WO2020074645A1 - Cage de laminoir pour le laminage d'un produit métallique plat large - Google Patents

Cage de laminoir pour le laminage d'un produit métallique plat large Download PDF

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Publication number
WO2020074645A1
WO2020074645A1 PCT/EP2019/077486 EP2019077486W WO2020074645A1 WO 2020074645 A1 WO2020074645 A1 WO 2020074645A1 EP 2019077486 W EP2019077486 W EP 2019077486W WO 2020074645 A1 WO2020074645 A1 WO 2020074645A1
Authority
WO
WIPO (PCT)
Prior art keywords
support
crosshead
roll stand
stand
bearing
Prior art date
Application number
PCT/EP2019/077486
Other languages
German (de)
English (en)
Inventor
Peter STROICK
Julia MOSCH
Jörn SOHLER
Original Assignee
Sms Group Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sms Group Gmbh filed Critical Sms Group Gmbh
Publication of WO2020074645A1 publication Critical patent/WO2020074645A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/203—Balancing rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting

Definitions

  • Roll stand for rolling a flat metal product
  • the invention relates to a roll stand for rolling a flat metal product, comprising at least one roll stand with at least one upper stand cross member, at least one balancing cylinder supported on the upper stand cross member, at least one crosshead connected to the balancing cylinder, at least two linearly displaceable connected to the crosshead via tie rods the roller block arranged bearing blocks, at least one upper support roller rotatably mounted on the bearing blocks and at least one support device for supporting the crosshead on the upper stand cross member.
  • a so-called backup roller balancing in which the dead weight of the top backup roller, including the chocks or bearing blocks, over which the top backup roller is slidably arranged on a roller stand of the roll stand, is compensated by a balancing cylinder.
  • the bearing blocks are conventionally connected to an upper crosshead of the roll stand via tie rods mounted in bolts.
  • the crosshead is connected to the balancing cylinder by a bolt, which in turn is supported on an upper column cross-member of the roller stand.
  • the upper backup roll During maintenance work, for example when changing the roll or changing the stand roll, the upper backup roll must be raised by means of the balancing cylinder and held in a certain raised position for a certain time. These raised positions must be secured so that there is no pressure drop in the balancing cylinder Lowering the upper backup roller and thus endangering people or causing damage.
  • a rotating sleeve according to DE 10 2006 032 813 A1 can be used for this purpose, which is installed radially around the outside of the balancing cylinder.
  • the rotating sleeve is turned, thereby securing various raised positions of the crosshead.
  • a rotating sleeve only a limited number of positions that can be supported can be realized.
  • the use of a rotating sleeve only makes sense for new designs, as machined surfaces are required.
  • Dead weights are then derived from these sheets onto the bolts, which in turn are stored in bearing blocks.
  • the pedestals transfer the forces into the upper column cross member. Since securing via the tie rods or tie rod plates is not possible - these components do not withstand the loads - and the above-mentioned rotating sleeve is not a solution in this case, another solution had to be found. In addition, there is often not enough space to dimension the tie rods or tie rod plates larger.
  • CN 103 521 527 B discloses a device for replacing one
  • the device has support plates, a connecting plate, a support plate, a rib plate, a bearing plate and a hydraulic lifting cylinder.
  • Lifting rings are welded to the upper ends of the two support plates, rectangular notches being formed in the lower sections thereof.
  • the support plates are connected to a frame by the connecting plate and the rib plate, and the hydraulic jack is attached to the support plate on the inside of the bearing plate at the lower part of the frame.
  • the exchange device is raised to be arranged on the top of a balancing bar of the balancing cylinder and a piston rod crossing.
  • the hydraulic lifting cylinder is used to attach a hinge pin to the
  • CN 202 824 121 U discloses a backup roller balancing device having a main balancing beam, a balancing cylinder, balancing pull rods, a right balancing beam, a left balancing beam and pin shafts.
  • the balancing cylinder of the main balancing beam is located in the middle of the main balancing beam.
  • the ends of the main balance beam are connected to the balance tie rods.
  • Balancing beams are connected to the balancing pull rods by the pin shafts.
  • the lower end of each balancing tie rod has a single O-ring structure and the upper ends of the right balancing beam and the left balancing beam have a double O-ring structure.
  • CN 203 426 158 U discloses a safety protection device with an upper main balancing beam assigned to a support roller.
  • a tie rod holder is arranged on the upper balancing beam.
  • a protective pull rod is articulated in a vertical direction on the protective device.
  • An upper section of the protective pull rod is arranged on the pull rod holder, a damping disk spring being arranged on the protective pull rod in the manner of a sleeve.
  • the protective pull rod is used to connect the protective device to the main balancing beam, so that the
  • JP S61 20614 A discloses a cradle base with a
  • Feed roll take-up rail that is installed in advance on a backup roller carriage.
  • a lift rail is raised so that the top of the lift rail coincides with a height of the feed roller take-up rail.
  • a feed roller unit is slid and placed on the feed roller take-up rail by the lifting rail and is fixed by hooking a chain block of a suspension piece of a head piece guide. A chain block for a swivel stop is also hooked on.
  • the head piece guide is raised, the feed roller unit is raised, the support roller carriage is temporarily pulled out to the outside of a housing and onto the take-up frame base.
  • a pick-up base is set and the backup roller carriage is loaded into the housing.
  • the head piece guide is then lowered, the feed roller unit is pulled out and placed on the receiving base, and the support roller carriage is pulled out of the housing.
  • An object of the invention is to provide a securing device for various raised mounting positions of an upper crosshead of a roll stand which supports an upper support roller.
  • a roll stand according to the invention for rolling a flat metal product has at least one roll stand with at least one upper stand cross member, at least one balancing cylinder supported on the upper stand cross member, at least one with the balancing cylinder connected crosshead, at least two bearing blocks connected to the crosshead via linearly displaceably arranged on the roller stand, at least one upper support roller rotatably mounted on the bearing blocks and at least one support device for supporting the crosshead on the upper stand cross member, wherein the support device has at least one on one Side of the crosshead arranged bearing pin and at least one support lever arranged pivotably about a pivot axis on the upper stator cross-member, the support lever having at least two support surfaces which can be brought into contact with the bearing journal and are circumferentially offset with respect to the pivot axis and which are arranged at different distances from the pivot axis are.
  • roller means an upper backup roller, a lower backup roller, an upper work roller or a lower work roller.
  • At least two raised positions of the upper crosshead of the roll stand brought about by means of the balancing cylinder can be secured against the upper stand cross member of the roll stand by means of the support device. Since the upper support roller is suspended from the crosshead via the tie rods and is thus raised together with the crosshead, the raised positions of the upper support roller are consequently also secured by means of the support device according to the invention. Such raised positions are particularly necessary for performing a roll or roll change in which a (worn) roll and / or at least one worn stand roll arranged on the inlet or outlet side is replaced by a new roll or stand roll.
  • the respective raised position of the crosshead or the upper support roller is secured by pivoting the support lever about the pivot axis after lifting the crosshead in such a way that the support lever with one of its support surfaces supports the bearing journal on the side of the upper column cross-member, for which purpose the crosshead can be lowered by means of the balancing cylinder after the pivoting of the support lever until the bearing journal contacts the support surface of the support lever.
  • the support lever is, as it were, clamped between the bearing journal and the upper column cross-member and at least partially transmits a total weight to the upper column cross-member, which is based on the weight of the upper support roller, the weight of the bearing blocks, the weight of the tie rods and the weight of the crosshead and possibly arranged on it Bolt results.
  • the support lever can be pivotably arranged on the upper column cross member via at least one pivot bearing, which defines the pivot axis or its position.
  • the support lever can, in particular monolithically, be made of a metallic material.
  • the support lever can also have three, four or more support surfaces which can optionally be brought into contact with the bearing journal and which are circumferentially offset with respect to one another with respect to the pivot axis and which are arranged at different distances from the pivot axis.
  • the support lever can thus have its own support surface for each raised position of the crosshead or the upper support roller to be secured.
  • the respective support surface of the support lever can have a shape which is adapted to or complementary to an outer contour of the bearing journal. In particular, the respective support surface can be trough-shaped.
  • the support lever can be pivoted automatically by means of at least one controllable actuator of the support device.
  • a pivot plane of the support lever, on which the pivot axis is perpendicular, can be arranged parallel to a longitudinal central axis of the upper supporting roller or a transverse side of the crosshead running perpendicular to the longitudinal side be.
  • the journal can be arranged on a long side or a transverse side of the crosshead.
  • the pivot axis of the support lever can run parallel or transversely to a longitudinal center axis of the bearing pin.
  • the roll stand is used to hold and guide the backup rolls and work rolls of the roll stand.
  • the roll stand has lateral stand sections on which bearing blocks for the individual rolls are guided in a linearly displaceable manner and which are rigidly connected to one another at their upper end sections via the upper stand cross member
  • the balancing cylinder is supported on the bottom on the upper column cross member and carries the crosshead when the support device is inactive, the
  • Balancing cylinder is preferably articulated centrally to the crosshead via a bearing pin.
  • the two tie rods can also be connected in an articulated manner to the crosshead via a bearing pin, the tie rods being connected to opposite end sections of the crosshead.
  • the support device can also have two or more corresponding support levers and bearing journals.
  • the support device can have four support levers, which are arranged in pairs on opposite sides of the crosshead.
  • the support device can absorb relatively large forces and is therefore very robust and very suitable for securing the raised positions of the crosshead or the upper support roller. Due to the relatively simple structure of the support device, the roll stand according to the invention is easy to operate or to control.
  • the roll stand according to the invention can be part of a rolling mill or form it with which metallic flat products can be rolled.
  • a wide metallic flat product is to be understood as a strip-shaped rolling stock, whose thickness is many times smaller than a width of the rolling stock.
  • the wide metallic flat product can be a sheet, for example.
  • the roll stand according to the invention can be provided in the course of a new production.
  • an existing roll stand can be converted to form a roll stand according to the invention.
  • This retrofitting of an existing conventional roll stand to form a roll stand according to the invention can be implemented inexpensively, since existing components of the conventional roll stand, such as the crosshead and the tie rods, can continue to be used. This results in a relatively small amount of conversion work and costs.
  • the support device has at least one working cylinder which is supported on the upper column cross member and is connected to the support lever.
  • the working cylinder serves to pivot the support lever around the pivot axis.
  • the working cylinder can serve to secure the respective support position of the support lever.
  • the working cylinder can be articulated to the upper column cross member via at least one bearing block.
  • the working cylinder can be, for example, a hydraulic cylinder, an electromechanical cylinder or a pneumatic cylinder.
  • the working cylinder has at least two support positions.
  • the various support positions of the working cylinder can be approached or called up, each of which is assigned a specific support position of the support lever in order to be able to pivot the support lever into the respective support position in the desired manner.
  • the number of support positions of the working cylinder preferably corresponds to the number of support surfaces of the support lever.
  • the support device has at least two working cylinders arranged in series. This can make the the working cylinder row arrangement formed at least two working cylinders are extended and retracted in steps, each extension stage of the working cylinder row arrangement being assigned a specific supporting position of the supporting lever.
  • the number of working cylinders arranged in series is, for example, smaller by the value one than the number of support positions of the support lever provided.
  • the support device has at least one sensor for detecting the current position of the support lever.
  • the position of the support lever can be monitored by means of the sensor in order to be able to detect or ensure proper pivoting of the support lever and to be able to position the support lever exactly, which increases the safety of the support device.
  • the sensor is a displacement sensor or a proximity switch.
  • the proximity switch can be used to contactlessly determine whether the support lever has assumed a desired support position.
  • the number of proximity switches can correspond to the number of support positions of the support lever provided.
  • the displacement encoder can be designed, for example, as a rotary encoder with which the current pivot position of the support lever about the pivot axis can be detected.
  • the bearing journal is an end section of a bearing bolt which is guided through the crosshead and via which at least one tie rod or the balancing cylinder is connected to the crosshead, or a section of the crosshead.
  • the bearing pin When using the bearing pin as a bearing pin, no additional bearing pin has to be arranged or formed on the crosshead. If the journal is a section of the crosshead, the journal can be made monolithically with the crosshead.
  • the support device has, on opposite sides of the crosshead, at least one bearing journal and at least one support lever, the bearing journals being aligned with one another and the support levers being rigidly connected to one another via at least one connecting element.
  • connection of the two support levers to one another via the connecting element requires only a single working cylinder or a single above-mentioned working cylinder row arrangement in order to pivot both supporting levers together.
  • a working cylinder or a working cylinder row arrangement can thus be saved.
  • the support levers are arranged on the upper column cross member so as to be pivotable about the same pivot axis.
  • the support lever has a central support section and two lateral support sections arranged on opposite sides of the central support section, a support surface formed on the central support section being arranged at a greater distance from the pivot axis than the support surfaces formed on the lateral support sections and wherein the support surface arranged on the one side support section is arranged at a greater distance from the pivot axis than the support surface formed on the other side support section.
  • Figure 1 is a schematic and perspective view of a
  • FIG. 1 is a schematic and perspective view of the rolling stand shown in Figure 1 in a first support state
  • Figure 3 is a schematic and perspective view of the rolling stand shown in Figure 1 in a second support state
  • Figure 4 is a schematic and perspective view of the rolling stand shown in Figure 1 in a third support state.
  • FIG. 1 shows a schematic and perspective illustration of an exemplary embodiment of a roll stand 1 according to the invention for rolling a flat metal product, not shown, in an assembled state.
  • the roll stand 1 has a roll stand 2 with an upper stand cross member 3, a balancing cylinder 4 supported on the upper stand cross member 3, a crosshead 5 connected to the balancing cylinder 4, two crossbars 5 connected to the crosshead 5 via pull rods 6, arranged linearly displaceably on the roll stand 2, Bearing blocks, not shown, an upper support roller, not shown, rotatably mounted on the bearing blocks, and at least one support device 7 for supporting the crosshead 5 on the upper column cross member 3.
  • the support device 7 has four journals 8, which are arranged in pairs on opposite longitudinal sides 9 of the crosshead 5.
  • Each bearing pin 8 is an end section of a bearing bolt 10 which is guided through the crosshead 5 and via which the respective pull rod 6 is connected to the crosshead 5 in an articulated manner.
  • the support device 7 has four support levers 11, which are arranged in pairs on the opposite longitudinal sides 9 of the crosshead 5.
  • Each support lever 11 is arranged on the upper column cross member 3 so as to be pivotable about a pivot axis 13 by means of its own pivot bearing 12.
  • two support levers 11 arranged on the opposite longitudinal sides 9 of the crosshead 5 are each arranged pivotably about the same pivot axis 13.
  • the pivot axes 13 run parallel to a longitudinal center axis 14 of the respective bearing pin 8.
  • the bearing pins 8, which are arranged on the opposite longitudinal sides 9 of the crosshead 5 with respect to the respective bearing pin 10, are arranged in alignment with one another.
  • Each support lever 11 has a central support section 15 and two lateral support sections 16 and 17 arranged on opposite sides of the central support section 15.
  • a support surface 18 formed on the central support section 15 is arranged at a greater distance from the respective pivot axis 13 than the support surfaces 22 and 19 formed on the lateral support sections 16 and 17.
  • the support surface 19 arranged on the one lateral support section 17 is at a greater distance arranged to the pivot axis 13 than that on the other side
  • Support section 16 formed support surface 22nd
  • the support device 7 has, for each support lever 11, a working cylinder 21, which is articulated via a bearing block 20 on the upper column cross member 3 and is articulated to the respective support lever 11.
  • the respective working cylinder 21 can have three support positions.
  • the support levers 11, which are arranged so as to be pivotable about the respective common pivot axis 13, can be connected to one another in a rigid or articulated manner via at least one connecting element (not shown).
  • the support levers 11 which can be pivoted about the respective common pivot axis 13 can be arranged by means of a single one Working cylinders 21 are pivoted so that a total of two working cylinders 21 can be omitted.
  • the support device 7 can have at least one sensor (not shown) for detecting the current position of the respective support lever 11.
  • the sensor can be a position sensor, not shown, or a proximity switch, not shown.
  • the crosshead 5 has been raised to the maximum by means of the balancing cylinder 4.
  • the support levers 11 are in the first support positions. These support positions can be secured by means of the working cylinder 21.
  • FIG. 2 shows a schematic and perspective illustration of the roll stand 1 shown in FIG. 1 in a first supporting state.
  • This support state results from the assembly state shown in FIG. 1 in that the crosshead 5 has been lowered by means of the balancing cylinder 4 until the bearing pins 8 rest on the support surfaces 18 of the support levers 11.
  • This support state of the roll stand 1 is produced in particular in order to be able to carry out preparatory work for an upcoming change of stand rolls, not shown, in a work-safe manner.
  • FIG. 3 shows a schematic and perspective illustration of the roll stand 1 shown in FIG. 1 in a second supporting state. This support state is established in that the crosshead 5 is first by means of the
  • Balancing cylinder 4 is raised and then the support lever 11 are pivoted into the second support positions shown. After that it will
  • This support state of the roll stand 1 is produced in particular in order to be able to change the roll, not shown, in a work-safe manner.
  • the shown Support positions of the support lever 11 can be secured by means of the working cylinder 21.
  • FIG. 4 shows a schematic and perspective illustration of the roll stand 1 shown in FIG. 1 in a third supporting state.
  • This support state is established in that the crosshead 5 is first raised by means of the balancing cylinder 4 and then the support levers 11 are pivoted into the third support positions shown. Then the crosshead 5 is lowered by means of the balancing cylinder 4 until the bearing pins 8 rest on the support surfaces 22 of the support levers 11.
  • This support state of the roll stand 1 is produced in particular in order to be able to carry out a change of stand rolls, not shown, in a work-safe manner.
  • the shown support positions of the support lever 11 can be secured by means of the working cylinder 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

La présente invention concerne une cage de laminoir (1) pour le laminage d'un produit métallique plat large, présentant au moins un montant de laminoir (2) comportant au moins une barre de montant supérieure (3), au moins un cylindre d'équilibre (4) appuyé contre la barre de montant supérieure (3), au moins une traverse (5) reliée au cylindre d'équilibre (4), au moins deux blocs de support disposés coulissant linéairement sur le montant de laminoir (2), reliés à la traverse (5) par le biais de tiges de traction (6), au moins un cylindre d'appui supérieur rotatif sur les blocs de support et au moins un dispositif d'appui (7) pour appuyer la traverse (5) contre la barre de montant supérieure (3). Pour mettre à disposition une sécurité pour diverses positions de montage élevées de la traverse (5), le dispositif d'appui (7) comprend au moins un tourillon de palier (8) disposé d'un côté (9) de la traverse (5) et au moins un levier d'appui (11) disposé pivotant autour d'un axe de pivotement (13) sur la barre de montant supérieure (3), le levier d'appui (11) présentant au moins deux surfaces d'appui (18, 19, 22) qui sont disposées à différents intervalles par rapport à l'axe de pivotement (13), placées en décalage l'une par rapport à l'autre sur le pourtour par rapport à l'axe de pivotement (13), et peuvent être mises en contact sélectivement avec le tourillon de palier (8).
PCT/EP2019/077486 2018-10-12 2019-10-10 Cage de laminoir pour le laminage d'un produit métallique plat large WO2020074645A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102018217529.2 2018-10-12
DE102018217529 2018-10-12
DE102019210273.5 2019-07-11
DE102019210273.5A DE102019210273A1 (de) 2018-10-12 2019-07-11 Walzgerüst zum Walzen eines metallischen Breitflachprodukts

Publications (1)

Publication Number Publication Date
WO2020074645A1 true WO2020074645A1 (fr) 2020-04-16

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Application Number Title Priority Date Filing Date
PCT/EP2019/077486 WO2020074645A1 (fr) 2018-10-12 2019-10-10 Cage de laminoir pour le laminage d'un produit métallique plat large

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DE (1) DE102019210273A1 (fr)
WO (1) WO2020074645A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1382100A (fr) * 1961-10-20 1964-12-18 United Eng Foundry Co Dispositif pour la mise en position de pièces mobiles telles que des cylindres de laminoirs et sa combinaison avec un laminoir ou appareil similaire
JPS6120614A (ja) 1984-07-06 1986-01-29 Kawasaki Steel Corp 厚板圧延機におけるフイ−ドロ−ラ−ユニツトの組替え方法
WO2008006571A1 (fr) * 2006-07-14 2008-01-17 Sms Demag Ag Dispositif de verrouillage rotatif de l'équilibre des rouleaux de support de cages de laminoir
CN202824121U (zh) 2012-08-28 2013-03-27 天津天重中直科技工程有限公司 一种易拆装的支撑辊平衡装置
CN103521527A (zh) 2013-10-09 2014-01-22 鞍钢股份有限公司 一种厚板轧机支撑辊平衡缸更换装置及方法
CN203426158U (zh) 2013-07-04 2014-02-12 新疆八一钢铁股份有限公司 板材轧机导卫防坠落安全保护装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1382100A (fr) * 1961-10-20 1964-12-18 United Eng Foundry Co Dispositif pour la mise en position de pièces mobiles telles que des cylindres de laminoirs et sa combinaison avec un laminoir ou appareil similaire
JPS6120614A (ja) 1984-07-06 1986-01-29 Kawasaki Steel Corp 厚板圧延機におけるフイ−ドロ−ラ−ユニツトの組替え方法
WO2008006571A1 (fr) * 2006-07-14 2008-01-17 Sms Demag Ag Dispositif de verrouillage rotatif de l'équilibre des rouleaux de support de cages de laminoir
DE102006032813A1 (de) 2006-07-14 2008-01-24 Sms Demag Ag Vorrichtung zur Drehverriegelung der Stützwalzenbalancierung von Walzgerüsten
CN202824121U (zh) 2012-08-28 2013-03-27 天津天重中直科技工程有限公司 一种易拆装的支撑辊平衡装置
CN203426158U (zh) 2013-07-04 2014-02-12 新疆八一钢铁股份有限公司 板材轧机导卫防坠落安全保护装置
CN103521527A (zh) 2013-10-09 2014-01-22 鞍钢股份有限公司 一种厚板轧机支撑辊平衡缸更换装置及方法

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