• 专利附录
  • 专利说明
  • 权利要求
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    • 专利摘要:
    CONNECTING SYSTEM FOR AN EXCAVATOR AND EXCAVATOR TOOTH An excavator attachment system can include a tooth having a cavity formed in it, an insert received in a recess formed in an adapter nozzle and a threaded fastener that reliably holds the tooth at the nozzle, the fastener having a helical thread formed therein which is eccentric in relation to a fastener body. A tooth may include a cavity with at least one side wall that has an insert receiving recess and generally engaging insert interface surfaces therein, with an interface surface resisting the rotation of the tooth on a longitudinal geometric axis in one direction, and another interface surface resisting the rotation of the tooth on the longitudinal geometric axis in an opposite direction. An excavator tooth may include a cavity limited by opposite side walls, with at least one of the side walls having an insert receiving recess formed internally therein, whereby the recess receives an insert installed in an adapter nozzle.
    公开号:BR112012008613B1
    申请号:R112012008613-8
    申请日:2010-10-28
    公开日:2020-12-08
    发明作者:Marlin R. Smith
    申请人:Black Cat Blades Ltd.；
    IPC主号:
    专利说明:

    Technical Field of the Invention
    [0001] This invention relates generally to equipment used and operations performed in conjunction with excavation and, in an example described below, more particularly it provides a refurbished excavator tooth accessory. Background of the Invention
    [0002] Excavator attachments, such as buckets, ditch excavators, etc., are commonly provided with one or more teeth releasably attached to the attachments for convenient replacement as the teeth wear out. In the past, such digging teeth were attached to nozzles on adapters positioned on the lips of the implements, with various shapes of pins, wedges, etc. being used to reliably connect teeth.
    [0003] Before connecting pins were installed and removed by hammer impact, which was later widely recognized as unsafe and inconvenient, leading to the development of non-impact connection methods. Unfortunately, most of these non-impact bonding systems are unduly complex, expensive, inconvenient to use and / or unsuitable for the harsh environment of an excavation operation.
    [0004] Therefore, it will be appreciated that advances are needed in the excavator tooth connection technique. Such advances could include the provision of an improved connection system that can be reconverted to existing adapter nipples, or that can be supplied for newly designed adapter nipples. Summary of the Invention
    [0005] In the invention below, an excavator tooth and a connection system are provided which solve at least one problem in the technique. An example is described below in which an excavator tooth is attached to an adapter nozzle using a single connection system. In another example, the connection system can be reconverted to an existing adapter tip.
    [0006] In one aspect, this invention provides for the technique a connection system for an excavator implement that can include an excavator tooth having a nozzle receiving cavity formed in it, an insert received in a recess formed in an adapter nozzle and a threaded fastener that reliably holds the tooth in the nozzle. The fastener may have a helical thread of fastener formed on it which is eccentric in relation to the fastener body.
    [0007] In another aspect, an excavator tooth for use in a nozzle of an excavator adapter may include a nozzle receiving cavity bounded by opposite side walls, and at least one of the side walls having an insert receiving recess and surfaces of generally flat insert contact interfaces formed therein. One interface surface can resist rotation of the tooth on a longitudinal geometric axis of the tooth in one direction, and another interface surface can resist rotation of the tooth on the longitudinal geometric axis in an opposite direction.
    [0008] In yet another aspect, an excavator tooth may include a nozzle receiving cavity limited by opposite walls, with at least one of the opposite walls having an insert receiving recess formed therein. The recess can receive an insert installed in an adapter nozzle.
    [0009] These and other characteristics, advantages and benefits will become apparent to someone of ordinary experience in the technique with careful consideration of the detailed description of representative examples below and the accompanying drawings, in which similar elements are indicated in the various figures using the same reference numbers. Brief Description of Drawings
    [00010] Figure 1 is a perspective view of an excavator implement configuring principles of the present invention;
    [00011] Figure 2 is a top plan view of an excavator tooth, adapter nozzle and fastener, each of which sets out principles of the present invention and can be used in the implement of figure 1;
    [00012] Figure 3 is a side view of the excavator tooth, adapter nozzle and fastener in figure 2;
    [00013] Figure 4 is a cross-sectional view of the tooth and adapter nozzle, taken along line 4-4 of figure 8;
    [00014] Figure 5 is a cross-sectional view of the adapter tooth and nozzle, taken along line 5-5 of figures 2 and 6;
    [00015] Figure 6 is a cross-sectional view of the tooth and nipple, taken along line 6-6 of figure 3;
    [00016] Figure 7 is a cross-sectional view of the tooth and a top plan view of the nozzle on it;
    [00017] Figure 8 is a cross-sectional view of the tooth and a side view of the nozzle on it;
    [00018] Figure 9 is a top plan view of the spout;
    [00019] Figure 10 is a side view of the nozzle;
    [00020] Figure 11 is a top plan view of another configuration of the nozzle;
    [00021] Figure 12 is a cross-sectional view of the nozzle configuration of Figure 11 in a complementary shaped configuration of the tooth;
    [00022] Figures 13-16 are seen from a connection system for the adapter tooth and nozzle.
    [00023] Figures 17-21 are seen from another configuration of the connection system;
    [00024] Figures 22-26 are seen from yet another connection system configuration;
    [00025] Figures 27-29 are seen from an additional configuration of the connection system;
    [00026] Figures 30 and 31 are elevation and cross section views of a prior art adapter nozzle;
    [00027] Figures 32-34 are elevation, plan and side views of an insert that can be used with the adapter tip of figures 30 and 31;
    [00028] Figure 35 is an elevation view of the insert installed in the adapter tip; and
    [00029] Figures 36 and 37 are seen in elevation and plan view of the installation of a tooth in the adapter nozzle. Detailed Description of the Invention
    [00030] Representatively illustrated in figure 1 is an excavator implement 10 that configures principles of this invention. The implement 10 is shown in figure 1 as including a bucket 12 having a lower lip contacting material 14. Mounted along the lip 14 are spaced apart adapters 16. Adapters 16 allow to mount the excavator teeth 18 along the lip 14, such that the implement 10 is more efficient in breaking and excavating material into the bucket 12.
    [00031] At this point, it should be noted that implement 10 as represented in figure 1 is merely an example of a wide variety of implements that can incorporate the principles of this invention described more fully below. Other types of attachments such as trenchers, etc., can use the principles of this invention. In fact, most excavation equipment using replaceable excavator teeth can benefit from the principles of this invention.
    [00032] Multiple configurations of adapters 16 and teeth 18 are shown in the drawings and are described below for purposes of illustration and example, such that a person skilled in the art can appreciate how to make and use the principles of this invention, and the advantages thereof. However, it should be clearly understood that the principles of this invention are not limited at all to the specific configurations of the adapters 16, teeth 18 and associated components described here. In contrast, the principles of this invention are applicable to a wide variety of excavator teeth configurations, adapters and connection systems.
    [00033] Referring now further to figure 2, a top plan view of engaged portions of an adapter 16 and tooth 18 is represented illustrated. Figure 2 also represents a connection system 20 which is used to reliably secure tooth 18 to adapter 16.
    [00034] In figure 2 it can be seen that a “male” nozzle 22 of adapter 16 is received inside a “female” cavity 24 formed in a rear portion of tooth 18. To loosely attach tooth 18 to nozzle 22, a fastener 26 is installed in openings 28 formed through opposite side walls 30 of the tooth. The fastener 26 also extends through another opening 32 formed laterally through the nozzle 22.
    [00035] Each of these components is described more fully below, along with the advantages derived from their unique construction and operation. Among these advantages are the firm, reliable, economical, robust and convenient connection of the tooth 18 to the adapter nozzle 22 using the connection system 20, as well as the fully stabilized complementary coupling between the tooth and the adapter nozzle that beneficially reduces the wear between them. components.
    [00036] Referring now further to figure 3, a side view of the connection system 20 is represented illustrated. In this view, it can be seen that the tooth cavity 24 is bounded by an upper wall 34, a lower wall 36 and an extreme wall 28, as well as the side walls 30 described above.
    [00037] The tooth 18 and the adapter nozzle 22 are aligned along a longitudinal geometric axis 40 of the tooth. The fastener 26 is aligned with a lateral geometric axis 42 that extends transversely (perpendicular to the longitudinal geometric axis 40). Another geometric axis 33 is orthogonal to a plane defined by the two other geometric axes 40, 42, and intersects the upper and lower walls 34, 36.
    [00038] Note that, although geometry axes 40, 42 are represented in the drawings as being horizontally oriented, and geometry axis 44 is represented as being vertically oriented, geometry axes could be oriented in any direction when tooth 18 is connected to the adapter nozzle 22, and when implement 10 is used in excavation operations. Thus, the orientations of the geometric axes 40, 42, 44 shown in the drawings are for convenience of description, illustration and example only.
    [00039] Referring now further to figure 4, a cross-sectional view of adapter 16 and tooth 18 is shown representatively. In this view, several additional features of the connection system 70 can be seen more clearly.
    [00040] Opening 32 has helical threads 46 at each opposite end thereof. Note that threads 46 are not coaxial with openings 28, 32, but instead are eccentric in relation to the openings. Preferably, the threads 46 are tangential to one side of the opening 32 (as described more fully below), and are discontinuous, where each of the threads ends without connecting with the thread at the other end of the opening.
    [00041] The two threads 46 allow the fastener 26 to be installed from any side of the openings 28, 32. The termination of the threads 46 in the opening 32 prevents the fastener 26 from being installed too far into the opening. The eccentric position of the threads 46 in relation to the openings 28, 32 allows a body of the fastener 26 to fully contact the openings with the installation, thereby providing increased surface area and reduced wear, as described more fully below.
    [00042] The openings 28 are also not coaxial with the opening 32. In addition to the benefits discussed above, the eccentric positioning of the openings 28, 32 also provides the intuitive, automatic alignment of the fastener 26 with the openings in the installation, as described more completely below.
    [00043] The recesses 48 (used for an example of a locking device 82 described below) are shown in figure 4 as being formed in the nozzle portion 22 adjacent to opening 32 and threads 46. Various devices for locking fastener 26 in the tooth 18 and adapter nozzle 22 are described more fully below.
    [00044] Referring now to Figure 5, another cross-sectional view of tooth 18 and adapter nozzle 22 is shown. In this view it can be seen that tooth 18 touches nozzle 22 primarily on an interface surface 50 formed on the extreme lateral wall 40 of tooth 18 and thereby provides substantial resistance to the force 52 applied to the tooth along the longitudinal geometric axis.
    [00045] In addition, angled flat interface surfaces 53 are provided which, in addition to resisting the longitudinal force 52, also function to center and stabilize the tooth 18 with respect to the longitudinal geometric axis 40. The surfaces 53 are preferably inclined in relation to the longitudinal and orthogonal geometric axes 40, 44, but they are parallel to the lateral geometric axis 42 of tooth 18.
    [00046] Referring now to Figure 6, another cross-sectional view of tooth 18 and adapter nozzle 22 is shown. In this view it can be seen that additional inclined interface surfaces are used in the connection system 20 to resist various other forces applied to the tooth 18, and to stabilize the tooth in the adapter nozzle 22.
    [00047] The flat interface surfaces 54, 56 formed in the upper and lower walls 34, 36 resist forces 58 applied to the tooth along the geometric axis 44 and work to center and stabilize the tooth 18 in the adapter nozzle 22 in response to these. forces. The flat interface surfaces 60, 62 formed on the side walls 30 resist the forces 64 applied to the tooth 18 along the geometry axis 42 and work to center and stabilize the tooth on the adapter nozzle 22 in response to these forces.
    [00048] In addition, surfaces 54, 62 function to resist rotation of tooth 18 on the adapter nozzle 22 due to the torque 66 applied to the tooth on the longitudinal geometric axis 40. Similarly, surfaces 56, 60 work to resist rotation of tooth 18 on the adapter nozzle 22 due to the opposing directed torque 68 applied on the geometric axis 40.
    [00049] Preferably, each of the interface surfaces 54, 56, 60, 62 is inclined with respect to each of the geometrical axes 40, 42, 44 for reinforced stabilization of tooth 18 in adapter nozzle 22. Meanwhile, surfaces 54, 56, 60, 62 could be oriented in another way, without deviating from the principles of this invention. In addition, since the tooth cavity 24 is substantially shaped complementarily with respect to the adapter nozzle 22, the nozzle has interface surfaces formed thereon that are similarly shaped and oriented as the surfaces 50, 53, 54, 56, 60, 62 and other interface surfaces described here.
    [00050] The interface surfaces 60, 62 combine to form a convex portion of the cavity 24, thereby increasing the lateral thickness of the side walls 30. This is advantageous to provide sufficient surface area of contact between the openings 28 and each end of the fastener 26, as described more fully below.
    [00051] Referring now to figure 7, another cross-sectional view of tooth 18 in adapter nozzle 22 is shown. In this view it can be seen that additional flat interface surfaces 70 are formed on the adjacent end wall 38 and on opposite sides of the surface 50.
    [00052] Surfaces 70 resist longitudinal force 52, and also function to center and stabilize tooth 18 in relation to longitudinal geometric axis 40 in response to force. The surfaces 70 are preferably inclined with respect to the longitudinal and lateral geometric axes 40, 42, but are parallel to the orthogonal geometric axis 44 of tooth 18. In the examples shown in the drawings, surfaces 53, 70 intersect surface 50 at a generally rectangular periphery. of the same, due to the orientations of these surfaces, but other configurations can be used, if desired.
    [00053] Referring now to figure 8, another cross-sectional view of tooth 18 in adapter nozzle 22 is shown illustrated. In this view it can be seen that the upper and lower walls 34, 36 have flat interface surfaces 72, 74 formed on them that resist the forces 58 applied to the tooth along the geometric axis 44.
    [00054] The surfaces 72, 74 are preferably spaced apart longitudinally from each other along each of the upper and lower walls 34, 36, and are preferably parallel to each other. The surfaces 72, 74 are also preferably displaced from each other in a direction perpendicular to the surfaces. Surfaces 72, 74 could be slightly angled, if desired, but preferably such relative inclination is minimal.
    [00055] The surfaces 72, 74 are preferably slightly inclined with respect to the longitudinal geometric axis 40 and the orthogonal geometric axis 44, but are parallel to the lateral geometric axis 42. The surfaces 72, 74 could be parallel to the longitudinal geometric axis 40, if desired.
    [00056] Surfaces 72 work to resist the rotation of tooth 18 on the adapter nozzle 22 due to the torque 76 applied to the tooth on the lateral geometric axis 42. Similarly, surfaces 74 work to resist the rotation of tooth 18 on the adapter nozzle 22 due to the oppositely directed torque 78 applied on the geometrical axis 42.
    [00057] Referring further to figures 9 and 10, the respective top and side views of the adapter nozzle 22 are represented, in part, of the rest of the connection system 20. In these views, the interface surfaces described above as being formed in the tooth cavity 24 are indicated in the adapter nozzle 22 to demonstrate how the surfaces in the nozzle and cavity cooperate to form a complementarily shaped stabilization and connection system.
    [00058] Referring now further to Figures 11 and 12, another configuration of the tooth 18 and adapter nozzle 22 is represented illustrated. In this configuration, the interface surfaces 54, 56 on the upper and lower walls 34, 36 are separated by another sloping flat surface 80. On the other hand, the configuration of figures 11 and 12 is substantially similar to the configuration of figures 2-10 and it works essentially the same way. This demonstrates that various configurations of the connection system 20 can be used to maintain the principles of this invention.
    [00059] Referring now further to figures 13-16, the connection system 20 is represented illustrated, together with the components of a locking device 82 to prevent inadvertent removal of the fastener 26 from the adapter nozzle 22 and tooth 18. A figure 13 represents the locking device 82 installed in the adapter nozzle 22 and tooth mounted, figures 14 and 15 represent the specially constructed fastener 26, and figure 16 represents a locking member 84 of the locking device.
    [00060] The fastener 26 as shown in figure 14 has an elongated body 86, with a helical thread 88 formed near one end of the body. Thread 88 is eccentric with respect to body 86, such that the thread is tangential with a side side of the body.
    [00061] The body 86 is generally cylindrical in shape, but can be slightly tapered (eg, tapered inwardly from the threaded end 88 towards the non-threaded end approximately one degree on one side), to facilitate removal of the fastener 26 from the opening 32 in the adapter nozzle 22. Contact surfaces are provided at each end of the body 86 to contact the opening 28 on each side of the tooth 18 (as shown in figure 13), and an intermediate portion of the body provides a contact surface 92 which contacts the opening 32 in the adapter nozzle 22.
    [00062] When installing the fastener 26, the body 86 is inserted through the opening 28 on one side of the tooth 18, and into the opening 32 in the adapter nozzle 22. The fastener 26 is rotated until the thread 88 aligns with the opening 28.
    [00063] Note that the thread 88 is displaced eccentrically in relation to the body 86 of the fastener 26 by the same amount as the opening 28 is displaced eccentrically in relation to the opening 32, and the thread 88 is slightly smaller in diameter than the opening 28. Thus, it is intuitive for an operator to align the thread 88 with the opening 28 once the body 86 has been inserted into the opening 32 of the adapter nozzle 22.
    [00064] With the thread 88 inserted into the opening 28, the thread 88 will also be aligned for ready engagement with the respective one of the threads 46 in the adapter nozzle 22. The fastener 26 is then rotated 280 degrees (or another amount of rotation, such as 90 degrees, if desired, depending on the depth of the thread 46 in the adapter nozzle 22).
    [00065] At this point, with the contact surfaces 90 contacting the openings 28, the contact surface 92 engaged with the opening 32 and the threads 46, 88 engaged with each other, the tooth 18 is attached to the adapter nozzle 22. The locking device 82 can then be used to prevent unintentional unscrewing of the fastener 26.
    [00066] Note that a socket 94 is provided at one end of the fastener 26 for the use of an appropriate tool to rotate the fastener when threading or unscrewing it in the connection system 20. The locking device 82 uses this socket 94, in conjunction with a slot 96 extending laterally between the socket and the outer surface of the body 86, to retain the lock member 84.
    [00067] As shown in figure 16, the locking member 84 is complementarily shaped with respect to socket 94 and slot 96 on one side 98 of the locking member, and has a lobe 100 extending outwardly from an opposite side. The lobe 100 has an external curvature that matches that of opening 28 such that when fastener 26 is properly threaded into opening 32 and side 98 of latch member 84 is inserted into socket 94 and slot 96, the lobe will engage opening 28 cooperatively to prevent loosening of the fastener.
    [00068] Preferably, lock member 84 is made of a resilient material, such as an appropriately durable elastomer. The end of the locking member 98 and lobe 100 are preferably dimensioned for an interference fit in the respective socket 94 and opening 28, in order to prevent inadvertent dislodging of the locking member of the fastener 26 and tooth 18.
    [00069] In the locking device 82 of figures 13-16, the locking member 84 engages the opening 28 to prevent unintentional unscrewing of the fastener 26. However, other types of locking devices can be used, if desired.
    [00070] Referring now further to figures 17-21, another configuration of the locking device 82 is shown illustrated. In this configuration, the locking member 84 engages the fastener 26 and a slot 102 formed in the adapter nozzle 22 adjacent the opening 32 to prevent inadvertent unscrewing of the fastener.
    [00071] The locking member 84 as shown in figures 20 and 21 includes an elongated key 104 which is inserted into the aligned slot 96 in the fastener 26 and the slot 102 in the adapter nozzle 22 after the fastener has been appropriately threaded into the adapter nozzle. The slot 96 in the fastener 26 is suitably elongated for this purpose, as shown in figures 18 and 19. Again, the locking member 84 is preferably made of a resilient material and is preferably assembled with interference in the fastener 26 and slits 96, 102 for prevent inadvertent removal.
    [00072] Referring now further to figures 22-26, another configuration of the locking device 82 is represented illustrated. In this configuration, the locking member 84 is in the form of a cylindrical rod which is retained in the adapter nozzle 22 between the recess 48 and the opening 32 (the recess 48 is seen more clearly in figures 4 and 8).
    [00073] The locking member 84 is resiliently pressed against the opening 32 by a pressing device 106 positioned in the recess 48. The pressing device 106 is preferably made of an elastomeric material, but other types of pressing devices (such as springs, etc.). ) can be used, if desired.
    [00074] A holder 108 is formed on the thread 88 of the fastener 26, as shown in figure 23. As the fastener 26 is rotated to thread the fastener on the adapter nozzle 22, the thread 88 moves the lock member 84 against the recess 48, thereby compressing the pressing device 106. When the fastener 26 has been properly threaded on the adapter nozzle 22, the stop 108 will be aligned with the locking member 84, and the locking member 84 will be forced by the pressing device 106 to contact the holder, thus preventing inadvertent unscrewing of the fastener.
    [00075] This sequence is shown in figures 24-26. Figure 24 represents the arrangement of the fastener 26, locking member 84 and pressing device 106 when the fastener is inserted into the opening 32 and the thread 88 is aligned with the opening 28, long before screwing the fastener into the adapter nozzle 22.
    [00076] Figure 25 represents the arrangement of the fastener 26, locking member 84 and pressing device 106 when the fastener has been rotated 90 degrees, thus partially screwing the fastener into the adapter nozzle 22. Note that the locking member 84 has been moved by the thread 88 (due to its eccentric position in relation to the body 86) against the pressing device 106, thereby compressing the pressing device.
    [00077] Figure 26 represents the arrangement of the fastener 26, locking member 84 and pressing device 106 when the fastener was rotated 180 degrees, thus fully screwing the fastener into the adapter nozzle 22. Note that the locking member 84 is now engaged with the holder 108, and such engagement is maintained resiliently by the pressing device 106. Unscrewing the fastener 26 would again require compressing the pressing device 106, which can be conveniently performed when desired, but which would not be expected to happen inadvertently.
    [00078] Referring in addition to figures 27-29, another configuration of the connection system 20 is shown illustrated. The connection system 20 is shown without the fastener 26 and locking device 82 for illustrative clarity, but the example of connection system of figures 27-29 is configured to use a fastener and a locking device of the type illustrated in figures 22- 26 and described above.
    [00079] The configuration of figures 27-29 differs in at least one significant way from the configuration of figures 22-26, in that the openings 28 in the side walls 30 of the configuration of figures 27-29 have threaded engagement portions 110 formed therein. . The threaded engagement portions 110 are shown in the drawings as a partial thread or a helical ramp that extends only partially circumferentially over the interior of the opening 28. However, other types of thread contact structures can be used, if desired.
    [00080] Thread contact portions 110 work to contact thread 88 on fastener 26 as the fastener is unscrewed from opening 32 at nozzle 22. Thread 88 engages one of the portions 110 and, as the fastener is rotated counterclockwise (as shown in the drawings), the threaded or ramp configuration of the threaded contact portion causes fastener 26 to continue extraction from opening 32. This provides the most convenient removal of fastener 26 from openings 28, 30.
    [00081] Note that the threaded contact portions 110 are eccentric with respect to the opening 32 in the nozzle 22. In addition, although the threaded contact portions 110 are formed in each of the openings 28 in each of the side walls 30 as represented in the drawings, the principles of this invention could be practiced with only an opening 28 formed through one of the side walls 30, in which case only a thread contact portion 110 can be used.
    [00082] Referring now further to Figures 30 and 31, a portion of an prior art adapter 114 is represented illustrated. Adapter 114 includes a nozzle 116 which, unfortunately, did not previously have the advantages of the nozzle / tooth 20 stabilization and connection system described above for adapter nozzle 22 and tooth 18. However, it is possible, using the principles described below, to obtain some or all of the advantages for adapter 114 of figures 30 and 31.
    [00083] Adapter 114 includes a fastener receiving opening extending laterally 118. On a side side, a cylindrical recess 120 is formed in nozzle 116. In the past, such a recess would have been used to contain a retainer to prevent inadvertent dislodging from a fastener installed in opening 118.
    [00084] Referring now further to figures 32-34, an insert 122 that shapes the principles of this invention is represented illustrated. Insert 122 includes a cylindrical projection 124 that is dimensioned such that it fits complementarily within recess 120 in adapter nozzle 116.
    [00085] In addition, insert 122 includes many of the features described above for adapter 16. For example, insert 122 includes opening 28, eccentrically displaced thread 46, recess 48 and interface surfaces 60, 62. These elements may provide some or all of the advantages described above for adapter tip 116 (e.g., enhanced enhanced tip / tooth connection and stabilization of a tooth in the tip).
    [00086] Referring now further to figure 35, insert 122 is represented illustrated and installed in adapter tip 116. In addition, locking device 82 is shown to be installed in insert 122. Note, however, that other lock (including any of the locking devices described above) can be used while maintaining the principles of this invention.
    [00087] Opening 32 in insert 122 is preferably concentric with opening 118 in adapter nozzle 116. However, note that thread 46 is eccentric with respect to each of the openings 32, 118, similar to the way in which the threads are eccentric with respect to the opening 32 in the adapter nozzle 22 described above.
    [00088] Referring now further to figures 36 and 37, the installation of an excavator tooth 126 in the adapter nozzle 116 is represented illustrated. The tooth 126 has a cavity 128 formed therein that is complementarily shaped in relation to the adapter nozzle 116 with the insert 122 installed therein.
    [00089] Thus, the tooth cavity 128 has interface surfaces 130, 132 formed in it that complementarily contact surfaces 60, 62 in insert 122. The contact between these respective surfaces 60 and 130, and 62, 132, provides reinforced stabilization between tooth 126 and adapter tip 116, for example, for resisting the torque applied in each of the directions opposite the tooth on its longitudinal geometric axis 40.
    [00090] The tooth 126 also has the opening 28 and the threaded contact portion 110 formed on one side of it to receive the fastener 26. The threaded contact portion 110 helps to remove the fastener 26 from the adapter 114 and tooth 126 as described above. Although the thread contact portion 110 is shown in Figures 36 and 37 as being formed on only one side of the tooth 126, in other examples the thread contact portion can be formed on both sides of the tooth, thus allowing the tooth be inverted at adapter tip 116.
    [00091] Fixer 26 can be installed on tooth 126 and adapter 114 as described above for adapter 16 and tooth 18, after nozzle 116 is received in cavity 128. Locking device 82 will prevent inadvertent dislodging of fixer 26 from tooth 126 and adapter 114.
    [00092] It will now be fully appreciated that the connection system 20, excavator tooth 18, 126, adapter nozzle 22 and insert 122 described above provide several advances in the technique of installing, fixing and removing excavator teeth. The fastener 26 and locking device 82 loosely attach the teeth 18, 126 to the respective adapter nozzles 22, 116 in a manner that is desirably simple, safe, efficient, convenient and reliable.
    [00093] The above invention provides for the technique a connection system 20 for an excavator implement 10. System 20 can include an excavator tooth 126 having a nozzle receiving cavity 128 formed therein, an insert 122 received in a recess 120 formed on an adapter nozzle 116, and a threaded fastener 26 that reliably secures the tooth 126 to the nozzle 116. The fastener 26 may have a helical thread of fastener 88 formed on it that is eccentric with respect to a body 86 of the fastener 26.
    [00094] Insert 122 may have a threaded fastener receiving opening 32 formed therein, with at least one fastener receiving thread 46 formed on insert 122 being eccentric with respect to opening 32.
    [00095] The fastener thread 88 can extend outwardly from the body 86, with the fastener thread 88 on a lateral side of the body 86 being tangential with an external surface of the body 86.
    [00096] Tooth 126 can have fastener receiving openings 28 formed through opposite side walls 136 of cavity 128. Fastener body 86 can engage tooth fastener receiving openings 28 on opposite sides of thread 88 when fastener 26 holds tooth 126 in adapter nozzle 116.
    [00097] Insert 122 may have a fastener receiving aperture 32 formed therein, with the insert fastener receiving opening 32 being eccentric with respect to tooth fastener receiving openings 28, such that the fastener thread 88 is coaxial with the tooth clamp receiver opening 28 when the clamp body 86 is coaxial with the insert clamp receiver opening 32.
    [00098] System 20 may also include a locking device 82 that engages both fastener 26 and insert 122, whereby locking device 82 prevents rotation of fastener 26 with respect to insert 122.
    [00099] Insert 122 may include angled interface surfaces 60, 62 that complement contact surfaces 130, 132 formed in tooth 126, whereby the contact between insert interface surfaces 60, 62 and the respective interface surfaces tooth 130, 132 stabilizes tooth 126 at adapter tip 116.
    [000100] An excavator tooth 126 for use in a nozzle 116 of an excavator adapter 114 is also described above. The tooth 126 may include a nozzle receiving cavity 128 limited by opposite side walls 136, with at least one of the side walls. 136 having an insert receiving recess 134 formed therein, and generally flat insert contact surfaces 130, 132 formed thereon, an interface surface 130 resisting rotation of tooth 126 about a longitudinal geometric axis 40 of tooth 126 in one direction , and another interface surface 132 resisting the rotation of tooth 126 over longitudinal geometric axis 40 in an opposite direction.
    [000101] Each of the interface surfaces 130, 132 can be inclined with respect to a lateral axis 42 of tooth 126 perpendicular to the longitudinal axis 40.
    [000102] A tooth clamp receiver opening 28 formed through at least one of the side walls 136 may include a thread contact portion 110 that engages a clamp thread 88 as a clamp 26 is unscrewed from a receiver clamp opening. fixative 32.
    [000103] The above invention also describes an excavator tooth 126 for use in a nozzle 116 of an excavator adapter 114. The tooth 126 may include a nozzle receiving cavity 128 limited by opposite side walls 136, with at least one of the walls sides 136 having an insert receiving recess 134 formed therein, through which recess 134 receives an insert 122 installed in adapter nozzle 116.
    [000104] At least one of the side walls 136 may have a fastener receiving opening 28 formed through it perpendicular to a longitudinal geometric axis 40 of tooth 126, with the receiving fastener opening of tooth 28 including a thread contact portion 110 which engages a fastener thread 88 as a fastener 26 is unscrewed from an insert fastener receiving opening 32.
    [000105] The threaded contact portion 110 may include a threaded portion of the receiving tooth clamp opening 28. The threaded contact portion 110 may include a ramp portion of the receiving fastener opening 28. The threaded contact portion 110 can be eccentric in relation to the insert fastener receiving opening 32.
    [000106] The insert receiving recess 134 may have generally flat nozzle contact surfaces 130, 132 formed therein, with an interface surface 130 resisting rotation of tooth 126 over a longitudinal geometric axis 40 of tooth 26 in one direction , and another interface surface 132 resisting the rotation of tooth 126 over longitudinal geometric axis 40 in an opposite direction. Each of the interface surfaces 130, 132 can be inclined with respect to a lateral geometry axis 42 of tooth 126 perpendicular to the longitudinal geometry axis 40.
    [000107] It should be understood that the various examples described above can be used in various orientations, such as inclined, inverted, horizontal, vertical, etc., and in various configurations, without deviating from the principles of the present invention. The configurations illustrated in the drawings are represented and described merely as examples of useful applications of the principles of the invention, which are not limited to any specific details of these configurations.
    [000108] Of course, a person skilled in the art will readily appreciate, upon careful consideration of the above description of representative configurations, that many modifications, additions, substitutions, deletions, and other changes can be made to these specific configurations, and such changes are within the scope of the principles of the present invention. Consequently, the foregoing detailed description should be clearly understood to be provided by way of illustration and example only, the spirit and scope of the present invention being limited only by the appended claims and their equivalents.
    权利要求:
    Claims (8)
    [0001]
    1. Connection system (20) for an excavator implement, comprising an excavator tooth (126) having a cavity (128) nozzle receiving cavity (128) formed therein; characterized by the fact that it further comprises: an insert (122) received in a recess (134) formed in an adapter nozzle (116); and, a threaded fastener (26) that reliably holds the tooth (126) in the nozzle (116), the fastener (26) having a helical thread of fastener (88) formed in it that is eccentric in relation to a body (86) of the fastener (26).
    [0002]
    System (20) according to claim 1, characterized in that the insert (122) has a threaded fastener receiving opening (32) formed in it, and in which at least one fastener receiving thread (46) is formed in the insert (122) it is eccentric in relation to the opening (32).
    [0003]
    System (20) according to claim 1, characterized by the fact that the fastener thread (88) extends outwardly from the body (86), and the fastener thread (88) on a lateral side of the body (86) is tangential to an external body surface (86).
    [0004]
    System (20) according to claim 1, characterized by the fact that the tooth (126) has fastener receiving openings (28) formed through opposite side walls (136) of the cavity (128), and the fastener body (86) engages the tooth opener receiving openings (28) on opposite sides of the thread (88) when the fastener (26) attaches the tooth (126) to the adapter nozzle (116).
    [0005]
    5. System (20) according to claim 4, characterized by the fact that the insert (122) has a fastener receiving opening (32) formed in it, the receiving fastener opening (32) being inserted eccentric in relation to the tooth opener receiving openings (28), such that the fixing thread (88) is coaxial with the receiving fixing opening (28) when the fixing body (86) is coaxial with the receiving opening (32) insert fastener (122).
    [0006]
    System (20) according to claim 5, characterized by the fact that at least one of the tooth holder receiving openings (28) includes a threaded engagement portion (110) that engages the fastener thread (88) as the fastener (26) is unscrewed from the receiver opening (32) of the insert fastener (122).
    [0007]
    System (20) according to claim 1, characterized in that it additionally comprises a locking device (82) that engages both the fastener (26) and the insert (122), whereby the locking device (82 ) prevents rotation of the fastener (26) 'in relation to the insert (122).
    [0008]
    8. System (20) according to claim 1, characterized by the fact that the insert (122) includes inclined interface surfaces (60, 62) which complementarily interface surfaces (130, 132) formed in the tooth, through the that the contact between the insert interface surfaces (60, 62) (122) and the respective tooth interface surfaces (130, 132) stabilizes the tooth in the adapter nozzle (116).
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    公开号 | 公开日
    JP5707385B2|2015-04-30|
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    PL2411587T3|2017-09-29|
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    WO2011059747A2|2011-05-19|
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    AR084793A2|2013-06-26|
    KR101388847B1|2014-04-23|
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    CA2925026A1|2011-05-19|
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    EP2494114A2|2012-09-05|
    BR122018001417A2|2019-12-10|
    CA2776744C|2015-02-17|
    WO2011059747A3|2011-09-09|
    BRPI1006529A2|2016-03-29|
    CA2842622A1|2010-09-30|
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    法律状态:
    2019-12-03| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-12-17| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-08-18| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-11-10| B09W| Decision of grant: rectification|Free format text: RETIFICACAO DEVIDO A INCORRECAO NO TITULO DO PARECER |
    2020-12-08| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 08/12/2020, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US12/608,803|US7980011B2|2009-03-23|2009-10-29|Fully stabilized excavator tooth attachment|
    US12/608,803|2009-10-29|
    PCT/US2010/054499|WO2011059747A2|2009-10-29|2010-10-28|Retrofitted excavator tooth attachment|BR122018001417-2A| BR122018001417B1|2009-10-29|2010-10-28|excavator tooth for use in a nozzle of an excavator adapter|
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