US3728883A - Support apparatus for large diameter thin-wall metal cylinders - Google Patents

Support apparatus for large diameter thin-wall metal cylinders Download PDF

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Publication number
US3728883A
US3728883A US00115011A US3728883DA US3728883A US 3728883 A US3728883 A US 3728883A US 00115011 A US00115011 A US 00115011A US 3728883D A US3728883D A US 3728883DA US 3728883 A US3728883 A US 3728883A
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United States
Prior art keywords
cylinder
support
wheel assemblies
assembly
wheel
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Expired - Lifetime
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US00115011A
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English (en)
Inventor
H Lamborn
P Gallup
P Kao
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United Concrete Pipe Corp
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United Concrete Pipe Corp
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Assigned to UNITED CONCRETE PIPE CORPORATION, A CORP. OF DE. reassignment UNITED CONCRETE PIPE CORPORATION, A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: UNITED STATES PIPE AND FOUNDRY COMPANY
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12—Making tubes or metal hoses with helically arranged seams

Definitions

  • ABSTRACT A support assembly is disclosed for providing internal 1 support during fabrication of thin-walled large diameter metal cylinders such as those used as membranes in concrete pipe. Such cylinders are usually 5 feet and larger in diameter.
  • the support assembly comprises a plurality of internally mounted wheel assemblies attached to a common frame.
  • the invention relates to support apparatus for preventing the collapse or excessive deformation of thin-walled metal cylinders of large diameter.
  • Such support means may be located adjacent to the forming device which is used to helically form a cylinder from a length of flat metal strip.
  • Such cylinders are used in concrete pipe, their primary purpose is to form a waterproof barrier rather than to add substantial structural strength to the pipe.
  • Such cylinders are typically subsequently coated both internally and externally with concrete, and the external concrete may later be wrapped with steel wire or cable and further coated with concrete to form a length of prestressed concrete pipe.
  • Several methods have been used to prevent the collapse or excessive deformation of large diameter helically formed cylinders.
  • a common approach is to form the cylinder from a material which has a thickness sufficient to provide structural strength against collapse or excessive deformation of the cylinder.
  • a minimum thickness of 14 gage (0.0747 inch) generally is necessary for prevention of excessive deformation during forming thereof.
  • the steel cylinder performs the function of a waterproof membrane, rather than contributing significant structural strength, it is apparent that a cost savings can be achieved by the use of thinner steel.
  • One method of preventing collapse or excessive deformation of large diameter thin-walled helically formed cylinders is to form the cylinder on a mandrel such as that disclosed in US. Pat. No. 3,432,914. There, a mandrel is wrapped during the formation stage of the process. This approach requires costly equip ment, and employs a particular size mandrel for forming each different size cylinder. Furthermore, this mandreltype approach precludes a continuous forming operation.
  • FIG. I is a diagrammatic plan view of a forming device and cylinder being continuously and helically formed from metal strip.
  • FIG. 2A is an elevation view from the end of the cylinder taken for example along line 2A-2A of FIGS. 1 or 3 showing a support assembly according to the present invention.
  • FIG. 2B is a similar view of the support assembly from the end of a severed length of cylinder, taken for example, along a line 28-28 of FIG. 3.
  • FIG. 3 is a side elevation view, partially cut away, showing the support assembly of the present invention.
  • FIG. 4 is an enlarged view of one of the wheel assemblies of FIG. 2A.
  • FIG. 5 is a diagrammatic elevation view taken along line 5-5 of FIG. 3 showing exemplary wheel locations of the support assembly of the present invention.
  • FIG. 1 shows the formation of a steel cylinder 10 which is continuously being formed from a roll of steel strip of skelp l 1.
  • the strip is continuously shaped in the forming apparatus 12 into a cylinder and is continuously welded by conventional apparatus not shown.
  • the forming apparatus 12 may be any of the various types which employ rollers or the like for originally forming the strip into a cylindrical shape.
  • a mounting plate 13 may be attachedto the frame, or other structural supporting members, of the forming apparatus 12.
  • a plurality of wheel assemblies as shown in FIGS. 2 and 3 are attached to an axial tube or shaft 25 which in turn may be attached to mounting plate 13.
  • the axial member 25 can be attached to other suitable means, such as a floor mounted pedestal.
  • six sets of internal wheel assemblies 15 through 20 and two sets of external wheels 21 and 22 are shown in FIGS. 2A and 3.
  • Several wheel assemblies in each set are shown in'FIG. 2A before the length of cylinder is cut off, and the individual exemplary wheel locations thereof may be determined by reference to FIG. 5 which will be discussed in more detail subsequently.
  • Rollers such as 23 and 24 at the bottom of the cylinder are conventional and function toprovide additional vertical support.
  • the tube 25 functions as a mounting member or frame for the wheel assemblies.
  • the portion of the cylinder within the forming apparatus 12 may be supported internally by wheels 17a, 17b, 18a, 18b, 15a and 17c, although in some types of forming apparatus wheel assemblies may not be necessary until the cylinder leaves the forming apparatus. Also as seen in FIG. 3, at a short distance from the forming apparatus, the cylinder is supported by wheels 15b, 16b and 17d.
  • the axial tube 25 is given primary vertical support, rather than relying on cantilever action, by the lower wheel assemblies which in turn are supported by the cylinder.
  • the cylinder is supported in turn by lower external wheels and rollers.
  • tube 25 is given upward support by wheel assemblies 19a and 200 which are located inside of the cylinder.
  • External wheel 21a is mounted to ride at the same point of the cylinder as internal wheel 19a.
  • External wheel 22a is mounted externally and located so as to mate with internal wheel 20a.
  • This combination of external and internal wheels provides vertical support for tube 25.
  • Wheel assembly 17e provides further internal vertical support for the thin-walled cylinder 10.
  • a completed length of cylinder 26 (such as 20 feet long) is cut as indicated at 27 in FIG. 3 from the cylinder being formed. This is accomplished by conventional apparatus not shown. After .the length of cylinder 26 has been severed, it nonetheless requires internal support while it remains in a horizontal position. This internal support is provided by similar wheel assemblies mounted on the axial tube 25 as best seen in FIGS. 2B and 3. These are shown mounted in sets of five wheels. As shown in FIG. 3, the set closest to the forming apparatus 12 includes internal wheels 15c, 16c, 17f, 19c and 20b. Internal wheels 19c and 20b have external wheels 21c and,22c (not shown) mounted externally to provide support both for the cylinder 26 and for the internal set of wheel assemblies.
  • Identical sets of five internal wheels and two external wheels are located further along tube 25.
  • the wheels are caster mounted to permit them to swivel to the direction shown in FIG. 2B and the lower part of FIG. 3 in order to facilitate the horizontal removal of the severed cylinder 26.
  • FIG. 4 illustrates in detail a preferred construction.
  • a U-bolt 30 is bolted to a saddle 31 around the axial tube 25.
  • Pipe 32 is threaded into saddle 31 and a hex nut 33 is welded at its other end.
  • a threaded rod 34 is screwed into hex nut 33 and a second hex nut 37 is used to secure threaded rod 34 in hex nut 33.
  • the swivel caster assembly 35 is screwed and welded to threaded rod 34. Swivel caster 35 has a pneumatic tire 36 rotatably mounted thereon.
  • FIG. 5 An example of preferred wheel locations for the sup port of an approximately 80 inch diameter cylinder 10 of 16 gage (0.0598 inch) steel prior to the cut-off point 27 is shown in FIG. 5 for exemplary apparatus where the strip 11 enters as shown in FIG. 2A, although other locations may be used in various applications.
  • the radial locations are described through the axis of rotation of the wheels.
  • the horizontal location of each wheel will be described starting from the mounting plate 13 and working outwardly.
  • the angles are described in degrees of a 360 circle starting at vertical line 39 and proceeding clockwise (that is, from wheel 40 which is at zero degrees).
  • the first wheel 17a (that wheel closest to mounting plate 13) is in the position of wheel 47 shown in FIG. 5 and is 10 inches from the plate 13 and at an angle of 315.
  • the second wheel 18a is in the position of wheel 46 in FIG. 5. This is located 19 inches from the plate and at an angle of 270.
  • the third wheel 17b is also at angular position 47 and is 35 inches from the plate and at an angle of 315.
  • the fourth wheel 18b is at the angular position of wheel 46. This is about 43 inches from the plate and at an angle of 270.
  • the fifth wheel 15a is in the position of wheel 42 of FIG. 5. That is about 50 inches from the plate and at an angle of 45.
  • the sixth wheel 16a is in the position of wheel 40 which is at zero degrees and is about 5 8 inches from the plate.
  • the seventh wheel 17c is in the angular position of wheel 47 and is 68 inches from the plate.
  • the eighth wheel 15b is in the position of wheel 48 of FIG. 5.
  • the ninth wheel 16b is in the position of wheel 49 and is about 78 inches from the plate. This is at an angle of 30.
  • the tenth wheel 17d is in the position of wheel 50, and is about 89 inches from the plate and at an angle of about 350.
  • the eleventh wheel 19a is in the position of wheel 45. This wheel is 102 inches from the plate and at an angle of 225.
  • the twelfth wheel 20a is in the position of wheel 44 in FIG. 5. This is 109 inches from the plate and at an angle of about 152.
  • the last wheel 17e is in position 49, and is inches from the plate 13 and at an angle of 30. It will be appreciated to those skilled in the art that these are example locations and that others may be used depending on the length of cylinder to the cut-off point, cylinder diameter, gage of metal and so forth.
  • the attachment of the central frame is readily accomplished by welding the tube 25 to a 1 inch thick flange which is then bolted to the mounting platel3.
  • the use of a U-bolt 30 or other adjustable means of mounting to the central frame or tube 25 permits the angular and axial adjustment of wheel location dependent upon the point where the maximum support against deformation or collapse is desired. It has been found beneficial to locate the lower internal wheels at a point mating to the external wheels. It is not, however, necessary that each lower internal wheel have a mating external wheel and it is possible to use an external wheel only with alternate lower internal wheels.
  • the use of external wheels with mating internal wheels permits the lower portion of the cylinder to support the upper portion of the cylinder since the lower wheels provide the lateral and vertical support for the central frame or tube 25.
  • the axial tube 25 may be of any desiredlength since support thereof does not rely on cantilever action.
  • the internal and external support preferably is symmetrical about the vertical axis as seen in FIG. 23.
  • a single internal wheel mating with a single external vertical wheel at 180 as viewed in FlG. 5
  • external wheels at approximately the locations of rollers 23 and 24 of FIG. 2A or external positions corresponding to positions 44 and 45 of FIG. 5, may be used.
  • the length of cylinder which can be supported by the support assembly of this invention is practically unlimited. Since the frame or axial tube 25 does not rely on cantilever action for vertical support, the only limitation on length is related to resistance to twisting or torque transmitted by the wheel assemblies. Additional torque resistance may be obtained by either the use of a larger diameter central frame or a different central frame configuration.
  • a support assembly for providing internal support for a horizontal, large diameter cylinder having a wall thickness such that said cylinder is likely to significantly deform or collapse if without support comprising a plurality of circumferentially and axially spaced wheel assemblies attached to a frame member for allowing continuous rotation and axial motion of said cylinder with respect to said wheel assemblies, each wheel of said wheel assemblies being positioned for contacting a different portion of the inner surface of said cylinder, and
  • a support assembly for providing internal support for a horizontal, large diameter cylinder having a wall thickness such that said cylinder is likely to significantly deform or collapse if without support, said support assembly being held in a fixed relationship with respect to a forming apparatus, said assembly comprising a frame stationarily supported with respect to said forming apparatus to prevent rotational movement of said frame and axial movement thereof in the direction of the axis of said cylinder, plurality of circumferentially and axially spaced wheel assemblies attached to said frame for allowing continuous rotation and axial motion of said cylinder with respect to said wheel assemblies, each of said wheel assemblies having at least one wheel, each wheel being substantially equidistant from the axis of said cylinder and spaced from said axis for contacting a different portion of the inner surface of said cylinder, and
  • a support assembly for providing internal support for a horizontal, large diameter cylinder having a wall thickness such that said cylinder is likely to significantly deform or collapse if without support comprising a plurality of wheel assemblies attached to a frame member, each wheel of said wheel assemblies comprising a pneumatic wheel and being positioned so that it contacts the inner surface of said cylinder, and
  • a support assembly for providing internal support for preventing excessive deformation or collapse of large diameter thin-walled cylinders formed horizontally and helically from metal strip, said assembly comprising a frame stationarily supported with respect to said forming apparatus to prevent rotational movement of said frame and axial movement thereof in the direction of the axis of said cylinder,
  • each of said wheel assemblies having at least one wheel, each wheel being substantially equidistant from the axis of said cylinder and spaced from said axis for contacting a different portion of the inner surface of said cylinder,
  • a support assembly for providing internal support for a horizontal, large diameter cylinder having a wall thickness such that said cylinder is likely to deform or collapse if without support, said support assembly being held in a fixed relationship with respect to a forming apparatus, said assembly comprising at least two external support wheel assemblies mounted below the horizontal mid-point of said cylinder on different sides of the vertical mid-point of said cylinder,
  • a plurality of internal wheel assemblies attached to said frame, at least two of said internal wheel assemblies being, located adjacent said external wheel assemblies and further having at least one additional wheel assembly mounted above the horizontal mid-point of said cylinder.
  • a support assembly for providing internal support for a horizontal, large diameter cylinder having a wall thickness such that said cylinder is likely to deform or collapse if without support, said support assembly being held in a fixed relationship with respect to a forming apparatus, said assembly comprising at least one external support wheel assembly mounted below the horizontal mid-point of said cylinder at substantially the vertical mid-point of said cylinder,
  • a plurality of internal wheel assemblies attached to said frame, at least one of said internal wheel assemblies being located adjacent the inner surface of said cylinder opposite said external wheel assembly, and at least two of said internal wheel assemblies extending above the mid-point of said cylinder and contacting the upper interior surface of said cylinder.
  • a support assembly for providing support for a length of horizontal, large diameter cylinder having a wall thickness such that said cylinder is likely to deform or collapse if in a horizontal position without support, said support assembly being positioned away from a forming apparatus to support said length of cylinder after it has been cut from a cylinder being formed by said apparatus, said assembly comprising at least one external support wheel assembly mounted below the horizontal mid-point of said cylinder at substantially the vertical mid-point of said cylinder,
  • a plurality of external rotary support means mounted to contact the lower exterior of said cylinder on different sides of the vertical mid-point of said cylinder, a frame, and a plurality of internal wheel assemblies attached to said frame, at least one of said internal wheel assemblies being located adjacent the inner surface of said cylinder opposite said external wheel assembly, and at least two of said internal wheel assemblies extending above the mid-point of said cylinder and contacting the upper interior surface of said cylinder.
  • a support assembly for providing support for a length of horizontal, large diameter cylinder having a wall thickness such that said cylinder is likely to deform or collapse if in a horizontal position without support, said support assembly being positioned away from a forming apparatus to support said length of cylinder after it has been cut from a cylinder being formed by said apparatus, said assembly comprising at least two external support wheel assemblies mounted below the horizontal mid-point of said cylinder, each of said assemblies being spaced from the vertical mid-point of said cylinder, and
  • a plurality of internal wheel assemblies attached to a frame, said frame being affixed so as to prevent axial and rotational movement of said frame with respect to said forming apparatus, a portion of said wheel assemblies being positioned to contact the interior of said cylinder substantially at the area of contact of each of said external wheel assemblies, and the other of said internal wheel assemblies extending. above said horizontal axis of said cylinder and contacting the upper interior surface of said cylinder.
  • each of the sets of wheel assemblies within said plane has two wheel assemblies below the horizontal axis of said cylinder and three wheel assemblies above this horizontal axis.
  • a support assembly for providing internal support for a horizontal, large diameter cylinder having a wall thickness such that said cylinder is likely to significantly deform or collapse if without support comprising a plurality of circumferentially and axially spaced wheel assemblies attached to a frame member for allowing continuous rotation and axial motion of said cylinder with respect to said wheel assemblies,
  • each wheel of said wheel assemblies being positioned for contacting a different portion of the inner surface of said cylinder

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
US00115011A 1971-02-12 1971-02-12 Support apparatus for large diameter thin-wall metal cylinders Expired - Lifetime US3728883A (en)

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US11501171A 1971-02-12 1971-02-12

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US (1) US3728883A (de)
CA (1) CA948002A (de)
DE (1) DE2154423C3 (de)
ZA (1) ZA716491B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6209607B1 (en) 1999-02-23 2001-04-03 The Lamson & Sessions Co. Conduit-making apparatus with a multiple diameter winding drum
US6250908B1 (en) 1999-02-23 2001-06-26 The Lamson & Sessions Co. Conduit-making apparatus with a variable diameter winding drum
US20110056011A1 (en) * 2009-08-21 2011-03-10 Drechsel Lamont Corner assemblies for swimming pools
US8678187B2 (en) 2011-08-02 2014-03-25 Aeroflex Usa Shipping and installation container for soft tubing
US20190001535A1 (en) * 2015-08-12 2019-01-03 South China University Of Technology Method and Device for Jet-Packing Moulding Polymer Pipeline

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3146331A (en) * 1961-10-18 1964-08-25 Hoesch Ag Apparatus for producing helical-seam pipe
US3561320A (en) * 1968-05-03 1971-02-09 Crc Crose Int Inc Method and means for aligning tube clamping mechanisms and the like

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3146331A (en) * 1961-10-18 1964-08-25 Hoesch Ag Apparatus for producing helical-seam pipe
US3561320A (en) * 1968-05-03 1971-02-09 Crc Crose Int Inc Method and means for aligning tube clamping mechanisms and the like

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6209607B1 (en) 1999-02-23 2001-04-03 The Lamson & Sessions Co. Conduit-making apparatus with a multiple diameter winding drum
US6250908B1 (en) 1999-02-23 2001-06-26 The Lamson & Sessions Co. Conduit-making apparatus with a variable diameter winding drum
US20110056011A1 (en) * 2009-08-21 2011-03-10 Drechsel Lamont Corner assemblies for swimming pools
US8678187B2 (en) 2011-08-02 2014-03-25 Aeroflex Usa Shipping and installation container for soft tubing
US20190001535A1 (en) * 2015-08-12 2019-01-03 South China University Of Technology Method and Device for Jet-Packing Moulding Polymer Pipeline

Also Published As

Publication number Publication date
DE2154423B2 (de) 1979-02-01
CA948002A (en) 1974-05-28
DE2154423C3 (de) 1979-10-04
ZA716491B (en) 1972-06-28
DE2154423A1 (de) 1972-09-07

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AS Assignment

Owner name: UNITED CONCRETE PIPE CORPORATION, A CORP. OF DE.,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:UNITED STATES PIPE AND FOUNDRY COMPANY;REEL/FRAME:004837/0334

Effective date: 19880113

Owner name: UNITED CONCRETE PIPE CORPORATION, 14041 EAST LIVE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:UNITED STATES PIPE AND FOUNDRY COMPANY;REEL/FRAME:004837/0334

Effective date: 19880113