US3793960A - Tamper foot - Google Patents

Tamper foot Download PDF

Info

Publication number
US3793960A
US3793960A US00288395A US3793960DA US3793960A US 3793960 A US3793960 A US 3793960A US 00288395 A US00288395 A US 00288395A US 3793960D A US3793960D A US 3793960DA US 3793960 A US3793960 A US 3793960A
Authority
US
United States
Prior art keywords
groove
plate
block means
leading edge
plate according
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
US00288395A
Other languages
English (en)
Inventor
R Mckenry
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.)
Kennametal Inc
Original Assignee
Kennametal 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 Kennametal Inc filed Critical Kennametal Inc
Application granted granted Critical
Publication of US3793960A publication Critical patent/US3793960A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
    • E01B27/12—Packing sleepers, with or without concurrent work on the track; Compacting track-carrying ballast
    • E01B27/13—Packing sleepers, with or without concurrent work on the track
    • E01B27/16—Sleeper-tamping machines

Definitions

  • ABSTRACT A plate adapted for being fixed to the end of a tamper 175/410, 4 ⁇ ' 14 81/523f arm and having a groove extending across the leading 4 edge and up the side edges and in which blocks of a hard wear resistant material, such as a cemented hard I 56]
  • References Cited metal carbide, are mounted and secured in place as by b 'n UNITED STATES PATENTS g 2,201,023 5/1940 Brown 104/13 8 Claims, 3 Drawing Figures TAMPER FOOT
  • the present invention relates to a tamper foot and is particularly concerned with a tamper foot so constructed and arranged as to have especially long life.
  • Tamping machines of the nature with which the present invention is concerned are widely used, especially in connection with railroads for tamping the ballast around railroad ties and squeezing it into a solid formation around and beneath the ties whereby rails mounted on the ties are firmly and solidly supported.
  • ballast material is quite often an abrasive nature, containing sand and ballast rocks and cinders and the like, and the tamping feet mounted on the lower ends of the tamping arms of such devices wear away extremely rapidly, and when partly worn, are deficient for carrying out the tamping and squeezing operations efficiently.
  • a primary objective of the present invention is the provision of a tamping foot of the nature referred to which has long life and which operates with a high degree of efficiency throughout the life thereof.
  • Still another object is the provision of a tamping foot of the nature referred to which is relatively inexpensive but which has a life expectancy many times that of a conventional tamping foot.
  • FIG. 1 is a fragmentary schematic view showing a typical tamping operation.
  • FIG. 2 is a front view looking in at the front of a tamping foot according to the present invention.
  • FIG. 3 is a fragmentary sectional view drawn at increased scale and indicated by line IIIIII on FIG. 2.
  • a substantially conventional tamping foot which is in the form of a rectangular steel plate and adapted for being mounted on the end of a tamping arm, as by welding, or by any other suitable method has a leading edge perpendicular to the tamping arm and side edges parallel thereto, and is grooved along the side edges and the leading edge and blocks of hard wear resistant material, such as a cemented hard metal carbide, are fixedly mounted in the groove, thereby providing resistance to wear in those portions of the tamping foot which deteriorate most rapidly.
  • hard wear resistant material such as a cemented hard metal carbide
  • FIG. 1 shows a tie which is surrounded by ballast 12.
  • the tie 10 carries rail plates 14 to which a rail 16 is secured in a conventional manner.
  • the ballast 12 is preferably tamped in place around the tie and squeezed so as to provide a solid foundation for the tie and, to this end, a machine is provided, preferably running on the rails, and having a plurality of tamper arms 18 which are adapted for reciprocation and also for lateral movement to tamp the ballast and on the lower end of each of which is a tamping foot 20.
  • each tamping foot 20 is mounted on the lower end of the respective tamper arm 18 and is in the form of a substantially rectangular steel plate.
  • the side and leading edges of plate 20 are grooved with all of the grooves in the several edges in coplanar axial alignment.
  • the grooves are preferably all of the same cross sectional size and shape.
  • the side edges of the plate 20 are provided with grooves 22 and the leading edge is provided with groove 24.
  • Mounted in the several grooves are blocks 26 of a hard wear resistant material, such as a cemented metal carbide, which may be tungsten carbide.
  • the blocks are so dimensioned that a certain number thereof mounted in groove portion 24 will extend from side to side of the plate and project outwardly a short distance from the sides, while in the side edges of the plate, a plurality of blocks are disposed, extending from about the bottom of groove 24 to the opposite edge of the plate.
  • the end blocks in the groove at the leading edge of the plate thus overly the blocks in the grooves in the side edges of the plate in a protective manner.
  • Brazing material indicated at 28 may be employed for securing the blocks in place in the groove and to each other.
  • This brazing material may include a layer of brazing material 30 between the backs of the outermost end portions of the blocks in groove portion 24 and adjacent ends of the blocks in the groove portions 22.
  • brazing material 28 preferably extends about all three sides of each block which is disposed in a respective groove and may, if desired, extend between each adjacent pair of blocks.
  • FIG. 3 will also show that the grooves in the plate are substantially rectangular and that the blocks have a substantially rectangular portion fitting in the groove with sufficient clearance to accommodate the brazing material 28, while a roof shaped portion 32 of the block projects outwardly from the mouth of the groove at least a short predetermined distance.
  • the arrangement is such that those portions of the tamper foot which are subjected to the greatest degree of abrasion and wear are protected by the hard wear resistant blocks in the grooves so that the life of the tamper foot is greatly prolonged while at the same time the tamper foot tends to maintain the original shape thereof and is thus highly efficient in both tamping and squeezing operations.
  • edged tamping foot according to the present invention will even break up rocks that might interfere with proper compaction of the ballast whereby the ballast is more firmly tamped in place.
  • the tamping foot when worn to the point that it should be replaced, is cut off the lower end of the tamper support arm 18 and a new plate having the hard edging thereon is fixed in place on the tamper arm, as, for example, by welding.
  • a typical tamping machine of the type with which the present invention is used may have 16 tamper arms with corresponding tamper feet and, when the tamper feet are formed of steel, a considerable amount of maintenance is required to maintain the tamper in good operation condition because of the high wear rate of the tamper feet.
  • tamper feet according to the present invention are provided, however, the tamper can remain in operation for a prolonged period of time before it is necessary to renew the tamper feet.
  • the tampers may be driven at up to 3,000 strokes per minute, or more, by a motor having up to a three inch stroke.
  • a flat substantially rectangular plate adapted for mounting on the end of a tamper arm by welding, said plate having a leading edge perpendicular to and facing away from the tamper arm when the plate is mounted on the arm, said plate also having side edges, a groove formed in said leading edge and side edges, and block means of hard wear resistant material fixedly mounted in said groove and extending from side to side and end to end of the said groove, and projecting at least a short distance outwardly from the mouth of said groove.
  • each block is substantially longer than the depth of said groove portions and the end ones of the blocks in the said groove portion in the leading edge of said plate extending laterally over the ends of the blocks in the said groove portions in the side edges of said plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Road Paving Machines (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US00288395A 1972-09-12 1972-09-12 Tamper foot Expired - Lifetime US3793960A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28839572A 1972-09-12 1972-09-12

Publications (1)

Publication Number Publication Date
US3793960A true US3793960A (en) 1974-02-26

Family

ID=23106923

Family Applications (1)

Application Number Title Priority Date Filing Date
US00288395A Expired - Lifetime US3793960A (en) 1972-09-12 1972-09-12 Tamper foot

Country Status (5)

Country Link
US (1) US3793960A (xx)
JP (1) JPS5614803B2 (xx)
AU (1) AU472696B2 (xx)
DE (1) DE2345967C3 (xx)
GB (1) GB1418964A (xx)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3971323A (en) * 1975-02-19 1976-07-27 Teledyne Mid-America Corporation Tamping blade and a hard wear-resistant insert therefor
US4376553A (en) * 1980-02-12 1983-03-15 Gewerkschaft Eisenhutte Westfalia Floor cutter bit
US4903609A (en) * 1988-09-23 1990-02-27 Kennametal Inc. Tamping blade with improved inserts
US4911249A (en) * 1986-09-30 1990-03-27 Ticonderoga Pty. Ltd. Tool which uses soil as wearing edge
WO1990013710A1 (en) * 1989-05-12 1990-11-15 Crowell James E Tool for tamping ballast and the like
US20030133752A1 (en) * 2002-01-17 2003-07-17 Josef Theurer Tamping tine for a tamping machine
US20030138295A1 (en) * 2002-01-18 2003-07-24 Josef Theurer Tamping tine for a tamping machine
US20070186798A1 (en) * 2006-02-15 2007-08-16 Glenn Gevik Tamping blade for a railroad tamping machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5465105U (xx) * 1978-10-13 1979-05-09
SE447665B (sv) * 1983-02-03 1986-12-01 Bofors Wear Parts Ab Verktyg for sparjusteringsmaskiner samt sett att tillverka sadana verktyg
AT389335B (de) * 1987-03-05 1989-11-27 Plasser Bahnbaumasch Franz Stopfpickel fuer eine gleisstopfmaschine
RU207113U1 (ru) * 2021-06-25 2021-10-13 Леонид Михайлович Попко Подбойка машин для выправки, подбивки и рихтовки железнодорожного пути

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US107314A (en) * 1870-09-13 Improvement in snow-shovels
US2201023A (en) * 1940-05-14 Railroad tie tamping machine
US2617631A (en) * 1948-10-28 1952-11-11 Ingersoll Rand Co Rock drilling tool
US2693938A (en) * 1952-08-01 1954-11-09 Harry E Roberts Drilling bit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US107314A (en) * 1870-09-13 Improvement in snow-shovels
US2201023A (en) * 1940-05-14 Railroad tie tamping machine
US2617631A (en) * 1948-10-28 1952-11-11 Ingersoll Rand Co Rock drilling tool
US2693938A (en) * 1952-08-01 1954-11-09 Harry E Roberts Drilling bit

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3971323A (en) * 1975-02-19 1976-07-27 Teledyne Mid-America Corporation Tamping blade and a hard wear-resistant insert therefor
US4376553A (en) * 1980-02-12 1983-03-15 Gewerkschaft Eisenhutte Westfalia Floor cutter bit
US4911249A (en) * 1986-09-30 1990-03-27 Ticonderoga Pty. Ltd. Tool which uses soil as wearing edge
US4903609A (en) * 1988-09-23 1990-02-27 Kennametal Inc. Tamping blade with improved inserts
JPH081564U (ja) * 1988-09-23 1996-11-05 ケンナメタル インコ−ポレイテツド 突き固めブレード挿入体
WO1990013710A1 (en) * 1989-05-12 1990-11-15 Crowell James E Tool for tamping ballast and the like
US20030133752A1 (en) * 2002-01-17 2003-07-17 Josef Theurer Tamping tine for a tamping machine
US6877931B2 (en) * 2002-01-17 2005-04-12 Franz Plasser Bahnbaumaschinen-Industrie-Gesellschaft Tamping tine for a tamping machine
US20030138295A1 (en) * 2002-01-18 2003-07-24 Josef Theurer Tamping tine for a tamping machine
US7527452B2 (en) * 2002-01-18 2009-05-05 Franz Plasser Bahnbaumaschinen-Industrie-Gesellschaft Mbh Tamping tine for a tamping machine
US20070186798A1 (en) * 2006-02-15 2007-08-16 Glenn Gevik Tamping blade for a railroad tamping machine

Also Published As

Publication number Publication date
JPS4992803A (xx) 1974-09-04
DE2345967C3 (de) 1975-12-18
AU472696B2 (en) 1976-06-03
AU6024973A (en) 1975-03-13
DE2345967B2 (de) 1975-05-07
GB1418964A (en) 1975-12-24
JPS5614803B2 (xx) 1981-04-07
DE2345967A1 (de) 1974-03-28

Similar Documents

Publication Publication Date Title
US3793960A (en) Tamper foot
RU2061816C1 (ru) Вставка для лопатки шпалоподбойки и лопатка шпалоподбойки
US3971323A (en) Tamping blade and a hard wear-resistant insert therefor
US20050109235A1 (en) Tamping tool
US20020051682A1 (en) Tamping Tool
CA1176613A (en) Switch point guard
US3643864A (en) Railroad grade crossing
US6588676B1 (en) Concrete railroad grade crossing panels
US1588778A (en) Tie plate
US3826025A (en) Ground engaging unit for ballast tamping machines
US3877640A (en) Railroad cross supports and process for maintenance of track bed
US4899932A (en) Capped highway grade crossing
US2085970A (en) Rail securing and supporting device
CN219137268U (zh) 一种有砟轨道结构
US649629A (en) Railway-tie plate.
CN209703210U (zh) 一种改进的矿山窄轨防变形结构
RU2226581C1 (ru) Лопатка подбойки
US4315464A (en) Tamper tip for railroad tie tamping machines
RU2239016C2 (ru) Инструмент шпалоподбивочной машины
US2314750A (en) Combined rail anchor and ballast tamper
USRE17743E (en) George langtford
US1134455A (en) Combination tie-plate and rail-fastener.
EP1275781A2 (en) Apparatus and method for ballast replacement
CN206438348U (zh) 一种镐头及使用该镐头的捣镐
US770620A (en) Railway-track structure