• 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 connecting rod (10) for large engines, wherein the connecting rod (10) is formed in several parts and a connecting rod shank part (12) of a large Pleuelaugenteil (14) in the region of the rod shank (13) is separated. The dividing plane (26) between the connecting rod shank portion (12) and the large connecting rod portion (14) extends parallel to the connecting rod longitudinal axis (28), the connecting rod shank portion (12) and the large connecting rod portion (14) in an overlapping region of the connecting rod shank portion (12) and the large Pleuelaugenteils (14) via flange surfaces (12a, 14a) are interconnected. Between the connecting rod stem part (12) and the large connecting rod part (14) a single dividing plane (26) is formed. The flange surfaces (12a, 14a) are offset from the connecting rod longitudinal axis (28). The transitional portion (12b) of the connecting rod shaft portion (12) to the offset flange surface (12a) of the connecting rod shaft portion (12) is formed by a chamfer. The connecting rod shank portion (12) is viewed from the large connecting rod portion (14) in the direction of the connecting rod longitudinal axis (28) in the region of the transition region (12b) from the connecting rod shank portion (12) to the offset flange surface (12a) of the connecting rod shank portion (12) and the transition area (12). 14b) from the large Pleuelaugenteil (14) to the offset flange surface (14a) of the large Pleuelaugenteils (14) exempted.
    公开号:AT513297A1
    申请号:T503742012
    申请日:2012-09-11
    公开日:2014-03-15
    发明作者:Gerhard Ing Maier；Wolfgang Ing Kling
    申请人:Avl List Gmbh；
    IPC主号:
    专利说明:

    1 56483
    The invention relates to a connecting rod for large engines, wherein the connecting rod is formed in several parts and a connecting rod stem part is separated from a large Pleuelaugenteil in the rod shaft, the dividing plane between the connecting rod stem part and the large Pleuelaugenteil parallel to the connecting rod longitudinal axis and wherein the connecting rod stem part and the large Pleuelaugenteil in an overlapping portion of the connecting rod shaft portion and the large Pleuelaugenteils are connected to each other via flange.
    In large engines usually three-piece connecting rods are used, the connecting rod shaft is separated from the large connecting rod. The division of the connecting rod shaft from the large connecting rod eye is generally normal to the connecting rod longitudinal axis above the large connecting rod eye ("horizontal Marineteilung"). As a result, in service activities on the piston, the connecting rod upper part can be removed or installed together with the piston through the bore of the cylinder liner. In the future, internal combustion engines with ever higher ignition pressures will increasingly be used in large engines. However, with the firing pressures, the dimensions of the " horizontal " Connecting rod pitch (flange dimensions and
    Screw dimensions). This has the disadvantage that the " horizontal " Flange of the connecting rod upper part is no longer expandable through the cylinder liner bore.
    From GB 412 969 A a constructed connecting rod is known, wherein the connecting rod shaft is separated from the connecting rod eye. The connecting rod eye is formed by two parts, wherein the rod shaft between the two fork-like arranged large Pleuelaugenteilen arranged and connected by bolts or rivets with these. The two large Pleuelaugenteile are spaced apart in the region of the crank pin, wherein between the Pleuelaugenteilen a large connecting rod of another connecting rod is arranged, which acts on the same crank pin. The dividing planes between the rod shank part and the two large connecting rod parts are arranged on both sides of the connecting rod longitudinal axis. This is a special solution for an internal combustion engine in which act on a crank pin two connecting rods. 2/18 2
    Such a pitch parallel to the connecting rod longitudinal axis is also called " vertical " Marineteilung called.
    The object of the invention is to provide a constructed connecting rod, wherein the rod shank part is separated from the large connecting rod part and with which high ignition pressures can be realized.
    According to the invention, this is achieved in that a single dividing plane is formed between the connecting rod shaft part and the large connecting rod part.
    It is preferably provided that the dividing plane is arranged in the region of the connecting rod longitudinal axis, wherein preferably the connecting rod longitudinal axis extends in the parting plane. This can be avoided that bending moments are introduced into the connecting rod. The flange surfaces are advantageously arranged offset to the connecting rod longitudinal axis, wherein preferably the offset is formed by a gradation, a radius of curvature and / or a chamfer. The connecting rod shaft part and / or the large connecting rod part may be tapered in the region of the flange surface.
    In order to facilitate the assembly and to reduce thermal stresses between the assembled parts, it is advantageous if the connecting rod shaft part of the large Pleuelaugenteil - viewed in the direction along the connecting rod longitudinal axis - is released in the region of the offset.
    Particularly high ignition pressures can be achieved if the connecting rod shaft part and the large connecting rod part are non-positively and positively connected to each other, preferably between flange surfaces of the connecting rod shaft portion and the large Pleuelaugenteils formed by two corresponding positive locking elements form-fitting connection, wherein at least one positive locking element arranged on at least one flange is. A first positive-locking element can be formed, for example, by at least one recess in a flange surface into which engages a corresponding second positive-locking element of the other flange surface. 3/18 3
    For example, the positive connection may be formed by a toothing of the flange surfaces between the connecting rod shaft part and the large connecting rod part. The division plane can be defined by a median plane of the toothing. The positive connection allows relief of the fasteners formed by screws or rivets, so that the shear forces acting on the screws or rivets can be reduced.
    It is particularly advantageous if the connecting rod parts are connected by passbond screws, preferably by four keybear bolts. Due to their bolt shank, which is partly designed as a passport fitting, the dowel bolts enable a precisely defined installation position and thus facilitate assembly.
    By the " vertical " Marineteilung in the direction of the connecting rod longitudinal axis of the connecting rod shank is divided over the large eye, the dimensions of the Teilungsflansches are more favorable than at a pitch normal to Pleuelstangenlängsachse so that a passage of the connecting rod shaft portion through the cylinder liner bore is further enabled. The number of screws or rivets is designed according to the connecting rod forces to be transmitted.
    In the conventional " horizontal " Marineteilung normal to Pleuelstangenlängsachse the number of screws is usually limited to four, in the division according to the invention parallel to the connecting rod longitudinal axis, the size of the Teilungsflansches be adjusted in height to the required number of screws and the expansion through the bushing bore can be further ensured.
    Due to the positive connection between the flange surfaces, the necessary shear force and the screw dimensions can be substantially reduced.
    In a first advantageous embodiment of the invention, it is provided that the dividing plane is formed normally on the pivot axis of the small connecting rod eye and / or the large connecting rod eye of the connecting rod. 4/18 4
    A second embodiment of the invention provides that the dividing plane is formed parallel to the pivot axis of the large connecting rod eye and / or the small connecting rod eye.
    The large Pleuelaugenteil may, preferably in a plane normal to the connecting rod longitudinal axis, be divided into an upper Pleuelaugenteil and a lower Pleuelaugenteil.
    The invention is explained in more detail below with reference to FIGS.
    Show it:
    1 shows a connecting rod according to the invention in a front view, in a first embodiment,
    2 this connecting rod in a section along the line II-II in Fig. 1,
    3 shows the detail III of FIG. 2,
    4 shows the connecting rod in a section along the line IV-IV in Fig. 2,
    5 shows a connecting rod according to the invention in a front view, in a second embodiment,
    Fig. 6, this connecting rod in a side view and
    Fig. 7 shows a further connecting rod in a side view.
    Functionally identical parts are provided in the embodiment variants with the same reference numerals.
    FIGS. 1 to 4 show a connecting rod 10 for a large engine, wherein the assembled connecting rod 10 consists of a connecting rod shaft part 12 and a large connecting rod part 14, which in turn is divided into an upper connecting rod part 16 and a lower connecting rod part 18. Upper and lower Pleuelaugenteil 5/18 5 16, 18 are connected by four Pleuelaugeschrauben 20 together. With reference numeral 22, the small connecting rod eye of Pleuelaugenschaftteiles 12 is designated. With reference numeral 24, the bore of the cylinder liner is indicated.
    The division of the connecting rod shank portion 12 and the large Pleuelaugenteils 14 takes place in the region of the rod shank 13, wherein a flange 12a, 14a of the connecting rod shank portion 12 and the large connecting rod portion 14 are interconnected.
    The division plane 26 defining the course of the separation between the connecting rod shaft part 12 and the connecting rod part 14 is arranged parallel to the connecting rod longitudinal axis 28 in the region of the connecting rod longitudinal axis 28. In order to avoid bending moments, the connecting rod longitudinal axis 28 is in the dividing plane 26. The flange surfaces 12a, 14a are arranged offset in each case to the connecting rod longitudinal axis 18. This offset 12b, 14b may be formed by a step (shoulder), a radius of curvature, a chamfer and / or other similar taper of the connecting rod shank. In the embodiments, the offset 12b of the connecting rod shank portion 12 is formed by a chamfer and the offset 14b of the large connecting rod portion 14 by a step. In the direction of the connecting rod longitudinal axis 28, in the exemplary embodiments in the region of the offset 14b, the connecting rod shaft part 12 is released from the large connecting rod part 14.
    As can be seen in FIG. 3, a form-locking connection 30 with two reciprocally formed or corresponding positive-locking elements 30a, 30b can be provided between the connecting rod part 12 and the large connecting-rod part 14, wherein the positive-locking connection 30 is formed, for example, by a toothing 32 of the flange surfaces 12a, 14a of the Pleuelstangenschaftteils 12 and the large Pleuelaugenteiles 14 can be done. The positive-locking elements 30a, 30b are formed by teeth 32a, 32b, for example, made by pushing or milling grooves, the processing direction of which runs essentially normal to the connecting rod longitudinal axis 28. Optionally, the grooves but also 6/18 6 extend obliquely to the connecting rod longitudinal axis 28. The dividing plane 26 is defined in this case as the median plane of the toothed flange surfaces 12a, 14a.
    A particularly positionally accurate mounting of the two parts can be made possible, for example, if the screw holes are only made after the connecting rod shaft 12 and the large connecting rod 14 have been brought to lie positively against each other. This ensures that after dismantling work, the two parts can be assembled again positionally accurate and form-fitting.
    Of course, other types of positive connections, for example via pins or pins, are possible.
    Furthermore, it is possible, instead of or in addition to a form-locking connection 30 with positive-locking elements 30a, 30b, to apply a friction-increasing coating on at least one flange surface 12a, 14a or to arrange a friction element-increasing intermediate element between the flange surfaces 12a, 14a.
    The connection between the connecting rod shaft portion 12 and the large Pleuelaugenteil 14 takes place in the exemplary embodiment via screws, which may be formed, for example, as a passport screws 34 (Fig. 4). As a result, the position of the two parts 12, 14 is fixed in the correct position. The connection can also be done by rivets or other fasteners.
    Due to the interlocking connection 30 and / or the friction-increasing measure a micro-sliding between the flange 12a, 14a is prevented, whereby acting on the screws or rivets shearing forces are largely prevented.
    In the exemplary embodiment illustrated in FIGS. 1 to 4, the dividing plane 26 is arranged normal to the pivot axes 36, 38 of the small connecting-rod eye 22 and of the large connecting-rod eye 40.
    The embodiment shown in FIGS. 5 and 6 differs from the exemplary embodiment illustrated in FIGS. 1 to 4 in that the 7/18 7
    Dividing plane 26 is parallel to the pivot axes 36, 38 of the small or large connecting rod 22, 40 is arranged.
    FIG. 7 shows another connecting rod 110 for a large engine with " vertical " Marineteilung, wherein the assembled connecting rod 110 consists of a connecting rod stem portion 112 and a large connecting rod portion 114, which in turn is divided into an upper Pleuelaugenteil 116 and a lower Pleuelaugenteil 118. Upper and lower Pleuelaugenteil 116, 118 are connected by four Pleuelaugenschrauben 120 together. Reference numeral 122 designates the small connecting rod eye of the connecting rod shaft part 112.
    The division of the connecting rod shaft portion 112 and the large Pleuelaugenteils 114 takes place in the region of the rod shaft 113th
    The upper Pleuelaugenteil 116 of the large Pleuelaugenteils 114 is fork-shaped, wherein the two fork portions 116 a and 116 b are spaced from each other for receiving the Pleuelschaftteils 112.
    The dividing planes 126 a and 126 b between the connecting rod shaft part 112 and the connecting rod part 114 are arranged parallel and symmetrical with the connecting rod longitudinal axis 128.
    The connection between the connecting rod shaft portion 110 and the large Pleuelaugenteil 114 via screws 134. 8/18
    权利要求:
    Claims (12)
    [1]
    8 CLAIMS 1. A connecting rod (10) for large engines, wherein the connecting rod (10) is formed in several parts and a connecting rod shank portion (12) of a large Pleuelaugenteil (14) in the region of the rod shank (13) is separated, the dividing plane (26) between the Connecting rod shank portion (12) and the large connecting rod portion (14) parallel to the connecting rod longitudinal axis (28) and wherein the connecting rod shank portion (12) and the large Pleuelaugenteil (14) in an overlapping region of the connecting rod shank portion (12) and the large Pleuelaugenteils (14) via Flanschflächen ( 12a, 14a) are interconnected, characterized in that a single parting plane (26) is formed between the connecting rod shaft part (12) and the large connecting rod part (14).
    [2]
    Second connecting rod (10) according to claim 1, characterized in that the dividing plane (26) in the region of the connecting rod longitudinal axis (28) is arranged, wherein preferably the connecting rod longitudinal axis (28) in the parting plane (26).
    [3]
    3. Connecting rod (10) according to claim 1 or 2, characterized in that the flange surfaces (12a, 14a) are arranged offset to the connecting rod longitudinal axis (28), wherein preferably the offset (12b, 14b) by at least one gradation and / or a Radius of curvature and / or a chamfer is formed.
    [4]
    4. connecting rod (10) according to one of claims 1 to 3, characterized in that the connecting rod shank part (12) and / or the large connecting rod part (14) in the region of the flange (12a, 14a) is tapered.
    [5]
    5. connecting rod (10) according to one of claims 1 to 4, characterized in that the connecting rod shaft part (12) from the large Pleuelaugenteil (14) - viewed in the direction along the connecting rod longitudinal axis (28) - in the region of the offset (12b, 14b) exempted is. 9/18 9
    [6]
    6. Connecting rod (10) according to one of claims 1 to 5, characterized in that the connecting rod shaft part (12) and the large connecting rod part (14) are non-positively and positively connected to each other.
    [7]
    7. connecting rod (10) according to one of claims 1 to 6, characterized in that between the flange surfaces (12a, 14a) of the connecting rod shank portion (12) and the large Pleuelaugenteils (14) at least one by two corresponding positive-locking elements (30a, 30b) formed Form-fit connection (30), wherein at least one positive-locking element (30a, 30b) on at least one flange surface (12a, 14a) is arranged.
    [8]
    8. Connecting rod (10) according to claim 6 or 7, characterized in that the positive connection (30) by a toothing (32) of the flange (12a, 14a) of the connecting rod shank portion (12) and the large connecting rod portion (14) is formed, wherein preferably, the dividing plane (26) forms a median plane of the toothing (32).
    [9]
    9. connecting rod (10) according to one of claims 1 to 8, characterized in that the dividing plane (26) normal to the pivot axis (36, 38) of the small connecting rod (22) and / or the large connecting rod (40) of the connecting rod ( 10) is formed.
    [10]
    10. connecting rod (10) according to one of claims 1 to 8, characterized in that the dividing plane (26) parallel to the pivot axis (36, 38) of the large connecting rod (40) and / or the small connecting rod (22) is formed.
    [11]
    11. connecting rod (10) according to one of claims 1 to 10, characterized in that the connecting rod shank part (12) and the large connecting rod part (14) by passbolt bolts (34), preferably by four passbolt screws (34) are interconnected.
    [12]
    12. connecting rod (10) according to one of claims 1 to 11, characterized in that the large Pleuelaugenteil (14), preferably in a 10/18 10 plane normal to the connecting rod longitudinal axis (28), in an upper Pleuelaugenteil (16) and a lower Pleuelaugenteil (18) is divided. 2012 09 11 b / w 11/18
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1514652A|1923-07-09|1924-11-11|Burmaster Ellis Kimpton|Connecting rod|
    US4557622A|1983-03-12|1985-12-10|Chalmers Wallace G|Adjustable torque rod|
    WO1986004122A1|1985-01-11|1986-07-17|The Secretary Of State For Trade And Industry In H|Connecting rod|
    DE3719112A1|1987-06-06|1988-12-22|Opel Adam Ag|CONNECTING ROD, IN PARTICULAR FOR INTERNAL COMBUSTION ENGINES|
    GB412969A|1933-01-06|1934-07-06|Arthur Johnstone|Improvements in or relating to connecting rods|CN104196872A|2014-07-28|2014-12-10|朱德仲|Swinging rod mechanism for closed container device|
    CN108757714A|2018-07-09|2018-11-06|安徽思源三轻智能制造有限公司|A kind of connecting rod|
    DE102018123500A1|2018-09-25|2020-03-26|Man Energy Solutions Se|Device and method for adjusting the length of a connecting rod of a cylinder of an internal combustion engine|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT503742012A|AT513297B1|2012-09-11|2012-09-11|Connecting rod for large engines|AT503742012A| AT513297B1|2012-09-11|2012-09-11|Connecting rod for large engines|
    DE201310109730| DE102013109730A1|2012-09-11|2013-09-05|Connecting rod for high-power engine, has shaft and eye parts connected with one other by flange surfaces in overlapping area of shaft and eye parts, where dividing plane is formed between shaft and eye parts and runs parallel to axis|
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