Sliding closure for container containing metal melt

Abstract

The invention relates to a slide closure for a container containing a metal melt, comprising a slide housing (12), a slide unit which is guided longitudinally therein and has a tappet (13), a carrier (15) on the slide housing (12), and a linear drive (20) which can be fastened in the carrier (15) and has a drive rod (20 ') which can be coupled to the tappet (13). The linear drive (20) can preferably be pushed into and removed from a carrier (15) on the slide housing (12) transversely to the adjustment direction thereof and can be locked in the carrier (15). According to the invention, at least one locking means (25, 30) is fastened to the linear drive (20) and to the support (15) in each case, said locking means being designed in such a way that the linear drive (20) is automatically locked after or during the insertion into the support (15). This results in a permanent and reliable fastening of the linear drive in the support.

Description

Technical Field

[0001] The invention relates to a sliding closure (or push closure, Schiebeverschluss) for a container containing molten metal, wherein the sliding closure has a sliding housing, a sliding unit with a push rod guided longitudinally therein, a bracket on the sliding housing, and a linear drive which can be fastened in the bracket and has a drive rod that can be connected to the push rod, wherein the linear drive can preferably be pushed into the bracket on the sliding housing transversely to its adjustment direction and can be removed from it and can be locked in the bracket. Background Art

[0002] The known sliding closure for a vessel containing a metal melt according to document EP 3424618 comprises a sliding housing, a sliding unit with a push rod guided longitudinally therein, a support on the sliding housing, and a linear drive which can be inserted into the sliding housing and has a drive rod which can be connected to the push rod of the sliding unit via a coupling. The coupling is designed in this case so that it is coupled by sliding the drive rod toward the sliding unit when the flange of the linear drive is pushed into the lateral recess of the support, wherein the coupling has a coupling part at the end side at the push rod and a coupling part at the front end of the drive rod of the linear drive, which are coupled when the drive rod is slid toward the push rod.

[0003] A locking device is provided which can be actuated by the linear drive and which cooperates with the support, by means of which the linear drive can be fixed in the support after being pushed into the support or can be unlocked again before the linear drive is removed. The linear drive has a hydraulic cylinder, a main piston in which a drive rod is driven, and an additional piston which can be moved independently of the main piston for actuating the locking device. The additional piston is provided with a locking head guided on the drive rod, which can be driven out of the interior of the hydraulic cylinder at the front side in the locking direction when the additional piston is loaded, and can be preferably introduced into a correspondingly formed recess in the support of the hydraulic cylinder with a form fit and / or a force fit, and can be removed from the recess in the unlocking direction when the additional piston of the locking device is loaded. The lateral recess is formed in the support and in the recess formed in the support, wherein the coupling can be automatically disengaged when the linear drive is removed from the support transversely to the sliding direction of the drive rod. The locking device allows the linear drive to be automatically coupled in the support, but a relatively complex constructional solution is required due to the use of a main piston and an additional auxiliary piston that can be moved independently of the main piston in the linear drive.

[0004] Document US2010 / 0199566 discloses a locking device in a bracket for a linear drive, which is composed of a locking rod and a locking pawl cooperating therewith. The locking rod is fastened to the flange of the drive rod of the linear drive and is aligned parallel to the drive rod axis at this. The locking pawl is supported in the bracket transversely to the locking rod. The locking rod has two recesses configured as annular grooves, which correspond to the stroke end positions of the drive rod. The diameter of the annular groove is dimensioned so that when the linear drive is pushed into the bracket with the drive rod entering, the annular groove can be snapped into the locking pawl, and when the linear drive is driven out, the annular groove can be loosened from the locking pawl. When the drive rod slides, the locking rod connected thereto also slides together, wherein the locking pawl surrounds the locking rod in the region between the annular grooves, so that the locking rod and the linear drive together with it cannot be loosened from the locking pawl transversely to its longitudinal axis.

[0005] Document CN 110394621 discloses a method for repairing a sliding closure. A slide plate oil pressure device is arranged to adjust the slide plate. A linear drive that can slide by means of a robot can be pushed laterally into a bracket, for which a corresponding retaining groove is constructed in the bracket, into which a retaining ring of the cylinder can be pushed. A connection of a connecting line can be realized, in which a plug connection is placed on the one hand on the back side in an assembly seat of the bracket and on the other hand on the front side in a block below the cylinder, and after assembling the cylinder, they can be plugged together by a pressure rod. The pressure rod is pivotally held by an adjustment drive fastened in a clamping device of the robot and is manipulated by an external force using this separate adjustment drive, which must be manipulated externally.

[0006] According to document WO2017 / 033953, a drive unit with a rectangular base plate is provided, which has a push rod with a front coupling. By introducing the front side of the base plate into the groove of the drive unit bracket, the drive unit can be releasably held at the drive unit bracket. Summary of the invention

[0007] The object of the present invention is to improve the known sliding closure in such a way that its repair of containers for casting is automated and can be carried out with structurally simple means and thereby increase the operational reliability of the sliding closure during casting.

[0008] This object is achieved according to the invention in that at least one locking means is respectively present, preferably fastened, on the linear drive and on the support, and is designed to interact in such a way that an autonomous locking of the linear drive is achieved after or during the insertion into the support, preferably at the end of the insertion process.

[0009] By means of the inventive connection of at least one locking means on the linear drive and on the support, respectively, by means of which a self-locking of the linear drive is achieved after or during insertion into the support, preferably at the end of the insertion process, a permanent and secure fixation of the linear drive in the support is produced. The self-locking can prevent a movement of the linear drive counter to the insertion direction and, depending on the design, can also prevent a (further) movement of the linear drive in the insertion direction, whereby the insertion process can be ended by the self-locking.

[0010] Advantageously, the linear drive can be unlocked in the support, wherein for unlocking, an adjustment component that can be actuated manually or by means of an operator is provided in the locking device. This makes it possible to release the linear drive using simple means, which however ensure the secure locking in an undisturbed manner. Thus, even in the event of vibrations or shocks caused by operation in the sliding closure, the locking is always ensured and the linear drive can be permanently prevented from coming loose from the support.

[0011] Advantageously, one locking device has a slidable locking element with a front part, wherein the front part engages in a recess of the other locking device during locking in such a way that locking is achieved, wherein the locking element is preferably supported adjustably transversely to the insertion direction of the linear drive. With this design of the cooperating locking devices, a non-releasable locking is achieved during operation.

[0012] The locking device of the linear drive preferably comprises an encapsulating housing, the locking element which can slide therein, and a spring device, wherein the locking element with its front part can slide by the spring device into a position protruding relative to the encapsulating housing. The locking device of the support has a sliding shoe with a recess, which comes into sliding contact with the front part of the locking element when the linear drive is pushed in and / or pushed out. Preferably, the sliding shoe is designed with a ramp-shaped sliding guide extending approximately in the push-in direction of the linear drive for sliding contact with the front part and the recess. As a specific embodiment, a simple structure of the locking device is thus achieved.

[0013] The recess in the sliding shoe is positioned relative to the support in the insertion direction in such a way that the front part snaps into the recess when the linear drive rests against a stop in the support. In this case, the insertion process ends with the stop, wherein at the end of the insertion process, an autonomous locking is also achieved. In this end position, the sliding shoe in the recess and the front part touch each other with a contact surface, wherein the contact surfaces extend at least approximately perpendicularly to the insertion direction of the linear drive, so that the front part is locked in the sliding shoe. In addition, due to the linear drive resting against the stop in this way, an advantageous additional clamping is produced.

[0014] A linear drive is known which comprises a drive rod and a protruding transverse flange on the front side and a C-shaped guide groove in the support on the back side for its accommodation. For example, the encapsulated housing of the locking device is arranged laterally in the transverse flange and the sliding shoe is arranged next to the C-shaped guide groove on the back side of the support. Thus, these locking devices are placed in an area approximately protected for them. In principle, on the contrary, the encapsulated housing can be arranged next to the guide groove and the sliding shoe can be arranged laterally in the transverse flange.

[0015] The manipulable adjustment assembly is preferably fastened transversely to a locking element of a locking device in the linear drive and projects through a longitudinal opening from the encapsulated housing, preferably away from the linear drive. By sliding upward, the locking element can be unhooked with its front part from the recess in the sliding shoe and release the linear drive.

[0016] Furthermore, the linear drive and the support are associated in pairs with at least one electrical plug element for electrical connection lines and / or at least one plug element for at least one connection line for a preferably gaseous medium, such as air.

[0017] The invention is also characterized in that the plug elements are arranged in such a way that they plug in autonomously after or during the insertion of the linear drive into the support, preferably at the end of the insertion process, and the locking device locks quasi autonomously. This makes it possible to reduce the insertion of the linear drive as the only manual or robot-based activity without having to additionally connect the plug elements by hand.

[0018] Even when the linear drive is removed from the support, only the adjustment assembly in the locking device can be actuated for unlocking. The plug elements associated in pairs with the linear drive and the support are released autonomously.

[0019] After or during the insertion of the linear drive into the support, preferably at the end of the insertion process, the coupling head of the drive rod of the linear drive can be coupled to the push rod of the slide unit autonomously by axial adjustment. On the other hand, when the linear drive is removed from the support after unlocking, the coupling head can be moved laterally away from the push rod autonomously. This results in additional advantages in terms of automatic repair of the slide closure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention and its further advantageous embodiments are explained in more detail below by way of example with reference to the accompanying drawings, wherein:

[0021] Figure 1shows a perspective view of a carrier of the depicted sliding closure and a linear drive which can be inserted therein, the carrier and the linear drive each having an exemplary locking means according to the invention;

[0022] Figure 2 shows a perspective view of the linear drive as it is pushed into the bracket before the locking device is locked; and

[0023] Figure 3 A longitudinal section through the locking means is shown in the locked state, in which the linear drive is pushed into the carrier. DETAILED DESCRIPTION

[0024] Figure 1 The depicted slide closure 10 is shown with a slide housing 12 and with a slide unit guided longitudinally therein, the support 15 and the linear drive 20 which is present at a distance therefrom and can be inserted laterally therein, wherein only one push rod 13 is shown which projects into a lateral opening 16' of the support 15. Furthermore, a pluggable stroke limiting screw 14 known per se is provided which engages in a longitudinal groove 19 in the push rod 13 in order to serve as a stop for the push rod stroke.

[0025] Such a sliding closure 10 is known per se in terms of its structure and functional mode of operation and is therefore not explained in further detail. It is preferably suitable for a ladle as a container of a continuous casting plant that contains molten steel for casting. However, it can also be used in the non-ferrous metal industry at the pouring spout of other vessels, for example in the case of converters, distribution vessels or also in the case of furnaces.

[0026] In particular, when the vessel is used as a ladle for a continuous casting plant, the linear drive 20 is usually inserted and fastened into the support 15 only after the ladle filled with molten metal has been placed on the rotating tower on the casting platform of the continuous casting plant. This can be done manually or preferably by a manipulator or robot arranged on the casting platform, which first automatically determines the exact position of the support 15 of the sliding closure 10 by means of a recognition system that can be installed therein, and then grabs the linear drive 20, which is preferably designed as a hydraulic piston / cylinder unit, from a storage point by means of a corresponding gripping tool, guides it to the sliding closure 10 and pushes it laterally into the support 15.

[0027] After or during the insertion of the linear drive 20, preferably at the end of the insertion process, its drive rod 20' is coupled to the push rod 13 of the slide unit. This is preferably achieved autonomously in that the clamp-shaped coupling head 11 slides on the front side in the drive rod 20' toward the coaxially arranged push rod 13 of the slide unit and rolls up on the end side in the push rod 13 via the mushroom-shaped coupling flange 13' by means of the pivotable spring-caged clamping jaws 21 and surrounds it in a form-fitting and / or force-fitting manner. A sliding closure with such a coupling is known from the document EP 0875320 B1 and will therefore not be explained in more detail.

[0028] The support 15 consists of a housing 16 with a lateral opening 16', a fastening flange 17 mounted at the front on the slide housing 12, and a C-shaped guide groove 18 formed at the rear in the housing 16 for accommodating a transverse flange 22 of a linear drive 20. The C-shaped guide groove 18 with two grooves arranged parallel to one another and the transverse flange 22 formed in an approximately rectangular shape are dimensioned such that the transverse flange 22 can be inserted into the guide groove with its guide surface 22' in the insertion direction E approximately without play up to the stop 18', in which the drive rod 20' and the push rod 13 are coaxially aligned with each other in their same adjustment direction.

[0029] According to the invention, the support 15 is correspondingly associated with a locking device 30 and the linear drive 20 is associated with a locking device 25, which act together in such a way that after the linear drive 20 is pushed into the support 15 or during the push-in process, preferably at the end of the push-in process, the linear drive 20 is automatically locked in the support 15.

[0030] Advantageously, for unlocking, an adjustment assembly 26 which can be actuated manually or by an operator is provided in the locking device 25 .

[0031] Especially from Figure 3 It can be seen that the locking device 25 of the linear drive 20 very advantageously has an encapsulating housing 28 fastened laterally in the transverse flange 22, a locking element 27 which can slide therein, and a spring device 29, wherein the locking element 27 with its front part 27 ′ can be slid by the spring device 29 into a starting position protruding relative to the encapsulating housing 28, as shown in FIG. Figure 1 As shown in FIG. 1 , the linear drive 20 is not coupled.

[0032] The sliding shoe 31 is provided as a locking means 30 of the bracket 15, which comes into sliding contact with the front part 27' of the locking element 27 when the linear drive 20 is pushed in and / or pushed out, as shown in FIG. Figure 2As shown, the locking element 27 in the encapsulating housing 28 is mounted adjustably perpendicular to the insertion direction E of the linear drive 20. This nearly play-free guidance of the transverse flange 22 with its guide surface 22' in the guide groove 18 ensures that the front part 27' is correctly guided on the sliding shoe 31. The sliding shoe 31 of the locking device 30 is fastened next to the C-shaped guide groove 18 on the exposed end side 15' of the support 15, so that when the linear drive 20 is pushed in and / or pushed out, the sliding shoe cooperates with the locking element 27 of the locking device 25. The locking device 30 or its sliding shoe 31 and the support 15 next to the guide groove 18 can be designed as a single piece.

[0033] The sliding shoe 31 is designed with a ramp-shaped sliding guide 32 extending approximately in the insertion direction E of the linear drive 20, which has a coupling recess 33 for accommodating the front part 27' of the locking element 27 in a locking manner, in which the locking or locking is realized. The recess 33 in the sliding shoe 31 is designed at such a position in the support that at the end of the insertion process, when the transverse flange 22 in the stop 18' is reached, the linear drive 20 is locked and the front part 27' snaps into the recess 33.

[0034] according to Figure 3 The sliding shoe 31 in the recess 33 and the front part 27' which can be inserted therein contact each other with a contact surface 27", 34, which extends approximately perpendicularly to the insertion direction E of the linear drive 20, so that the front part 27' in the sliding shoe 31 is locked by these contact surfaces 27", 34. As a result, locking is always ensured even in the event of operation-related vibrations or shocks in the sliding closure, and the linear drive can be reliably prevented from loosening from the support.

[0035] The manually actuatable adjustment component 26 is fastened transversely to the locking element 27 of the locking means 25 in the linear drive 20. It preferably protrudes vertically away from the linear drive 20 from the encapsulating housing 28 through the longitudinal opening 28' and extends parallel to the transverse flange 20, so that it is easily accessible for actuation. After the casting is completed, after the screw-shaped adjustment component 26 has been adjusted upward and the locking element 27 has thus been moved out of the recess 33, the linear drive 20 can be pulled out of the support 15 of the sliding closure 10. The adjustment component 26 can also be surrounded by a removable protective flap, so that the adjustment component cannot be accidentally actuated in the operating state of the closure.

[0036] When manually removing the linear drive, it is convenient to grasp the transverse flange 22 provided with the handle 24 with one hand and to grasp the handle bar 23 arranged parallel to the transverse flange on the rear side of the hydraulic cylinder with the other hand and thus pull out the linear drive. This makes it possible to achieve rapid unlocking and pulling out by simple manual manipulation in a simple manner.

[0037] Furthermore, there is the advantage that after unlocking, by such a lateral push of the clamping jaws 21 out of the mushroom-shaped coupling collar 13 ′, the coupling head 11 is also disengaged from the push rod 13 of the slide unit at the front in the drive rod 20 ′.

[0038] Furthermore, a suspension element 24' is arranged on the upper side in the linear drive 20, by means of which the linear drive can be held when not in use. Furthermore, a latching rod 46 of a latching mechanism 47 is arranged on the upper side of the support 15, by means of which transport safety is ensured. Laterally in the hydraulic piston / cylinder unit as linear drive 20, couplings 39, 44 for supplying a medium are provided, which are connected to lines (not shown) for the control of the medium.

[0039] Furthermore, the support 15 is associated with a plurality of plug elements 35, 37 and the linear drive 20 is associated with corresponding plug elements 35', to which connecting lines for current and / or for a medium (e.g. gas or air) are connected, in particular from a corresponding external current source, gas source or compressed air source, leading to the sliding closure 10. These connecting lines serve for the current supply of at least one consumer unit, for example for a measuring and evaluation device for early slag detection or for induction heating, while at least one connecting line for the medium serves as a gas seal or for cooling or the like.

[0040] In this way, the male electrical plug element 35 is arranged in the rear end side 15' of the support 15, and the corresponding female electrical plug element 35' is arranged on the upper side of the cylinder in the linear drive 20. The two plug elements 35, 35' are positioned relative to each other in such a way that they can be plugged into each other along the insertion direction E of the linear drive. A connecting line 36' from the outside is guided to the plug element 35' via an angled sleeve 36. At least one connecting line, not shown in more detail, is guided from the plug element 35 via a connecting sleeve 40 along the support 15 into the sliding closure and / or to the pouring spout in the ladle. A self-opening protective valve 38 is depicted in the opening of the plug element 35 into which the female plug element 35' can be plugged, which is closed in the unplugged state of the plug element and prevents the intrusion of contaminating particles.

[0041] In addition, according to Figure 1In the support 15, two plug elements 37 are arranged inside the stop 18' of the guide groove 18, which can be plugged in pairs with plug elements (not shown in more detail) at the front side 42 of the transverse flange 22 when the transverse flange is pushed in. On the one hand, connecting lines (not shown in more detail) in the linear drive 20 are led from these plug elements 37 to an external source, and on the other hand, connecting lines 41, 43 are led to the sliding closure 10. These plug elements 37 are preferably designed as valve plug parts, which are used to let gaseous media, for example air, pass through.

[0042] The present invention has another significant advantage, namely, Figure 2 , it can be seen that after or during the insertion of the linear drive 20 into the support 15, preferably at the end of the insertion process, the locking means 25, 30 lock automatically and the plug elements 35, 35', 37 also plug automatically and thus establish the connection of the connecting lines 36, 41, 43. In addition, after or during the insertion, preferably at the end of the insertion process, the drive rod 20' can be slid forward toward the coaxially arranged push rod 13 of the slide unit and the coupling head 11 is also coupled automatically.

[0043] When the linear drive 20 is removed, however, the plug elements 35 , 35 ′, 37 are released from one another after unlocking by manual or operator-implemented actuation of the adjustment assembly 26 , and the coupling head 11 is also released autonomously from the push rod 13 by a lateral movement away.

[0044] This achievable automatic coupling of the linear drive 20 in the carrier 15 results in extremely simple handling, which is particularly suitable for robotic assembly and / or disassembly of the linear drive 20 , wherein erroneous operation due to incorrect insertion and / or unaccomplished locking can be largely excluded.

[0045] The present invention is fully explained by the above-mentioned embodiments. However, it can also be explained by other variants.

[0046] In principle, the locking device can also be arranged in the opposite way, that is, the encapsulated housing with the locking element that can slide therein, the adjustment assembly fastened to the locking element and the spring means are arranged in the support, while the sliding shoe in the linear drive is arranged so that it can also be locked and / or unlocked in the same sense. For space reasons, the encapsulated housing can advantageously be fastened on the bottom side protruding relative to the support in the exposed end side 15', and the locking element can be moved from bottom to top into the locked position. In the sliding shoe in the linear drive, the recess points downward.

[0047] The locking means can of course be designed differently than shown. Thus, the front part can be received in a positively locking manner in the recess of the sliding shoe as a wedge-shaped piece with a corresponding self-locking contact surface. For example, the adjustment assembly can also be placed above the encapsulated housing and instead be designed in the form of a bolt, a flap, a hook or other shapes.

[0048] Likewise, instead of a transverse flange in the linear drive and a C-shaped guide groove in the support, other guide means, such as a slide or a guide roller, can be provided. Furthermore, the linear drive can be inserted in a direction other than transverse to the adjustment direction of its drive rod, for example in the adjustment direction, or can be inserted into the support and / or removed from the support from the bottom to the top instead. The locking means must then be positioned accordingly in order to fulfill the functions of autonomous locking and preferably manual unlocking.

Claims

1. A slip closure for a vessel containing molten metal, wherein: The sliding closure comprises a sliding housing (12), a sliding unit with a push rod (13) guided longitudinally therein, a support (15) on the sliding housing (12), and a linear drive (20) fastened in the support (15) with a drive rod (20') which can be connected to the push rod (13), wherein the linear drive (20) can be inserted into the support (15) on the sliding housing (12) and can be removed therefrom, preferably transversely to its adjustment direction, and can be locked in the support (15), characterized in that at least one locking device (25, 30) is respectively present and preferably fastened on the linear drive (20) and on the support (15), which are designed to act together in such a way that the linear drive (20) is automatically locked after or during the insertion into the support (15), preferably at the end of the insertion process.

2. The sliding closure according to claim 1, characterized in that A linear drive (20) locked in the support (15) can be unlocked, wherein for this unlocking an adjustment component (26) which can be operated manually or by an operator is provided in the at least one locking device (25, 30).

3. The sliding closure according to claim 1 or 2, characterized in that: One of the locking devices (25) is a slidable locking element (27) having a front part (27'), wherein the front part (27') engages in a recess (33) of the other locking device (30) when locked, wherein the locking element is preferably supported so as to be adjustably transverse to the insertion direction (E) of the linear drive (20).

4. The sliding closure according to claim 3, characterized in that: The locking device (25) of the linear drive (20) comprises an encapsulated housing (28), a locking element (27) which can slide therein, and a spring device (29), wherein the locking element (27) can slide with its front part (27') via the spring device (29) to a position protruding relative to the encapsulated housing (28), and the locking device (30) of the bracket (15) comprises a sliding shoe (31) provided with the recess (33), which is in sliding contact with the front part (27') of the locking element (27) when the linear drive (20) is pushed in and / or pushed out.

5. The sliding closure according to claim 4, characterized in that The sliding shoe (31) has a ramp-shaped sliding guide (32) for sliding contact with the front part (27) and extending at least approximately in the insertion direction of the linear drive, and then has a recess (33) for accommodating the front part (27') of the locking element (27).

6. The sliding closure according to claim 4 or 5, characterized in that: The recess (33) in the sliding shoe (31) is positioned in the insertion direction (E) such that the front part (27') engages in the recess (33) when the linear drive (20) comes to rest against a stop (18') in the support (15) at the end of the insertion process.

7. The sliding closure according to any one of claims 4 to 6, characterized in that The sliding shoe (31) in the recess (33) and the front part (27') contact each other with a contact surface (27", 34) in the locked state, wherein the contact surfaces (27", 34) extend at least approximately perpendicularly to the insertion direction (E) of the linear drive, so that the front part is locked in the sliding shoe.

8. The sliding closure according to any one of claims 4 to 7, characterized in that The linear drive (20) has the drive rod (20') and a protruding transverse flange (22) on the front side, and the bracket (15) has a C-shaped guide groove (18) on the back side for accommodating the transverse flange (22) and thus the linear drive (20), wherein the encapsulated housing (28) of the locking device (25) is arranged laterally in the transverse flange (22) and the sliding shoe (31) is arranged next to the C-shaped guide groove (18) on the back side (15') of the bracket (15), or vice versa, the encapsulated housing is arranged next to the guide groove and the sliding shoe is arranged laterally in the transverse flange.

9. The sliding closure according to any one of claims 1 to 8, characterized in that The actuatable adjustment assembly (26) is fastened transversely to a locking element (27) of a locking device (25) in the linear drive (20) and projects through a longitudinal opening (28') from an encapsulating housing (28) preferably away from the linear drive.

10. The sliding closure according to claim 9, characterized in that In order to remove the transverse flange (22) of the linear drive (20) from the guide groove (18) of the bracket (15), the adjustment assembly (26) can be manipulated upward in the encapsulated housing (28) manually or by an operator, so that the locking element (27) can be unhooked from the recess (33) in the sliding shoe (31) with the front part (27') and the linear drive (20) can be pulled out.

11. The sliding closure according to any one of claims 1 to 10, characterized in that The linear drive (20) and the support (15) are associated in pairs with at least one electrical plug element (35, 35') for electrical connecting lines and / or at least one plug element (37) for at least one connecting line (36, 41, 43) for a gaseous medium, preferably air, which plugs in autonomously after or during the insertion of the linear drive (20) into the support (15), preferably at the end of the insertion process, and the locking means (25, 30) are locked as if autonomously.

12. The sliding closure according to claim 11, characterized in that After or during the insertion of the linear drive (20) into the support (15), preferably at the end of the insertion process, the coupling head (11) of the drive rod (20') of the linear drive (20) can be coupled autonomously to the push rod (13) of the slide unit by axial adjustment.

13. The sliding closure according to claim 11 or 12, characterized in that: When the linear drive (20) is removed from the support (15), the locking means (25, 30) can be unlocked from one another by means of the operable adjustment assembly (26) in the locking means (25, 30), and the plug elements (35, 35', 37) associated in pairs with the linear drive (20) and the support (15) can be released autonomously.

14. The sliding closure according to claim 13, characterized in that When the linear drive (20) is removed from the support (15) after unlocking the locking device, the coupling head (11) of the drive rod (20') can be automatically released from the push rod (13) by moving it away laterally.

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