WO2013154498A1 - A method for installing a liner plate and the liner plate - Google Patents

A method for installing a liner plate and the liner plate Download PDF

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Publication number
WO2013154498A1
WO2013154498A1 PCT/SG2012/000126 SG2012000126W WO2013154498A1 WO 2013154498 A1 WO2013154498 A1 WO 2013154498A1 SG 2012000126 W SG2012000126 W SG 2012000126W WO 2013154498 A1 WO2013154498 A1 WO 2013154498A1
Authority
WO
WIPO (PCT)
Prior art keywords
liner plate
grout
openings
plate
interface surface
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.)
Ceased
Application number
PCT/SG2012/000126
Other languages
French (fr)
Inventor
Ian James WILSON
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.)
MINE TO MILL EQUIPMENT Pte Ltd
Original Assignee
MINE TO MILL EQUIPMENT Pte Ltd
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 MINE TO MILL EQUIPMENT Pte Ltd filed Critical MINE TO MILL EQUIPMENT Pte Ltd
Priority to AU2012376833A priority Critical patent/AU2012376833B2/en
Priority to EP12874302.8A priority patent/EP2836652A4/en
Priority to PCT/SG2012/000126 priority patent/WO2013154498A1/en
Priority to US14/391,894 priority patent/US9610991B2/en
Priority to CA2895922A priority patent/CA2895922C/en
Publication of WO2013154498A1 publication Critical patent/WO2013154498A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
    • B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2883—Wear elements for buckets or implements in general
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/01—Liners for load platforms or load compartments
    • 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
    • Y10T29/49826—Assembling or joining

Definitions

  • the present invention relates to liner plates used in mobile earth-moving machinery.
  • Liner plates are employed in mobile earth-moving machinery, specifically at interface surfaces of load-bearing portions such as, for example, bucket trays, truck trays and the like.
  • the liner plates are typically welded to the interface surfaces of load-bearing portions and function primarily as a wear/sacrificial damage item, so as to protect and maintain the integrity of the material used at the load-bearing portions.
  • the liner plates are replaced when worn out (for example, due to abrasion, repeated impacts, and so forth) if the plates do not fail prior to replacement.
  • a method for installing a liner plate mounted on an Interface surface of a load-bearing portion of mobile earth-moving machinery includes at least two openings and at least one grout strip, with the at least one grout strip being along a perimeter of the liner plate.
  • the method includes filling a space defined by the at least one grout strip with grout; and allowing air to exit from the space.
  • the air exits through a first of the at least two openings of the liner plate.
  • the grout is filled through a second of the at least two openings of the liner plate.
  • the method includes welding the liner plate to the interface surface, the welding being seam-welding and covering the at least two openings.
  • the method may further including coating the interface surface with lubricant.
  • the hardening of the grout enables the liner plate and the load-bearing portion to form a single structure with loads being distributed within the single structure. It is advantageous that the grout fully covers the interface surface.
  • a liner plate for mounting on an interface surface of a load-bearing portion of mobile earth-moving machinery.
  • the plate includes at least two openings, whereby a first opening of the at least two openings is configured for passage of grout and a second opening of the at least two openings is configured for passage of air.
  • the plate also further includes at least one grout strip along a perimeter of the liner plate. The at least one grout strip is fabricated from mild steel.
  • the at least two openings each include a securing mechanism, whereby each securing mechanism is sized to allow the placement of a cover in each of the at least two openings. It is preferable that the securing mechanism is configured for removable attachment of conduits to the liner plate.
  • Figure 1 shows various views of an embodiment of a liner plate of the present invention.
  • Figure 2 shows a cross-sectional view of the carrying out of a method of the present invention.
  • Figure 3 shows a process flow for the method of Figure 2.
  • the present invention relates to a method for installing a liner plate and also relates to the liner plate per se.
  • FIG. 1 there is shown various views of an embodiment of a liner plate 20.
  • the liner plate 20 is usable for mounting on an interface surface of a load-bearing portion of mobile earth-moving machinery.
  • the load-bearing portion includes, for example, bucket trays, truck trays and the like.
  • a top view of the liner plate 20 is shown with a first edge A being cut off to reveal a detailed view of a first opening 24.
  • the liner plate 20 includes at least two openings 22, 24.
  • the first opening 24 is configured for passage of grout and a second opening 22 is configured for passage of air. It should be appreciated that the first opening 24 also allows passage of air and the second opening 22 also allows passage of grout.
  • the first opening 24 and the second opening 22 each include a first securing mechanism 24(a) and a second securing mechanism 22(a) respectively.
  • the first securing mechanism 24(a) and the second securing mechanism 22(a) may be identical, and need not be of the "screw-in" form shown in Figure 1.
  • the securing mechanism 24(a), 22(a) is for the removable attachment of conduits to the liner plate.
  • Each securing mechanism 24(a), 22(a) should be sized to allow the placement of a cover in each of the at least two openings 22, 24. Even though the securing mechanism 24(a), 22(a) is shown to be located at or closer to a first face 28 of the liner plate 20, it should be appreciated that the securing mechanism 24(a), 22(a) may also be located at or closer to a second face 30 of the liner plate 20.
  • the liner plate 20 may also include at least one grout strip 26 on the first face 28, whereby the at least one grout strip 26 is positioned along a perimeter of the liner plate 20. It should be appreciated that along the perimeter means at or close to the perimeter of the liner plate 20.
  • the at least one grout strip 26 may comprise several parts but the several parts should be continuously joined to one another without any substantial gaps at the joints.
  • the at least one grout strip 26 may be fabricated separately and subsequently permanently affixed to the liner plate 20. While the at least one grout strip 26 is shown to be located on the first face 28, it should be appreciated that the at least one grout strip 26 should be located at a face of the liner plate 20 which is mounted on an interface surface of a load-bearing portion of mobile earth-moving machinery.
  • the at least one grout strip 26 is 3mm thick and 23mm wide and fabricated from mild steel.
  • the at least one grout strip 26 should be fabricated from a material which is able to be welded and will not reduce a structural strength of a weld which adheres to the at least one grout strip 26.
  • the method 40 for installing the liner plate 20 mounted on an interface surface 42 of a load-bearing portion 44 of mobile earth-moving machinery includes, for example, bucket trays, truck trays and the like.
  • the method 40 includes coating the interface surface 42 with lubricant (79) and subsequently welding the liner plate 20 to the surface 42 (80), the liner plate 20 being seam-welded 46 to the surface 42 (shown in Figure 2(a)).
  • the method 40 includes filling a space 50 defined by the liner plate 20, the at least one grout strip 26, and the interface surface 42 with grout (82) through a first conduit 48.
  • the first conduit 48 should be removably attached to the securing mechanism 24(a) of the first opening 24 of the liner plate 20.
  • Grout is channeled into the space 50 via the first conduit 48 such that the grout fully covers the interface surface 42.
  • the method 40 also includes allowing air to exit from the space 50 (84), whereby the air exits through the second opening 22 of the liner plate 20, specifically through a second conduit 52 removably attached to the securing mechanism 22(a) of the second opening 22. The exit of the air from the space 50 removes voids in the grout (shown in Figure 2(b)).
  • the method 40 also includes covering the two openings 24, 22 (86) after removal of the first conduit 48 and the second conduit 52 from the liner plate 20.
  • the two openings 24, 22 can be covered by hard facings 60 welded over the openings 24, 22 (shown in Figure 2(c)).
  • the grout enables ease of removal of the liner plate 20 from the interface surface 42.
  • the liner plate 20 and the load bearing portion 44 forms a single structure, it becomes possible to utilize thinner and consequently lighter liner plates 20, which aids in minimizing cost of the liner plates 20. Furthermore, since the method 40 minimises relative movement of the liner plate 20 with the interface surface 42, cracks in the welds 46 between the liner plate 20 with the interface surface 42 are also minimized, and this correspondingly minimizes pre-mature liner plate 20 failure due to weld cracks. As pre-mature failure of the liner plate 20 is minimized, the usage duration of the liner plate 20 is consequently prolonged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Railway Tracks (AREA)
  • Lining And Supports For Tunnels (AREA)

Description

A METHOD FOR INSTALLING A LINER PLATE AND THE LINER PLATE
FIELD OF INVENTION
The present invention relates to liner plates used in mobile earth-moving machinery.
BACKGROUND
Liner plates are employed in mobile earth-moving machinery, specifically at interface surfaces of load-bearing portions such as, for example, bucket trays, truck trays and the like. The liner plates are typically welded to the interface surfaces of load-bearing portions and function primarily as a wear/sacrificial damage item, so as to protect and maintain the integrity of the material used at the load-bearing portions. Furthermore, the liner plates are replaced when worn out (for example, due to abrasion, repeated impacts, and so forth) if the plates do not fail prior to replacement.
Currently, with mobile earth-moving machinery, even when new, there is typically a gap between the interface surface of the load-bearing portion and the liner plate. This is particularly true for instances when there is any curvature on the interface surface and/or the interface surface is uneven due to prior damage from, for example, impacts, abrasions, and so forth. Damage to the interface surface is particularly significant whenever the liner plate is worn down to the interface surface of the load-bearing portion.
One of the main causes of premature liner plate failure (i.e. before it is worn down to its residual thickness) is due to fatigue cracks developing in the welds due to flexure of the liner plate. The break in the welds causes the liner plate to come off in part or completely. This is undesirable in view of the damage which is caused to the interface surface and also the danger caused by the separation of the liner plate from the interface surface. It is also an additional financial burden if the liner plates fail pre-maturely due to the need for more liner plates and the down-time for the mobile earth-moving machinery resulting from the time required to replace the liner plates.
SUMMARY
In a first aspect, there is provided a method for installing a liner plate mounted on an Interface surface of a load-bearing portion of mobile earth-moving machinery. The liner plate includes at least two openings and at least one grout strip, with the at least one grout strip being along a perimeter of the liner plate.
The method includes filling a space defined by the at least one grout strip with grout; and allowing air to exit from the space. Preferably, the air exits through a first of the at least two openings of the liner plate. Preferably, the grout is filled through a second of the at least two openings of the liner plate.
In addition, the method includes welding the liner plate to the interface surface, the welding being seam-welding and covering the at least two openings. The method may further including coating the interface surface with lubricant.
It is preferable that the hardening of the grout enables the liner plate and the load-bearing portion to form a single structure with loads being distributed within the single structure. It is advantageous that the grout fully covers the interface surface.
In a second aspect, there is provided a liner plate for mounting on an interface surface of a load-bearing portion of mobile earth-moving machinery. The plate includes at least two openings, whereby a first opening of the at least two openings is configured for passage of grout and a second opening of the at least two openings is configured for passage of air. The plate also further includes at least one grout strip along a perimeter of the liner plate. The at least one grout strip is fabricated from mild steel.
Preferably, the at least two openings each include a securing mechanism, whereby each securing mechanism is sized to allow the placement of a cover in each of the at least two openings. It is preferable that the securing mechanism is configured for removable attachment of conduits to the liner plate.
DESCRIPTION OF FIGURES
In order that the present invention may be fully understood and readily put into practical effect, there shall now be described by way of non-limitative example only preferred embodiments of the present invention, the description being with reference to the accompanying illustrative figures.
Figure 1 shows various views of an embodiment of a liner plate of the present invention.
Figure 2 shows a cross-sectional view of the carrying out of a method of the present invention.
Figure 3 shows a process flow for the method of Figure 2. DESCRIPTION OF PREFERRED EMBODIMENTS
The present invention relates to a method for installing a liner plate and also relates to the liner plate per se. Some advantages of the invention, which will be evident from the disclosure of the subsequent paragraphs, include prolonging the usage duration for a liner plate, minimising dangers due to pre-mature failure of liner plates, and minimising cost for users.
Referring to Figure 1 , there is shown various views of an embodiment of a liner plate 20. The liner plate 20 is usable for mounting on an interface surface of a load-bearing portion of mobile earth-moving machinery. The load-bearing portion includes, for example, bucket trays, truck trays and the like. In Figure 1 , a top view of the liner plate 20 is shown with a first edge A being cut off to reveal a detailed view of a first opening 24.
The liner plate 20 includes at least two openings 22, 24. The first opening 24 is configured for passage of grout and a second opening 22 is configured for passage of air. It should be appreciated that the first opening 24 also allows passage of air and the second opening 22 also allows passage of grout. The first opening 24 and the second opening 22 each include a first securing mechanism 24(a) and a second securing mechanism 22(a) respectively. The first securing mechanism 24(a) and the second securing mechanism 22(a) may be identical, and need not be of the "screw-in" form shown in Figure 1. The securing mechanism 24(a), 22(a) is for the removable attachment of conduits to the liner plate. Each securing mechanism 24(a), 22(a) should be sized to allow the placement of a cover in each of the at least two openings 22, 24. Even though the securing mechanism 24(a), 22(a) is shown to be located at or closer to a first face 28 of the liner plate 20, it should be appreciated that the securing mechanism 24(a), 22(a) may also be located at or closer to a second face 30 of the liner plate 20.
The liner plate 20 may also include at least one grout strip 26 on the first face 28, whereby the at least one grout strip 26 is positioned along a perimeter of the liner plate 20. It should be appreciated that along the perimeter means at or close to the perimeter of the liner plate 20. The at least one grout strip 26 may comprise several parts but the several parts should be continuously joined to one another without any substantial gaps at the joints. The at least one grout strip 26 may be fabricated separately and subsequently permanently affixed to the liner plate 20. While the at least one grout strip 26 is shown to be located on the first face 28, it should be appreciated that the at least one grout strip 26 should be located at a face of the liner plate 20 which is mounted on an interface surface of a load-bearing portion of mobile earth-moving machinery. In one embodiment, the at least one grout strip 26 is 3mm thick and 23mm wide and fabricated from mild steel. The at least one grout strip 26 should be fabricated from a material which is able to be welded and will not reduce a structural strength of a weld which adheres to the at least one grout strip 26.
The advantages brought about from use of the liner plate 20 will be evident when the liner plate 20 is used in the method 40 of the present invention which will be described in the following paragraphs.
Referring to Figures 2 and 3, there is provided the method 40 for installing the liner plate 20 mounted on an interface surface 42 of a load-bearing portion 44 of mobile earth-moving machinery. The load-bearing portion includes, for example, bucket trays, truck trays and the like.
The method 40 includes coating the interface surface 42 with lubricant (79) and subsequently welding the liner plate 20 to the surface 42 (80), the liner plate 20 being seam-welded 46 to the surface 42 (shown in Figure 2(a)).
Subsequently, the method 40 includes filling a space 50 defined by the liner plate 20, the at least one grout strip 26, and the interface surface 42 with grout (82) through a first conduit 48. The first conduit 48 should be removably attached to the securing mechanism 24(a) of the first opening 24 of the liner plate 20. Grout is channeled into the space 50 via the first conduit 48 such that the grout fully covers the interface surface 42. The method 40 also includes allowing air to exit from the space 50 (84), whereby the air exits through the second opening 22 of the liner plate 20, specifically through a second conduit 52 removably attached to the securing mechanism 22(a) of the second opening 22. The exit of the air from the space 50 removes voids in the grout (shown in Figure 2(b)).
When the grout fully covers the interface surface 42 and voids in the grout are minimized, an incidence of grout failure is minimized as relative movement of the liner plate 20 with the interface surface 42 is minimized. Furthermore, hardening of the grout enables the liner plate 20 and the load-bearing portion 44 to form a single structure with loads being distributed within the single structure.
Finally, the method 40 also includes covering the two openings 24, 22 (86) after removal of the first conduit 48 and the second conduit 52 from the liner plate 20. The two openings 24, 22 can be covered by hard facings 60 welded over the openings 24, 22 (shown in Figure 2(c)).
In an embodiment of method 40 where the interface surface 42 is coated with lubricant (79), the grout enables ease of removal of the liner plate 20 from the interface surface 42.
It should be appreciated that since the liner plate 20 and the load bearing portion 44 forms a single structure, it becomes possible to utilize thinner and consequently lighter liner plates 20, which aids in minimizing cost of the liner plates 20. Furthermore, since the method 40 minimises relative movement of the liner plate 20 with the interface surface 42, cracks in the welds 46 between the liner plate 20 with the interface surface 42 are also minimized, and this correspondingly minimizes pre-mature liner plate 20 failure due to weld cracks. As pre-mature failure of the liner plate 20 is minimized, the usage duration of the liner plate 20 is consequently prolonged.
Whilst there has been described in the foregoing description preferred embodiments of the present invention, it will be understood by those skilled in the technology concerned that many variations or modifications in details of design or construction may be made without departing from the present invention.

Claims

1. A method for installing a liner plate mounted on an interface surface of a load-bearing portion of mobile earth-moving machinery, the liner plate including at least two openings and at least one grout strip, the at least one grout strip being along a perimeter of the liner plate, the method including:
filling a space defined by the at least one grout strip with grout; and allowing air to exit from the space,
wherein the air exits through a first of the at least two openings of the liner plate.
2. The method of claim 1 , further including:
welding the liner plate to the interface surface, the welding being seam- welding; and
covering the at least two openings.
3. The method of either claim 1 or 2, wherein the grout is filled through a second of the at least two openings of the liner plate.
4. The method of any one of claims 1 to 3, wherein hardening of the grout enables the liner plate and the load-bearing portion to form a single structure with loads being distributed within the single structure.
5. The method of any one of claims 1 to 4, wherein the grout fully covers the interface surface.
6. The method of any one of claims 1 to 5, further including coating the interface surface with lubricant.
7. A liner plate for mounting on an interface surface of a load-bearing portion of mobile earth-moving machinery, the plate including at least two openings, wherein a first opening of the at least two openings is configured for passage of grout and a second opening of the at least two openings is configured for passage of air.
8. The plate of claim 7, further including at least one grout strip along a perimeter of the liner plate.
9. The plate of claim 8, wherein the at least one grout strip is fabricated from mild steel.
10. The plate of any one of claims 7 to 9, wherein the at least two openings each include a securing mechanism.
11. The plate of claim 10, wherein each securing mechanism is sized to allow the placement of a cover in each of the at least two openings.
12. The plate of either claim 10 or 11 , wherein the securing mechanism is configured for removable attachment of conduits to the liner plate.
PCT/SG2012/000126 2012-04-12 2012-04-12 A method for installing a liner plate and the liner plate Ceased WO2013154498A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU2012376833A AU2012376833B2 (en) 2012-04-12 2012-04-12 A method for installing a liner plate and the liner plate
EP12874302.8A EP2836652A4 (en) 2012-04-12 2012-04-12 METHOD OF INSTALLING DOUBLE PLATE AND DOUBLING PLATE
PCT/SG2012/000126 WO2013154498A1 (en) 2012-04-12 2012-04-12 A method for installing a liner plate and the liner plate
US14/391,894 US9610991B2 (en) 2012-04-12 2012-04-12 Method for installing a liner plate and the liner plate
CA2895922A CA2895922C (en) 2012-04-12 2012-04-12 A method for installing a liner plate and the liner plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SG2012/000126 WO2013154498A1 (en) 2012-04-12 2012-04-12 A method for installing a liner plate and the liner plate

Publications (1)

Publication Number Publication Date
WO2013154498A1 true WO2013154498A1 (en) 2013-10-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SG2012/000126 Ceased WO2013154498A1 (en) 2012-04-12 2012-04-12 A method for installing a liner plate and the liner plate

Country Status (5)

Country Link
US (1) US9610991B2 (en)
EP (1) EP2836652A4 (en)
AU (1) AU2012376833B2 (en)
CA (1) CA2895922C (en)
WO (1) WO2013154498A1 (en)

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Also Published As

Publication number Publication date
EP2836652A4 (en) 2016-05-04
AU2012376833A1 (en) 2014-10-30
US20150274229A1 (en) 2015-10-01
CA2895922A1 (en) 2013-10-17
US9610991B2 (en) 2017-04-04
EP2836652A1 (en) 2015-02-18
CA2895922C (en) 2017-06-20
AU2012376833B2 (en) 2017-02-09

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