• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    EXCAVATOR BUCKET AND EARTHWORKING MACHINE. The present invention relates to an excavator bucket for an earthmoving machine, comprising an interior bucket space formed by a curved rear wall and a pair of opposing side walls, wherein the bucket comprises a bucket arranged in a wall. rear, in particular, arranged on the outer surface of the top, and extending along the side axis of the bucket, where the angle between at least one of the outside side sides of the bucket box and the rear wall of the bucket, in particular , the top, is less than 90 degrees.
    公开号:BR102014004424B1
    申请号:R102014004424-8
    申请日:2014-02-25
    公开日:2021-08-31
    发明作者:Martial Vicq；Gérard Weber；Brice Caux；Oliver Weiss
    申请人:Liebherr-Mining Equipment Colmar Sas；
    IPC主号:
    专利说明:

    [001] The present invention relates to an excavator bucket for an earthmoving machine comprising an interior bucket space formed by a curved rear wall and a pair of opposite side walls. Furthermore, the invention relates to an earthmoving machine comprising an excavator bucket.
    [002] Excavator buckets are used as accessory equipment for earthmoving machines. Today, a variety of buckets configured for different applications are available on the market. The bucket shape generally resides in kinematic hydraulic excavators. Current excavator bucket developments and improvements are regularly directed towards increasing daily production in terms of the amount of material moved or reducing wear on the bucket material. However, developments regarding the bucket volume/weight ratio have not been promoted as necessary in the past.
    [003] Therefore, it is the aim of the present invention to provide a solution for an excavator bucket that increases the volume/weight ratio.
    [004] The aforementioned objective is solved by an excavator bucket according to the characteristic combination of claim 1. The preferred embodiments of the present invention are the subject of the dependent claims.
    [005] The present invention provides an excavator bucket for an earthmoving machine, in particular a mining machine, which comprises an interior bucket space for capturing the material to be moved. The interior bucket space is formed by a curved rear wall and a pair of opposing side walls.
    [006] The bucket according to the present invention is constructed in a box-like manner. A bucket box is arranged on top of the bucket surface in a bucket area that comprises fastening means for securing the bucket to an excavator arm.
    [007] The bucket box is arranged on the rear wall, in particular arranged on the outer surface of the top. Also, the bucket extends along a lateral bucket axis. According to the present invention, the bucket weight, in particular the used bucket weight, is reduced if the angle between at least a front wall bucket box and a bucket rear wall, in particular at the top, by less than 90 degrees. Consequently, the resulting bucket comprises two front sides, or conversely, outer side sides that are inclined to a vertical axis. The total material for making the bucket is significantly reduced, although the resulting bucket volume is constant.
    [008] According to a preferred aspect of the present invention, the ratio of bucket volume to weight can be increased by building the bucket with an angle between at least one sidewall and the curved rear wall greater than 90 degrees. Now the bucket capacity can be appreciably increased. Still, only a very low weight gain needs to be accepted. With a given bucket edge width, the bucket width can be increased to the level of the sidewall so that the bucket volume increases.
    [009] The angle between at least one sidewall and a rear wall is not necessarily constant over the complete contact zone. It may be sufficient if some parts of the contact zone of the side wall and the back wall draw an angle greater than 90 degrees.
    [0010] In a preferred aspect of the present invention, the curved back wall is separated into an upper and a lower part, wherein the side walls are located between the upper and lower part. According to the preferred aspect, the angle between at least one side wall and the top and/or the bottom is greater than 90 degrees. The angle between at least one sidewall and the top and/or bottom is not necessarily constant throughout the contact zone. However, best performance is achieved with an angle between the top and the sidewall, and with an angle between the bottom and at least one sidewall that are both greater than 90 degrees.
    [0011] The best volume for unit weight is achieved when both side walls are connected to a rear wall at an angle of more than 90 degrees.
    [0012] It is possible to optimize the shape of the bucket box even to reduce the total weight of the bucket, in particular the bucket weight. Good optimization is achieved by obtaining the bucket box as a hollow box in which the longitudinal axis of the bucket box extends along the lateral axis of the bucket.
    [0013] In particular, a bucket box comprising a four-cornered cross section zone with rounded corners. Such a cross shape will show good properties regarding its own weight. Ideally, the four corner cross section zone has rounded corners where the sides of the cross section zone differ from each other in their length and/or orientation. Weight optimization likewise resists stresses generated by working digging forces. Considering the preferred modifications mentioned above to the bucket, a clear 30% weight reduction compared to the weight of known boxes is possible. Both lateral outer sides can be slanted to a vertical axis, for example slanted to each other.
    [0014] In a still preferred embodiment, the rear wall consists of at least two metal sheets that are brought together during bucket fabrication to have a curved or round shape of the rear wall. These metal sheets are not pressed or molded. Instead, it is practical when at least two sheet metals are actually laminated, cut and welded together. The bucket volume can now be significantly increased without noticeably increasing the total bucket weight.
    [0015] In a preferred embodiment, the upper portion of the rear wall at least partially forms a circular shape. Anterior backwall shapes may be rounded, but usually include a straight portion forming the top surface of the bucket. According to a preferred embodiment of the invention this portion is replaced by an upper portion which forms at least partially a circular shape. The circular shape increases the available bucket volume.
    [0016] For an improvement in the life of the bucket, it is very common to use wear packs. These wear packs are most often plates with a higher hardness that are welded to the bucket frame. According to a preferred embodiment of the invention, on the contrary, a carbide coating is arranged at least partially on the at least one structural part of the defined bucket which is subjected to intense stress.
    [0017] It is most preferable when the mentioned carbide coating is laid directly on the structural part after the bucket material cutting process and before a welding and forming process. The coating is carried out using a mechanical process.
    [0018] Ideally, the carbide coating used includes tungsten carbides that are very hard and can withstand the entire life of the bucket. Therefore, it is possible to reduce the total bucket weight as loading is done directly on the bucket frame.
    [0019] In an advantageous aspect of the present invention, the bucket comprises at least one attachment flange for securing the bucket to an excavator arm of an earth moving machine. It is possible for the bucket to comprise at least two flanges, each having one or more openings for detachably connecting the bucket to an excavator arm of an earthmoving machine.
    [0020] It may be possible that at least one fixed flange is connected to a bucket and/or to the rear wall, in particular to the top.
    [0021] The invention is further directed to an earthmoving machine comprising a bucket according to the present invention or according to any of the preferred embodiments of the present invention. The earthmoving machine may have hydraulic means for operating the fixed bucket.
    [0022] Obviously, the advantages and properties of the earthmoving machine correspond to those of the invention of the bucket. Therefore, a repetitive description of the earthmoving machine is considered unnecessary.
    [0023] Furthermore, properties and characteristics of the present invention should be explained below with respect to the modality shown in the figures. In detail, it is shown in:
    [0024] Figure 1 - a perspective side view of an excavator bucket according to the invention,
    [0025] Figure 2 - a front view of the bucket according to Figure 1,
    [0026] Figure 3 - a perspective view of the bucket according to Figure 1 below,
    [0027] Figure 4 - a side view of the inventive bucket,
    [0028] Figure 5 - a detailed view of the bucket,
    [0029] Figure 6 - two front views of the inventive bucket and
    [0030] Figure 7 - schematic views of the structural parts of the bucket.
    [0031] Figures 1 to 4 and 6 show different views of the excavator bucket 10 according to the invention. The excavator bucket 10 comprises four fixed flanges 20 arranged to connect the excavator bucket 10 to an excavator, in particular a mining excavator.
    [0032] A respective excavating machine, which is not shown in the Figures, comprises a movable arm configured to receive the openings 21 of the fixed flanges 20. The movable arm is generally activated by hydraulic means so that the material to be moved can be captured with the inventive bucket.
    [0033] The bucket shown in the figures has a rear wall 30, which is separated into a lower part 31 and an upper part 33. A pair of opposite side walls 40 is located between the lower part 31 and the upper part 33. walls together have an edge defining the opening to the interior bucket space. The end of the side walls 40 is marked with a reference sign 41 wherein the end of the lower part 31 of the rear wall 30 is called a bucket lip which is marked with a reference sign 34.
    [0034] In addition, six excavator tines are arranged on the bucket lip 34 to optimize the earthmoving machine's catching process. Two curved adapters 50 are located at the point of intersection between lip 34 and sidewalls 40.
    [0035] Another four excavator tines 51 are arranged between curved adapters 50 along with bucket lip 34. Excavator tine 52 of different type and size can be connected to the bucket detachably by sliding compatible tooth adapters 50, 51.
    [0036] The present invention recommends optimizing the ratio between bucket volume and bucket weight for at least one of the following implementations.
    [0037] First, the angle α (Figure 2) between the side walls 40 and the bottom 31 of the rear wall 30 is raised to expand the available bucket volume. The angle must have a value greater than 90 degrees.
    [0038] With an angle α greater than 90 degrees, the bucket capacity can be expanded without a noticeable increase in the total bucket weight. With a given edge width, the bucket width can be increased to the level of the sidewall so that the bucket volume is increased. upper surface of the bucket 10, in particular the top surface of the top portion 33 of the rear wall 30. A detailed illustration of the bucket housing is given in figure 5.
    [0039] The longitudinal axis A of the bucket box extends along the lateral direction of the bucket 10. The cross-sectional area 71 of the bucket box 70 along its intersecting lateral axis BB shows four rounded corners connected on four sides which differ from each other in their length and lateral orientation. The body of the 70 bucket box is hollow. A circular opening 73 is disposed in the middle of the top portion of the bucket 70.
    [0040] The front sides 72 of the bucket box 70 are angled so that the top edge 74 of the bucket box 70 is shortened compared to the remaining box edges along the longitudinal axis A. In detail, the front sides 72 of the bucket box 70 and the top portion 33 of the rear wall 30 trace an angle β (figures 2, 6) which is less than 90 degrees. Therefore, a reduction in the weight of the bucket box can be achieved where the volume of the bucket box remains constant. The outer side sides 72 of the bucket 70 are covered by the sloping portions 42 of the bucket side walls 40. Both portions 42 include an opening to the interior of the bucket 70.
    [0041] The rear wall 30 of the bucket 10 consists of two metal sheets 36, 37 which are welded together to have a curved or round shape of the rear part 30. As can be seen from the drawing in Figure 6, the two metal sheets 36, 37 are arranged together with the 38 weld angled to each other. Each of the two sheet metals forms an angle μ against the straight line B crossing the weld 38. The inclination against the straight line B of each sheet metal 36, 37 further leads to a reduction in the weight of the total bucket weight. In addition, the wear on the rear wall of the bucket 30 can be significantly reduced.
    [0042] Sheet metals are not pressed or molded. They are laminated, cut and welded together. The solder 38 as shown in Figure 3 connects the two metal sheets 36, 37 together. In addition, the side views of Figures 3 and 4 highlight the circular shape resulting from the back wall of the bucket, which produces an additional volume to the weight ratio of the bucket 10.
    [0043] In detail, each sheet metal 36, 37 of the rear wall, the rear wall portions are arranged inclined to each other, at angle Y.
    [0044] Rather than using known wear packs, the present invention focuses on carbide linings that are disposed directly on some structural parts of the bucket 10. Figure 7 shows different structural parts of the bucket 10. On the left side, the inner surface of the back wall 30 is shown, where the edge area 80 constitutes the loading surface comprising the carbide coating. The structural part in the middle of Figure 7 reveals a portion of the bucket close to the bucket edge 34 where the structural part revealed on the right side is a first wall 40 of the bucket 10. Both structural parts show fenced areas 80 that make up the shell lining. carbide to increase the hardness and strength of the bucket material. The carbide coating on the structural parts is laid out after the cutting process during the manufacture of bucket 10 and before forming and welding bucket 10. The coating is further achievable with a mechanical process.
    [0045] The carbides used comprise tungsten, which has suitable properties to increase the rigidity and strength of the bucket 10 during the life of the full bucket. This allows for a reduction in overall weight as refilling is done directly to the bucket frame.
    权利要求:
    Claims (15)
    [0001]
    1. Excavator bucket for an earth-moving machine, in particular a mining excavator, comprising an interior bucket space formed by a curved rear wall and a pair of opposing side walls, each side wall including a sloping part and a non-sloping part. sloped, in which the curved rear wall includes an upper and a lower part, characterized in that the bucket comprises a bucket box disposed on an outer surface of the upper portion of the rear wall, and which extends along an axis. side of the bucket and including a pair of side sides covered by the sloping portions of the side walls, where an angle between at least one of the sloping portions of the side walls and the top of the rear wall of the bucket is less than 90 degrees, and where an angle between at least one of the unangled portions of the side walls and a front end of the lower portion of the rear wall is greater than 90 degrees.
    [0002]
    2. Excavator bucket according to claim 1, characterized in that the angle between the non-tilted part of at least one side wall and the top of the rear wall is greater than 90 degrees, and in that the front end of the part Bottom of the rear wall is a bucket lip to which a plurality of bucket teeth are attached.
    [0003]
    3. Excavator bucket according to claim 1, characterized in that the bucket box is hollow and includes a four-sided cross-sectional zone with rounded curves in which the sides of the cross-sectional zone differ from each other in their length and its orientation.
    [0004]
    4. Excavator bucket according to claim 1, characterized in that the rear wall includes two metal sheets connected in a weld line, the weld line extending in the longitudinal direction of the rear wall to form a curved rear wall /round, and where the sheet metal is slanted relative to one another and each sheet metal forms a Y angle with a straight line that crosses the weld line.
    [0005]
    5. Excavator bucket according to claim 4, characterized in that at least two metal sheets are laminated, with a welded joint between them.
    [0006]
    6. Excavator bucket according to claim 1, characterized in that the carbide coating is arranged at least partially on one or more structural parts of the bucket.
    [0007]
    7. Excavator bucket according to claim 6, characterized in that the carbide coating includes tungsten.
    [0008]
    8. Excavator bucket according to claim 7 or 7, characterized in that the carbide coating is disposed on one or more structural parts of the bucket after a cutting process and before a process of forming and welding the bucket.
    [0009]
    9. Excavator bucket according to claims 7 to 6, characterized in that the coating is carried out by a mechanical process.
    [0010]
    10. Excavator bucket according to claim 1, characterized in that the upper part of the rear wall forms at least partially a circular shape.
    [0011]
    11. Excavator bucket according to claim 1, characterized in that the bucket comprises at least one attachment flange for securing the bucket to an excavator arm of the earthmoving machine.
    [0012]
    12. Excavator bucket according to claim 11, characterized in that at least one attachment flange is connected to the bucket box and/or the rear wall.
    [0013]
    13. Excavator bucket according to claim 11, characterized in that at least one attachment flange is connected to an upper part of the bucket box.
    [0014]
    14. Excavator bucket according to claim 12, characterized in that at least one fastening flange comprises at least two openings as fitting means for a suitable connecting mechanism of an excavator arm.
    [0015]
    15. Earthmoving machine, in particular, a mining excavator, characterized in that it comprises an excavator bucket, as defined in claim 1.
    类似技术:
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    同族专利:
    公开号 | 公开日
    EP2770114A1|2014-08-27|
    AU2014200969A1|2014-09-11|
    CN104005436B|2018-11-02|
    CA2842770A1|2014-08-25|
    CA2842770C|2021-02-09|
    CN104005436A|2014-08-27|
    US20140237869A1|2014-08-28|
    ZA201401431B|2015-08-26|
    AU2014200969B2|2017-09-14|
    BR102014004424A2|2014-11-04|
    US9670643B2|2017-06-06|
    JP2014163220A|2014-09-08|
    RU2646260C2|2018-03-02|
    RU2014106873A|2015-08-27|
    JP6316617B2|2018-04-25|
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    法律状态:
    2014-11-04| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|
    2018-11-13| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-03-24| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-06-15| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-08-31| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 25/02/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP13000949.1|2013-02-25|
    EP13000949.1A|EP2770114A1|2013-02-25|2013-02-25|Excavator bucket and earth moving machine|
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