US3168767A - Method of and product for rebuilding tampers on compaction rollers - Google Patents

Method of and product for rebuilding tampers on compaction rollers Download PDF

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US3168767A
US3168767A US269680A US26968063A US3168767A US 3168767 A US3168767 A US 3168767A US 269680 A US269680 A US 269680A US 26968063 A US26968063 A US 26968063A US 3168767 A US3168767 A US 3168767A
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tamper
worn
ring
tampers
rebuilding
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US269680A
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Kenneth V Lutz
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49718—Repairing
    • Y10T29/49746—Repairing by applying fluent material, e.g., coating, casting

Definitions

  • Compaction rollers include a drum with radially dis posed tampers that serve to pack road fill materials.
  • the fill materials packed by the tampers have an abrasive eifect on the tampers and tend to cause excessive wear on the edges of the tempers.
  • the tempers are reduced in height and also reduced in Width at the free ends thereof. Consequently, the efiectiveness of the tampers for packing fill materials is lessened.
  • An object of the present invention is to provide an improved method for rebuilding worn tampers on a compaction roller.
  • Another object of the present invention is to provide a method for rebuilding worn tampers on a compaction roller whereby the rebuilt tampers have improved durability.
  • Another object of the present invention is to provide an improved method for recasting the free end of a worn tamper on a compaction roller to replace the Worn portion of the tamper.
  • Another object of the present invention is to provide a tamper ring to be employed in rebuilding a worn tamper.
  • Another object of the present invention is to provide a tamper ring which is employed in rebuilding a Worn tamper that self-adjusts to and fits the contour of a worn tamper.
  • Another object of the present invention is to provide a permanently attached ring which is employed in rebuilding a Worn tamper that reduces the tendency for side wear on the rebuilt tamper.
  • Another object of the present invention is to provide a tamper ring for recasting the free end of a Worn tamper on a compaction roller which improves the durability of the recast tamper.
  • Another object of the present invention is to provide a tamper ring for rebuilding a worn tamper that becomes a permanent part of the rebuilt tamper and also serves as a mold While recasting the Worn tamper.
  • FIG. 1 is a perspective view of a compaction roller having rebuilt tampers projecting from the drums thereof.
  • FIG. 2 is an elevation view of the tamper ring of the present invention employed in rebuilding a worm tamper.
  • FIGS. 3-5, inclusive, are illustrations of the steps included in the method of the present invention for rebuilding a worn tamper on a compaction roller.
  • FIG. 6 is an elevation view of a modification of the tamper ring shown in FIG. 2.
  • FIG. 1 Illustrated in FIG. 1 is a well-known or conventional compaction roller 10, which comprises cylindrical drums 11.
  • the drums 11 are supported in a well-known manner for rotation about a horizontal axis that travels in a path parallel to the ground.
  • Projecting radially from cylindrical walls 11a of the drums 11 are a plurality of tampers 15 formed of shanks, which were worn and rebuilt in accordance with the present invention.
  • the compaction roller 10 serves to pack road fill mate- 3,168,767 Patented Feb. 9., 1965 rial.
  • the drums 11 of the compaction roller 10 are filled with Water and are supported for rotation to travel over fill material.
  • tampers 15a thereof (FIGS. 3-5) pack the fill material.
  • The'movement of the tampers 15a over the fill material results in an abrasive action on the free ends 15b (FIGS. 35) of the tampers 15a. Consequently, the tempers 15a become worn and are reduced in height and width, thus lessening their eflectiveness for compacting the fill material.
  • the worn tampers 15a are required to be rebuilt or recast at the free ends 15b thereof to form the rebuilt or recast tampers 15 (FIG. 1).
  • a tamper ring (FIG. 2) or an apertured body is employed, which is made from a suitable hard material, such as steel.
  • the tamper ring 20 includes an outer Wall 200 having an inverted frustoconical configuration.
  • An inner wall Ztlb of the tamper ring 20 has substantially a frustoconical configuration.
  • the inner wall 201) tapers at a greater rate along the sur face Ztic.
  • At the uppermost portion of the tamper ring 20 between the Walls 20a and 20b thereof is an annular flange 20d.
  • the tamper ring 26 is disposed to enclose the free end 15b of the Worn tamper 15a with the inner wall 20b thereof in engagement with the tamper 15a.
  • the annular flange 20d is spaced from the free end 15b of the worn tamper 15a. Accordingly, a cavity is formed with the inner wall 20b of the tamper ring 20 in abutment with the worn tamper 15.
  • the tamper ring 20 Since the inner wall 20b of the tamper ring 20 is tapered or has a frusto-conical configuration, the tamper ring 20 is self-adjusting in adapting itself to the contour of the worn tamper 15a.
  • the annular flange 243d of the tamper ring 20 is spaced from the free end 15b of the Worn tamper 15a and serves to reduce any further side wear on the worn tamper 15a after the worn tamper 15a is recast.
  • the tamper ring 20 is welded in a conventional and well-known manner to the worn tamper 15a (FIG. 4).
  • a welding bead 30 is formed between the inner wall 20b of the ring tamper 2i and the worn tamper 15a as shown in FIGS. 4 and 5.
  • the welding head 30 may be made from the product Isorod, which is manufactured by The Resisto-Loy Co. Inc., of Grand Rapids, Michigan. Isorod constitutes a drawn high alloy coated rod containing chrome, molybdenum and carbon. More particularly, Isorod" com prises the following ingredients by Weight:
  • the tamper ring 20 is permanently and fixedly secured to the worn tamper 15a.
  • a hardfaced, durable, material (FIG. 5), until the exposed surface thereof is even with the exposed surface of the annular flange 20d of the tamper ring 20.
  • a hard, durable material may consist of the products Isorod and Manga-Tone N.M., which are manufactured by the aforementioned The Resisto-Loy Co. Inc.
  • Manga-Tone N.M. constitutes a nickel-manganese alloy containing nickel, manganese, with vanadium and carbon. More specifically, the
  • lsorod and Manger-Tone NM. to form the material for filling the cavity 25, which are heated to a molten state and allowed to cool.
  • the lsorod is used to bond and blend in with the Manga-Tone N.M.
  • the tamper ring 20 becomes a permanent part of the rebuilt or recast tamper 15. Also, the tamper ring 20 serves as a mold to form the shape of the hard, durable material filling the cavity 25. In addition, the tamper ring 20 functions as a crucible for containing a molten state of the hard, durable material filling the cavity 25. Moreover, the annular flange 20d will engage the fill material to be compacted by the compaction roller 10 and thus reduces any further side wear on the worn tamper a.
  • FIG. 6 A modification 40 of the tamper ring is shown in FIG. 6, which is made from a suitable hard material, such as steel.
  • the tamper ring 40 comprises an outer inverted frusto-conical wall 40a and an inner frustoconical wall 40b.
  • an outer wall 400 tapers at a greater rate than the outer wall 40a to facilitate the welding of the tamper ring 40 to the worn tamper 15a.
  • An annular flange Mini is formed at the uppermost extremity of the tamper ring 40.
  • the tamper ring 40 functions in the same manner as the tamper ring 20 for recasting or rebuilding the worn tamper 15a to form the the rebuilt tamper 15. I
  • the tamper ring 20 In rebuilding the worn tamper 15a (FIG. 3) or in recasting the free end 1511 of the worn tamper 15a to form the rebuilt tamper 15 (FIG. 1), the tamper ring 20 (FIG. 2) is disposed to surround the free end 15b of the worn tamper 15a and in engagement with the worn tamper 15a to form the cavity (FIG. 3). Thereupon, the tamper ring 20 is welded to the worn tamper 15a to be permanently and fixedly attached thereto (FIG. 4).
  • a hard, durable material in a molten state is contained within the cavity 25 with the exposed surface thereof even with the exposed surface of the annular flange 20d of the tamper ring 20 (RIG. 5).
  • the recast or rebuilt tamper 15 is formed (FIG. 1).
  • a method of recasting a worn tamper of a compaction roller comprising the steps of disposing a tamper ring around the free end of a Worn tamper with a tapered inner wall of the tamper ring in engagement with the worn tamper, said tamper ring being arranged to form an enclosure around the free end of said worn tamper with an annular flange of the tamper ring spaced from and communicating with the exposed surface of said free end of said worn tamper, permanently securing said tamp er ring to said worn tamper with a welding alloy, and filling the space between said worn tamper and said tamper ringwith a hard wear resistant metallic filler material in a molten state until the exposed surface of said filler material is substantially even with said annular flange, whereby after said filler material cools a recast tamper is formed from said worn tamper, said tamper ring and said fill

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Road Paving Machines (AREA)

Description

Feb. 9, 1965 K. v. LUTZ METHOD OF AND PRODUCT FOR REBUILDING TAMPERS ON COMPACTION ROLLERS Filed April 1, 1963 INVENTOR.
v w m y Dov ow w R H "M 0 |-QQN m m K Q m 1% B I v u u u v0.0 A u w n in? 3: E. 3 ig 0 Q N d a Fm w 0 g :fi a A a =5 w s @E ME METHOD OF AND United States Patent 3,168,767 PRODUCT FOR REBUILDMG TAMPERS 0N CGMFACTIQN ROLLERS Kenneth V. Lutz, 13931 Carmen Road, Cupertino, Calif. Filed Apr. 1, 1963, Ser. No. 269,689 1 (Jlaim. (@l. 22-203) The present invention relates in general to compaction rollers, and more particularly to a method of and prod not for rebuilding worn tampers on compaction rollers.
Compaction rollers include a drum with radially dis posed tampers that serve to pack road fill materials. The fill materials packed by the tampers have an abrasive eifect on the tampers and tend to cause excessive wear on the edges of the tempers. As a result thereof, the tempers are reduced in height and also reduced in Width at the free ends thereof. Consequently, the efiectiveness of the tampers for packing fill materials is lessened.
An object of the present invention is to provide an improved method for rebuilding worn tampers on a compaction roller.
Another object of the present invention is to provide a method for rebuilding worn tampers on a compaction roller whereby the rebuilt tampers have improved durability.
Another object of the present invention is to provide an improved method for recasting the free end of a worn tamper on a compaction roller to replace the Worn portion of the tamper.
Another object of the present invention is to provide a tamper ring to be employed in rebuilding a worn tamper.
Another object of the present invention is to provide a tamper ring which is employed in rebuilding a Worn tamper that self-adjusts to and fits the contour of a worn tamper.
Another object of the present invention is to provide a permanently attached ring which is employed in rebuilding a Worn tamper that reduces the tendency for side wear on the rebuilt tamper.
Another object of the present invention is to provide a tamper ring for recasting the free end of a Worn tamper on a compaction roller which improves the durability of the recast tamper.
Another object of the present invention is to provide a tamper ring for rebuilding a worn tamper that becomes a permanent part of the rebuilt tamper and also serves as a mold While recasting the Worn tamper.
Other and further objects and advantages of the present invention will be apparent to one skilled in the art from the following description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a perspective view of a compaction roller having rebuilt tampers projecting from the drums thereof.
FIG. 2 is an elevation view of the tamper ring of the present invention employed in rebuilding a worm tamper.
FIGS. 3-5, inclusive, are illustrations of the steps included in the method of the present invention for rebuilding a worn tamper on a compaction roller.
FIG. 6 is an elevation view of a modification of the tamper ring shown in FIG. 2.
Illustrated in FIG. 1 is a well-known or conventional compaction roller 10, which comprises cylindrical drums 11. The drums 11 are supported in a well-known manner for rotation about a horizontal axis that travels in a path parallel to the ground. Projecting radially from cylindrical walls 11a of the drums 11 are a plurality of tampers 15 formed of shanks, which were worn and rebuilt in accordance with the present invention.
The compaction roller 10 serves to pack road fill mate- 3,168,767 Patented Feb. 9., 1965 rial. The drums 11 of the compaction roller 10 are filled with Water and are supported for rotation to travel over fill material. In so'doing, tampers 15a thereof (FIGS. 3-5) pack the fill material. The'movement of the tampers 15a over the fill material results in an abrasive action on the free ends 15b (FIGS. 35) of the tampers 15a. Consequently, the tempers 15a become worn and are reduced in height and width, thus lessening their eflectiveness for compacting the fill material. Hence, the worn tampers 15a are required to be rebuilt or recast at the free ends 15b thereof to form the rebuilt or recast tampers 15 (FIG. 1).
In carrying out the method of the present invention, a tamper ring (FIG. 2) or an apertured body is employed, which is made from a suitable hard material, such as steel. The tamper ring 20 includes an outer Wall 200 having an inverted frustoconical configuration. An inner wall Ztlb of the tamper ring 20 has substantially a frustoconical configuration. At the lower extremity thereof, the inner wall 201) tapers at a greater rate along the sur face Ztic. At the uppermost portion of the tamper ring 20 between the Walls 20a and 20b thereof is an annular flange 20d.
As shown in FIG. 3, the tamper ring 26 is disposed to enclose the free end 15b of the Worn tamper 15a with the inner wall 20b thereof in engagement with the tamper 15a. The annular flange 20d is spaced from the free end 15b of the worn tamper 15a. Accordingly, a cavity is formed with the inner wall 20b of the tamper ring 20 in abutment with the worn tamper 15.
Since the inner wall 20b of the tamper ring 20 is tapered or has a frusto-conical configuration, the tamper ring 20 is self-adjusting in adapting itself to the contour of the worn tamper 15a. The annular flange 243d of the tamper ring 20 is spaced from the free end 15b of the Worn tamper 15a and serves to reduce any further side wear on the worn tamper 15a after the worn tamper 15a is recast.
After the tamper ring 20 is positioned to surround the free end 15b of the worn tamper 15a, the tamper ring 20 is welded in a conventional and well-known manner to the worn tamper 15a (FIG. 4). A welding bead 30 is formed between the inner wall 20b of the ring tamper 2i and the worn tamper 15a as shown in FIGS. 4 and 5. The welding head 30 may be made from the product Isorod, which is manufactured by The Resisto-Loy Co. Inc., of Grand Rapids, Michigan. Isorod constitutes a drawn high alloy coated rod containing chrome, molybdenum and carbon. More particularly, Isorod" com prises the following ingredients by Weight:
Percent Chrome 12 Carbon .2 Molybdenum 1 Titanium .7 Boron .9 Iron 86.1
Thus, the tamper ring 20 is permanently and fixedly secured to the worn tamper 15a.
With the tamper ring 20 welded to the Worn tamper 15a, the cavity 25 is then filled with a hardfaced, durable, material (FIG. 5), until the exposed surface thereof is even with the exposed surface of the annular flange 20d of the tamper ring 20. Such a hard, durable material may consist of the products Isorod and Manga-Tone N.M., which are manufactured by the aforementioned The Resisto-Loy Co. Inc. Manga-Tone N.M. constitutes a nickel-manganese alloy containing nickel, manganese, with vanadium and carbon. More specifically, the
, Percent Carbon 1.8 to 2.0 Nickel 8.0 to 9;0 Manganese 26.0 to 28.0 Vanadium 1.3 to 1.5 Iron 7 62.9 to 59.5
In the preferred embodiment, there is an equal amount of lsorod and Manger-Tone NM. to form the material for filling the cavity 25, which are heated to a molten state and allowed to cool. The lsorod is used to bond and blend in with the Manga-Tone N.M.
From the foregoing, it is to be observed that the tamper ring 20 becomes a permanent part of the rebuilt or recast tamper 15. Also, the tamper ring 20 serves as a mold to form the shape of the hard, durable material filling the cavity 25. In addition, the tamper ring 20 functions as a crucible for containing a molten state of the hard, durable material filling the cavity 25. Moreover, the annular flange 20d will engage the fill material to be compacted by the compaction roller 10 and thus reduces any further side wear on the worn tamper a.
A modification 40 of the tamper ring is shown in FIG. 6, which is made from a suitable hard material, such as steel. The tamper ring 40 comprises an outer inverted frusto-conical wall 40a and an inner frustoconical wall 40b. At the lowermost extremity of the ring tamper 40, an outer wall 400 tapers at a greater rate than the outer wall 40a to facilitate the welding of the tamper ring 40 to the worn tamper 15a. An annular flange Mini is formed at the uppermost extremity of the tamper ring 40. The tamper ring 40 functions in the same manner as the tamper ring 20 for recasting or rebuilding the worn tamper 15a to form the the rebuilt tamper 15. I
In rebuilding the worn tamper 15a (FIG. 3) or in recasting the free end 1511 of the worn tamper 15a to form the rebuilt tamper 15 (FIG. 1), the tamper ring 20 (FIG. 2) is disposed to surround the free end 15b of the worn tamper 15a and in engagement with the worn tamper 15a to form the cavity (FIG. 3). Thereupon, the tamper ring 20 is welded to the worn tamper 15a to be permanently and fixedly attached thereto (FIG. 4). At this time, a hard, durable material in a molten state is contained within the cavity 25 with the exposed surface thereof even with the exposed surface of the annular flange 20d of the tamper ring 20 (RIG. 5). The material as is formed to the shape of the inner wall 20b of the tamper ring 20. After the material 35 cools and is hardened, the recast or rebuilt tamper 15 is formed (FIG. 1).
It is to be undestood that modifications and variations of the embodiment of the invention disclosed herein may be resorted to Without departing from the spirit of the invention and the scope of the appended claim.
Having thus described my invention, what I claim as new and desire to protect by Letters Patent is:
A method of recasting a worn tamper of a compaction roller comprising the steps of disposing a tamper ring around the free end of a Worn tamper with a tapered inner wall of the tamper ring in engagement with the worn tamper, said tamper ring being arranged to form an enclosure around the free end of said worn tamper with an annular flange of the tamper ring spaced from and communicating with the exposed surface of said free end of said worn tamper, permanently securing said tamp er ring to said worn tamper with a welding alloy, and filling the space between said worn tamper and said tamper ringwith a hard wear resistant metallic filler material in a molten state until the exposed surface of said filler material is substantially even with said annular flange, whereby after said filler material cools a recast tamper is formed from said worn tamper, said tamper ring and said filler material.
References Iited by the Examiner UNITED STATES PATENTS 1,807,477 5/ 31 Hume 22-203 2,334,778 11/43 LeTourneau 94-5O 2,463,065 3/49 Stevenson 22-203 2,503,161 4/50 LeTourneau 9450 3,020,610 2/62 Rejdak 22203 3,040,638 6/ 62 Atkinson 94-50 MICHAEL V. BRINDISI, Primary Examiner.
MARCUS U. LYONS, Examiner.
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656418A (en) * 1970-11-23 1972-04-18 Kenneth V Lutz Weld-on restoring caps for self-powered compactors
US4004725A (en) * 1973-09-27 1977-01-25 General Electric Company Apparatus for assembling components of a dynamoelectric machine
US4087903A (en) * 1975-01-06 1978-05-09 General Electric Company Method of attaching components of a dynamoelectric machine
US4950102A (en) * 1988-01-27 1990-08-21 Zeitz James H Wheel compaction unit
US20100058570A1 (en) * 2007-03-13 2010-03-11 Polyslus AG Method for reconditioning a used grinding roller
US9561562B2 (en) 2011-04-06 2017-02-07 Esco Corporation Hardfaced wearpart using brazing and associated method and assembly for manufacturing
US10543528B2 (en) 2012-01-31 2020-01-28 Esco Group Llc Wear resistant material and system and method of creating a wear resistant material

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1807477A (en) * 1927-11-22 1931-05-26 Hume Walter Reginald Welded article
US2334778A (en) * 1938-12-31 1943-11-23 Letourneau Inc Roller foot
US2463065A (en) * 1944-05-22 1949-03-01 Globe Oil Tools Co Method for mounting work in a holder
US2503161A (en) * 1948-10-05 1950-04-04 Letourneau Inc Foot for earth compacting roller implements
US3020610A (en) * 1955-12-20 1962-02-13 Erico Prod Inc Method of welding aluminum and other metals
US3040639A (en) * 1957-05-13 1962-06-26 Chiyoda Kogaku Seiko Kabushiki Camera apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1807477A (en) * 1927-11-22 1931-05-26 Hume Walter Reginald Welded article
US2334778A (en) * 1938-12-31 1943-11-23 Letourneau Inc Roller foot
US2463065A (en) * 1944-05-22 1949-03-01 Globe Oil Tools Co Method for mounting work in a holder
US2503161A (en) * 1948-10-05 1950-04-04 Letourneau Inc Foot for earth compacting roller implements
US3020610A (en) * 1955-12-20 1962-02-13 Erico Prod Inc Method of welding aluminum and other metals
US3040639A (en) * 1957-05-13 1962-06-26 Chiyoda Kogaku Seiko Kabushiki Camera apparatus

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656418A (en) * 1970-11-23 1972-04-18 Kenneth V Lutz Weld-on restoring caps for self-powered compactors
US4004725A (en) * 1973-09-27 1977-01-25 General Electric Company Apparatus for assembling components of a dynamoelectric machine
US4087903A (en) * 1975-01-06 1978-05-09 General Electric Company Method of attaching components of a dynamoelectric machine
US4950102A (en) * 1988-01-27 1990-08-21 Zeitz James H Wheel compaction unit
US20100058570A1 (en) * 2007-03-13 2010-03-11 Polyslus AG Method for reconditioning a used grinding roller
US8316543B2 (en) * 2007-03-13 2012-11-27 Polysius Ag Method for reconditioning a used grinding roller
US9561562B2 (en) 2011-04-06 2017-02-07 Esco Corporation Hardfaced wearpart using brazing and associated method and assembly for manufacturing
US10730104B2 (en) 2011-04-06 2020-08-04 Esco Group Llc Hardfaced wear part using brazing and associated method and assembly for manufacturing
US10543528B2 (en) 2012-01-31 2020-01-28 Esco Group Llc Wear resistant material and system and method of creating a wear resistant material

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