CN117120691A - Corner half arrow for bucket - Google Patents
Corner half arrow for bucket Download PDFInfo
- Publication number
- CN117120691A CN117120691A CN202180085657.0A CN202180085657A CN117120691A CN 117120691 A CN117120691 A CN 117120691A CN 202180085657 A CN202180085657 A CN 202180085657A CN 117120691 A CN117120691 A CN 117120691A
- Authority
- CN
- China
- Prior art keywords
- corner
- arrow
- half arrow
- axis
- bucket
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000001066 destructive effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Component Parts Of Construction Machinery (AREA)
- Connection Of Plates (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
Disclosed herein is a corner half arrow (1) configured to be attached to a leading edge (2) of a bucket lip (3) of a bucket (21). The corner half arrow includes: -a back portion (6) configured to be attached to a corner portion (13) of the leading edge; and an inner portion (7) configured to be attached to a side portion of an adjacent middle half arrow (8). The back portion is configured such that: when the corner half arrow is attached to the middle half arrow, the corner half arrow fills a space defined between the corner portion and a central axis along which a central portion of the leading edge extends. A half-arrow kit and a system are also disclosed.
Description
The present application claims priority from EP 20215738.4 filed 12/18 in 2020, the disclosure of which is incorporated herein by reference in its entirety.
Technical Field
The present application relates to improvements in wear parts for buckets of earth moving equipment.
Background
The present application relates to a bucket for use with earth-moving equipment and to a wearing part/ground engaging tool connected to such a bucket.
Ground Engaging Tools (GETs) for earth moving equipment, such as those GET used in mining operations, operate in highly abrasive environments, experience high impact forces and thus wear out or damage during use. Thus, teeth such as those used on the front lip or edge of the bucket of an earth moving apparatus require periodic replacement.
Traditionally, the GET is welded to the lip of the bucket. When the GET's service life is over, the GET may be cut from the bucket and a new GET welded in their place.
Sometimes, the corners or other parts or portions (sections) of the bucket are pre-cast from steel, and then the floor, any side structures and the cast corners are welded together. Such welding is a time consuming and expensive process that must typically be done in a shop to ensure accuracy and quality of the reconstruction. Plant downtime can increase productivity losses and business operating costs. Therefore, structural failure of the bucket is to be avoided. The present application has been achieved in view of these problems.
A particular problem relates to a bucket whose lip is protected by half arrows (half arrows) attached to the leading edge of the bucket's lip for protecting the lip. Two opposite corners of the bucket lip are provided with a GET in the form of corner half arrows, and a plurality of intermediate half arrows are attached to the leading edge of the bucket lip between the two corner half arrows. A particular problem associated with this bucket is that structural failure of the corner portion of the bucket lip due to continued use of the bucket after the lifetime of the corner half arrow has elapsed.
One known bucket and associated ground engaging tool is disclosed in AU 2013311372B. Another known ground engaging tool of the bolting type is disclosed in US3029534 a. DE1952397U and U4044481a both relate to the art of ground engaging tools for bucket corners.
Thus, it is an object of the present disclosure to mitigate structural failure of a lip of a bucket while reducing downtime for repair and restoration of the bucket (including any half arrow).
Disclosure of Invention
According to a first aspect of the present disclosure, the above object is achieved by a corner half arrow as defined in the appended claim 1, having the embodiments as defined in the dependent claims. The corner half arrow is configured to attach to a leading edge of a lip of a bucket, wherein the leading edge includes a central portion and a corner portion. The central portion extends along and coincides with a central axis (also referred to as a third longitudinal axis), while the corner portions may be retracted from the central axis, defining a space between the corner portions and the central axis. The corner half arrow includes: a back portion configured to attach to a corner portion of the leading edge; and an inboard portion configured to be directly or indirectly attached to a corresponding side portion of an adjacent intermediate half-arrow attached to a central portion of the leading edge. The back portion of the corner half arrow is configured such that: when the corner half arrow is attached to the middle half arrow, the corner half arrow fills the space between the corner portion of the leading edge and the central axis. The corner half arrow may further include a front wear portion and a side wear portion. The medial portion may be considered to extend along a medial portion axis (also referred to as a first longitudinal axis), while the back portion may be considered to extend along a first back portion axis (also referred to as a second longitudinal axis). In some examples, the second longitudinal axis may form a first angle greater than 90 degrees with respect to the first longitudinal axis.
The corner half arrow, which may also be referred to as a wear element, is configured to attach to the leading edge of the bucket lip of the bucket to provide protection to the bucket from wear when attached. Once the corner half arrow has been worn out, it can be replaced with a new corner half arrow. It should be appreciated that the present inventive concept relates to corner half arrows for more than one corner portion of the leading edge, such as both the right and left corner portions, as well as any intermediate corner portions (e.g., if the bucket lip is divided into two or more components or segments). Further, it should be appreciated that the bucket lip may form an integral part of the bucket, or may form a separate component attached to the bucket. The claimed corner half arrow configuration provides additional material at the side wear portions adjacent the back portion by extending the back portion obliquely rearward. Such a configuration allows the claimed corner half arrow to replace the corner half arrow of the prior art by: the corner half arrow of the prior art is removed, freeing up the corner or corner lip portion of the bucket, after which material is removed from the bucket lip, such as by grinding or cutting, defining a space between the corner portion of the leading edge of the lip and (the extension of) the central axis, thereby freeing up room for the extended back and side wear portions of the corner half arrow. The new corner half arrow may then be attached to the bucket lip by welding or by a connection system (not shown in the illustrated embodiment). The greater rearward extension of the corner half arrow enables prolonged use without the corner portion of the leading edge contributing to destructive wear of the bucket lip of the bucket. This in turn enables the corner half arrow to reach the life of the corner half arrow at the same time that the middle half arrow reaches the life of the middle half arrow. In prior art solutions, the corner half arrow is often worn out before the middle half arrow is worn out.
Thus, the claimed corner half arrow is advantageous in that it mitigates damage to the corner portion of the bucket lip of the bucket caused by an operator continuing to use the bucket even when the corner half arrow mill is damaged. Moreover, the claimed design of the corner half arrow provides such advantages while allowing the front geometry of the front wear portion of the corner half arrow to be unchanged so that the bucket can operate and function normally without distinction to the operator of the bucket, compared to when the corner half arrow of the prior art is used. The corner half arrow also acts as an upgrade to an existing bucket with straight left and right leading edges of the bucket lip by removing material as described above, which can be done by field workers with basic tools. Since the middle half-arrow wears the ring at about the same time as the newly designed half-arrow, fewer production interruptions are required to maintain each individual middle half-arrow or half-arrow, effectively improving the bucket availability over time.
The backside portion may extend at least initially along a first backside portion axis from the medial portion, and the backside portion may form a corner half arrow interior angle with the first medial portion axis. Similar to the corner half arrow, the middle half arrow may include a back portion configured to attach to a central portion of the leading edge of the bucket lip, wherein the back portion of the middle half arrow may extend along a second back portion axis. The side portions of the medial half arrow may extend along the second side portion axis such that the second back portion axis and the second side portion axis of the medial half arrow form a medial half arrow interior angle. Preferably, the sum of the angle inside the corner half arrow and the angle inside the middle half arrow may be greater than 180 degrees.
The edge of the back portion that may be configured to face the corner portion of the front edge may be curved. Thus, the edge of the back portion may describe a convex or concave shape as viewed from the lip of the bucket. Further, the corner half arrow may include an enclosure portion configured to at least partially enclose and protect the corner of the bucket lip.
In some examples, the first angle between the first longitudinal axis and the second longitudinal axis may be in the range of 95-120 degrees, such as in the range of 100-105 degrees, or such as 100 degrees.
According to some embodiments, the corner half arrow may further comprise a bottom support portion extending from the bottom of the corner half arrow and extending rearward from the back portion, thereby forming a shelf for receiving the leading edge of the bucket lip of the bucket.
The side wear portions may extend from the front wear portion and rearwardly from the back portion.
The side wear portion may be connected to the bottom support portion.
The central portion of the shelf may include a central recess for facing the bottom of the bucket lip.
According to a second aspect of the present disclosure, the above object is achieved by a half-arrow kit comprising the above corner half-arrow and a middle half-arrow. Thus, the corner half arrow includes: a back portion configured to attach to a corner portion of a leading edge of the bucket lip; and an inner portion configured to be directly or indirectly attached to a corresponding side portion of the middle half arrow. Further, the middle half arrow includes a back portion configured to attach to a central portion of the leading edge of the bucket lip adjacent to the corner half arrow. As discussed above in connection with the first aspect, the central portion extends along and coincides with a central axis (also referred to herein as the third longitudinal axis), thereby defining a space between the corner portion and the central axis. The back portion of the corner half arrow is configured such that: when the corner half arrow is attached to the middle half arrow, the corner half arrow fills the space between (the extension of) the corner portion of the leading edge and the central axis. The middle half arrow may further include: a front wear part; a first side portion for facing the corner half arrow; and a second side portion, opposite the corner half arrow. The side and back portions may extend perpendicular to each other such that the side portion of the middle half arrow extends perpendicular to the leading edge of the bucket lip of the bucket when attached thereto. Thus, when the corner half arrow is positioned adjacent to the middle half arrow with the inner portion of the corner half arrow extending along the first side portion of the middle half arrow, the back portion of the corner half arrow may extend obliquely rearward from the middle half arrow along the first back portion axis.
In other words, the above object is achieved by a half-arrow kit comprising a corner half-arrow for a bucket lip of a bucket and comprising a middle half-arrow for attachment to a leading edge of said bucket lip adjacent to the corner half-arrow. The corner half arrow may include: a front wear part; a side worn portion; a back portion for attachment to a leading edge of a lip of a bucket; and an inner portion for facing the middle half arrow. Furthermore, the middle half arrow may include: a front wear part; a first side portion for facing the corner half arrow; and a back portion for attachment to the bucket lip. The back portion of the middle half arrow may be considered to extend along a second back portion axis (also referred to as a fifth longitudinal axis), and the back portion of the corner half arrow may be configured to: when the corner half arrow and the middle half arrow are mounted adjacent to each other, the back portion of the corner half arrow extends obliquely rearward from the inner portion away from the fifth longitudinal axis.
The technical effect is the same for the corner half arrow discussed above, however with the additional advantage that: the kit may form a set of perfectly matched middle half-arrows and corner half-arrows. In particular, the increased rearward extension of the corner half arrow enables prolonged use without the corner portion of the bucket lip contributing to destructive wear. This enables the corner half arrow to reach the life of the corner half arrow at the same time as the middle half arrow reaches the life of the middle half arrow. In prior art solutions, the corner half arrow is often worn out before the middle half arrow is worn out. Thus, the claimed corner half arrow is advantageous in that it mitigates damage to the corner portion of the bucket lip of the bucket caused by an operator continuing to use the bucket even when the corner half arrow wears the ring. Moreover, the claimed design of the corner half arrow provides such advantages while allowing the front geometry of the front wear portion of the corner half arrow to be unchanged so that the bucket can operate and function indifferently normally to the operator of the bucket than when the corner half arrow of the prior art is used. The corner half arrow also acts as an upgrade to an existing bucket with straight left and right leading edges of the bucket lip by removing material as described above, which can be done by field workers with basic tools. Since the intermediate half arrow is worn out at about the same time as the newly designed half arrow, fewer production interruptions are required to service each individual intermediate half arrow or half arrow, effectively improving the usability of the bucket over time.
The front wear portion of the middle half arrow of the second set may extend parallel to the back portion of the middle half arrow.
According to a third aspect of the present disclosure, the above object is achieved by a system comprising a bucket and a corner half arrow according to the first aspect or a half arrow kit according to the second aspect. The bucket lip includes a leading edge having a central lip portion extending along a central axis (also referred to as a third longitudinal axis) and a corner portion (also referred to as a corner lip portion) extending along a corner axis (also referred to as a fourth longitudinal axis), wherein the corner axis extends at a second angle offset from the central axis, wherein the corner angle (also referred to as a second angle) is configured such that: when the corner half arrow is attached to the lip of the bucket, the back portion of the corner half arrow is aligned with the corner portion of the leading edge.
Drawings
FIG. 1 shows a bucket lip having a bucket with a GET in the form of a half arrow attached along a front portion or leading edge of the bucket lip to protect the bucket lip.
Fig. 2 shows an exploded view of the bucket lip of fig. 1 from above, including an angled/retracted right-hand corner portion of the leading edge of the bucket lip. The left hand corner portion of the leading edge has not been cut away of material to match the left hand corner half arrow.
Fig. 3 to 4 show right-hand half arrows which are also shown in fig. 1 to 2.
Fig. 5 shows a right-hand half arrow and an adjacent middle half arrow of the prior art, and a portion of a lip of a bucket shown in phantom.
Fig. 6 shows a second embodiment of a right hand half arrow according to the present disclosure, as well as an adjacent middle half arrow and a portion of a lip of a bucket shown in dashed-dotted lines.
Fig. 7 illustrates a corner half arrow according to one embodiment when attached to a middle half arrow.
Fig. 8 a-8 c illustrate corner half arrows according to some embodiments.
Reference numeral table
Detailed Description
The corner half arrow of the lip of the bucket for an earth-moving machine will be described below with reference to the accompanying drawings.
Fig. 1 shows a bucket lip 3 for a bucket comprising a GET in the form of a half arrow attached along the leading edge 2 or front portion of the bucket lip 3 to protect the bucket lip 3. Half arrows 1, 8 collectively present a front wear portion and respective left and right wear portions to protect bucket lip 3. The typical shape of the leading edge 2 is along a straight line extending straight from left to right, or has a central portion 11 or central lip portion 11, and a retracted or cut-out corner portion 13 or corner lip portion 13. The central portion 11 may be considered to extend along and coincide with a central axis 12 (hereinafter also referred to as a third longitudinal axis 12), while the corner portions 13 may be considered to be retracted relative to the central axis 12, defining a space between the corner portions 13 and the central axis 12. Thus, the leading edge 2 of the bucket lip 3 may be described by a straight front portion and a straight right front portion angled relative to each other as depicted in FIG. 2. As also shown in fig. 2, the right front portion has been cut away at an angle relative to its original straight shape (as compared to the left front portion in fig. 2 having its original straight shape prior to cutting away), thereby exhibiting the above-described spacing from the central axis 12. The space may be formed as a triangular space that was not previously available. The same procedure can be performed for the straight left front portion of the leading edge shown in fig. 2 to remove material obliquely outward-rearward, before attaching the left-hand corner half arrow 1 to the bucket lip. The side portions of the middle half arrow of the prior art extend generally perpendicular to the leading edge 2 to which they are attached. A middle half arrow with such a prior art design is shown in fig. 2.
In fig. 1 to 2 a first embodiment of a new corner half arrow 1 is shown. The corner half arrow 1 includes: a front wearing portion 4; a side worn portion 5; a back portion 6 for attachment to the lip 3 of the bucket 21; and an inner portion 7 for facing an adjacent intermediate half arrow 8. The inner portion 7 extends along a first longitudinal axis 9 (also referred to as a first inner portion axis) and the back portion 6 extends along a second longitudinal axis 10 (also referred to as a first back portion axis). The second longitudinal axis 10 forms a first angle 17 exceeding 90 degrees with respect to the first longitudinal axis 9. The first angle 17 may also be referred to as a corner half arrow internal angle 17.
When such a corner half arrow 1 is attached to the leading edge 2 of the lip 3 of the bucket 21 and the inner portion 7 of the corner half arrow 1 is positioned adjacent to the corresponding side portion of the middle half arrow 9, the back portion of the corner half arrow 1 extends further rearward than the corner half arrow of the prior art, thus providing additional wear material on the corner half arrow 1, whereby the corner half arrow 1 wears out later, preferably about the same time as the middle half arrow 8. This enables the operator of the bucket 21 to keep operating the bucket 21 until all or at least a substantial part of the half-arrow is worn out without damaging the corner portion of the leading edge 2 of the lip 3 of the bucket 21.
In this embodiment, the first angle 17 is 100 degrees, but in other embodiments it may be selected as appropriate in other ways, such as in the range of 95-120 degrees or in the range of 100-105 degrees.
The corner half arrow 1 further comprises a bottom support portion 15, which bottom support portion 15 extends from the bottom of the corner half arrow 1 and extends back from the back portion 6, thereby forming a shelf for receiving the lip 3 of the bucket 21. The bottom support portion 15 enables a larger area of engagement between the bucket lip 3 and the corner half arrow 1, thus reducing the stress of the connection between the corner half arrow 1 and the bucket 21 and improving the robustness of the connection.
The side wear portion 5 extends from the front wear portion 4 and rearwardly from the back portion 6, which back portion 6 extends along the leading edge 2 of the bucket lip 3. In other embodiments, the side wear portions 5 may alternatively extend only to the back portion 6. Furthermore, the side wear part 5 is connected to the bottom support part 15. In this embodiment the corner half arrow 1 is moulded in one piece, comprising the connection between the bottom support portion 15 and the side wear portion 5, but any other suitable manufacturing method may be used instead.
Also, as shown in fig. 3 and 4, the central portion of the shelf includes a central recess for facing the bottom of the bucket lip 3. Once the front wear portion is worn out, the central recess is visible, thus providing a visual indicator of wear. In other embodiments, the central recess may alternatively have other shapes or be omitted.
See fig. 5-6 for a comparison of the prior art corner half arrow with the corner half arrow 1 according to the second embodiment of the present disclosure, wherein the bucket lip is shown in dash-dot lines. As shown, the corner half arrow is provided with a back portion configured to compensate for material that has been removed from the leading edge 2 of the bucket lip 3 by wear or cutting, thus defining an angle 18 relative to the central axis 12.
Fig. 7 illustrates a corner half arrow 1, which corner half arrow 1 may similarly be configured as the corner half arrow discussed above in connection with, for example, fig. 1-4. Thus, the medial portion of the corner half arrow 1 may extend along a first medial portion axis 9 and form a corner half arrow interior angle 17 with respect to a first back portion axis 10. The corner half arrow 1 may be configured such that when attached to a corner of the leading edge 2 of the bucket lip 3, the first inboard portion axis 9 may be aligned with the second side portion axis 20, with the corresponding side portion of the middle half arrow 8 extending along the second side portion axis 20. Thus, the corresponding side portions of the middle half arrow 8 may be arranged adjacent to and facing the inner side portions of the corner half arrow 1.
The middle half arrow 8 may have a back portion attached to a central portion of the leading edge 2 and extending along a second back portion axis 16, which second back portion axis 16 may form a middle half arrow interior angle 19 with respect to a second side portion axis 20.
As illustrated in fig. 7, the middle half arrow interior angle 19 and the corner half arrow interior angle 17 may together form a sum of more than 180 degrees.
Fig. 8a to 8c illustrate different examples of the shape of the back portion 6 of the corner half arrow 1. In the presented figures, the back portion 6 is attached to a corner portion of the leading edge 2 of the lip 3 of the bucket 21. The illustrated corner half arrow 1 may form part of a kit comprising a plurality of corner half arrows having various shapes, from which corner half arrows may be selected to match the corresponding shape of the corner portion of the leading edge 2. Alternatively or additionally, the corner portions may be shaped, for example by cutting, into a shape that can mate with the back portion 6 of the corner half arrow 1.
The back portion 6 may be shaped to at least partially enclose the corners of the corner portions, thereby protecting the corner portions from wear. The enclosing part 22 of the back part 6 can further be used to improve the attachment to the lip 3 of the bucket 21.
Fig. 8a and 8b illustrate examples in which the back section 6 extends at least initially along a first back section axis 10, which first back section axis 10 intersects the central axis of the leading edge 2 of the bucket lip 3 as seen from the inner side. In fig. 8a, the back portion 6 of the corner half arrow 1 follows two different axes-a first being a first back portion axis 10, then another axis intersecting the first back portion axis 10. In fig. 8b, the back part 6 instead describes a curve extending into the bucket lip.
Fig. 8c illustrates a further example in which the edge of the back portion 6 is concavely curved into the corner half arrow 1, following the rounded contour of the corner portion of the leading edge 2.
As mentioned above, the corner half arrow 1 may be provided as part of a kit comprising both the corner half arrow 1 described above and the intermediate half arrow 8 cited above. The middle half arrow 8 may include: a front wear part; a first side portion for facing the corner half arrow 1; a second side portion, back-diagonal half arrow 1; and a back portion for attachment to the front edge 2 of the lip 3 of the bucket 21, wherein the side and back portions extend perpendicular to each other as shown in fig. 2.
In other words, the half-arrow kit comprises a corner half-arrow 1 for the leading edge 2 of the bucket lip 3 and comprises a middle half-arrow for attaching to said leading edge 2 adjacent to the corner half-arrow 1, wherein the corner half-arrow 1 comprises: a front wearing portion 4; a side worn portion 5; a back portion 6 for attachment to the leading edge 2 of the bucket lip 3; and an inner portion 7 for facing the middle half arrow 8. The middle half arrow 8 includes: a front wear part; a first side portion for facing the corner half arrow 1; and a back portion for attachment to the leading edge 2 of the bucket lip 3. The back portion of the middle half arrow 8 extends along a fifth longitudinal axis 16 (also referred to as a second back portion axis), and the back portion 6 of the corner half arrow is configured to: when the corner half arrow 1 and the middle half arrow 8 are mounted adjacent to each other, the back portion 6 extends obliquely rearward from the inner portion 7 away from the fifth longitudinal axis 16. The front wearing portion of the middle half arrow 8 extends parallel to the back portion of the middle half arrow 8, but may alternatively extend obliquely with respect to the back portion of the middle half arrow 8 in other embodiments.
Moreover, the corner half arrow or the kit may be provided with a bucket lip and/or a bucket, thereby forming a system for attachment to an earth-moving machine. The lip 3 of the bucket comprises a leading edge 2, which leading edge 2 has a central portion 11 (shown in dashed lines in fig. 2) extending along a third longitudinal axis 12 and a corner portion 13 (shown in dashed lines in fig. 2) extending along a fourth longitudinal axis 14 (also called corner axis). The fourth longitudinal axis 14 extends at a second angle 18 offset from the third longitudinal axis 12. The second angle 18 is configured such that: when the corner half arrow 1 is attached to the leading edge 2 of the lip 3 of the bucket 21, the back portion 6 of the corner half arrow 1 is aligned with the corner portion 13.
It should be understood that the various edges or portions defined as extending along the respective longitudinal axes are generally straight portions/edges, but alternatively, in other embodiments, they may be arcuate, wavy or otherwise shaped so long as they still extend generally along the respective longitudinal axes to which reference is made.
The half arrows described herein are designed to be attached to the bucket lip 2 by welding, but alternatively they may be redesigned to be attached to the bucket (not shown) by a mechanical connection system that releasably holds the GET.
It should be further appreciated that while the embodiments discussed above with reference to fig. 1-8 c relate to right-hand corner half arrows, the inventive concepts should not be construed as being limited to a particular corner of the bucket lip. Instead, the proposed inventive concept can also be applied to the left-hand half arrow.
Claims (14)
1. A corner half arrow (1) configured for attachment to a leading edge (2) of a lip (3) of a bucket (21), wherein the leading edge comprises a central portion (11) extending along and coinciding with a central axis (12) and a corner portion (13) retracted from the central axis (12), whereby the corner portion (13) and the central axis (12) define a space therebetween,
wherein the corner half arrow (1) comprises:
-a back portion (6) configured to be attached to the corner portion (13); and
an inner portion (7) configured to be directly or indirectly attached to a corresponding side portion of an adjacent intermediate half-arrow (8) attached to the central portion (11),
characterized in that the back portion (6) is configured such that: when the corner half arrow (1) is attached to the middle half arrow (8), the corner half arrow (1) fills the space between the corner portion (13) and the central axis (12).
2. The corner half arrow (1) according to claim 1, wherein:
said inner portion (7) extending along a first inner portion axis (9),
the back portion (6) extends from the inner portion (7) at least initially along a first back portion axis (10),
said first inner side portion axis (9) and said first back portion axis (10) forming a corner half arrow inner angle (17),
the middle half-arrow (8) comprises a back portion configured to be attached to the central portion (11),
said back portion of said middle half arrow (8) extending along a second back portion axis (16),
said side portion of said middle half arrow (8) extending along a second side portion axis (20),
the second back portion axis (16) and the second side portion axis (20) of the intermediate half arrow (8) form an intermediate half arrow interior angle (19), and
the sum of the corner half arrow interior angle (17) and the intermediate half arrow interior angle (19) exceeds 180 degrees.
3. Corner half arrow (1) according to claim 1, wherein the edge of the back portion (6) configured to be arranged facing the corner portion (13) is curved.
4. A corner half arrow (1) according to claim 3, further comprising an enclosing member (22), the enclosing member (22) being configured to enclose a corner of the corner portion (13).
5. The corner half arrow (1) according to claim 2, wherein the corner half arrow internal angle (17) is in the range of 95-120 degrees, such as in the range of 100-105 degrees, or such as 100 degrees.
6. The corner half arrow (1) according to any of the preceding claims, further comprising a bottom support portion (15), the bottom support portion (15) extending from the bottom of the corner half arrow (1) and extending rearwardly from the back portion (6), thereby forming a shelf for receiving the lip (3) of the bucket (21).
7. The corner half arrow (1) according to claim 6, further comprising a side wear portion (5) and a front wear portion (4), wherein the side wear portion extends from the front wear portion and rearwardly from the back portion (6).
8. Corner half arrow (1) according to claim 7, wherein the side wearing part (5) is connected to the bottom supporting part (15).
9. Corner half arrow (1) according to any of claims 6 to 8, wherein the central portion of the shelf comprises a central recess for facing the bottom of the bucket lip (2).
10. A half-arrow kit configured to be attached to a leading edge (2) of a lip (3) of a bucket (21), the kit comprising:
-a corner half arrow (1) configured to be attached to a corner portion (13) of the leading edge; and
a middle half-arrow (8) configured to be attached to a central portion (11) of the leading edge, adjacent to the corner half-arrow (1),
wherein the central portion (11) extends along and coincides with a central axis (12) and the corner portion (13) is retracted from the central axis (12), thereby defining a space between the corner portion (13) and the central axis (12),
wherein the corner half-arrow (1) comprises a back portion (6) configured to be attached to the corner portion (13) and an inner portion (7) configured to be directly or indirectly attached to a corresponding side portion of the middle half-arrow (8),
wherein the middle half-arrow (8) further comprises a back portion configured to be attached to the central portion,
wherein the back portion (6) of the corner half arrow (1) is configured such that: when the corner half arrow (1) is attached to the middle half arrow (8), the corner half arrow (1) fills the space between the corner portion (13) and the central axis (12).
11. The half arrow kit of claim 10, wherein:
said inner portion (7) of said corner half arrow extending along a first inner portion axis (9),
the back portion (6) of the corner half arrow extends from the inner portion at least initially along a first back portion axis (10),
said first inner side portion axis (9) and said first back portion axis (10) forming a corner half arrow inner angle (17),
said back portion of said middle half arrow (8) extending along a second back portion axis (16),
the first side portion of the intermediate half arrow (8) extends along a second side portion axis (20),
the second back section axis (16) and the second side section axis (20) form a middle half-arrow internal angle (19), and
the sum of the angle inside the corner half arrow and the angle inside the middle half arrow is greater than 180 degrees.
12. Half-arrow kit according to claim 10 or 11, wherein the edge of the back portion (6) configured to be arranged facing the corner portion (13) is curved.
13. The half-arrow kit according to any one of claims 10 to 12, wherein the intermediate half-arrow (8) further comprises a front wearing portion extending parallel to the back portion of the intermediate half-arrow (8).
14. A system comprising a bucket (3) and a corner half arrow (1) according to any one of claims 1 to 8 or comprising a half arrow kit according to any one of claims 9 to 12, wherein the leading edge (2) of the bucket lip (3) of the bucket (21) comprises a central portion (11) extending along a central axis (12) and a corner portion (13) extending along a corner axis (14), wherein the corner axis (14) extends at a corner angle (18) offset relative to the central axis (12), wherein the corner angle (18) is configured such that: when the corner half arrow (1) is attached to the bucket lip (3) of the bucket (21), the back portion of the corner half arrow (1) is aligned with the corner portion (13).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20215738.4A EP4015710A1 (en) | 2020-12-18 | 2020-12-18 | Corner half arrow for a bucket |
| EP20215738.4 | 2020-12-18 | ||
| PCT/AU2021/051516 WO2022126201A1 (en) | 2020-12-18 | 2021-12-17 | Corner half arrow for a bucket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117120691A true CN117120691A (en) | 2023-11-24 |
Family
ID=73855956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180085657.0A Pending CN117120691A (en) | 2020-12-18 | 2021-12-17 | Corner half arrow for bucket |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4015710A1 (en) |
| CN (1) | CN117120691A (en) |
| AU (1) | AU2021404413A1 (en) |
| CA (1) | CA3202662A1 (en) |
| WO (1) | WO2022126201A1 (en) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3029534A (en) | 1960-05-23 | 1962-04-17 | Rakisits Michael | Bulldozer moldboard corner bit |
| DE1952397U (en) | 1966-09-01 | 1966-12-22 | Guenter Lehnhoff | CORNER REINFORCEMENT DEVICE FOR SHOVEL KNIFE. |
| GB1333480A (en) * | 1971-12-20 | 1973-10-10 | Caterpillar Tractor Co | Router bit for scraper bowl |
| JPS5469601U (en) * | 1978-07-25 | 1979-05-17 | ||
| US5016365A (en) * | 1989-06-06 | 1991-05-21 | Gh Hensley Industries, Inc. | Wear parts for excavation apparatus |
| JP3479489B2 (en) * | 2000-03-09 | 2003-12-15 | 越後商事株式会社 | Blade body attached to bucket body of excavating machine |
| US7266914B2 (en) * | 2001-10-09 | 2007-09-11 | Peninsula Alloy Inc. | Wear plate assembly |
| US20070212207A1 (en) * | 2006-03-10 | 2007-09-13 | Deere & Company | Bolt-on spill guard for buckets |
| US7510365B2 (en) * | 2006-04-14 | 2009-03-31 | Babiarz Stacey A | Bulk materials bagger and method |
| SE532593C2 (en) * | 2006-05-05 | 2010-03-02 | Atlas Copco Rock Drills Ab | Device in detail for a mining or construction vehicle, comprising a wear protection structure |
| SE533207C2 (en) * | 2007-12-21 | 2010-07-20 | Atlas Copco Rock Drills Ab | Wear part for a bucket for a loading or excavator, mounting unit there for as well as wear part system, bucket and loading or excavator |
| EP2893089A2 (en) * | 2012-09-04 | 2015-07-15 | Sandvik Intellectual Property AB | Bucket corner, ground engaging tool and mutual mechanical attachment thereof |
| ES2900338T3 (en) * | 2015-02-13 | 2022-03-16 | Black Cat Wear Parts Ltd | Wear parts for excavation implements |
-
2020
- 2020-12-18 EP EP20215738.4A patent/EP4015710A1/en active Pending
-
2021
- 2021-12-17 WO PCT/AU2021/051516 patent/WO2022126201A1/en active Application Filing
- 2021-12-17 CN CN202180085657.0A patent/CN117120691A/en active Pending
- 2021-12-17 CA CA3202662A patent/CA3202662A1/en active Pending
- 2021-12-17 AU AU2021404413A patent/AU2021404413A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022126201A1 (en) | 2022-06-23 |
| AU2021404413A1 (en) | 2023-07-13 |
| CA3202662A1 (en) | 2022-06-23 |
| AU2021404413A9 (en) | 2024-02-08 |
| EP4015710A1 (en) | 2022-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6231339B2 (en) | Civil engineering bucket wing shroud, bucket, and civil engineering machinery | |
| US6230424B1 (en) | Base edge protection assembly for an implement of a work machine | |
| US6766602B2 (en) | Corner tooth adapter arrangement for an excavating implement | |
| US8959806B2 (en) | Rolled steel lip for an excavator bucket | |
| CN114753434B (en) | Implement ground engaging tip assembly having tip with tapered retention channel | |
| US6434865B2 (en) | Base edge protection assembly for an implement of a work machine | |
| RU2664986C2 (en) | Ground engaging tool assembly | |
| JP2022519206A (en) | Wear assembly for earthwork equipment | |
| CN204781076U (en) | A wearing and tearing subassembly for having bucket of lateral wall | |
| CN104080982A (en) | Wear pad assembly | |
| CN117120691A (en) | Corner half arrow for bucket | |
| US11808016B2 (en) | Bucket lip for earth moving machines | |
| CN117043424A (en) | Fixing system for fixing a wear element in a support element of an earthmoving machine by means of a pin and a retainer | |
| US11725362B2 (en) | Cutting edge geometry | |
| JP2872583B2 (en) | Storage structure of seal ring | |
| WO2021014164A1 (en) | Excavation apparatus and method of manufacture and use thereof | |
| US10724211B2 (en) | Wearing-part system | |
| US20220372735A1 (en) | Cast top cover for base edge wear protection | |
| US20220389690A1 (en) | Corner guard for a work implement assembly | |
| US20150033593A1 (en) | Adapter with concealment portion at bucket tip end and bucket mounted on working machine for excavation and the like | |
| US20230175237A1 (en) | Change system for wear parts of an excavator bucket of an earthmoving machine | |
| US10190291B2 (en) | Modular sidebar protecting wear member and system | |
| JP2002054171A (en) | Working attachment for construction machinery | |
| JPH09144071A (en) | Excavation tooth and bucket equipped therewith | |
| JP2006045769A (en) | Excavation bucket |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |