• 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:
    The invention relates to an end (10) of the articulated arm (30) of a three-point attachment of a work machine, comprising a body (18) having a housing part (26) and a housing part (27) surrounded by a body (13) for the housing into which the articulation ball is removably mounted, preferably in two parts (19, 19 '), the sliding surfaces (17) fitted to the housing part, the passage (11) arranged on the sliding surface edge (52) for mounting or removing the articulation ball. The passage is adapted to extend to the shell portion of the body. In addition, the invention also relates to the articulation arm and methods for making the articulation head or articulation arm.
    公开号:FI20175611A1
    申请号:FI20175611
    申请日:2017-06-28
    公开日:2018-12-29
    发明作者:Timo Viikki
    申请人:Lh Lift Oy；
    IPC主号:
    专利说明:

    MACHINE THREE-POINT MOUNTING BALL JOINT HEAD, JOINT AND METHODS FOR MANUFACTURE OF THE JOINT HEAD AND JOINT
    The present invention relates to an end of an articulated link with a ball joint,
    - a body consisting of a housing part and a shell part around it,
    - a housing for a hinged ball mounted on the body housing part, in which the hinged ball can be detachably mounted, preferably in two parts,
    sliding surfaces fitted to the body portion, a passage adapted to the edge of the sliding surface for mounting or removing the articulation ball from the body.
    The invention also relates to an articulated arm and methods for making an articulated head and articulated arm.
    Much of the preamble, the link arm, more generally, the articulated arm, is known, for example, from Finnish patent number 116189.
    This drawbar is here part of the three-point linkage. The drawbar is used in vehicles, especially tractors or similar implements. The drawbar is an elongated body. At one end there are means for attaching the drawbar to the implement and at the opposite end means for engaging the implement on the drawbar and thereby to the implement. At least one end, sometimes even at both ends of the articulation, joins via a ball joint, such as is provided at the end of the lower link.
    The ball joint is basically a bearing, the functional parts of which are the ball joint and the body having a housing for the ball joint. In the shown drawbar, the ball joint is part of the shaft portion and the joint2
    20175611 prh 28 -06- 2017 The ball is arranged in two parts for mounting and dismounting in a hub mounted on the link ball. In this case, the arm portion with the ends of the articulated arm can be made to the end and only finally the articulation ball is inserted into the housing 5 provided on the drawbar.
    In the drawbar referred to in the cited FI patent, the ball joint is removable. In addition, the ball joint body and the ball joint are arranged such that the ball joint can be mounted or removed without tools. This is achieved by two spherical halves and two bevels arranged on the frame edge in addition. Through the chamfer, the ball halves can be taken in turn to a nest where they form a joint ball. The structure makes it possible to check the condition of the ball joint 15 and to replace the ball joint.
    U.S. Patent No. 6352123 also discloses a draw bar having a detachable articulated ball. Here, however, the articulation ball is complete and is again threaded through two bevels into the housing in the arm portion 20 and pivoted in place. Here too, the sliding surfaces of the ball joint shell portion are tempered. Due to its removable nature, the articulation ball has only a narrow sliding surface and the body has to be open. This weakens the structure of the ball joint and may release the ball during use. In addition, lubrication of the ball joint 25 is difficult and incomplete here.
    In both of the above solutions, the bevels through which the hemispheres forming the hemispherical ball are introduced into the housing are machined to the end of the hinged arm. Chamfer machining has its own separate and thus time-consuming and even exacting work steps for other objects to be machined at the end of the articulated arm, such as the ball seat. The bevels are
    20175611 prh 28 -06- 2017 must be exactly the right size. In this case, forming the bevels as their own work step and demanding resources increases the cost of manufacturing the articulated arm end.
    Further, in known ball joints, the problem is also of arranging the lubrication of the ball joint at the end of the joint. Arranging the lubrication also requires machining of the articulated arm, if any lubrication has even been carried out. Non-lubrication consumes parts of the ball joint. In addition, known solutions for lubricating the ball joint 10 require frequent lubricant addition.
    The object of the invention is to provide an end of a three-point linkage with a ball joint which is simpler to manufacture and also easier to maintain. It is a further object of the invention to provide an articulated arm and methods for manufacturing a ball joint articulated head and / or articulated arm. Characteristic features of the present invention will be apparent from the appended claims.
    By extending the articulated ball to the articulating parts at the end of the articulated arm, there are several benefits to be gained. First of all, the passage can then be accomplished in the simplest and less resource-intensive manufacturing techniques than in the known substantially machining-based formation. Examples of these techniques include forging or forming at the end of the articulation at the casting stage. In this case, the passage may be formed earlier in relation to the machining step, that is to say substantially in the manufacturing step 30 of the head blank.
    According to one embodiment, the passage is adapted to form a single recess formed at the edge of the housing and adapted to extend
    20175611 prh 28 -06- 2017 for body shell part. A single hole passage is simple to forge or cast. In addition, the groove provides an effective and maintenance-friendly way of providing ball joint lubrication. The passage may be closed by a lid and a grease nipple or the like may be provided on the lid to provide a lubricant in the passage-forming recess. The cavity holds a lot of lubricant, which contributes to the longer service intervals. Further, as the passage extends into the shell portion of the articulated arm head, the recess is arranged in the thickness direction of the housing to extend into the region of the sliding surfaces 10 of the ball joint housing. This ensures comprehensive and effective lubrication of the ball joint.
    According to one embodiment, the locking of the access cover can be achieved, for example, with a grease nipple. This simple15 also contributes to the structure and also to the manufacture of the articulated arm end. The invention results in a more durable and easier-to-manufacture articulated arm end and articulated arm.
    Other features of the invention will be apparent from the appended claims and further advantages that are obtained are listed in the specification.
    In the following, the invention, which is not limited to the following embodiments, will be further described with reference to the accompanying drawings, in which:
    Picture la
    Image of Ib
    Figure le shows an example of the articulation of the articulated arm from the side, shows the articulation view of the articulation arm la from the top, shows an example of a modification of the articulation of the articulation arm of Figure Ib,
    Picture 2 5 Picture 3Picture 4 10 Picture 5 15 Picture 6Picture 7a 20 Picture 7bPicture 8
    illustrates another example of an articulated end of the invention with an articulated ball mounted obliquely viewed thereto, another example of an articulated end of an inventive articulation of parts thereof having a loose end, showing an articulated end of the articulated arm without a ball in one side, showing an articulated head viewed from the other side of the mounting cavity, shows an example of a locking member for attaching the hinged ball mounting cavity cover to the end of the articulated arm, showing the hinged ball mounting cavity cover to the locking members before being mounted, showing the hinged
    20175611 prh 28 -06- 2017 at the mounting hole cover mounting,
    Figures 9a-9d show the steps of installing the articulation ball 25 just at the end of the articulation arm
    Fig. 10 illustrates the principle of dimensioning a mounting cavity for mounting a hinged ball half in Fig. 1a and Ib show an example of an articulated arm of the invention, generally designated by reference numeral 30. An exemplary articulated arm 30 is now more specifically
    20175611 prh 28 -06- 2017 stem 30 '. The drawbar 30 'is intended for a three-point attachment for a work machine such as a tractor. As main structures, the articulation arm 30 includes an elongated arm portion 33, a first end of the arm portion 33 having a ball joint 5 for the sleeve 12 and a coupling member 34 at the other end of the arm portion.
    The arm portion 33 and also the end 10 of the link arm 30 are heat treated or tempered metal pieces.
    In practice, through the ball joint 12 10 disposed at the end 10 of the articulated arm 30, the drawbar 30 'is attached to a work machine, most commonly a tractor, to a mounting pin (not shown) therein. Correspondingly, the coupling members 34 are fitted with a working device whose position and position relative to the working machine is changed by means of a three-point attachment. In Fig. 1a, the coupling members 34 consist of a coupling groove 34 'which enables quick attachment of the implement. The coupling grapple 34 'may be attached to the shaft portion 33, for example by welding. Fig. 1c shows in part another embodiment of the articulated arm 30 of the invention, in which the coupling members 34 are formed by an end 10 belonging to or adapted to the arm part 33 having a ball joint 12. In other words, there are ball joints 12 at both ends.
    The arm portion 33 may further comprise various attachment openings 35 and, if necessary, other members such as a support flange 25 (not shown). In practice, the articulated arm 30 is made of good quality flat steel with machining holes for lifting rods, side stops and other possible members.
    Fig. 2 shows an example of an articulated end 30 of an articulated three-point attachment of a machine tool with ball joint 12 with ball joint 16 mounted therein. Such an end 10 of the articulated arm 30 was fitted to the figures
    20175611 prh 28 -06-2017 to the articulation arm 30. Now, the end 10 of the articulation arm 30 is detached from the articulation arm 30, to which the arm portion 33 may be attached, for example, by welding or otherwise. On the other hand, the end 10 may also be integral with the arm portion 33 without being connected. The end portion 10 of the articulated arm 30 includes a body 18 and a housing 13 for a ball joint 16 fitted thereon. Together, body 18 and housing 13 form a closed loop. In this case, a hinged ball 16 may be provided inside the housing 13 to form a ball joint 12. The ball joint 12 is functionally a bearing. Pe10 weather 13 is illustrated and explained in more detail, for example, in Figures 3
    - 5.
    The body 18 may be said to comprise a housing member 26 and a shell member 27.
    The body portion 26 may be said to include a portion of the body 18 for forming the body 13 for the articulation ball 16. The housing 13 in turn defines sliding surfaces 17 therein. The housing portion 26 includes that portion of the body 18 which forms at the end 10 a transverse and curved housing 13 in the transverse direction of the end 10 of the articulated arm 30 and However, when the housing 13, and in particular its sliding surfaces 17, are formed at the end 10, the housing part 26 of the body 18 is subjected to machining, i.e. machining. Thus, the housing portion 26 may be said to include that portion of the housing 18 remaining in the housing 18 when the housing 13 is formed therein at the end 10 of the finished articulated arm 30. Thus, the body portion 26 includes a portion of the body 18 between the edges of the body portion 26 and the bottom of the sliding surfaces 17 of the body 13, which is highly visible in cross-section in Figure 10.
    20175611 prh 28 -06- 2017
    The remainder of the body 18 of the end 10 of the articulation arm 30 can be said to be part of the shell portion 27. The shell portion 27 is in turn surrounded by the housing portion 26. The shell portion 27, the housing portion 26, and the housing 13 together form a loop on the head 10. The body 18 may also be said to include a fitting portion fitted to one side of the head 10 at the edge of any portion 27
    46. From the connecting member 47 (now the connecting edge) of the connecting member 46, the end 10 of the link arm 30 may be connected to the link member 33 of the link arm 30, for example by welding.
    The effect of the recess 14 on the function or durability of the ball joint 12 is negligible. Preferably, the cavity 14 is disposed within the body 18 such that the part 19, 19 'can be mounted or removed when rotated to a position where the centerline of the through hole 50 is parallel to the plane defined by the opening of the body 18. In practice, the length of the cavity 14 is equal to or greater than the dimension parallel to the through hole 50 of the part 19, 19 '. In this case, the part 19, 19 'fits snugly into the housing 13 while the part 14, 19' is guided by the opening 14, especially during installation.
    Fig. 3 shows another example of the articulated arm 30 end 10 of the invention with its parts now loose at the end 10. Figures 4 and 5 show the articulated arm 30 end 10 without a hinge ball 16 viewed from all sides. The attachment of the end 10 of the articulation25 arm 30 shown in Figures 3-5 to the articulation arm 30 is slightly different from that shown in Figure 2. Now the head 10 is adapted to be connected to a circular articulated arm, such as, for example, a three-point attachment arm. In this case, the connecting member may include an opening having an internal thread for attachment to the end of the arm portion of the handle. Otherwise, the implementation may in principle correspond to the embodiment shown in Figure 2.
    20175611 prh 28 -06- 2017
    As previously mentioned, the housing portion 26 is provided with a housing 13 for a hinged ball 16. Slider surfaces 17 are provided in the housing portion 26 for the articulation ball 16. The sliding surfaces 17 are formed in the housing portion 26 of the body 18 so that the hinged ball 16 mounted in the housing 13 remains in the housing 13 in all situations and positions. Thus, the edges 52 of the housing 13 restrict the access of the articulation ball 16 from the housing 13.
    Thus, the ball joint 12 of the tension arm 30 'has a hub member 26 having a hinged ball 16 and a corresponding sliding surface 17. The hinged ball 16 slides within the hub and thus also the shell member 26, 27 to prevent the hinged ball 16
    The draw bar 30 'fitted to the fixing pin can thus be moved laterally in addition to the height direction. In this case, for example, the distance between two parallel pulling arms 30 'can be changed.
    The hinge ball 16 in the housing 13 is removably mounted preferably in two parts 19, 19 '. For this purpose, a passage 11 is provided at the edge 52 of the sliding surface 17 of the housing 13 for mounting or removing the articulation ball 16 in the housing 13, preferably in two parts, alternately. Passage 11 makes it possible to check the condition of the ball joint and to replace the ball joint 16. Thus, in practice, the parts 19, 19 'together form a hinged ball 16 which will surely remain inside the housing 13 despite the load.
    Nevertheless, a single portion 19, 19 'of the ball joint 16 may be removed from the housing 13, whereby the ball joint 16 may be completely removed. The same principle is, of course, implemented in the articulation of the ball joint 16.
    For attachment to the retaining pin, the articulation ball 16 includes 30 through holes 50 shown in Figures 2 and 3. Each part 19, 19 'of the articulation ball 16 is a spherical body relative to the through hole 50 to form a hemisphere. The parts are symmetrical, which improves their durability and makes them easier to install.
    20175611 prh 28 -06- 2017
    Further, the parts 19 and 19 'are substantially similar to each other, so that their order of installation is insignificant.
    The passage 11 is adapted to extend to the shell portion 27 of the body 18. This provides, for example, significant manufacturing advantages.
    Hereby, the end 10 of the articulated arm 30, and more particularly the access 11, can be manufactured more simply. In addition, the access 11 can then be formed at the end 10 of the articulated arm 30 at an earlier stage of manufacture and also by a more cost-effective production method 10.
    The passage 11 is adapted to form a single recess 14 formed at the edge 52 of the housing 13, which is adapted to extend into the housing portion 27 of the housing 18. The protrusion 14 in the housing portion 27 of the housing 18 is also provided in the thickness direction D of the housing 18. The depth of the cavity 14 may be, for example
    90%, more particularly 30-85% and even more particularly 50-85% of the material thickness D. The material 18 of the body 18 in the direction of the through hole 50 may have a material thickness D of, for example, 36 mm and a thickness of the body 18 at the base 14 . Thus, the depth of the cavity 14 is 27.7 mm, or about 77% of the total thickness D of the body 18. The cavity 14 extends to the shell portion 27 of the body 18 to provide sufficient passage 11 and can only be accomplished by one of when formed, passage 11 also simplifies the construction and manufacture of the end 10 of the articulated arm 30. Further, the material thickness D of the head 10 may be increased in the direction of the through hole 50.
    The location of the recess 14 at the edge 52 of the sliding surface 17 of the housing 13 is disposed at the head 10 so that it is located at least partially on the shaft 33 of the body pivot arm 30, now on the connecting portion 46.
    20175611 prh 28 -06-2017 weakening the articulation arm end 10 because this side of the body 18 has a large material strength for forming the cavity 14. The body 18 of the head 10 is to thicken in the direction of the arm 33 of the link arm 30. In addition, most of the forces 5 exerted on the ball joint 12, for example, are directed away from the arm portion 33 of the link arm 30 so that the load is not applied to the cavity 14 on the side of the arm portion 33.
    The halves 19, 19 'of the hinged ball 16 may be locked, if necessary, through the hole 50 of the hinged ball 16 to the head 10 so that the hemispherical halves 19, 19' do not escape from the housing 13 'is adapted to be locked in the housing 13 via a through hole 50 of the ball of articulation 16 with a removable locking member 51 between removable parts 19, 19'.
    As shown, for example, in Figs. 2 and 4, the passage 11 is adapted to be closed by a lid 15. In Figs. 2 and 4, the lid 15 is mounted on the end 10 of the articulated arm 30; and no dirt can get there. Thus, the sliding surfaces 17 of the housing 13 are also protected. In addition, lubrication of the ball joint 12 can be surprisingly realized through the slot 14 25. Here, too, the cover 15 provides protection and the lubricating grease is better retained in the cavity 14. The cover 15 may be a metal plate piece 28 cut into the shape of the end 10 of the link arm 30 so that it also covers the cavity 14.
    A lubricant assembly 23 may be provided in the cap 15 closing the passage 11 for lubricating the ball joint 12 through the slot 14. In this way, the recess 14 and also the lid 15 are rendered versatile. In the process
    20175611 prh 28 -06- 2017 Avoid forming a separate lubricant assembly on the chassis
    18, which would require machining (drilling) through a thick body 18.
    The lubricant assembly 23 is preferably provided with a grease nipple 22 or the like through which a lubricant such as butter5 can be introduced into the cavity 14 through the lid 15 and act on the articulation ball 16 and the sliding surfaces 17 of the housing 13. 14 holds more lubricant than, for example, occurs through drilling into body 18 in the case of lubricant applied to sliding surfaces 17.
    The cover 15 may include a locking member 20 for attaching the cover 15 of the articulation ball 16 to the end 10 of the link arm 30 to its body 18 and thereby to cover the cavity 14. An example of a locking member 20 is shown in Figs. 3 and 6, where it is loose from end 10 and end to end 10 in Fig. 4 with lid 15 and in Fig. 5 without lid 15. The locking member 20 is now a metal plate body 29, more generally a locking plate. In the center there is an internal threaded opening 40 for the grease nipple 22 (Fig. 20 6). Opposing edges of locking member 20 have locking claws
    24. The locking claws 24 are arranged to press against the inner surface 25 (Figs. 4 and 5) of the hole 14 fitted to the body 18 to engage the lock. This is particularly evident from the inset of Figure 4 and also from Figure 5. The locking claws 24 are now bent tongues 41 at opposite corners of the plate body 29, more generally the locking plate, with relief cuts 42 in the plate body 29 and a stiffening edge 43 between them.
    Fig. 7a shows the top 15 of the mounting hole 14 of the articulation ball 16 with the locking members 20, seen from above, and Fig. 7b after installation. The locking member 20 is fitted
    20175611 prh 28 -06- 2017 to provide deck with 15 form locking. In this case, the locking member 20 is adapted to deform to achieve locking. Figures 7a and 7b further show that, in the case of the embodiment, the locking member 20 is arranged to be actuated by a grease nipple 22 to achieve locking.
    In this case, the locking member 20 remains hidden in the cavity 14 and is always protected from external stress under the cover 15 when the locking is unexpectedly achieved by the grease nipple 22. The cover 15 has an opening for the threaded portion 44 of the grease nip 22 and the lid 15 between.
    Figure 7a shows that the locking member 20 is a slightly bent plate body 29 when mounted with a lid 15 and a grease nipple 22 15 in a cavity 14. The bending may be arranged such that the locking member 20 on the lid side is concave. Thus, the initial length L1 of the locking member 20 allows the locking member 20 to fit into the recess 14. In other words, the claws 41 of the locking member 20 do not substantially correspond to the side walls 25 or at least 20 of the so that it covers the hole 14.
    For example, when the grease nipple 22 is twisted from the shoulder 45 or 25 itself, it straightens the locking member 20 against the inner surface of the cover 15. This situation is illustrated in Figure 7b.
    The grease nip 22 is then applied to the locking member 20 to straighten and press against the opposite side walls 25 of the cavity 14. The locking member 20 is then straightened and extends 30 to its final length L2, which is greater than the initial length L1. As a result of the straightening, the locking claws 41 begin to correspond to the side walls 25 of the cavity 14, pressing against them. The friction between the locking claws 41 and the side walls 25 holds the locking member 20
    20175611 prh 28 -06-2017 in the cavity 14 in place and with it, the lid 15 and the grease nipple 22 attach to the end 10 of the articulated arm 30. This provides a simple solution for attaching the lid 15 to the cavity 14 even without tools by turning the grease nip 22 only.
    When tightening the grease nipple 22, the plate body 29 behind the cover plate 15, also referred to as the holding plate, spreads laterally, gripping the walls 25 of the opening 14. . In addition to the corner nipple grease nipple 22, this version can also be used with the straight nipple grease nipple, i.e. when there is room for lateral greasing.
    Thus, the grease nipple 22 pulls the gripping plate 20 acting as a locking member 20 against the cover plate 28, which acts as a cover 15. The gripping plate is pierced for the thread 44 of the grease nipple 22, whereby the material of the plate body 29 is extruded at the opening 40 20 to provide an internal thread 48 to the plate body 29 long enough for the grease nipple 22.
    Fig. 8 illustrates another embodiment of providing a fastening of the lid 15 of the cavity 14. For example, in this version of the angled ball, the cover plate itself has a gripping nail 41 bent at the edges of the sides going into the threading opening 14. This version is used, for example, when greasing has to be done in the direction of rotation of the loop.
    In addition to the head 10 of the articulated arm 30 described above, the invention also relates to the articulation arm 30 itself, which includes an arm member 33 and at least one articulated arm 30 disposed at least at one end of the arm member 33.
    20175611 prh 28 -06- 2017 end 10 having ball joint 12. At least one end 10 of ball arm 12 having ball joint 12 is in accordance with one of the above exemplary embodiments. The link arm 30 may be, for example, a draw bar 30 ', a draw bar, a lifting bar and / or a si5 strain relief / stabilizer. Generally speaking, any articulation arm of a three-point attachment device, for example.
    In addition to the articulated arm end 10 and the articulated arm 30, the invention also relates to a method for manufacturing a headstock 10 and / or articulated arm 30 of an articulated three-point attachment of a machine tool with a ball joint 10 12. When making the end 10 of the articulated arm 30, either individually or integrated into the articulated arm 30, a housing 13 is formed in the body 18 of the head 10 for a hinged ball 16 with sliding surfaces 17 and into which the hinged ball 16 is removably mounted. Further, one edge 52 of the sliding surface 17 of the body 13 is provided with a passage 11 for mounting or removing the articulation ball 16 in the body 13.
    The passage 11 is formed in the body 18, more generally at the end 20 of the articulated arm 30 substantially prior to the machining steps of the articulated arm end 10, such as machining the sliding surfaces 17 to the housing 13. In this case, the passage 11 It is also possible to form a hole 14 in the blank 10 forming the head 10, such as by printing, for example. The sliding surfaces 17 of the spherical body 13 are then machined into the head 10 after the forging or the corresponding blank manufacturing step and are further processed without substantial cavity formation 14 in the machining step. The invention avoids forming the threading cavity 14 in the main blank from the beginning or mainly by machining.
    This simplifies the provision of passage 11 to the end 10 of the articulated arm 30 when, with the invention, it is no longer required
    20175611 prh 28 -06- 2017 machining to frame 18, as has happened in the past. Thus, fewer work steps remain in the machining step, when the passage 11 can be substantially formed at the end 10 or the articulation arm 30 at an earlier, preform manufacturing stage. Thus, with the invention, it becomes possible, for example, to produce forged articulated shaft ends 10, i.e. loops, into which the spherical halves 19, 19 'can be threaded in place by means of a forging 14.
    In addition, the ball 16 need not be pressed into the ball seat 13, as is conventionally done in the manufacture of loops. Furthermore, since the ball 16 is not pressed into the ball seat 13, the head 10 can be hardened and resistant to wear after the machining step of the ball seat 13.
    Figures 9a-9d illustrate the formation of a ball joint 12 according to the invention, i.e. a stepwise mounting of a hinged ball 16 at the end 10 of the hinged arm 30. Figure 9a shows a situation where the first portion 19 of the hinged ball 16 is inserted into The portion 19 is introduced through the hole 14 into the housing 13 with its wider end facing the side 20 of the articulated arm end 10 on which the recess 14 at the end 10 rests. In this position, the body 18 closes the through hole 50 of the first portion 19 at the narrower end of the first portion 19. In the mounting, the first half 19 is moved in this position with its spherical surface upstream of the hole 14 towards the housing 13, followed by the portion 19 into the housing 13. The first portion 19 is housed within the housing 18 and displaced along the through hole 50 of portion 19 13 to the opposite side relative to where the cavity 14 is located
    been. Here so it moves on the nest 13 column 14 split 30 away. this the situation is presented picture 9b. Here nest 13th status, which is directly into column 14 in front, is empty next
    for mounting part 19 '.
    20175611 prh 28 -06- 2017
    Next, the second part 19 'of the hinged ball 16, like the first part 19, can be mounted inside the body 18. Hereby again, the part 19 'is introduced through the opening 14 into its sphere above the housing 13.
    However, now the part 19 'is facing opposite to the first part 19, i.e. its wider side points to the wider side of the first part 19 already installed. In this position, the body 18 closes the second portion 19 'through the through hole 50 at the narrower end of the second portion 19. Fig. 9c shows a situation where another part 19 'is introduced into the housing 13 immediately after installation.
    With both parts 19, 19 'inside body 18 in housing 13 as shown in Figure 9c, the resulting articulation ball 16 can be rotated to position 9d, locked in parts 19, 19' by locking member 51, and then mounted on cover 15 with any grease nipples 22. The through hole 50 is then transverse to the longitudinal axis of the link arm 30.
    The removal of the hinged ball 16 is performed in the reverse order. Before fitting the end 10 of the articulated arm 30 to the articulated arm 30, the cavity 14 is closed by a lid 15 and locked by a locking member 20.
    If the head 10 is mounted on the shaft 33 by welding, the ball joint 12 can be lubricated through the grease nipple 22 only after welding. Also, the ball 16 itself can only be assembled after welding.
    Figure 10 illustrates the principle of dimensioning a mounting recess 14 for mounting a hinge ball 19, 19 'of a hinged ball 12. As can be seen in the sectional view, the cavity 14 extends to the shell portion 27 in the body 18 of the end 10 of the articulated arm 30. If the portion 19, 19 'of the articulating sphere 16 has a dimension from the center to the sphere surface
    R30, then the dimension from the bottom of the hole 14 to the edge 52 of the housing 13 is then
    60. The bottom of the cavity 14 is also bevelled.
    Examples are the aforementioned flat steel link 30, more particularly the draw bar 30 '. However, the cross-sectional shape of the arm 33 may vary within wide limits and may be, for example, square, circular, rectangular or elliptical. The articulated arm may also be telescopically extendable in a known manner.
    The invention was described above with reference to a separate end of the articulated arm 30. Equally, the end 10 10 of the articulated arm 30 of the invention may also be directly integrated into the arm portion 33 without attaching a separate end 10 to the end of the arm portion 33 to form the articulated arm 30.
    It is to be understood that the foregoing description and the accompanying drawings are intended only to illustrate the present invention. Thus, the invention is not limited to the embodiments set forth above or as defined in the claims, but many variations and modifications of the invention which are possible within the scope of the inventive concept defined in the appended claims will be apparent to those skilled in the art.
    权利要求:
    Claims (17)
    [1]
    1. The end of the articulated arm of the three-point attachment of the implement, including:
    5 - a body (18) having a housing portion (26) and a shell portion (27) around it,
    - a housing (13) arranged on the housing part (26) of the body (18) for a hinged ball (16), into which the hinged ball (16) can be detachably mounted, preferably in two parts (19, 19 '),
    - sliding surfaces (17) fitted to the housing part (26),
    - a passage (11) arranged on the edge (52) of the sliding surface (17) for mounting or removing the hinged ball (16) from the housing (13),
    15, characterized in that the passage (11) is arranged to extend into the shell part (27) of the body (18).
    [2]
    End joint according to claim 1, characterized in that the passage (11) is arranged to form a housing (13).
    A single recess (14) formed at the edge (52) and adapted to extend into the shell portion (27) of the body (18).
    [3]
    Articulated arm end according to claim 2, characterized in that the recess (14) is arranged in the thickness direction of the body (18)
    25 (D) extending into the area of the sliding surfaces (17).
    [4]
    End joint according to claim 2 or 3, characterized in that the recess (14) has a depth of 10 to 90% of the thickness (D) of the body (18).
    [5]
    Articulated arm end according to one of Claims 2 to 4, characterized in that the recess (14) is arranged in the head (10) at least
    20175611 prh 28 -06-2017 partially to the body portion (46) of the articulated arm (30) on the side of the shaft (33).
    [6]
    The articulated arm end of any one of claims 1-5,
    5, characterized in that the passage (11) is arranged to be closed by a cover (15).
    [7]
    The end of the articulated arm according to claim 6, characterized in that the cover (15) closing the passage (11) is fitted with a
    The grease assembly (23) for lubricating the ball joint (12) and the grease assembly (23) is preferably provided with a grease nipple (22) or the like.
    [8]
    The articulated head of claim 6 or 7,
    15. The cover (15) comprises a locking member (20) having opposing edges with locking claws (24) arranged to press against the inner surface (25) of the recess (14) fitted to the body (18).
    20
    [9]
    The end of the articulated arm according to claim 8, characterized in that the locking member (20) is arranged to provide a form-locking lock.
    [10]
    The articulated arm end of any one of claims 8 or 9,
    25, characterized in that the locking member (20) is arranged to be actuated by a grease nipple (22) to provide locking.
    [11]
    Articulated arm end according to one of Claims 1 to 10, characterized in that the parts (19, 19 ') forming the joint ball (16)
    30 is arranged to be locked in the housing (13) by a locking member (51) removably mounted between the parts (19, 19 ') through the through hole (50) of the articulated ball (16).
    20175611 prh 28 -06- 2017
    [12]
    12. Articulated arm including
    - the shaft part (33),
    - at least one end (10) of the articulated arm (30) fitted to the arm portion (33) and provided with a ball joint (12),
    5, characterized in that at least one end (10) of the articulated arm (30) having a ball joint (12) is in accordance with claim 1.
    [13]
    The articulated arm of claim 12, characterized in that:
    10, wherein the end (10) of the articulated arm (30) is in accordance with one or more of claims 2 to 11.
    [14]
    Articulated arm according to claim 12 or 13, characterized in that the articulated arm (30) is at least one of the following:
    [15]
    15 arms (30 '), drawbar, lifting bar and / or side stop.
    A method for manufacturing a head and / or articulated arm of a three-point attachment of a work machine with a ball joint, wherein the end (10) of the articulated arm (30)
    [16]
    20 - forming a housing (13) for the articulation ball (16) with sliding surfaces (17) in which the articulation ball (16) is removably mounted in two parts (19, 19 '),
    - arranging one of the sliding surfaces (17) of the housing (13)
    [17]
    A passage (11) for inserting or removing a hinged ball (16) into the housing (13), characterized in that the passage (11) is formed on the head (10) substantially prior to the machining steps of the articulated arm end (10). , such as forging, shoveling, or adding material.
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    同族专利:
    公开号 | 公开日
    FI127984B|2019-06-28|
    FI20175611A|2018-12-29|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    FI20175611A|FI127984B|2017-06-28|2017-06-28|End of an articulated arm with a ball joint for three-point attachment in a work machine and articulated arm|FI20175611A| FI127984B|2017-06-28|2017-06-28|End of an articulated arm with a ball joint for three-point attachment in a work machine and articulated arm|
    FIU20184127U| FI12163U1|2017-06-28|2018-06-26|Articulated arm head with a ball joint for the three-point hitch of a work machine, and articulated arm|
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