• 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 a bearing cap (3) made of a sintered material for a split bearing arrangement (1). Between bolt receptacles (10) for receiving bolts for connecting the bearing cap (3) with a bearing block (2), a stiffening element (16) is formed. Between two clamping surfaces (7) is a first radially inner bearing receiving surface (4) with at least approximately circular arc-shaped in the axial direction (13) formed cross-section. Subsequent to the bearing receiving surface (4) and the cross-sectional profile of the bearing receiving surface (4) following on the stiffening element (16) a reinforcing web (19) is arranged, which has a perpendicular to the bearing receiving surface (4) considered varying height (20), wherein the largest Height (20) in the range of half angular coverage of the bearing receiving surface (4) is formed. The reinforcing web (19) has a maximum height (20) between 20% to 70% of the maximum height (22) of the bearing cap (3) over the bearing receiving surface (4). The minimum width (23) of the stiffening element (16) in the axial direction (13) is smaller than the maximum width (24) of the bearing cap (3) in the region of the threaded bolt receptacles (10).
    公开号:AT519606A1
    申请号:T50073/2017
    申请日:2017-02-02
    公开日:2018-08-15
    发明作者:
    申请人:Miba Sinter Austria Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a bearing cap for a split bearing assembly which includes a bearing block next to the bearing cap, wherein the bearing cap has clamping surfaces which rest in the assembled state of the bearing assembly on counter-clamping surfaces of the bearing block, to the bolt receptacles for receiving bolts for connecting the bearing cap to the bearing block connect, between which a stiffening element is formed, wherein between the two clamping surfaces, a first radially inner bearing receiving surface is formed with viewed in the axial direction at least approximately kreisbogenförmigem cross-section.
    Furthermore, the invention relates to a bearing assembly with a bearing cap and an adjacent bearing block.
    For weight reduction of bearing caps of split bearing assemblies has been proposed in the prior art, such as DE 60 2004 001 249 T2, to make material changes, i. To use light metal alloys.
    However, constructive solutions to this weight issue have also been proposed. Thus, US 2004/264822 A1 describes a bearing cap for a crankshaft bearing of an internal combustion engine with a bearing shell, two laterally arranged the bearing shell screw pipes for attachment to a bearing block and extending between the two screw pipes stiffening of the bearing shell, wherein the stiffening of two obliquely from Area of the upper ends of the screw pipes extending to the bearing shell, on its length a substantially constant cross-section having struts and a rib which extends at the top of the bearing shell from one strut to the other. Similar structurally released weight reduced bearing caps are known from US 1,283,803 A, US 2,997,347 A, US 4,693,216 A and DE 100 26 216A1.
    Object of the present invention was to provide a weight-reduced bearing cap for a split bearing assembly and a weight-reduced split bearing assembly available.
    The object is achieved by the bearing cover mentioned above, in which subsequent to the bearing receiving surface and the cross-sectional profile of the bearing receiving surface following the reinforcing element, a reinforcing web is arranged, which has a perpendicular to the Lageraufnahefläche considered varying height, wherein the largest height in the range of half angle cover the bearing receiving surface is formed.
    The object of the invention is also achieved by the bearing arrangement, in which the bearing cap is designed according to the invention.
    The advantage here is that with this bearing cover a better distribution of the introduced into the material of the bearing cap tension when clamping with the bearing block can be achieved, whereby a reduction of the stresses occurring in the bearing cap after clamping together with the bearing block can be made possible. It is thus possible to produce a weight-reduced bearing cap with a powder metallurgical process, whereby a corresponding cost advantage can be realized.
    To further improve the said stress distribution or stress reduction, it can be provided that the reinforcing web is also formed above the clamping surfaces.
    In order to avoid stress cracks better, it can be provided that a transition of the reinforcing web above the clamping surfaces on the reinforcing web above the bearing receiving surface is provided with a rounding. It is thus also a better demolding of the bearing cap from the mold for the sintered powder, from which the bearing cap can be made achievable.
    It can further be provided that a transition from the clamping surfaces in the bearing receiving surface is formed chamfered. It can also better prevent the formation of cracks as a result of overpressing the sintered powder.
    According to a further embodiment of the bearing cap can be provided that the stiffening element is formed in regions with a thickening. By this thickening of the material, the stiffening element can be made thinner in the remaining areas, whereby further weight reduction can be achieved.
    Also to achieve a further weight reduction of the bearing cap can be provided that in the stiffening element is formed at least one recess.
    A further reduction in weight of the bearing cap can be achieved if the clamping surfaces viewed in cross-section are at least approximately trapezoidal. In addition, can be improved with this embodiment, the sintering manufacturability of the bearing cap, since this is better ent-formable.
    It may further be provided, at least one of a plurality of end faces is inclined to the vertical. In addition to the weight reduction of the bearing cap so that the demolding of the Lagerdeckelgrünlings can be improved from a press die.
    For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
    Each shows in a simplified, schematic representation:
    1 shows a cross section through a split bearing assembly.
    2 shows a bearing cap in an oblique view.
    Fig. 3 shows the bearing cap of Figure 2 in side view.
    Fig. 4 shows the bearing cap of Figure 2 in plan view.
    5 is a plan view of a clamping surface of the bearing cap.
    6 shows a detail of a variant of the bearing cap;
    7 shows another variant of the Lagerdeckesl in side view.
    Fig. 8 shows a detail of a further embodiment of the bearing cap in the region of a clamping surface.
    By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosures contained in the entire description can be mutatis mutandis to the same parts with the same reference numerals or component names. Also, the location information chosen in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and to transmit mutatis mutandis to the new situation in a change in position.
    Information in this description of standards refers to the version of these standards which is valid at the filing date of the application in question, unless expressly stated otherwise.
    Fig. 1 shows a split bearing assembly 1, as used for example in a machine housing of a reciprocating engine. This bearing assembly 1 comprises a bearing block 2 and a bearing cap 3, which together provide a first and a second bearing receiving surfaces 4, 5 for receiving a sliding bearing 6, for example for supporting a crankshaft. The plain bearing 6 may be formed for example by two half shells or a socket. But it is also the direct coating of the bearing receiving surfaces 4, 5 possible with a sliding bearing material.
    The bearing receiving surfaces 4, 5 are formed by radially inner surfaces of the bearing block 2 and the bearing cap 3, which surrounds an opening for receiving the component to be stored.
    The bearing cap 3 has at its two distal end regions in each case a clamping surface 7 and the bearing block 2 at its two end regions in each case the clamping surfaces 7 opposite counter-clamping surfaces 8, which bear against each other in the assembled state of the bearing assembly 1. Projecting beyond the clamping surfaces 7 can be arranged on each of these at least one projection 9 per clamping surface 7, which is pressed in the assembled state of the bearing assembly 1 in the counter-clamping surface 8 of the bearing block 2 by the clamping of bearing block 2 and bearing cap 3. For the tensioning of the bearing block 2 with the bearing cap 3, a continuous stud receptacle 10, for example a bore, is arranged in the distal end regions. In this bolt receptacle 10 is a not-shown bolt its recording and is achieved with appropriate nuts, the bias. Alternatively, also in the bearing block 2 or in the bearing cap 3, this bolt receptacle 10 may not be performed continuously, but as a blind hole with an internal thread.
    The projections 9 may be formed, for example, approximately bone-shaped or strip-shaped, with a longitudinal extent in the direction of a front side 11 on a rear side 12 of the bearing cap 3 (ie in an axial direction 13) as shown in FIG. 5, which is a plan view of a the clamping surfaces 7 of the bearing cap 3 shows. The projections 9 preferably have a central region 14, which is made thinner compared to the two end regions 15.
    As can be seen further from FIG. 5, different projections 9 can also be arranged on a clamping surface 7, for example a broad projection 9 and one or two or more thinner projections 9 in comparison thereto, whereby in this case too, all projections 9 are preferably "bone-shaped Are formed, as stated above. In this embodiment, the said wider projection 9 is preferably arranged closer to the bearing receiving surface 5 of the bearing cap 3 in comparison to the other projections 9.
    The wider projection 9 is more preferably on one side of the bolt receptacle 10 and the one or more relatively thinner projections 9 are preferably arranged on the other side of the bolt receptacle 10. In other words, the threaded bolt receptacle 10 is preferably arranged between the wider and the one or more, compared to thinner projections 9.
    But it can also be differently shaped projections 9 are arranged, for example, blade-like, as these are known from US 8,690,439 B2, wherein also shape combinations are possible, that is, for example, the bone-shaped projections 9 may be formed like a blade. Preferably, however, the described bone-shaped projections 9 are provided.
    The projections 9 are further preferably formed integrally with the rest of the bearing cap 3.
    There is also the possibility, as indicated by dashed lines in Fig. 1, that the distal end portions of the bearing cap 3 in the direction of the bearing block 2 and these are formed laterally across, or conversely that the bearing block 2 the bearing cap 3 is arranged laterally across.
    Likewise, the projections 9 may also be formed on the counter-clamping surfaces 8 of the bearing block 2, wherein the exclusive arrangement on the clamping surfaces 7 of the bearing cap 3 is preferred.
    At least the projections 9 are made of a material which is harder than the material of the bearing block 2 in the region of the counter-clamping surface 8, so that these projections 9 can be pressed by the compression and clamping of the bearing block 2 and bearing cap 3 in the counter-clamping surface 8. Preferably, however, the entire bearing cap 3 is made of this harder material. For example, the bearing cap 3 can be made of a ferrous material and the bearing block 2 made of a light metal. In particular, the bearing cap 3 is made of a sintered iron material.
    Generally, the bearing cap 3 is preferably made of a sintered material by a powder metallurgy process.
    The first radially inner bearing receiving surface 4 of the bearing cap 3 and the second radially inner bearing receiving surface 5 of the bearing block 2 are arranged between the clamping surfaces 7 of the bearing cap 3 and the counter-clamping surfaces 8 of the bearing block 2. They are each formed with a viewed in the axial direction 13 arcuate, in particular semi-circular arc-shaped, cross-section.
    As better seen in FIGS. 2 and 3, a stiffening element 16, in particular web-shaped, is formed between the two threaded bolt receptacles 10 of the bearing cap 3. The stiffening element 16 forms at least part of the first radially inner bearing receiving surface 4. It can further be provided that the stiffening element 16 has a central elevation 17, which projects beyond the clamping surfaces 7 opposite end surfaces 18 in the direction of a height of the bearing cap 3. The height of the bearing cap 3 is measured perpendicular to the clamping surfaces 7. But it is also possible that instead of the central elevation 17, a recessed central region is formed or that this central region is formed planar with the end surfaces 18.
    In particular, the stiffening element 16 is formed integrally with the rest of the bearing cap 3.
    Following on from the first radially inner bearing receiving face 4 of the bearing cover 3 and the cross sectional profile of this bearing receiving face 4, viewed in the axial direction 13 (FIG. 1), a reinforcing web 19 is arranged or formed on this reinforcing element 16, in particular integrally with the remainder of the bearing cap third
    As best seen in FIG. 3, it is provided that this reinforcing web 19 has a varying height 20 which is perpendicular to the first radially inner bearing receiving surface 4. In this case, the reinforcing web 19 has its greatest height 20 in the region of the half angle cover, in particular at the exact location of the half angle cover, the first radially inner bearing receiving surface 4. With an extension of the first radially inner bearing receiving surface 4 over 180 °, the reinforcing web 19 thus has its greatest height at 90 °, as is the case in the embodiment of the bearing cap according to FIG. However, the first radially inner bearing receiving surface 4 does not necessarily have to extend beyond 180 °.
    The height 20 of the reinforcing web 19 is always measured perpendicular to the first radially inner bearing surface 4.
    In the preferred embodiment, the reinforcing web 19 projects in the axial direction 13 via the stiffening element 16, as best seen in FIG. 4. But it is also possible that alternatively or additionally, the reinforcing web 19 has a higher density or compression compared to the stiffening element 16, so that the reinforcing web 19 may optionally also be formed flush with the stiffening element 16.
    4, at least one reinforcing web 19 are respectively formed and arranged on both axial end faces 21 of the reinforcing element 16, which are configured as described above, ie the greatest height 20 (FIG. 3) in the region of the half angle cover the first radially inner bearing surface 4 have.
    Preferably, the two reinforcing webs 19 are identical. However, they can also have a mutually different shape or geometry, as long as the described construction of the height 20 (FIG. 3) is realized in both.
    The following embodiments can be applied to both with reinforcing webs 19 arranged on both sides, even if only one reinforcing web 19 is described.
    Preferably, the reinforcing web 19 has a symmetrical course, i. the height 20 (FIG. 3) decreases from the half angle cover of the first radially inner bearing receiving surface 4 on the left and right by the same value. Thus, the reinforcing web 19 its lowest height 20 each in the region of the beginning of the bearing receiving surface 4, ie in the region of the transition from the clamping surface 7 (Fig. 3) on the bearing surface 4, on.
    The reinforcing web 19 may have a maximum height 20 selected from a range of 20% to 70%, in particular 30% to 60%, a maximum height 22 (FIG. 3) of the bearing cap 3 above the bearing receiving surface 4. The smallest height 20 may be selected from a range of 5% to 50%, in particular 10% to 40% of the maximum height 20.
    Preferably, the reinforcing web 19 extends uninterruptedly over the entire circumference of the first radially inner bearing receiving surface 4. However, there is also the possibility that the reinforcing web 19 is formed interrupted, for example, when higher density regions are formed in the reinforcing web 19. The higher density refers to areas of the reinforcing web 19 with lower density compared to it.
    The arrangement or design of the reinforcing web 19 makes it possible for a minimum width 23 (FIG. 4) of the reinforcing element 16 in the axial direction 13 to be smaller than a maximum width 24 of the bearing cap 3, which is formed in the area of the bolt receptacles 10 , In other words, the stiffening element 16 is formed with respect to the Schraubbolzenaufnahmen 10 viewed in the axial direction 13 as jumping back, as can be seen from the top view of the bearing cap 3 in Fig. 4. It is thus possible to produce the bearing cap 3 with a lower weight, compared with bearing caps 3, which do not have such recesses.
    The minimum width 23 may be selected from a range of 5% to 95%, in particular from a range of 20% to 75%, the maximum width 24 of the bearing cap third
    The region with the minimum width 23 preferably extends over at least 20%, in particular at least 30%, preferably at least 50%, of an overall length 25 of the bearing cap 3 in the direction parallel to the clamping surfaces 7 and perpendicular to the axial direction 13.
    Furthermore, it is preferably provided that the transition from the area of the screw bolt receptacles 10 to the region of the stiffening element 16 with the minimum width 23 does not occur abruptly, as can be seen from FIG. 4.
    It is also preferred that the transition from the reinforcing web 19 to the axial end face 23 of the stiffening element 16 is not formed abruptly. In particular, this transition may be formed with a rounding.
    According to a further embodiment of the bearing cap 3 can be provided, the reinforcing web 19 is also formed above the clamping surfaces 7, as can be seen for example in FIG. In this case, the reinforcing web 19 can extend over only a partial region of a length 26 (FIG. 3) of the clamping surfaces 7 in the direction of the overall length 25 (FIG. 4) of the bearing cap 3, as shown in solid lines in FIG the entire length 26 of the clamping surfaces 7, as indicated by dashed lines in Fig. 2. If the reinforcing web 19 extends only over a portion of this length 26 of the clamping surfaces 7, it may be formed projecting, as shown in FIGS. 2 to 4. In particular, the reinforcing web 19 may be formed extending up to the level of the longitudinal middle axis by the bolt receptacles 10.
    It is further preferred if a transition of the reinforcing web 19 above the clamping surfaces 7 on the reinforcing web 19 above the first radially inner bearing receiving surface 4 of the bearing cap 3 with a rounding 27 (Fig. 3) is provided.
    As can be seen from FIGS. 2 and 4, regions 28 can also be formed around the bolt receptacles 10 above the clamping surfaces 7, also set back, whereby an additional weight reduction of the bearing cap is possible.
    According to another embodiment, u.a. be provided for further weight reduction of the bearing cap 3, that a transition 2 is tapered from the clamping surfaces 7 in the first radially inner bearing receiving surface 4 of the bearing cap 3 or provided with a rounded portion 29, as shown in Fig. 6
    It may further be provided that the stiffening element 16 is formed in regions with at least one, in particular only one, thickening 30. The thickening 30 may be web-shaped. Furthermore, the thickening 30 can be arranged or formed to extend perpendicular to the clamping surfaces 7 of the bearing cap 7 or parallel to the threaded bolt receptacles 10. Preferably, in turn, a transition from this thickening 30 on the axial end face 21 of the stiffening element 13 is not formed jumped, but for example provided with a chamfer and / or a rounding. With the thickening 30, it is possible to further reduce the minimum width 23 (FIG. 4) of the stiffening element 13 in the axial direction 13. The thickening may have a width 31 (FIG. 2) in the direction of the overall length 25 (FIG. 4) of the bearing cap 3, which is selected from a range of 2% to 10% of the total length 25 of the bearing cap 3.
    Preferably, the thickening extends continuously from the reinforcing web 19 starting to an upper, the clamping surfaces 7 at least approximately in the direction of maximum height 22 (Fig. 3) opposite end face 32 (Fig. 2) of the bearing cap 3. With at least approximately while the fact is addressed in that the bearing cap 3 can have a central elevation 17 (Figure 2), and thus the upper end surface 7 is not necessarily completely parallel to the clamping surfaces, as can be seen, for example, from Figure 3.
    A further embodiment of the weight reduction of the bearing cap 3 may provide that at least one recess 33 is formed in the stiffening element 13 of the bearing cap 3, as can be seen from FIG.
    The recess 33 may be formed as an elongated blind hole starting in the upper end face 32 of the bearing cap, as shown in Fig. 7. The recess 33 may also have a different geometry.
    According to another embodiment variant of the bearing cap 3, it can be provided that the clamping surfaces 7, viewed in cross-section, are at least approximately trapezoidal, as shown in FIG. 8. In this case, as shown in solid lines, the entire clamping surface 7 have a trapezoidal cross-section. But it is also possible that the clamping surface 7 has this trapezoidal cross section only in a partial area, and the rest of the clamping surface, for example, has a rectangular cross-section, as indicated by dashed lines in Fig. 8. Preferably, the short base side of the trapezoid, as shown, is arranged in each case at the outer end of the clamping surfaces 7.
    According to a further embodiment variant of the bearing cap 3, it can be provided that at least one, in particular a plurality, preferably all, end surface 34) has a conical shape, as shown in dashed lines in FIG. The conicity is formed so that the bearing cap 3 tapers in the direction of the upper end face 32. In this case, in each case at least one of the lateral end faces 32 (left and right end face 32 in FIG. 7) and / or at least one of the two axial end faces 32 (front and rear end face in FIG. 7) can be configured conically. It can thus be improved the demoldability of Lagerdeckelgrünlings from the press die. The inclination angle of the end face (s) 34 to the perpendicular may be selected from a range of 2 ° to 15 °. Preferably, the angle of inclination is selected from a range of 10 ° to 15 °, as this allows the self-locking can be overcome.
    The embodiments show possible embodiments, it being noted at this point that combinations of the individual embodiments are also possible with each other.
    For the sake of order, it should finally be pointed out that for a better understanding of the construction of the bearing cap 3, this was not necessarily shown to scale.
    REFERENCE SIGNS LIST 1 Bearing arrangement 31 Width 2 Bearing seat 32 End face 3 Bearing cover 33 Recess 4 Bearing surface 34 End face 5 Bearing surface 6 Slide bearing 7 Clamping surface 8 Counter clamping surface 9 Projection 10 Bolt seat 11 Front 12 Rear 13 Axial direction 14 Center region 15 End region 16 Reinforcement element 17 Center elevation 18 End surface 19 Reinforcing web 20 Height 21 Face 22 Maximum height 23 Width 24 Width 25 Overall length 26 Length 27 Rounding 28 Area 29 Rounding 30 Thickening
    权利要求:
    Claims (9)
    [1]
    claims
    1. Bearing cover (3) for a split bearing assembly (1) in addition to the bearing cap (3) comprises a bearing block (2), wherein the bearing cap (3) clamping surfaces (7), in the assembled state of the bearing assembly (1) on counter-clamping surfaces Abut (5) of the bearing block (2), to the screw bolt receptacles (10) for receiving bolts for connecting the bearing cap (3) with the bearing block (2) connect, between which a stiffening element (16) is formed, wherein between the two Clamping surfaces (7) a first radially inner bearing receiving surface (4) with at least approximately circular arc-shaped in the axial direction (13) formed cross-section, characterized in that subsequent to the bearing receiving surface (4) and the cross-sectional profile of the bearing receiving surface (4) following on the stiffening element ( 16) a reinforcing web (19) is arranged, which has a perpendicular to the bearing receiving surface (4) considered varying height (20), wherein the largest height (20) is formed in the region of half the angular coverage of the bearing receiving surface (4).
    [2]
    Second bearing cap (3) according to claim 1, characterized in that the reinforcing web (19) is also formed above the clamping surfaces (7).
    [3]
    3. bearing cap (3) according to claim 2, characterized in that a transition of the reinforcing web (19) above the clamping surfaces (7) on the reinforcing web (19) above the bearing receiving surface (4) with a rounding (29) is provided.
    [4]
    4. bearing cap (3) according to one of claims 1 to 3, characterized in that a transition from the clamping surfaces (7) in the bearing receiving surface (4) is formed chamfered.
    [5]
    5. bearing cap (3) according to one of claims 1 to 4, characterized in that the stiffening element (16) is formed in regions with a thickening (30).
    [6]
    6. bearing cap (3) according to one of claims 1 to 5, characterized in that in the stiffening element (16) at least one recess (33) is formed.
    [7]
    7. Bearing cover (3) according to one of claims 1 to 6, characterized in that the clamping surfaces (7) viewed in cross section are at least approximately trapezoidal.
    [8]
    8. bearing cap according to one of claims 1 to 7, characterized in that at least one of a plurality of end faces (34) is inclined to the vertical.
    [9]
    9. bearing arrangement (1) with a bearing cap (3) and an adjacent bearing block (2), characterized in that the bearing cap (3) according to one of claims 1 to 8 is formed.
    类似技术:
    公开号 | 公开日 | 专利标题
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    同族专利:
    公开号 | 公开日
    US20180216668A1|2018-08-02|
    DE102018000469A1|2018-10-11|
    US10253816B2|2019-04-09|
    BR102018001538A2|2018-12-04|
    AT519606B1|2018-11-15|
    CN108386451A|2018-08-10|
    CN108386451B|2020-12-04|
    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50073/2017A|AT519606B1|2017-02-02|2017-02-02|bearing cap|ATA50073/2017A| AT519606B1|2017-02-02|2017-02-02|bearing cap|
    US15/872,143| US10253816B2|2017-02-02|2018-01-16|Bearing cover|
    DE102018000469.5A| DE102018000469A1|2017-02-02|2018-01-22|bearing cap|
    BR102018001538-9A| BR102018001538A2|2017-02-02|2018-01-24|bearing cover and bearing arrangement|
    CN201810103995.2A| CN108386451B|2017-02-02|2018-02-02|Support cover|
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