US3905485A - Roll changing device for a rolling mill and the like - Google Patents

Roll changing device for a rolling mill and the like Download PDF

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Publication number
US3905485A
US3905485A US455423A US45542374A US3905485A US 3905485 A US3905485 A US 3905485A US 455423 A US455423 A US 455423A US 45542374 A US45542374 A US 45542374A US 3905485 A US3905485 A US 3905485A
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US
United States
Prior art keywords
rolls
counterweight
mill
car
roll
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
US455423A
Other languages
English (en)
Inventor
Charles Storer Shumaker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
United Engineering Inc
Original Assignee
Wean United Inc
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 Wean United Inc filed Critical Wean United Inc
Priority to US455423A priority Critical patent/US3905485A/en
Priority to GB6528/75A priority patent/GB1490020A/en
Priority to CA220,399A priority patent/CA1015687A/en
Priority to JP3248575A priority patent/JPS5440065B2/ja
Priority to DE19752513444 priority patent/DE2513444A1/de
Priority to ES436090A priority patent/ES436090A1/es
Priority to FR7509694A priority patent/FR2265466A1/fr
Application granted granted Critical
Publication of US3905485A publication Critical patent/US3905485A/en
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEAN UNITED, INC., A CORP.OF OH
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEAN UNITED, INC., A CORP. OH.
Assigned to WEAN UNITED, INC. reassignment WEAN UNITED, INC. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). TO RELEASE SECURTIY DOCUMENT RECORDED AT REEL, FRAME 4792/307 RECORDED FEB. 26, 1987 Assignors: PITTSBURGH NATIONAL BANK
Assigned to UNITED ENGINEERING ROLLING MILLS, INC. reassignment UNITED ENGINEERING ROLLING MILLS, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WEAN INCORPORATED
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B21B31/103—Manipulators or carriages therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S414/00—Material or article handling
    • Y10S414/124—Roll handlers

Definitions

  • the disclosure of this invention relates to a rail guided car adapted to be located on the operators side of the rolling mill for engaging the adjacent end of a set of work rolls of the mill for removing and replacing the roll set relative to the mill.
  • the car supports the rolls in a cantilever fashion and includes a counterweight which is readily and accurately adjustable to permit accurate control of the roll set when being lowered in the mill.
  • the car also includes a linkage system for the member that engages the ends of the rolls for assuring that the rolls are maintained parallel to a desired plane even though the rolls are adjustable while carried by the car.
  • the object of the present invention to provide a device for changing one or more rolls of a rolling mill or like devicewhich will not require the services of a crane or alterations to the mill or device itself and which will permit accurate, positive, and relatively rapid removal and replacement of the roll thereby eliminating any possible damage to the adjacent parts, including roll damage.
  • said car including means on the car for cantileverly supporting the roll or rolls, and a counterweight which is readily and accurately adjustable to permit accurate control of the roll or rolls when being lowered in the mill.
  • a still further object of the present invention is to provide the aforesaid car with a linkage system for the means that supports the roll or rolls for assuring that the roll or rolls will be maintained parallel to a desired plane even though the roll or rolls are vertically adjust able while carried by the car.
  • FIG. 1A is an elevational view of a roll carrying car constructed in accordance with the present invention arranged on the operator's side of a rolling mill showing the car in its inoperative position;
  • FIG. 1B is a view similar to FIG. 1A, showing the'car in an operative position adjacent the rolling mill;
  • FIG. 2 is an enlarged plan view of the car shown in FIGS. 1A and 18;
  • FIG. 3 is a sectional view taken along lines 3-3 of FIG. 2;
  • FIG. 4 is an end view taken on lines 44 of FIG. 2
  • FIG. 1A there is shown a work roll changing car 10 being supported on a pair of spaced parallel rails 12 arranged on the operators side of a rolling mill and which extends, as will be seen later, from a position remote from the window of the mill to a position adjacent thereto.
  • the car engages the rails 12 by two pairs of wheels 14 and 16, the wheels 16 being driven by a chain and hydraulic gear motor drive 18. While the other important elements of the car 10 will be described later in connection with FIGS.
  • FIG. 1A supporting the set of rolls 24 is a platform 28 of a sideshifting device 30.
  • the rolls shown in FIG. 1A represent a new set of rolls which have been set on the platform 28 in readiness for insertion into the mill after the worn roll set presently in the mill has been removed therefrom.
  • the platform 28 is positioned to the left or right of the mill window so that in the position of the elements shown in FIG. 1A the car 10 is free to move over the rails 12 pass the rolls 26.
  • the side-shifter 30 will have a second platform similar to the platform 28 which will be moved independently of the platform 28 for supporting the worn roll set when brought from the mill by the car 20 and lowered onto the second platform after it has been brought into a position in front of the car once the car is moved from the mill to the position shown in FIG. 1A.
  • One of the piston cylinder assemblies of the platforms is shown at 32 in FIG. 1A along with the pair of rails 34 on which the platform are supported and moved into and out of their position in front of the mill.
  • FIG. 1B the car 20 is illustrated in phantom in a position adjacent a four-high rolling mill 36 and having its member 20 engaging in a cantilever fashion, the adjacent ends of a set of worn work rolls 38.
  • the rails 12 extend to a position adjacent the mill 36 so that the car can be properly positioned to remove and insert worn and new rolls respectively.
  • the movement of the car to the location shown in FIG. 1B is not interfered with by the platform 38 or the rolls 26 because at this time and which is true of the second platform they have been moved to opposite sides of the rails 12.
  • a counterweight 40 being trunnion mounted at its front end by a shaft 42.
  • the shaft 42 is supported at the top of two spaced-apart pedestals 44 constructed as part of the frame 46 of the car 10.
  • the counterweight 40 extends to the left of the shaft 42 as viewed in FIGS. 2 and 3 into parts 40a between which parts is inserted the member 20 and pivotally connected to the parts 40a by a shaft 48.
  • the lower end of the member 20 is similarly pivotally connected to a pair of links 50 by a shaft 52.
  • the other end of the links 50 is pivotally secured to the frame 46 by a shaft 54.
  • the pivotal construction of the parts 40a of the counterweights and the links 50 and the fact that these parts 40a and the links 50 are equal in length with the shaft 42 and 54 being arranged in the same vertical plane presents a construction that will allow the member 20 and rolls carried thereby to be raised and lowered while maintaining the rolls parallel to the working position they assumed when they are in the mill 36.
  • the vertical movement of the roll carrying member 20 is accomplished by a piston cylinder assembly 56 arranged to extend between the frame 46 and the counterweight 40 at the end of the car 10 opposite the member 20.
  • the piston cylinder assembly is single acting with a variable pressure control and arranged to lift the counterweight 40 and, hence, to lower the member 20 and rolls carried thereby.
  • the extent of upward movement of the counterweight 40 is controlled by a motorized jack 58 which needs to be only of a small capacity sufficient to move against the pressure of the piston cylinder assembly 56 when it is required to lower the member 20.
  • the lower end of the rod of the jack passes through an opening in the frame 46 and to which is secured a pair of stop plates 60.
  • the phantom showing of the stop plates 60 in FIG. 4 indicates the lower adjust ment of the jack and the maximum upward range of movement of the counterweight 40.
  • the counterweight is designed to move upwardly on operation of the piston cylinder assembly 56, hence lowering the rolls until the prepositioned stop plates 60 hit the upper part of the frame 46.
  • the weight of the counterweight which is 5 to percent greater than the set of roll assemblies, will lower the counterweight and raise the rolls until the piston of the assembly 56 rests on the bottom of its cylinder or an adjustable stop, not shown.
  • the total weight of a pair of work rolls of the type illustrated in FIG. 1 will be of the order of 40,000 lbs.
  • the jack 58 is adjusted by a pair of hand wheels 62 arranged at the front of the counterweight 40, the hand wheels being connected to the jack through a miter gear drive 64 and a shaft 66.
  • the car 10 In operation, and in referring to removing the worn rolls 38 from the mill 36, the car 10 will be brought to the position shown in phantom in FIG. 13 with the pressure on the piston cylinder assembly 56 and the member positioned by operation of the piston cylinder assembly, and if necessary, the jack 58 to allow the openings 22 to be aligned with the ends of the rolls 38.
  • the rolls are engaged by the member 20 and the pressure in the piston cylinder assembly 56 is exhausted to raise the rolls to a position shown in FIG. 18 where the lower work roll 38 is lifted free of the lower back-up roll and the upper work roll assumes a spacedrelationship with the upper back-up roll. This spaced relationship is permitted since the upper back-up roll has been previously raised in preparation for the work roll changing operation.
  • the upper movement of the work rolls is controlled by the piston of the piston cylinder assembly 56 contacting the bottom of its cylinder which movement is within the space allowed in the mill so that the upper work roll will not hit against the upper back-up roll. It will be appreciated that the pistons contact with the cylinder will be very slightly represented by the amount the counterweight exceeds the weight of the rolls and the member 20.
  • the rolls 38 will be retracted to a position where they can be lowered by the car onto the second platform of the side-shifter 30.
  • the car 10 is further retracted to disengage the rolls and allow the second platform to move out from in front of the mill and the platform 28 to move in front of the mill and in front of the car 10.
  • This will place the new set of work rolls 26 in position to be engaged and raised off the platform 28 by the member 20 of the car 10 since the rolls are supported by identical bearing chocks and there will be no difference in the location of the axes of the rolls of the worn and new set so that there will be no need to adjust the member 20.
  • the set of worn and new work rolls are provided with either a nested chock construction, removable stools or built-in stools that allow the upper work roll to be supported by the lower work roll during their transit.
  • the platform 28 is moved to the side of the mill opposite to the side that the second platform was moved and the car 10 carrying the new work roll set 26 in cantilever fashion is advanced to the position of FIG. 1B.
  • the piston cylinder assembly 56 is exhausted which condition will remain until the rolls 25 are inserted into the window of the mill 36. While in this raised position the new rolls assume the same elevation as the worn rolls when positioned for their removal from the mill so that the new rolls will be properly aligned with respect to the driving couplings of the mill for automatic insertion of the rolls into the couplings.
  • pressure will be introduced into the piston cylinder assembly 56 to raise the counterweight 40 and lower the rolls 26 to the extent allowed by the stop plates of the jack 58.
  • the setting of the jack will be such that the piston cylinder assembly 56 will not lower the roll enough so that the lower work roll will hit against the lower back up roll. Instead, the final lowering of the work rolls onto the back-up roll will be performed by operation of the jack 58 to raise the counterweight 40 against the pressure of the piston cylinder assembly 58 and very slowly and carefully lower the work rolls until the lower work roll is supported by the lower back-up roll. At this point the car can be retracted to its inoperative position shown in FIG. 1A.
  • An apparatus for removing and replacing a roll to and from a rolling mill or the like comprising:
  • a car arranged on the operators side of said mill, said car including a member at its end adjacent to the mill for cantileverly supporting a roll in a position parallel to its working position when the roll is in said mill,
  • said car including a counterweight arranged to offset at least a part of the weight of said roll when supported by said member,
  • linkage means for connecting said counterweight to said member in order'that vertical movement of said counterweight is translated to said member
  • means for effecting said vertical movement of said counterweight comprising a piston cylinder assembly.
  • means for restricting the upper movement of said counterweight comprising a mechanical jack having a stop means
  • said stop means of said mechanical jack constructed and arranged for contacting with said car on said upper movement of said counterweight.
  • said piston cylinder assembly is a single action piston cylinder assembly constructed and arranged so that its piston will limit the extent to which said counterweight is lowered and wherein the weight of said counterweight is made to exceed the weight of said member and said

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
US455423A 1974-03-27 1974-03-27 Roll changing device for a rolling mill and the like Expired - Lifetime US3905485A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US455423A US3905485A (en) 1974-03-27 1974-03-27 Roll changing device for a rolling mill and the like
GB6528/75A GB1490020A (en) 1974-03-27 1975-02-17 Roll changing device for a rolling mill
CA220,399A CA1015687A (en) 1974-03-27 1975-02-17 Roll changing device for a rolling mill and the like
JP3248575A JPS5440065B2 (de) 1974-03-27 1975-03-19
ES436090A ES436090A1 (es) 1974-03-27 1975-03-26 Aparato para retirar y montar un cilindro a partir de y en un laminador o equipo parecido.
DE19752513444 DE2513444A1 (de) 1974-03-27 1975-03-26 Tragwagen zum auswechseln von walzen
FR7509694A FR2265466A1 (de) 1974-03-27 1975-03-27

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US455423A US3905485A (en) 1974-03-27 1974-03-27 Roll changing device for a rolling mill and the like
DE19752513444 DE2513444A1 (de) 1974-03-27 1975-03-26 Tragwagen zum auswechseln von walzen

Publications (1)

Publication Number Publication Date
US3905485A true US3905485A (en) 1975-09-16

Family

ID=25768690

Family Applications (1)

Application Number Title Priority Date Filing Date
US455423A Expired - Lifetime US3905485A (en) 1974-03-27 1974-03-27 Roll changing device for a rolling mill and the like

Country Status (6)

Country Link
US (1) US3905485A (de)
JP (1) JPS5440065B2 (de)
CA (1) CA1015687A (de)
DE (1) DE2513444A1 (de)
FR (1) FR2265466A1 (de)
GB (1) GB1490020A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251180A (en) * 1976-12-03 1981-02-17 Sack Gmbh Roll-changing apparatus
DE3019059A1 (de) * 1980-05-19 1981-11-26 Maschinen- Und Werkzeugbau Gmbh, 4600 Dortmund Vorrichtung zum auswechseln der arbeitswalzen von walzgeruesten
DE3019052A1 (de) * 1980-05-19 1981-11-26 Maschinen- Und Werkzeugbau Gmbh, 4600 Dortmund Vorrichtung zum auswechseln der arbeitswalzen von walzgeruesten
US4645401A (en) * 1984-06-13 1987-02-24 Disc Technology Corporation Magnetic disc handling system
US4863335A (en) * 1988-03-25 1989-09-05 Haines & Emerson, Inc. Automatic guided vehicle roll-handling system
US5732832A (en) * 1995-06-05 1998-03-31 Kordowski; John J. Adjustable divider unit to support notebooks
US20060144115A1 (en) * 2004-12-30 2006-07-06 Eduard Kusters Maschinenfabrik Gmbh & Co. Kg Roll-changing tool

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926027A (en) * 1975-02-11 1975-12-16 Wean United Inc Roll changing apparatus for a rolling mill or the like
DE2751819A1 (de) * 1977-11-19 1979-05-23 Schloemann Siemag Ag Walzgeruest, beispielsweise universalwalzgeruest
DE3829066A1 (de) * 1988-08-24 1990-03-08 Mannesmann Ag Vorrichtung zum auswechseln der arbeitswalzen, insbesondere von quarto-walzgeruesten

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1856082A (en) * 1929-07-24 1932-05-03 Baker Raulang Co Industrial truck
US2314686A (en) * 1940-09-23 1943-03-23 Edgar E Brosius Manipulator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1856082A (en) * 1929-07-24 1932-05-03 Baker Raulang Co Industrial truck
US2314686A (en) * 1940-09-23 1943-03-23 Edgar E Brosius Manipulator

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251180A (en) * 1976-12-03 1981-02-17 Sack Gmbh Roll-changing apparatus
DE3019059A1 (de) * 1980-05-19 1981-11-26 Maschinen- Und Werkzeugbau Gmbh, 4600 Dortmund Vorrichtung zum auswechseln der arbeitswalzen von walzgeruesten
DE3019052A1 (de) * 1980-05-19 1981-11-26 Maschinen- Und Werkzeugbau Gmbh, 4600 Dortmund Vorrichtung zum auswechseln der arbeitswalzen von walzgeruesten
US4645401A (en) * 1984-06-13 1987-02-24 Disc Technology Corporation Magnetic disc handling system
US4863335A (en) * 1988-03-25 1989-09-05 Haines & Emerson, Inc. Automatic guided vehicle roll-handling system
US5732832A (en) * 1995-06-05 1998-03-31 Kordowski; John J. Adjustable divider unit to support notebooks
US20060144115A1 (en) * 2004-12-30 2006-07-06 Eduard Kusters Maschinenfabrik Gmbh & Co. Kg Roll-changing tool
US7168280B2 (en) * 2004-12-30 2007-01-30 Eduard Kusters Maschinenfabrik Gmgh & Co. Kg Roll-changing tool

Also Published As

Publication number Publication date
DE2513444A1 (de) 1977-05-26
CA1015687A (en) 1977-08-16
JPS5440065B2 (de) 1979-12-01
FR2265466A1 (de) 1975-10-24
GB1490020A (en) 1977-10-26
JPS50133150A (de) 1975-10-22

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AS Assignment

Owner name: PITTSBURGH NATIONAL BANK

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP.OF OH;REEL/FRAME:004458/0765

Effective date: 19850610

AS Assignment

Owner name: PITTSBURGH NATIONAL BANK

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307

Effective date: 19860630

Owner name: PITTSBURGH NATIONAL BANK,PENNSYLVANIA

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307

Effective date: 19860630

AS Assignment

Owner name: WEAN UNITED, INC.

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:PITTSBURGH NATIONAL BANK;REEL/FRAME:004925/0218

Effective date: 19880509

AS Assignment

Owner name: UNITED ENGINEERING ROLLING MILLS, INC.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WEAN INCORPORATED;REEL/FRAME:004920/0256

Effective date: 19880610