WO2017063949A1 - Empoise pour le montage d'un cylindre - Google Patents

Empoise pour le montage d'un cylindre Download PDF

Info

Publication number
WO2017063949A1
WO2017063949A1 PCT/EP2016/074006 EP2016074006W WO2017063949A1 WO 2017063949 A1 WO2017063949 A1 WO 2017063949A1 EP 2016074006 W EP2016074006 W EP 2016074006W WO 2017063949 A1 WO2017063949 A1 WO 2017063949A1
Authority
WO
WIPO (PCT)
Prior art keywords
lubricant
chock
coolant
roll
receiving space
Prior art date
Application number
PCT/EP2016/074006
Other languages
German (de)
English (en)
Inventor
Daniel Knie
Johannes Alken
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 WO2017063949A1 publication Critical patent/WO2017063949A1/fr

Links

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
    • B21B31/07—Adaptation of roll neck bearings
    • B21B31/074—Oil film bearings, e.g. "Morgoil" bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/1045—Details of supply of the liquid to the bearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/107—Grooves for generating pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/30—Angles, e.g. inclinations

Definitions

  • the invention relates to a chock for rotatably supporting a roller, in particular a support roller in a roll stand.
  • the local chock also called bearing housing, has a cylindrical receiving space for receiving and rotatable mounting of a roll neck of a roller to be supported. Between the chock and the roll neck an annular lubrication gap for coolant and / or lubricant is formed.
  • the chock has an inlet channel for the coolant and / or lubricant in the receiving space.
  • the chock has a Abieit Nurs for deriving the coolant and / or lubricant from the receiving space and a Abieit recognized associated drain channel for receiving and discharging the Abieit dressed derived cooling and / or lubricant.
  • the Abieit drivingen in the known chock are on the ball side of the chock, but arranged outside the lubrication gap.
  • the Abieit drivingen in the known chock are also deliberately designed so that they do not touch the surface of the roll neck; Rather, a planned gap or distance remains between the Abieit recognizeden and the pin surface to allow a certain amount of coolant and / or lubricant to pass the Abieit Roaden over.
  • the present invention seeks to further develop a known chock for storing a roll in a rolling mill to the effect that the permissible operating limits, such as the maximum permissible speeds, can be further increased.
  • the half-plane according to the invention extends as a half sectional plane starting from the central longitudinal axis of the example cylindrical Receiving space of the chock radially in the direction of the rolling force in the load case.
  • the half-plane does not extend in the radial direction against the direction of the rolling force. It is made the simplified assumption that the longitudinal axis of the receiving space and the longitudinal axis of the roller, which acts in the load case, the rolling force coincide. That is, it is suggested in the alternative that the rolling force - contrary to reality - attacks the longitudinal axis of the receiving space.
  • the actual in the load case radial offset between the longitudinal axis of the roller as a line of attack of the rolling force and the longitudinal axis of the receiving space is considered negligible and therefore ignored.
  • the term lubrication gap refers to the area of the load-bearing coolant or lubricant film in the receiving space.
  • the chock and the roll neck are cooled by the fresh coolant and / or lubricant supplied into the receiving space. After its supply through the inlet channel, the coolant and / or lubricant is sucked by the pumping action in the interior of the receiving space in the annular lubricating gap and fed to the drainage channel.
  • the fresh coolant and / or lubricant is also heat carrier, which transports the heat energy from the warehouse, so it cools.
  • the inlet channel for the coolant and / or lubricant in a circumferential angle range ⁇ of + 90 ° ⁇ ⁇ + 270 ° relative to the radial half-plane through the chock is arranged.
  • the inlet channel is positioned in the chock in an area where the gap height of the lubrication gap in the load case in the direction of rotation of the roller is increasingly larger and thus the bearing sucks fresh coolant and / or lubricant.
  • the Abieit Vietnamese is designed as stripping means for scraping the coolant and / or lubricant from the surface of the roll neck. No gap is then provided between the stripping device and the surface of the roll neck; Rather, the wiper device is in direct contact with the surface of the roll neck to scrape the coolant or lubricant adhering to the surface of the roll neck or pin bushing there.
  • the supplied fresh coolant and / or lubricant can therefore advantageously come into direct contact with the surface of the roll neck or the journal book and record there very effectively the heat. Due to the design of the Abieit worn as stripping the cooling effect is further improved significantly, whereby the permissible operating limits are further increased.
  • the stripping device is associated with a pressing device in order to press the stripping device against the surface of the roll neck with a predetermined pressing force.
  • the stripping device is arranged in the chock in the lubrication gap parallel to the longitudinal axis of the receiving space. It preferably extends over its entire length and more preferably over the entire length of the roller mounted in the receiving space.
  • the chock on a bearing bush which is arranged rotationally fixed in the chock.
  • the inlet channel for the coolant and / or lubricant must then penetrate the bearing bush to allow a supply of coolant and / or lubricant in the receiving space.
  • the stripping device is then arranged on the inside of the bearing bush in order to be able to come into direct contact with the surface of the roll neck.
  • the acute angle ⁇ between the position of the stripping device and the inlet channel on the circumference of the chock is as small as possible, preferably ⁇ 45 °, for the purposes of the present invention.
  • the chock according to the invention is particularly well suited for the storage of back-up rolls in rolling stands for rolling metallic rolling stock, because in these cases the occurring (rolling) forces are particularly great.
  • the invention is not limited to this application; In principle, intermediate or work rolls can be stored in the chock according to the invention.
  • chock is the subject of the dependent claims.
  • the description is accompanied by five figures, wherein a cross section through an inventively designed chock for an upper roller, in particular support roller in a roll stand for opposite directions of rotation;
  • Figures 1 and 2 show cross-sections through the chocks 100 and roll neck 210 on the side of the roll bale and on the bale-distant side for upper rolls in a rolling stand, that is for rolls above the rolling stock line.
  • FIG. 1 shows a cross section through a chock 100 according to the invention with a receiving space 110 for receiving and pivoting a roll neck 210 of an upper roll, in particular an upper backing roll in a roll stand.
  • the receiving space 1 10 is typically clamped or limited by a bearing bush 150, which is arranged rotatably as wearing parts in the chock 100.
  • an annular lubricating gap 220 is formed between the roll neck 210 and the bearing bush 150.
  • This lubrication gap 220 is via an inlet channel 120 with coolant and / or lubricant, for.
  • Relative to the half-plane Y is located the inlet channel 120 seen in the embodiment shown in Figure 1 at a 90 ° position in the direction of rotation of the roller.
  • the location of the half-plane Y is defined earlier in the general part of the description.
  • the supply channel for the coolant and / or lubricant can be positioned in an angular range of 90 ° ⁇ ⁇ 270 ° with respect to the half-plane Y.
  • a recess 122 also called oil pocket, be extended in the wall of the chock or the bearing bush.
  • Abieit noise 130 is located on the inner wall of the receiving space 1 10 or optionally on the inside of the bearing bush 150 in the lubricating gap 228.
  • the Abieit disturbed 130 extends parallel to the longitudinal axis L of the receiving space 1 10 and preferably over the entire Length of the lubrication gap 220.
  • the Abieit driving 130 projects radially into the lubrication gap 220.
  • its radial length is so short that a gap remains between it and the surface of the roll neck. Then, coolant and / or lubricant sticks to the surface of the roll neck and the cooling effect is sub-optimal.
  • its radial length reaches the surface of the roll neck to scrape off the coolant and / or lubricant therefrom. Then, the new / fresh coolant or lubricant comes into direct contact with the surface of the roll neck or the pin bush, whereby the cooling effect is improved.
  • the Abieit noise is also referred to as stripping.
  • the stripping device 130 can be pressed sealingly against the surface of the roll neck 210 rotating in the receiving space 110 by means of a pressing device 160 in the radial direction. It is important that the stripping device 130 - seen in the direction of rotation of the roller - always before the Supply channel 120 is arranged in the chock or in the bearing bush and as close as possible, ie with the smallest possible acute angle ⁇ with 0 ⁇ ⁇ 50 °, preferably 10 ° ⁇ ⁇ 45th The angle ⁇ is determined from the center or the center line of the inlet channel or the coolant or lubricant pocket up to the middle of Abieit worn, seen in the circumferential direction.
  • a discharge channel 140 is preferably arranged immediately in front of the stripping device 130 for discharging coolant and / or lubricant which accumulates in the direction of rotation R of the roller in front of the stripping device 140.
  • the Abieit driving 130 starting from the half-plane Y, are arranged in an angular range of 0 ° ⁇ ß ⁇ 270 ° in the direction of rotation of the roller.
  • FIG. 2 shows a cross section through the opposite pin of the roller and the associated chock of Figure 1; In other words: FIG. 2 shows a view of the opposite end face of the chock-roll arrangement in contrast to FIG. 1.
  • the bearing according to the figures 1 and 2 works in the rolling operation as follows:
  • Coolant and / or lubricant is fed into the receiving space 110 via the inlet channel 120; the coolant and / or lubricant is then distributed throughout the lubrication gap 220 between the wall of the bearing bush 150 and the roll neck 210.
  • FIGS. 3 and 4 show cross-sections through the chocks 100 and roll neck 210 on the side of the roll bale and on the bale-distant side for lower rolls in a roll stand, ie for rolls below the rolling stock line.
  • FIG. 5 shows a longitudinal section through a chock 100 with a bearing bush 150 and a roll neck rotatably mounted in the bearing bush 210 of a roller 200. Between the bushing 150 and the roll neck 210, the annular lubricating gap 220 is formed for the coolant and lubricant. In the lubricating gap of the coolant or lubricant film is load-bearing.
  • the Width B of the lubrication gap is determined by the shortest width of closely spaced radially opposite portions of the chock and the bushing and the pin bushing, if any.
  • the Abieit adopted in the introductory prior art outside the width B of the lubricating gap 220 at the height of the position X between bales of the roller 200 and the chock 100 is arranged.
  • This area is also referred to as a cooling and / or lubricant collecting space; because there accumulates the side emerging from the lubrication gap cooling and / or lubricant. The coolant and / or lubricant is no longer load-bearing there.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Metal Rolling (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

La présente invention concerne une empoise pour le montage d'un cylindre, en particulier d'un cylindre de support dans une cage de laminoir. L'empoise 100 présente un espace de réception, pourvu de préférence d'un coussinet 150 pour le montage rotatif d'un tourillon de cylindre 210 d'un cylindre dans une cage de laminoir. Une fente de lubrification circulaire 220 pour un fluide de refroidissement et/ou de lubrification est formée entre l'espace de réception et le tourillon de cylindre. Un canal d'amenée pour le fluide de refroidissement et/ou de lubrification ainsi qu'un système d'évacuation 130 pour celui-ci hors de l'espace de réception sont placés à l'intérieur de l'espace de réception 110. Pour pouvoir encore augmenter les limites de fonctionnement admissibles, par exemple les vitesses maximales admissibles pour une empoise, l'empoise est configurée selon l'invention de telle manière que le canal d'amenée pour le fluide de refroidissement et/ou de lubrification soit disposé dans une plage d'angle périphérique α de 90° < α < 270° par rapport à un demi-plan radial de l'empoise. Dans le même temps, le système d'évacuation, si on l'observe à partir du demi-plan Y dans le sens de rotation du cylindre, est placé dans la fente de lubrification 220 devant le canal d'amenée dans une plage d'angle périphérique β de 0° < β < 270°.
PCT/EP2016/074006 2015-10-13 2016-10-07 Empoise pour le montage d'un cylindre WO2017063949A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015219753.0A DE102015219753A1 (de) 2015-10-13 2015-10-13 Einbaustück zum Lagern einer Walze
DE102015219753.0 2015-10-13

Publications (1)

Publication Number Publication Date
WO2017063949A1 true WO2017063949A1 (fr) 2017-04-20

Family

ID=57104037

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/074006 WO2017063949A1 (fr) 2015-10-13 2016-10-07 Empoise pour le montage d'un cylindre

Country Status (2)

Country Link
DE (1) DE102015219753A1 (fr)
WO (1) WO2017063949A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2161768A (en) * 1937-11-04 1939-06-06 United Eng Foundry Co Sleeve-type rolling bearing
US2629640A (en) * 1950-07-08 1953-02-24 Hydropress Inc Bearing
JPS6245409A (ja) * 1985-08-26 1987-02-27 Nippon Kokan Kk <Nkk> ロ−ル冷却機構
JPS6240332U (fr) * 1985-08-30 1987-03-10
DE102006016714A1 (de) 2006-04-08 2007-10-11 Sms Demag Ag Einbaustück zur Aufnahme eines Walzenzapfens

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2161768A (en) * 1937-11-04 1939-06-06 United Eng Foundry Co Sleeve-type rolling bearing
US2629640A (en) * 1950-07-08 1953-02-24 Hydropress Inc Bearing
JPS6245409A (ja) * 1985-08-26 1987-02-27 Nippon Kokan Kk <Nkk> ロ−ル冷却機構
JPS6240332U (fr) * 1985-08-30 1987-03-10
DE102006016714A1 (de) 2006-04-08 2007-10-11 Sms Demag Ag Einbaustück zur Aufnahme eines Walzenzapfens

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Publication number Publication date
DE102015219753A1 (de) 2017-04-13

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