a connected. In the line 36a is a controllable pressure reducer 40a arranged. In the open position of the valve shown in the figure 32a is the lead 30a over the valve 32a with the line 42a connected to the input of a solenoid valve 44a leads. The solenoid valve is controlled externally, for example, from a command bridge of a ship. About a line 46a , an OR valve 48a and a line 50a is the outlet of the valve 44a with a first pressure room 52a in the cylinder 10a connected, causing the piston 12a is acted upon in the opening direction of the door, not shown. The from the valve 32a coming line 34a is in the open position of the valve 32a locked, but via a check valve 54a with the line 42a connected, so that if necessary by the pressure reducer 40a reduced pressure of the pressure medium source 28a . 38a in the pipe 36a prevails and thus the other pressure chamber 56a of the cylinder 10 over a line 58a provided. In the closed position of the valve 44a is the pressure room 52a depressurized, so that the adjusting cylinder 10a holding the door in the closed position. Will, however, the solenoid valve 44a operated, is via the OR valve 48a the pressure room 52a applied. Since the associated effective area of the piston is greater than the opposite, the piston 12a moves to the right and opens the protective door.

The administration 36a is also via a line 60a with a differential valve 62a connected, which is shown in a position in which it is the conduit 50a over the Oder valve 48a and the line 63a with the line 64a connects, in which an adjustable throttle 66a is arranged to the pressure chamber 52a to connect with the atmosphere.

From the line 36a branches a line 68a from, a line 70a branches off, which via a parallel circuit of throttle 72a and check valve 74a at a control input of the valve 62a is applied. Behind the turn is an adjustable throttle 76a behind which the second control input of the control valve 62a branches. The administration 68a is with the auxiliary volume 18a connected. The administration 36a is also with a lead 78a connected via a valve 80a and an adjustable throttle 82a also with the volume 18a connected is. The valve 80a is temperature-dependent and opens, for example, at a temperature of 50 ° C. However, it may alternatively and additionally be operated externally (not shown). In this case, the throttle is 82a , which has a much larger flow cross-section than the throttle 76a , connected in parallel with the latter.

The administration 50a is over a line 84a with an adjusting cylinder not described in detail 86a connected.

A temperature-dependent bursting element 90a or the like is located at a control input of the valve 32a , It responds, for example, to a hazard temperature of 78 °. In this case, the control input is vented, so that the valve 32a switches over and thereby the line 34a connects with the atmosphere. The administration 30a is closed temperature-resistant. The wires 34a and 42a are connected to the atmosphere and vent the entire control and secondary pressure medium source.

following the operation of the protective door should be explained.

It is assumed that the protective door is in the closed position and the valve 44a unconfirmed. Will the door handle 26a operated, vented the valve 24a the auxiliary volume 18 , so that at the left control input of the valve 62a a pressure drop occurs, causing the valve 62a is moved to the other position in which the line 36 over the line 60a , The administration 63a and the line 50a with the pressure room 52a the adjusting cylinder 10a is connected. This will cause the piston 12a moved to the right and put the door in the open position. Although the operation on the handle 26a only briefly was, the opening movement of the piston 12a continued until over the throttle 76a the auxiliary volume has been refilled so far that at the control input of the valve 62a the operating pressure is again enough. The control valve 62a switches back to its original position and connects the pressure chamber 52a over the throttle 66a with atmosphere. The closing operation begins, wherein the closing time and closing speed through the flow cross-section of the variable throttle 66a can be adjusted. The opening width of the door can be adjusted by adjusting the flow cross-section of the throttle 76a predetermined until full openings or by a temporally longer operation of the door handle 26a until full opening.

Now suppose that the temperature in the vicinity of the guard has reached a certain height, for example 50 °. In this case, a bursting bottle speaks in the valve 80a and puts it in open position. Now the handle 26a actuated, begins again in the manner described, the opening operation on the adjusting 10a , Refilling the auxiliary volume 18a but mainly about the throttle 82a instead of having a much larger flow area than the throttle 76a Has. As a result, the operating pressure in the auxiliary volume is reached relatively quickly. This means that the operation of the door only leads to a partial opening. For example, the refilling time of the auxiliary volume can be adjusted so that the door is opened only by a width of 1 m. Then begins in the manner already described, the closing process. Will the valve during the closing process 24a reversing not shown contact strip actuated again begins a limited opening operation, followed by the closing operation after the opening movement. By one or more confirmation of the contact strip, the door can also be completely brought into the open position.

As already mentioned, the valve can 80a be controlled externally regardless of the temperature, so that, for example, from the bridge, one or more doors can always be operated so that they make only a partial opening.

If a further temperature, for example 78 °, exceeded, a fluid-controlled opening of the door is no longer possible because, as already described, the pressure medium sources 38a and the entire control system is vented.

For the described Control arrangement can pressurized liquid or gaseous fluid be used. Preferably, air is used.

In 2 is an adjustment cylinder arrangement 10 to recognize the operation of a sliding door, such as fire door of a passenger ship. The cylinder arrangement 10 has a cylinder 12 which is arranged stationary (all parts in 2 , which are enclosed by a dashed line, are stationary, while the other parts except the parts 92 and 94 attached to the door leaf). One in the cylinder 12 guided piston 14 has a hollow piston rod 16 on, causing the cylinder 12 a first cylinder space 18 and a two cylinder space 20 are formed. The piston rod 16 forms in the right part of a cylinder by a control piston 22 in a right cylinder room or an auxiliary volume 24 and a left cylinder space 26 is divided, wherein the cylinder space 26 through a wall 28 airtight from the remaining space of the hollow piston rod 16 is disconnected. The piston 22 is with a piston rod 30 with one in the piston 14 arranged control valve 32 coupled. Between the wall 28 and the piston 22 there is a spring 34 that the control piston 22 biasing to the right.

A source of pressure medium 36 is via a shut-off valve 38 with a fire protection valve 40 connected, which is normally switched through and therefore a connection with a line 42 manufactures. Via a check valve 44 , The administration 46 , a pressure reducing valve 48 and the line 50 is the cylinder space 18 with the pressure medium source 36 constantly in contact. This is clearer 4 remove. There it can be seen that the cylinder space 18 at the left end over a fixed line piece 52 or suitable connection with the hollow piston rod 16 connected is. The interior of the piston rod is connected via a cable 54 with a mechanically actuated switching valve 56 connected. It can be actuated for example by a door handle and / or by a contact strip. The output of the switching valve 56 is with a temperature-sensitive switching valve 58 connected, whose output via a parallel circuit of check valve and adjustable throttle 60 with the auxiliary volume 24 communicates. A parallel line 62 contains a parallel connection 64 out of check valve and throttle and vents the volume 24 via the switching valve 58 in the position shown and by the switching valve 56 ,

The administration 42 is with a solenoid valve 66 connected, whose output via a line 68 with the second cylinder space 20 communicates. In the line 68 there is a parallel connection 70 from adjustable throttle and check valve. Will the solenoid valve 66 operated, the pressure source is thus constantly with the cylinder chamber 20 in connection. In the non-actuated position is the line 68 via the solenoid valve 66 and a silencer 72 in contact with atmosphere.

A locking cylinder 74 is over a line 76 constantly with the cylinder space 20 in connection. Being by a spring 78 acted upon piston 80 operates a latch 82 ,

Temperature-dependent bursting elements 84 . 86 are with the control input of the fire protection valve 40 connected. For example, they respond to a hazard temperature of 78 ° C. In this case, the control input is vented, so that the valve 40 switches over and over a throttle 88 performs a vent, whereby the entire system is depressurized. This switching can be achieved by an adjustable preload spring 90 be varied, for example, even at very low pressure of the pressure medium source 36 depressurize the system so that the sliding door can be manually operated.

It should be mentioned that the line 50 to a secondary pressure source 92 that has a safety valve 94 connectable with atmosphere is connected.

The arrangement shown after 2 works as follows. Upon actuation of the solenoid valve 66 , For example, from a bridge or also located in the door area buttons, the cylinder chamber 20 with the pressure of the pressure medium source 36 supplied in the manner described above, so that the piston 14 and with it the piston rod 16 be moved to the right to bring the door in the open position. In this she can normally stay. However, if the door is closed for safety reasons, for example, from the command bridge, the solenoid valve 66 de-energized and the adjusting cylinder arrangement 10 has the in 2 shown position. In this case, the cylinder space 20 over the throttle 70 and the valve 66 vented. Will now the switching valve 56 Pressed, compressed air passes through the temperature-sensitive valve 58 and the check throttle valve 60 to the auxiliary volume 24 , This will be the spool 22 adjusted to the left and actuates the control valve 32 in the piston 14 , This adjustment causes a line connection between the interior of the piston rod 16 and the cylinder space 20 , so that the operating pressure now in the room 20 prevails, causing the piston 14 now moved to the right to open the door. Once the actuation of the valve 56 finished and it has returned to its original position, there is a venting of the auxiliary volume 24 via the throttle check valve 60 , After a certain bleeding time, the spring 34 the piston 22 turn it to the right again, causing the valve 32 the connection between the cylinder space 20 and the piston rod 16 locks. Then the cylinder space can 20 be vented in the manner described above, so that the pressure in the cylinder chamber 18 the adjusting cylinder adjusted back to the closed position. The opening time or closing time is, as can be seen, through the cross sections of the throttles 60 and 70 certainly. Speaks the temperature-sensitive valve 58 on, for example, at 50 ° C, then switching takes place, so that a ventilation of the auxiliary volume 24 now on the throttle check valve 64 takes place, which has a much larger cross section than the check valve 60 , As a result, for example, the opening of the fire door is no longer entirely, but is broken off, for example after 1 m opening width. By pressing the Contact strip the the valve 56 operated, however, the door can be stopped or adjusted to the full open position.

The embodiment according to 3 is similar in many parts of the 2 , So that the same parts are provided with the same reference numerals. It is therefore waived to explain their function again.

As can be seen, lie two Tastventile 100 . 102 parallel to a line 104 that with the line 46 is connected, in turn, with the pressure medium source 36 connected when the fire valve 40 in the open position. To the output of the feeler valve 102 is a line 106 in which a throttle check valve 108 and a buffer volume 110 are arranged. The buffer volume is located at the control input of a control valve 112 whose output is via a line 114 , an OR valve 116 and the throttle check valve 70 with the line 68 communicates.

Of the additional Control part is for the operation of fire doors, as required on car decks, for example. They are usually closed. She is as well provided for one activity of such doors by means of push buttons, which are attached on both sides of the door opening. One door handle or the like is e.g. for safety reasons not provided.

Will be one of the touch valves 100 . 102 actuated, the pressure medium flows through the throttle check valve 108 in the volume 110 , Once it has built up a certain pressure, the control valve 112 switched, which the pressure from the line 104 into the pipe 114 transfers and from there via the Oder valve 116 and the throttle check valve 70 to the cylinder room 20 , As a result, an adjustment of the adjusting cylinder 12 in the open position. After such an operation takes place immediately through the throttle 108 controllable ventilation of the control volume 110 , so that the control valve switches again and the cylinder chamber 20 over a silencer 114a connects with atmosphere. Depending on the position of the OR valve 116 There is also a venting of the cylinder chamber 20 via the solenoid valve 66 in the manner described above. As a result, as already described, the adjusting cylinder 10 drive back to the closed position.

The use of a temperature-sensitive valve, such as the valve 58 , can be omitted, since due to the relatively small maximum opening widths of the guard doors, a special control of the opening width is not required.

As already mentioned, a complete shutdown of all control parts via the fire protection valve 40 take place, which is the source of pressure medium 36 fireproof shut off.

Claims (14)

Fluid operated control arrangement for the operation of a protective door, in particular fire door on ships, with a double-acting adjusting cylinder for the door, which is connected in the closing direction of the door constantly and in the opening direction of the door via a first control valve with the pressure of a pressure medium source, one hand or mechanically operable second control valve whose actuation triggers an adjustment of the adjusting cylinder in the opening direction and a first control means responsive to a first temperature or an external control command separating the pressure medium source and optionally a secondary pressure medium source from the control valves when a predetermined temperature is reached or exceeded; characterized in that a via a first adjustable throttle ( 76a ) with the pressure medium source ( 28a ) connected auxiliary volume ( 18a ) is vented when the second control valve ( 24a ) and one of the pressure in the auxiliary volume ( 18a ) controllable third control valve ( 62a ) the adjusting cylinder in the opening direction with the pressure medium source ( 28a ) connects when the auxiliary volume ( 18a ) is vented, the pressure medium source ( 28 ) via a second control means which is responsive to a second temperature and / or which can be actuated by an external control command (US Pat. 80a ) and a second adjustable throttle ( 82a ) with the auxiliary volume ( 18a ) is connectable, wherein the second temperature is below the first temperature, but above room temperature and the second throttle ( 82a ) has a larger flow cross-section than the first throttle ( 76a ). Control arrangement according to Claim 1, characterized in that the third control valve ( 62a ) in which the pressure medium source ( 28a ) of the adjusting cylinder ( 12a ) blocking position via a preferably adjustable third throttle ( 66a ) connects the adjusting cylinder with atmosphere. Control arrangement according to one of Claims 1 or 2, characterized in that the second control means ( 80a ) comprises a fourth valve containing a temperature-sensitive element that opens when the element is responsive. Control arrangement according to one of Claims 1 to 3, characterized in that the auxiliary volume ( 18a ) in the adjusting cylinder ( 12a ) is formed. Control arrangement according to Claim 4, characterized in that a cylinder section ( 18a ) via a hollow, the piston ( 14a ) penetrating rod ( 20a ) and the hollow, the hollow rod ( 20a ) surrounding piston rod ( 14a ) with the second control valve ( 24a ) connected is. Fluid operated control arrangement for the operation of a sliding door, in particular fire door on ships, with a double-acting adjusting cylinder for the door, which has a piston with a hollow piston rod and the piston rod containing cylinder space is connected via a fire valve permanently connected to a pressure medium source and the other cylinder space with the help a control valve is selectively connectable to the pressure source, wherein the actuation causes an adjustment of the adjusting cylinder in the opening direction, a manually or mechanically operable switching valve via which an auxiliary volume in the adjusting cylinder is selectively connectable to the pressure medium source or to the atmosphere, wherein the pressure in the auxiliary volume the control valve is actuated and the auxiliary volume is vented via a first throttle and the switching valve and via a larger cross-sectional throttle when a second switching valve at a predetermined temperature a nes and / or is actuated by an external control command, characterized in that the control valve ( 32 ) in the piston ( 14 ) or the piston rod ( 16 ) and via a line constantly with the pressure medium source ( 36 ), the auxiliary volume ( 24 ) in the piston rod ( 16 ) is provided, whose one side of a control piston ( 22 ) which is mechanically connected to the control valve ( 32 ) is coupled so that at a pressure in the auxiliary volume ( 24 ) the control valve ( 32 ) is operated in the open position in which the cylinder chambers ( 18 . 20 ) are interconnected. Control arrangement according to Claim 6, characterized in that the control piston ( 22 ) in a sealed part of the piston rod ( 16 ) and a spring ( 34 ) in the closed position of the control valve ( 32 ) is biased. Control arrangement according to claim 6 or 7, characterized in that the hollow piston rod ( 16 ) and the first cylinder space ( 18 ) over a channel ( 52 ) in the piston ( 14 ) are interconnected. Control arrangement according to one of claims 6 to 8, characterized in that the first and second switching valve ( 56 . 58 ) are connected in series and the auxiliary volume ( 24 ) over the first check throttle ( 60 ) in a first position of the second switching valve ( 58 ) through the first switching valve ( 56 ) is vented, while in the second switching position of the second switching valve ( 58 ) via the second check throttle ( 64 ) in turn through the first switching valve ( 56 ) is vented. Control arrangement according to one of Claims 6 to 9, characterized in that the second cylinder space ( 20 ) via a central solenoid valve ( 66 ) constantly with the pressure medium source ( 36 ) is connectable. Control arrangement according to Claim 10, characterized in that the second cylinder space ( 20 ) optionally via the solenoid valve ( 66 ) or a touch valve ( 100 . 102 ) and one of these operable control valve ( 112 ) can be acted upon with compressed air, wherein the venting of the second cylinder chamber ( 20 ) via a non-return throttle either via one of the valves ( 66 . 112 ) he follows. Control arrangement according to claim 11, characterized in that the touch valve ( 100 . 102 ) via a control volume ( 110 ) and a check throttle ( 108 ) with the control input of the control valve ( 112 ) connected is. Control arrangement according to one of claims 6 to 12, characterized in that a door lock cylinder ( 74 ) constantly with the second cylinder space ( 20 ) is connected so that the one bolt ( 82 ) actuating adjusting piston ( 80 ) from the pressure of the second cylinder space ( 20 ) is acted upon and held in the open position. Control arrangement according to one of Claims 6 to 13, characterized in that the fire protection valve ( 40 ) by an adjustable spring ( 90 ) is biased such that it is the source of pressure medium ( 36 ) shuts off when the pressure falls below a predetermined value.