• 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:
    wheel axle suspension having clamps with a protrusion for securing a notched tubular axle to suspension arms a wheel axle suspension for a vehicle comprises on both sides of the vehicle a suspension arm extending in the longitudinal direction of the vehicle, a thin-walled tubular axle body, which has attachment regions where the axle body is attached to the suspension arms. each suspension arm is pivotally connected at the front, viewed in the vehicle's direction of travel, to a bearing bracket that is attached to the vehicle chassis. the suspension also comprises an air spring that is operative between each of the suspension arms and the chassis. the axle suspension further comprises clamps for securing the axle body in its clamping regions so as to secure the axle body to the suspension arms, as well as tension elements to provide clamping force to the clamps. the clamps surround the shaft body at a certain longitudinal distance from the clamping region and virtually encircle its entire circumference. the shaft body has a substantially circular cross-section in the clamping regions and is provided with an elongate notch in each of the clamping regions. the notch extends in the longitudinal direction of the shaft body. at least one of the clamps is provided with a protrusion which fits into the elongated notch.
    公开号:BR112012011107B1
    申请号:R112012011107-8
    申请日:2009-11-10
    公开日:2021-07-20
    发明作者:Aalderink Derk Geert
    申请人:Vdl Weweler B.V；
    IPC主号:
    专利说明:

    The present invention relates to an axle suspension of a vehicle such as a truck or trailer. Such wheel axle suspension typically comprises a tubular wheel axle which is attached to so-called suspension arms which are mounted in articulation to the vehicle chassis. In addition, air springs that are operative between each of the suspension arms and the vehicle chassis are present.
    In DE 296 15 286 a wheel axle suspension is shown, in which the tubular axle body has a circular cross section and has attachment regions where the axle body is fixed to the suspension arms. The known axis body is deformed in the clamping zones to a non-circular shape. In particular, each of the attachment regions is provided with one or more flattened regions on the circumference of the axle body to prevent changes in position of the axle body with respect to the suspension arm or the fastening element mounted against the suspension arm.
    Vehicles such as trucks and trailers equipped with air suspensions comprising suspension arms are susceptible to rolling motions. The vehicle's rolling movements result in torsional loads on the axle body in the axle fixing regions. Shafts with flat sides are disadvantageous when considering the effort of the shaft body to resist torsional loads.
    In US 1 906 290 a different type of wheel axle suspension is shown with a stack of flat springs rather than a suspension arm. In this wheel axle suspension the axle body is flattened in a clamping region on an upper side. The flat side of the clamping region is mounted against a flat spring or a bundle of flat springs. On the opposite side of the fastening region is provided with a notch. A clamp is clamped from below against the shaft body, which clamp has a protrusion engaging the notch. The flat side and notch are intended to prevent rotational and longitudinal movements of the assembled shaft body.
    The present invention aims to provide an improved wheel axle suspension which is easy to manufacture and assemble and, furthermore, is universally applicable.
    This objective is achieved by means of a wheel axle suspension for a vehicle, comprising on both sides of the vehicle a suspension arm that extends in the longitudinal direction of the vehicle, a thin-walled tubular axle body, which has regions of attachment where the axle body is fixed to the suspension arms, each arm being connected in articulation at the front, seen in the vehicle's direction of travel, to a bearing bracket that is disposed on the vehicle chassis, as well as a pneumatic spring 15 which is operative between each of the suspension arms and the chassis, in which the wheel axle suspension further comprises clamps to secure the axle body in its clamping regions, as well as tension elements to provide clamping force for the clamps , in which the clamps surround the axle body at a certain longitudinal distance from the clamping region and surround virtually its entire circumference, where the axle body has a substantial cross section It is circular in the attachment regions and is provided with an elongated notch in each attachment region, which notch extends in a longitudinal direction of the shaft body and where at least one of the clamps is provided with a protrusion which engages the elongate notch.
    Clamps that encircle the shaft body over a certain length of the total circumference have the effect of preventing the protrusion from being “rolled” out of the groove under the influence of torsional loads on the shaft.
    The wheel axle suspension according to the invention has the advantage of comprising only two parts which have to be fixed to the axle body.
    Another advantage is that the fixing structure is removable if necessary. This provides the possibility to replace an axle body if necessary. No welds or other permanent fixtures are used to fix the axle body with respect to the suspension arms.
    Another aspect of the invention relates to a wheel axle suspension for a vehicle, comprising on both sides of the vehicle a suspension arm extending in the longitudinal direction of the vehicle, a thin-walled tubular axle body having attachment regions where the axle body is attached to the suspension arms, each suspension arm being connected in articulation at the front, seen in the vehicle's direction of travel, to a bearing bracket that is arranged on the vehicle chassis, as well as a pneumatic spring which is operative between each of the suspension arms and the chassis, where the wheel axle suspension further comprises clamps for securing the axle body in its attachment regions in order to connect the axle body to the suspension arms , as well as tension elements to provide the clamping force for the clamps, wherein the clamps surround the shaft body at a certain longitudinal distance from the clamping region and surround virtually the entirety. its circumference, where the shaft body has a substantially circular cross-section in the attachment regions and is provided with an elongated notch in each attachment region, which notch extends in a longitudinal direction of the shaft body, where an intermediate member is provided with a protrusion which engages in the elongated notch 25 in the shaft body and which intermediate member is held in position by the clamps or one of the clamps such that said protrusion engages said elongate notch in the shaft body.
    Preferred embodiments of the invention are set out in the dependent claims. The invention will be described in more detail with reference to the drawing, where:
    Fig. 1 shows a side elevation view of a 5-wheel axle suspension according to the invention, Fig. 2 shows an elevation view of a suspension arm of the wheel axle suspension of Fig. 1, Fig. 3 shows a side elevation view of a suspension arm of the wheel axle suspension of Fig. 1, Fig. 4 shows in perspective view a section of a shaft body with a notch,Fig. 5 shows in perspective view a section of a shaft body with a notch with an intermediate member placed in the shaft body.Fig. 6 shows a cross section of a shaft body with the intermediate member of Fig. 5,Fig. 7 shows a side elevation view of wheel axle secured between clamps with an intermediate member secured between them, and Fig. 8 shows a cross-sectional view of the attached wheel axle of Fig. 7. Fig. 1 shows a wheel axle suspension 1 for supporting a wheel axle of a vehicle chassis 10. The wheel axle has a tubular axle body. 2 with a circular cross section.
    Wheel axle suspension 1 comprises a suspension arm 3 on both sides of the vehicle. Each suspension arm 3 extends in the longitudinal direction of the vehicle and is on a front part 34 (see Fig. 3) fixed in articulation to a bearing bracket 4 which is fixed to the chassis 10. In addition, the suspension arm 3 has a mounting hole 33. The suspension arm 3 as shown in the figures is a flexible suspension arm, also known as an articulated arm, with an elastic part 35. Note however that the present invention is not limited to suspensions with arms. flexible suspension and can also be carried out with rigid suspension arms.
    In the embodiment shown the suspension arm 3 has an integral clamp 32 formed at its rear end. The axle body 2 is fixed against a curved contact region 31 of the clamp 32 of the suspension arm 3. On the side of the axle 2 opposite the contact region 31 another clamp 5 surrounds the axle body 1. An air spring 6 is fixed the vehicle chassis at the top and a support arm 7 at the bottom.
    The bracket 32 of the suspension arm 3 which forms the contact region 31, in top view, has an approximately triangular shape as is clearly visible in Fig.2. The widest width of the triangular shape is situated in front of the bracket 32 and the tip of the triangle being situated in the back of the bracket 32. There are two holes 36 near the wide front part of the bracket 32 of the suspension arm that form the contact region 31, and there is a single hole 37 in the narrower rear part 38 of the clamp 32.
    Clamp 5 in the embodiment shown is preferably a piece of forged or cast metal. The clamp 5 has in the specific embodiment shown a substantially triangular shape.
    The axle body 2 is fixed between the clamp 32 and the clamp 5 by means of three clamping screws 8, 9, which extend through the holes in the clamp 32 of the suspension arm 3 and the holes in the other clamp 5. screws 8, 9 complete with nuts 11 and 12.
    The air spring support arm 7 is a separate piece, preferably a forged or cast metal piece. It has a generally elongated shape. The air spring support arm 7 is fixed to the clamp 5 by means of the tightening screw 9 which extends through a rear hole in the clamp 5 and the rear hole 37 in the clamp 32 of the suspension arm 3. support 7 for air spring 6 has an opening which is aligned with the rear hole in part 32 of suspension arm 3 and with the rear hole of clamp 5 respectively.
    Clamps 32 and 5 together encircle the entire circumference of the shaft body 2. Hereby the shaft body 2 in its fastening regions is held in a circular shape, seen in cross section. In the fastening region of the shaft body 2 there is a notch 21 as shown in Fig. 4. The notches 21 in the respective attachment regions of the shaft body 10 are aligned with one another. In the preferred embodiment the notch 21 is a slot-like notch. In a possible embodiment the shaft body has a notch over its entire length, which long notch comprises the notches 21 in the respective fastening regions. The elongated notch 21 has in cross section a rounded shape, for example the shape of a circle segment as shown in the figures. Because the notches 21 in the respective attachment regions of the axle body are aligned with one another, the brackets 32 of the suspension arms 3 engage with the axle body 2 in the correct orientation determined by the position of the protrusion 39 falling into the notch. This has the result that the suspension arms 3 do not have to be aligned after they have been assembled.
    The notch 21 can be pressed into the shaft body 2. During this process the tubular shaft body 2 may be deformed somewhat locally to an oval shape. However, the shape remains substantially circular in cross section. When the shaft body 2 is fixed by the clamps 5 and 25 32, the cross section is deformed again to circular.
    On the attachment surface 31 of the bracket 32 there is an elongated protrusion 39. The elongated protrusion 39 generally has a cross section in the form of a segment of a circle. The elongated protrusion is integrally formed on the contact surface 31. The elongated protrusion 39 engages the notch 21 in the shaft body.
    In the preferred embodiment, the notch 21 has a length that is greater than the width of the clamps 32 and 5. This has the advantage that the axle body 2 can be used universally with wheel axle suspensions for vehicles of different widths. Alternatively, the axle body may be provided with a notch over its entire length instead of two notches, each located in the attachment region of the axle body.
    In Fig. 5 and Fig. 6 a second aspect of the invention is shown. In the figures is shown a shaft body 2 with an elongated notch comparable to that shown in Fig. 4.
    In the notch, an intermediate member 50 having a main body 51 shaped like a key is positioned. The main body 51 has a contact surface 52 which in the assembled state engages the shaft body 2. On the contact surface 52, an elongated rounded protrusion 53 rounded protrusion 54 is integrally formed. One of the brackets 301 is provided with an elongated recess 302. The main body 51 of the intermediate member 50 fits snugly into the recess 302 in the bracket 301. The protrusion 53 engages the elongated notch 21 in the shaft body 2.
    The contact surface 52 which lodges against the outer surface of the shaft body 2, and the rounded protrusion 53 which is inserted into the notch 21 cooperate such that the protrusion 53 blocks rotational movements of the shaft body 2 with respect to the intermediate member 50 when Torsional loads are subjected to the shaft body via intermediate member 50. The contact surface 52 provides a locking surface such that the tendency of the rounded protrusion to roll out of the notch 21 is blocked.
    The advantage of this embodiment is that it can be used universally with all types of wheel axle suspensions as one of the clamps is provided with a recess in which the key of the intermediate member fits. It should be noted that clamp 301 in this assembly may be a separate part. However, an embodiment where the recess 302 is placed in a bracket that is integral with the suspension arm 5 (see Figs 2 and 3) is also considered. In this case the recess 302 for the key can be forged in the curved surface 31 of the clamp 32.
    Fig. 7 and Fig. 8 show an alternative embodiment of the second aspect of the invention. Clamps 32' and 5' have a curved contact surface against which the shaft body 2 is received. Each of the clamps 10 32', 5' has a front end 320, 520 and a rear end 330, 530 adjacent to respective contact surfaces. The respective front ends 320 and 520 and the rear end 330 and 530 in the assembled state face each other, as can be seen in Figs. 7 and 8.
    In this embodiment, there is an intermediate member 70. The intermediate member 70 comprises an elongated strip-like body which in the shown embodiment is secured between the space separating the front ends 320 and 520 of the brackets 32' and 5'. One side of the end 71 of the strip-shaped body fits into the notch 21 in the axle body 2, as seen in Fig. 8. The side edge is considered similar to the shape and function of the protrusion 53 of the intermediate member 50 shown in Fig. 5. The band-shaped body of the intermediate member 70 has through holes 72 for passing through the base of the tightening screws 8 and 9.
    权利要求:
    Claims (7)
    [0001]
    1. Wheel axle suspension (1) for a vehicle, comprising on both sides of the vehicle a suspension arm (3) extending in the longitudinal direction of the vehicle, a thin-walled tubular axle (2), which has attachment regions where the axle body is fitted to the suspension arms (3), each suspension arm (3) being connected at the front in articulation, seen in the vehicle's direction of movement, to a bearing bracket (4) which is arranged on the vehicle chassis (10), as well as the pneumatic spring (6) which is operative between each of the arms (3) and the chassis (10), wherein the suspension axle (1) further comprises clamps (5, 32) to secure the axle body (2) in the fixing regions thereof in order to fix the axle body (2) to the suspension arms (3), as well as tension elements (8, 9, 11, 12) which provide clamping force to the clamps (5, 32), wherein the clamps (5, 32) enclose the shaft body (2) at a certain longitudinal distance from the clamping region and surround. am virtually its entire circumference, where the axle body (2) has a substantially circular cross section in the attachment regions and is provided with a notch (21) in each of the attachment regions, the suspension characterized by the fact that the notch (21) is elongated in shape and extends in a longitudinal direction of the shaft body (2) and wherein at least one of the clamps (32) has a protrusion (39) which fits into the elongated notch (21) wherein the elongated notch (21) has a rounded cross section, for example, it has a cross section in the shape of a circle segment, and where the protrusion (39) has a rounded cross section, for example it has a cross section in the shape of a circle. of a circle segment.
    [0002]
    2. Wheel axle suspension according to claim 1, characterized in that the notch is a groove-type notch.
    [0003]
    3. Wheel axle suspension according to claim 1 or 2, characterized in that the axle body is provided with a notch along its entire length.
    [0004]
    4. Wheel axle suspension according to any one of claims 1 to 3, characterized in that one of the brackets (32) is an integral part of the suspension arm (3).
    [0005]
    5. Wheel axle suspension according to claim 4, characterized in that the bracket (32) which is an integral part of the arm is provided with a projection (39).
    [0006]
    6. Wheel axle suspension according to any one of claims 1 to 5, characterized in that the notch (21) has a length that is greater than the width of the clamps (5, 32).
    [0007]
    7. Wheel axle suspension according to any one of claims 1 to 6, characterized in that the notches (21) in the respective fastening regions are aligned with one another.
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    同族专利:
    公开号 | 公开日
    CN102596602B|2015-11-25|
    US8764037B2|2014-07-01|
    WO2011059312A1|2011-05-19|
    ZA201202686B|2013-01-30|
    CA2776799A1|2011-05-19|
    EP2499009A1|2012-09-19|
    BR112012011107A2|2020-08-25|
    AU2009355364A1|2012-05-24|
    US20120228847A1|2012-09-13|
    CA2776799C|2015-09-15|
    EP2499009B1|2016-10-05|
    CN102596602A|2012-07-18|
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    法律状态:
    2020-09-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-09-24| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-05-11| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-07-20| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 10/11/2009, OBSERVADAS AS CONDICOES LEGAIS. PATENTE CONCEDIDA CONFORME ADI 5.529/DF, QUE DETERMINA A ALTERACAO DO PRAZO DE CONCESSAO. |
    优先权:
    申请号 | 申请日 | 专利标题
    PCT/NL2009/000215|WO2011059312A1|2009-11-10|2009-11-10|Wheel axle suspension having clamp bodies with a protrusion for attaching an indented tubular axle to trailing arms|
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