Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
  • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
  • B22D41/14—Closures
  • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
  • B22D41/38—Means for operating the sliding gate

Definitions

• the invention relates to a sliding closure for a molten metal containing vessel with a guided in a slider housing slide unit with a push rod which is connectable via a coupling with the drive rod of a linear drive, wherein the slider housing a push rod and the drive rod coupling side receiving holder is provided for the linear drive ,
• Slide closures of this type are used, for example, in steel casting, in order to control the melt flow flowing out of the vessel during the casting process and, if necessary, to interrupt it.
• the vessel has to be moved periodically back and forth between the casting platform and the plant delivering the melt.
• the stations linear actuators are each inserted into the holder of the sliding closure, where then their drive rod is coupled to the push rod of the slide unit.
• a designated coupling is described, which facilitates the installation and removal of the linear drive and simplifies the coupling operations.
• the invention has for its object to avoid these disadvantages and to provide a sliding closure of the type mentioned above, which ensures a high level of reliability even in the usual in foundry plants rough operation.
• the holder is provided with a locking device for the linear drive and / or a locking device for the push rod of the slide unit.
• the invention further provides that the locking device for the linear drive has a locking rod attached to the drive rod axially parallel to it, which cooperates with a spring-loaded locking claw attached to the holder. When installed, the latter engages around the locking rod sliding therein on the entire stroke length of the drive and thus ensures that it sits securely in the holder, as long as it is installed therein.
• the locking rod on the coupling side has a recess which can be latched into the locking claw when the drive rod is retracted and then released again from the locking claw.
• the locking or unlocking of the linear drive is carried out automatically when retracting or extending the same with retracted drive rod.
• the locking rod has at its end remote from the coupling to a further recess which is releasable when the drive rod is extended from the locking claw.
• the unlocking of the linear drive also takes place automatically when extending the same with extended drive rod.
• the invention also provides that the locking claw is mounted transversely to the locking rod in a bolt guided in the holder, wherein it is advantageously spreadable by turning or moving the bolt. By pressing the bolt can thus be released at any time, if necessary, the locking of the linear drive.
• the locking device for the push rod of the slider unit has a pivotally mounted in the holder, spring-loaded lever which is provided with a arranged near the pivot axis pawl and arranged at the end remote from the pivot axis of the lever locking pin, wherein the Latch and the locking pin protrude into the holder and interact there with the coupling part of the drive rod or with a stop surface of the push rod.
• the pawl and thus the locking pin are automatically pivoted, whereby the push rod is locked to the locking pin. This prevents the sliding closure from unintentionally opening during subsequent transport within the system.
• the locking means for the push rod may have two pawls projecting into the holder, which are connected to one another by a connecting rod rotatably mounted in the holder and cooperate with stop surfaces of the linear drive and the push rod, which conveniently by a in the push rod transverse to her arranged Hubbegrenzungsbolzen or are formed by a retractable into the holder support plate of the linear drive.
• the two pawls When retracting the linear drive in the holder, the two pawls are swung out and the push rod is freely movable within the holder. If the linear drive is extended, then pivot both pawls again so far that the push rod is locked by the cooperating with its stop surface pawl.
• FIG. 1 shows a sliding closure according to the invention, shown in longitudinal section
• FIG. 2 shows the detail II of FIG. 1 with a cylinder lock for the linear drive in the decoupled state, rotated by 180 ° and shown enlarged,
• FIG. 3 shows a section along the line III-III in FIG. 2
• FIG. 4 shows the detail II from FIG. 1, shown in a side view
• FIG. 5 shows a section along the line VV in FIG. 2
• FIG. 7 shows the detail II of FIG. 1 with a transport lock for the push rod of the slide unit, likewise in the decoupled state, rotated by 180 ° and enlarged
• FIG. 8 shows the detail from FIG. 7, shown in plan view
• FIG. 11 shows the detail of Fig. 7, shown in a side view
• Fig. 11 is a section along the line Xl-Xl in Fig. 7
• Fig. 12 is a side view in Direction of the arrow XII in Fig. 9, shown in perspective,
• FIG. 13 is a side view in the direction of the arrow XIII in Fig. 9, also shown in perspective,
• FIG. 14 shows the detail II from FIG. 1 with a variant of the transport lock, likewise rotated through 180 ° and shown enlarged, FIG.
• FIG. 16 shows a detail along the line XVI-XVI in FIG. 14,
• FIG. 17 shows a section along the line XVII-XVII in FIG. 14,
• FIG a section along the line XVIII-XVIM in Fig. 14, 19 is a side view in the direction of the arrow XIX in Fig. 16, shown in perspective, and
• Fig. 20 is a side view in the direction of the arrow XX in Fig. 16, also shown in perspective.
• the pan 1 shows a sliding closure 1 on a vessel containing molten metal, which is partially shown in the figure as a pan 2.
• the pan 2 has an outer steel shell 3, a refractory lining 4 and an outlet 5, which is formed by a refractory perforated stone 6 and a refractory sleeve 7.
• the outlet 5 of the sliding closure 1 is arranged, consisting of an upper housing part 8 with a refractory base plate 9 inserted therein, a housing frame 10 and a releasably braced in this slide unit 11 with a refractory slide plate 12 and an adjoining spout 13 by longitudinal displacement of the slide unit 11th and the slide plate 12 inserted therein, the outlet 5 can be brought from the illustrated open position into a throttling or closing position.
• the linear drive 17 is usually mounted on the filled with molten metal and equipped with the closed sliding closure 1 pan 2 when it is placed on the casting platform. After emptying the pan of the linear actuator 17 is removed again from the pan. The pan is then transported by crane away from the casting platform to a pans place. There, the described process is repeated with a drive stationed at Pfannenplatz.
• a push rod 14 and the drive rod 16 clutch side receiving bracket 18 is provided for the linear drive 17 is on the slide housing 8, 10, a push rod 14 and the drive rod 16 clutch side receiving bracket 18 is provided.
• the clutch 15 located there is designed as a dog clutch. As can be seen from Fig.
• a locking device 21 is arranged for the linear drive 17, which, as shown in FIGS. 2 to 6, composed of a locking rod 22 and cooperating with her locking claw 23.
• the locking bar 22 is fastened to a flange 24 of the drive rod 16 in the region of its coupling part 20. It is aligned axially parallel to the drive rod 16.
• the locking claw 23 is mounted transversely to the locking bar 22 in a bolt 25 which is guided in the holder 18. Your two claw elements are therefore held by the bolt 25. By removing the bolt 25, the jaw members can be released if necessary from the holder, whereby the locking of the linear drive is released.
• the locking rod 22 has two recesses formed as annular grooves 26, 27, which correspond to the stroke end positions of the drive rod 16.
• the diameter of the annular groove 26 is dimensioned so that when installing the linear drive 17 in the holder 18 with retracted drive rod, the annular groove 26 in the locking claw 23rd can engage, while they can solve the extension of the linear actuator 17 from the Verriegeiungsklaue 23.
• the diameter of the annular groove 27 is in turn dimensioned so that it can be released from the holder 18 during extension of the linear drive 17 from the locking claw 23. It is thus possible, if necessary, to reduce the linear drive even when the drive rod 16 is extended.
• the locking rod 22 also serves as anti-rotation of the drive rod 16th
• the sliding closure according to FIGS. 7 to 13 is equipped with a locking device 28 for the push rod 14. It consists of a pivotally mounted in the holder 18 lever 29 with a cam 31 near the pivot axis 30 and a locking pin 32 at the end remote from the pivot axis lever end, wherein the cam 31 and the locking pin 32 protrude into the holder 18 and there with the coupling part 20th the drive rod 16 or with a stop surface 33 of the push rod 14 cooperate.
• An inserted into the push rod 14 transverse to the longitudinal axis Hubbegrenzungsbolzen 34 with a handle 35 forms the stop surface 33rd
• the pivot axis 30 of the lever 29 is seated in a bearing block 36 which is fixed to the bracket 18.
• the lever 29 is acted upon by a spring 37 with adjusting screw 38 in Einschwenkraum.
• Fig. 9 shows the locking device 28 with pivoted lever 29.
• the drive rod 16 is retracted while the push rod 14 assumes its end position with the slider closed.
• the former is extended as far as in the holder 18 until the coupling between the two is made.
• it actuates the cam 31, whereby the lever 29 is swung out and this takes out the locking pin 32 from the movement path of the Hubbegrenzungsbolzens 34.
• the push rod 14 is freely movable within its working stroke, as long as the drive rod 16 and the push rod 14 are coupled.
• the locking device 28 for the push rod 14 has two pawls 47, 48 projecting into the holder 18, which are connected to one another by a connecting rod 39 rotatably mounted in bearing blocks 43 and with stop faces 41 of the push rod 14 or . of the linear drive 16 cooperate.
• This stop surface 41 of the linear drive 17 can be inserted in a support plate 42 of the linear drive which can be inserted into the holder 18. bes provided, while the abutment surface of the push rod 14 is located at a survey of the same.
• the likewise automatically acting locking device 28 according to FIGS. 14 to 20 operates analogously to the locking device according to FIGS. 7 to 13.
• the pawls 47, 48 are pivoted into this holder 18.
• the support plate 42 abuts with the stop surface 41 against the pawl 48 and pushes it out so far that the connected with her via the connecting rod 39 pawl 47 pivots out of the path of movement of the push rod 14.
• the push rod 14 is free to move, as long as the linear drive 17 is installed in the holder 18.
• both pawls 47, 48 can swing back, with the result that the pawl 47 then protrudes again into the movement path of the stroke limiting bolt 34. This ensures that the sliding closure does not open unintentionally after removal of the linear drive during its transport, because the push rod 14 is then locked by the pawl 47 in cooperation with the stop at the push rod.
• the sliding closure according to FIGS. 2 to 6 is equipped only with a cylinder lock in the form of the locking device 21 for the linear drive 17.
• the cylinder lock is combined with a transport lock in the form of the locking device 28 for the push rod 14. It is thus possible within the scope of the invention to have both locking devices in the sliding closure. individually or together, especially as their functions complement each other in the latter case.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
• Mechanically-Actuated Valves (AREA)
• Closures For Containers (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (2)

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Family Applications (1)

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• 2008
  • 2008-06-23 RU RU2010105240/02A patent/RU2461444C2/ru not_active IP Right Cessation
  • 2008-06-23 EP EP08773580A patent/EP2173506B1/fr not_active Not-in-force
  • 2008-06-23 CN CN2008800248870A patent/CN101808766B/zh not_active Expired - Fee Related
  • 2008-06-23 ES ES08773580T patent/ES2365580T3/es active Active
  • 2008-06-23 WO PCT/EP2008/005039 patent/WO2009010153A1/fr active Application Filing
  • 2008-06-23 US US12/669,085 patent/US8371484B2/en not_active Expired - Fee Related
  • 2008-06-23 PL PL08773580T patent/PL2173506T3/pl unknown
  • 2008-06-23 AT AT08773580T patent/ATE509720T1/de active
  • 2008-06-23 KR KR1020107001863A patent/KR101518523B1/ko not_active IP Right Cessation
  • 2008-06-23 JP JP2010516388A patent/JP5156095B2/ja not_active Expired - Fee Related

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