US3770108A - Tensioning device for wide moving belts - Google Patents

Tensioning device for wide moving belts Download PDF

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Publication number
US3770108A
US3770108A US00236690A US3770108DA US3770108A US 3770108 A US3770108 A US 3770108A US 00236690 A US00236690 A US 00236690A US 3770108D A US3770108D A US 3770108DA US 3770108 A US3770108 A US 3770108A
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US
United States
Prior art keywords
tensioning
cylinders
hydraulic
conduit
belt
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
US00236690A
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English (en)
Inventor
H Ettel
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.)
Mende Wilhelm and Co
Original Assignee
Mende Wilhelm and Co
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 Mende Wilhelm and Co filed Critical Mende Wilhelm and Co
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Publication of US3770108A publication Critical patent/US3770108A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
    • B21C47/3408—Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the lateral position of the material
    • B21C47/3425—Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the lateral position of the material without lateral edge contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus

Definitions

  • the device comprises hydraulic cylinders, one at either end of the drum axle to adjust tension by moving the drum, and a regulating cylinder acting on the axle in a direction perpendicular to the force of the tensioning cylinders which responds to lateral deflections of the belt and tilts the drum to cause the belt to return to its normal mean position.
  • the tensioning cylinders are connected to a common fluid supply conduit oflarger diameter than the conduit connecting to the source of fluid to insure equal pres sure in both cylinders in any tilted position.
  • This invention relates to a tensioning device for wide strip which passes over a tensioning roll whose axle is prestressed on each side by a hydraulic tensioning cylinder in the direction of tension of the strip, the tensioning cylinders being connected by means of supply conduits to a source of pressure medium where furthermore in addition to the hydraulic tensioning cylinder there is provided on one side of the roll a hydraulic regulating cylinder acting on the axle in a substantially perpendicular direction to the direction of force of the hydraulic tensioning cylinder and which is supplied with a pressure medium as a function of the lateral deflections of the strip in such a manner that tilting of the roll causes the strip to be returned into its mean position.
  • a tensioning device for steel strip in which hydraulic tensioning cylinders press against the ends of the shaft of the tensioning roll and thus prestress the latter in the direction of tension.
  • the axis of the tensioning roll is subjected at one end to an additional load from a regulating cylinder whose direction of force is perpendicular to that of the adjacent tensioning cylinder.
  • the regulating cylinder is supplied with a pressure medium as a function of the deflections of the steel strip.
  • the deflections are detected by a sensing device which is irrelevant in this context, and converted into corresponding pressure signals which act on the regulating cylinder. It has been found in The object of the present invention is to provide a device for tensioning a strip whereby cracking of the strip, more especially of a steel strip, is prevented.
  • the problem of the present invention is solved by joining the two hydraulic tensioning cylinders by means of an equalising conduit.
  • the solution according to the present invention is based on the fact that the regulating movements of the regulating cylinder may be very great, especially if the strip should be deflected rapidly as may be caused, for example, by a sudden cold draught of air. Since the regulating of the central path of the steel strip is basically effected by the tilting of the tensioning roll, great stresses are produced in the peripheral zone of the steel strip. During the regulating process this peripheral zone must absorb, in practice, the entire stresses of the strip which during normal running would be absorbed by the total width of the steel strip. Thus cracks are formed which may then easily be propagated due to the notch effect over the entire width of the strip.
  • the teaching of the present invention is directed in such a way as to ensure a very uniform stress load over the entire width of the strip even under a regulating movement.
  • a direct connecting conduit is provided between the hydraulic tensioning cylinders which permits a very rapid equalisation of the pressure medium so that both ends of the tensioning cylinders and thus the strip must always be uniformly stressed over its entire width.
  • each tensioning cylinder it is not necessary to provide each tensioning cylinder with its own supply conduit from a source of pressure medium.
  • One conduit for the pressure medium suffices and it may be very thin, even thinner that the equalising conduit between the tensioning cylinders, thus considerably simplifying the apparatus.
  • the rate of equalisation of the pressure medium in the equalising conduit and thus the accelerations are slow so that the regulating movements of the regulating cylinders will cause a rapid equalisation by the tensioning cylinders of the changes in the stress of the strip over its entire width.
  • FIG. 1 is a right side view of a preferred embodiment of the present invention.
  • FIG. 2 is a cross-section of the preferred embodiment of the present invention shown in FIG. 1 taken along 11-.
  • a steel strip 1 is passed over a pair of deflecting rolls 2, 3 and a tensioning roll 4.
  • the tensioning roll 4 includes a shaft or axis 5.
  • the tensioning cylinders 7 are connected by means of a pressure equalizing conduit 8.
  • the pressure equalizing conduit 8 is connected by a supply conduit 9 to a pressure source (not shown) which supplies the pressure necessary to operate the tensioning cylinders 7.
  • the diameter of the pressure equalizing conduit 8 is large compared to the diameter of the supply conduit 9 to ensure that there is always equal pressure in the tensioning cylinders 7.
  • a regulating cylinder 10 having a plunger 11, acts upon one end of the shaft 5.
  • the regulating cylinder 10 acts in a direction substantially'perpendicular to the direction of action of tensioning cylinders 7.
  • a regulating conduit 12 connects the regulating cylinder 10 with a variable pressure source (not shown).
  • the pressurization of the regulating cylinder 10 varies according to the deflection of the steel strip 1 from its central path. This deflection is measured by any conventional detecting means. In this manner, the tensioning roll 4 is tilted as a function of the path of the steel strip 1, such that the steel strip 1 is returned to its central path.
  • a tensioning device for conveyor belts, said tensioning device including a tensioning roll, said conveyor belt passing over and having a mean path on said tensioning roll, a pair of hydraulic cylinders, said tensioning cylinders being connected to a pressure source by a supply conduit and acting upon said tensioning roll to adjust the tension exerted by said tensioning roll upon said conveyor belt, and a hydraulic regulating cylinder, said hydraulic regulating cylinder acting upon one end of said tensioning roll in a direction substantially perpendicular to the direction of action of said hydraulic tensioning cylinders, said hydraulic regulating cylinder being connected to a pressure source and pressurized as a function of the lateral deflection of tween said hydraulic tensioning cylinders.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Drives For Endless Conveyors (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
US00236690A 1971-03-26 1972-03-21 Tensioning device for wide moving belts Expired - Lifetime US3770108A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2114835A DE2114835C3 (de) 1971-03-26 1971-03-26 Vorrichtung zum Spannen eines breiten Bandes

Publications (1)

Publication Number Publication Date
US3770108A true US3770108A (en) 1973-11-06

Family

ID=5802911

Family Applications (1)

Application Number Title Priority Date Filing Date
US00236690A Expired - Lifetime US3770108A (en) 1971-03-26 1972-03-21 Tensioning device for wide moving belts

Country Status (17)

Country Link
US (1) US3770108A (it)
JP (1) JPS5131791B1 (it)
AT (1) AT315112B (it)
BE (1) BE781104A (it)
BR (1) BR7201761D0 (it)
CA (1) CA933964A (it)
CH (1) CH531983A (it)
CS (1) CS160694B2 (it)
DD (1) DD96207A5 (it)
DE (1) DE2114835C3 (it)
DK (1) DK137375C (it)
ES (1) ES400997A1 (it)
FR (1) FR2131383A5 (it)
GB (1) GB1389722A (it)
IT (1) IT950697B (it)
NL (1) NL7203794A (it)
SU (1) SU602109A3 (it)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4173904A (en) * 1975-09-03 1979-11-13 S.P.A. Luigi Rizzi & C. Apparatus for automatically centering an endless band trained over two rolls
US4421228A (en) * 1981-08-17 1983-12-20 Eastman Kodak Company Periodically aligning an endless web
CN101906732A (zh) * 2010-07-20 2010-12-08 山东中力机械制造有限公司 一体式校正器信号阀
CN102991964A (zh) * 2012-10-14 2013-03-27 昆山特力伯传动科技有限公司 具有张力调节辊筒的输送机
CN103964134A (zh) * 2014-05-22 2014-08-06 成都海凌达机械有限公司 一种稳定调节托辊皮带张紧力的调节机构
CN103979268A (zh) * 2014-05-22 2014-08-13 成都海凌达机械有限公司 一种皮带松紧调节器
CN104692273A (zh) * 2014-12-26 2015-06-10 华南农业大学 一种双向牵引式轨道运输机钢丝绳张紧力调节装置及方法
CN105621027A (zh) * 2016-03-18 2016-06-01 叶侃 一种陶瓷切割输送装置
US10301117B2 (en) * 2015-11-12 2019-05-28 Rotzinger Ag Conveyer belt
CN117383325A (zh) * 2023-12-12 2024-01-12 江苏上达半导体有限公司 一种柔性基材收卷用的纠偏装置

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3726605A1 (de) * 1987-08-10 1989-02-23 Rexroth Mannesmann Gmbh Anordnung zum regeln des hubes zweier hubzylinder
DE9215165U1 (de) * 1992-11-06 1993-10-21 Visual Communications Ingenieurberatungs GmbH, 81243 München Kettentrieb
DE4321230A1 (de) * 1993-06-25 1995-03-02 Siemens Ag Vorrichtung zum meßtechnischen Erfassen des Bandzuges bei Bandwalzstraßen
CN109110538A (zh) * 2018-09-14 2019-01-01 四川环图材料科技有限公司 一种防水卷材收卷装置
CN110294351A (zh) * 2019-06-17 2019-10-01 Oppo（重庆）智能科技有限公司 标签贴切割设备
CN114955400A (zh) * 2022-06-07 2022-08-30 湖北中烟工业有限责任公司 一种zb45包装机输送带用气动张紧装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1250228B (de) * 1964-07-03 1967-09-14 Continental Elektro Ind Ag Hydraulisch wirkende Einrichtung zur Regelung der Lage eines laufenden Bandes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1250228B (de) * 1964-07-03 1967-09-14 Continental Elektro Ind Ag Hydraulisch wirkende Einrichtung zur Regelung der Lage eines laufenden Bandes

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4173904A (en) * 1975-09-03 1979-11-13 S.P.A. Luigi Rizzi & C. Apparatus for automatically centering an endless band trained over two rolls
US4421228A (en) * 1981-08-17 1983-12-20 Eastman Kodak Company Periodically aligning an endless web
CN101906732A (zh) * 2010-07-20 2010-12-08 山东中力机械制造有限公司 一体式校正器信号阀
CN101906732B (zh) * 2010-07-20 2012-09-26 山东中力机械制造有限公司 一体式校正器信号阀
CN102991964A (zh) * 2012-10-14 2013-03-27 昆山特力伯传动科技有限公司 具有张力调节辊筒的输送机
CN103979268A (zh) * 2014-05-22 2014-08-13 成都海凌达机械有限公司 一种皮带松紧调节器
CN103964134A (zh) * 2014-05-22 2014-08-06 成都海凌达机械有限公司 一种稳定调节托辊皮带张紧力的调节机构
CN104692273A (zh) * 2014-12-26 2015-06-10 华南农业大学 一种双向牵引式轨道运输机钢丝绳张紧力调节装置及方法
US10301117B2 (en) * 2015-11-12 2019-05-28 Rotzinger Ag Conveyer belt
CN105621027A (zh) * 2016-03-18 2016-06-01 叶侃 一种陶瓷切割输送装置
CN105621027B (zh) * 2016-03-18 2018-08-14 广东金巴利陶瓷有限公司 一种陶瓷切割输送装置
CN117383325A (zh) * 2023-12-12 2024-01-12 江苏上达半导体有限公司 一种柔性基材收卷用的纠偏装置
CN117383325B (zh) * 2023-12-12 2024-03-22 江苏上达半导体有限公司 一种柔性基材收卷用的纠偏装置

Also Published As

Publication number Publication date
DE2114835C3 (de) 1975-10-09
DK137375B (da) 1978-02-27
AT315112B (de) 1974-05-10
CH531983A (de) 1972-12-31
CA933964A (en) 1973-09-18
DD96207A5 (it) 1973-03-12
BR7201761D0 (pt) 1973-04-26
BE781104A (fr) 1972-07-17
CS160694B2 (it) 1975-03-28
GB1389722A (en) 1975-04-09
DE2114835A1 (de) 1972-10-05
IT950697B (it) 1973-06-20
DE2114835B2 (de) 1975-02-27
SU602109A3 (ru) 1978-04-05
DK137375C (da) 1978-08-07
JPS5131791B1 (it) 1976-09-08
NL7203794A (it) 1972-09-28
FR2131383A5 (it) 1972-11-10
ES400997A1 (es) 1975-02-01

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