US3921728A - Weldment for bulldozer blades - Google Patents

Weldment for bulldozer blades Download PDF

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Publication number
US3921728A
US3921728A US469337A US46933774A US3921728A US 3921728 A US3921728 A US 3921728A US 469337 A US469337 A US 469337A US 46933774 A US46933774 A US 46933774A US 3921728 A US3921728 A US 3921728A
Authority
US
United States
Prior art keywords
groove
weldment
dam
members
push plate
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
US469337A
Other languages
English (en)
Inventor
Thomas P Casey
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor 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 Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Priority to US469337A priority Critical patent/US3921728A/en
Priority to US05/554,247 priority patent/US3964287A/en
Priority to US05/554,267 priority patent/US3951559A/en
Priority to US05/554,246 priority patent/US3987953A/en
Priority to BR2360/75A priority patent/BR7501848A/pt
Priority to CA225,755A priority patent/CA1028534A/fr
Priority to GB19703/75A priority patent/GB1505850A/en
Priority to JP50054798A priority patent/JPS50155443A/ja
Priority to ZA00753068A priority patent/ZA753068B/xx
Priority to IN1089/CAL/75A priority patent/IN143907B/en
Application granted granted Critical
Publication of US3921728A publication Critical patent/US3921728A/en
Assigned to CATERPILLAR INC., A CORP. OF DE. reassignment CATERPILLAR INC., A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CATERPILLAR TRACTOR CO., A CORP. OF CALIF.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/80—Component parts
    • E02F3/815—Blades; Levelling or scarifying tools
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/47—Molded joint
    • Y10T403/477—Fusion bond, e.g., weld, etc.

Definitions

  • a bulldozer blade comprises a push plate having a cutting edge mounted on a lower end thereof and a plurality of structural members secured on the back of the push plate and welded together to increase the structural integrity thereof.
  • Each adjacent pair of such members are joined together at a weldment comprising a groove and contiguous dam formed on a surface of one member to have a corner of the other member disposed adjacent thereto and common weld means at least substantially filling the groove and securing the members together.
  • the groove and dam are preformed on an arcuate portion of the first member during a cold forming operation.
  • An object of this invention is to overcome'the above, briefly described problem by providing a structurally sound and economical weldment, particularly adapted for use in work implements such as bulldozer blades, and a method and apparatus for making the same.
  • the weldment comprises a first member having a groove and contiguous dam formed on a surface thereof, a second member having a corner thereof disposed closely adjacent to the groove and dam and common weld means at least substantially filling the groove and securing the members together.
  • the groove and dam are preformed on the first member by a forming roll of an apparatus which further comprises a plurality of support rollers mounted on either side of the member.
  • FIG. 1 is a cross sectional view, in elevation, of a bulldozer blade having four weldments of this invention structurally integrated therein;
  • FIG. 2 is an enlarged fragmentary view of one of the weldments
  • FIG. 3 is a sectional view of an apparatus used to preform a groove and contiguous dam in a structural member employed in such weldment;
  • FIG. 4 is a cross sectional view similar to FIG. 2, illustrating a prior art weldment.
  • FIG. 1 discloses a bulldozer blade comprising a push plate 11 having an elongated cutting edge 12 mounted on a lower end thereof and a pair of mold board plates 13 (one shown) secured on opposite, lateral ends thereof.
  • the push plate is structurally reinforced by securing a plurality of metallic members on a back side thereof, including a pair of channel members 14 and 15, a pair of arcuate plate members 16 and 17 and a flat plate member 18.
  • the blade may be further reinforced by plate members 19 and 20 and a plurality of gusset members 21 (one shown).
  • each weldment comprises a common weld means 23 securing each pair of adjacent first and second members, such as members 16 and .18, together.
  • First member 16 has a groove 24' of predetermined depth (1 formed on a surface thereofto terminate at one side 7 thereof at a contiguous, raised dam 25 of predetermined height 12, above such surface.
  • Second member 18 has a corner 26 thereof preferably disposed within the groove and closely adjacent to the dam.
  • the dam will function to back-up the hot weld metal to prevent blow through" thereof during an arc welding operation.
  • Weld 23 at least substantially fills groove 24 and secures corner 26 and a contiguous bottom flat surface 27 of member 18 to the outer surface of member 16.
  • dimensions d and h are at least approximately equal.
  • dimension d is preferably selected from the range of from O. 1W to 025W, with W constituting the wall thickness of member 16.
  • member 18 can be positioned within manufacturing tolerance ranges t and T without affecting the integrity of weld 23.
  • FIG. 3 illustrates an apparatus and method for preforming groove 24 and dam 25 on the outer arcuate surface of member 16, for example.
  • Such apparatus comprises first and second support and guide assemblies 28 anmd 29, respectively disposed on either side of member 16.
  • First assembly 28 comprises a pair of first and second support rollers 30, disposed for rotation on axes perpendicular to each other.
  • Second assembly 29 comprises a like pair of third and fourth guide rollers 31 and 32 disposed for rotation on axes perpendicular to each other. Each of the latter rollers at least partially overlies a respective roller 30. Assembly 29 further comprises a rotary forming roll or die 33, rotatably mounted thereon about an axis parallel to the rotational axis of roller 31.
  • Rotary forming roll 33 is preferably driven by motor means, not shown, and has an annular cutting edge 34 formed on the periphery thereof. During the preforming operation, cutting edge 34 forms elongated groove 24 and displaces material therefrom upwardly to form darn 25. It should be understood that different sized rollers could be substituted in lieu of roller 33 to vary the size and shape of groove 24 and dam 25.
  • FIG. 4 illustrates a prior art weldment comprising a first member 16' secured to a second member 18' by an elongated weld 23'.
  • member 18 has been positioned on the outer arcuate surface of member 16' so that at least a portion of its corner 26' is disposed in line contact therewith.
  • Such disposition represents an ideal disposition for manufacturing purposes wherein a zero root gap RG is provided.
  • a weldment for a bulldozer blade comprising a first member
  • common weld means at least substantially filling.
  • said groove and securing said first and second members together'and y r a bulldozer blade including a push plate having-adjacent pairs of said first and second members secured on a back side of said push plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
US469337A 1974-05-13 1974-05-13 Weldment for bulldozer blades Expired - Lifetime US3921728A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US469337A US3921728A (en) 1974-05-13 1974-05-13 Weldment for bulldozer blades
US05/554,247 US3964287A (en) 1974-05-13 1975-02-28 Apparatus for forming a groove and back-up dam for welds
US05/554,267 US3951559A (en) 1974-05-13 1975-02-28 Weldment for bulldozer blades
US05/554,246 US3987953A (en) 1974-05-13 1975-02-28 Weldment for bulldozer blades and method and apparatus therefor
BR2360/75A BR7501848A (pt) 1974-05-13 1975-03-26 Processo para fazer umas soldadura e aparelho para formar um chanfro alongado
CA225,755A CA1028534A (fr) 1974-05-13 1975-04-29 Methode et appareil pour le soudage des lames de boutoirs
GB19703/75A GB1505850A (en) 1974-05-13 1975-05-09 Preparing a metal sheet member for joining to a second metal member
JP50054798A JPS50155443A (fr) 1974-05-13 1975-05-12
ZA00753068A ZA753068B (en) 1974-05-13 1975-05-13 Weldment for bulldozer blades and method and apparatus therefor
IN1089/CAL/75A IN143907B (fr) 1974-05-13 1975-05-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US469337A US3921728A (en) 1974-05-13 1974-05-13 Weldment for bulldozer blades

Related Child Applications (3)

Application Number Title Priority Date Filing Date
US05/554,246 Division US3987953A (en) 1974-05-13 1975-02-28 Weldment for bulldozer blades and method and apparatus therefor
US05/554,247 Division US3964287A (en) 1974-05-13 1975-02-28 Apparatus for forming a groove and back-up dam for welds
US05/554,267 Division US3951559A (en) 1974-05-13 1975-02-28 Weldment for bulldozer blades

Publications (1)

Publication Number Publication Date
US3921728A true US3921728A (en) 1975-11-25

Family

ID=23863388

Family Applications (1)

Application Number Title Priority Date Filing Date
US469337A Expired - Lifetime US3921728A (en) 1974-05-13 1974-05-13 Weldment for bulldozer blades

Country Status (7)

Country Link
US (1) US3921728A (fr)
JP (1) JPS50155443A (fr)
BR (1) BR7501848A (fr)
CA (1) CA1028534A (fr)
GB (1) GB1505850A (fr)
IN (1) IN143907B (fr)
ZA (1) ZA753068B (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3986784A (en) * 1975-04-09 1976-10-19 Caterpillar Tractor Co. Weldment
US4074767A (en) * 1976-06-14 1978-02-21 Caterpillar Tractor Co. Motor grader support structure and side shift mechanism
US5645364A (en) * 1993-06-25 1997-07-08 Fuji Jukogyo Kabushiki Kaisha Structure for joining plate elements
US20070256334A1 (en) * 2001-11-12 2007-11-08 Charles Schmeichel Snow plow having internally reinforced mold board
US7627965B2 (en) 2001-11-12 2009-12-08 Agri-Cover, Inc. Plow blade having integrally formed attachment channel
US7669353B2 (en) 2001-11-12 2010-03-02 Agri-Cover, Inc. Snow plow having hitch tongue connecting member
US7676963B2 (en) 2001-11-12 2010-03-16 Agri-Cover, Inc. Snow plow including mold board having back plate
US7676964B2 (en) * 2001-11-12 2010-03-16 Agri-Cover, Inc. Snow plow having wear minimizing apparatus
US7681335B2 (en) 2001-11-12 2010-03-23 Agri-Cover, Inc. Snow plow having attachable biasing member
US7703222B2 (en) * 2001-11-12 2010-04-27 Agri-Cover, Inc. Snow plow having hitch tongue and pivoting mechanism
US7707753B2 (en) 2001-11-12 2010-05-04 Agri-Cover, Inc. Multifunctional plow blade positioning apparatus and method
US7735247B2 (en) * 2001-11-12 2010-06-15 Agri-Cover, Inc. Snow plow for all terrain vehicle
US7735245B2 (en) * 2001-11-12 2010-06-15 Agri-Cover, Inc. Snow plow having catch structure
US7743534B2 (en) * 2001-11-12 2010-06-29 Agri-Cover, Inc. Snow plow having two-piece mold board
US7784199B2 (en) 2001-11-12 2010-08-31 Agri-Cover, Inc. Snow plow having pivotal mounting apparatus
US8037625B2 (en) 2003-03-31 2011-10-18 Agri-Cover, Inc. Snow plow having pivotal mounting apparatus
US8875419B2 (en) 2001-11-12 2014-11-04 Agri-Cover, Inc. Snow plow

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07233B2 (ja) * 1990-12-28 1995-01-11 川崎重工業株式会社 裏波ビード溶接方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3003601A (en) * 1957-04-04 1961-10-10 Sulzer Ag Weld connection
US3233350A (en) * 1963-10-24 1966-02-08 Charles Machine Works Quick detachable backfill blade for trencher
US3458224A (en) * 1968-01-10 1969-07-29 Cessna Aircraft Co Weld joint

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3003601A (en) * 1957-04-04 1961-10-10 Sulzer Ag Weld connection
US3233350A (en) * 1963-10-24 1966-02-08 Charles Machine Works Quick detachable backfill blade for trencher
US3458224A (en) * 1968-01-10 1969-07-29 Cessna Aircraft Co Weld joint

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3986784A (en) * 1975-04-09 1976-10-19 Caterpillar Tractor Co. Weldment
US4074767A (en) * 1976-06-14 1978-02-21 Caterpillar Tractor Co. Motor grader support structure and side shift mechanism
US5645364A (en) * 1993-06-25 1997-07-08 Fuji Jukogyo Kabushiki Kaisha Structure for joining plate elements
US7703222B2 (en) * 2001-11-12 2010-04-27 Agri-Cover, Inc. Snow plow having hitch tongue and pivoting mechanism
US7735247B2 (en) * 2001-11-12 2010-06-15 Agri-Cover, Inc. Snow plow for all terrain vehicle
US7669353B2 (en) 2001-11-12 2010-03-02 Agri-Cover, Inc. Snow plow having hitch tongue connecting member
US7676963B2 (en) 2001-11-12 2010-03-16 Agri-Cover, Inc. Snow plow including mold board having back plate
US7676962B2 (en) * 2001-11-12 2010-03-16 Agri-Cover, Inc. Snow plow having reinforced mold board
US7676964B2 (en) * 2001-11-12 2010-03-16 Agri-Cover, Inc. Snow plow having wear minimizing apparatus
US7681335B2 (en) 2001-11-12 2010-03-23 Agri-Cover, Inc. Snow plow having attachable biasing member
US20070256334A1 (en) * 2001-11-12 2007-11-08 Charles Schmeichel Snow plow having internally reinforced mold board
US7707753B2 (en) 2001-11-12 2010-05-04 Agri-Cover, Inc. Multifunctional plow blade positioning apparatus and method
US7627965B2 (en) 2001-11-12 2009-12-08 Agri-Cover, Inc. Plow blade having integrally formed attachment channel
US7735245B2 (en) * 2001-11-12 2010-06-15 Agri-Cover, Inc. Snow plow having catch structure
US7743534B2 (en) * 2001-11-12 2010-06-29 Agri-Cover, Inc. Snow plow having two-piece mold board
US7784199B2 (en) 2001-11-12 2010-08-31 Agri-Cover, Inc. Snow plow having pivotal mounting apparatus
US20100229432A1 (en) * 2001-11-12 2010-09-16 Agri-Cover, Inc. Snow plow having limiting member
US8875419B2 (en) 2001-11-12 2014-11-04 Agri-Cover, Inc. Snow plow
US8069590B2 (en) * 2001-11-12 2011-12-06 Agri-Cover, Inc. Snow plow having limiting member
US8037625B2 (en) 2003-03-31 2011-10-18 Agri-Cover, Inc. Snow plow having pivotal mounting apparatus

Also Published As

Publication number Publication date
IN143907B (fr) 1978-02-25
BR7501848A (pt) 1976-03-23
GB1505850A (en) 1978-03-30
JPS50155443A (fr) 1975-12-15
ZA753068B (en) 1976-04-28
CA1028534A (fr) 1978-03-28

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CATERPILLAR INC., 100 N.E. ADAMS STREET, PEORIA, I

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905

Effective date: 19860515

Owner name: CATERPILLAR INC., A CORP. OF DE.,ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905

Effective date: 19860515