Wheel axle suspension having clamp bodies with a protrusion for attaching an indented tubular axle to trailing arms

Technical Field

The invention relates to a vehicle such as truck or trailer axle suspension. Such a wheel axle suspension typically comprises a so-called traction arm attached to the tubular shaft, the traction arm is hingeably mounted to the vehicle chassis. There still exist in each traction arm and vehicle chassis between the operation of the pneumatic spring.

Background Art

In DE   29615286 discloses a wheel suspension, wherein the tubular shaft has a circular cross-section, and has a shaft is clamped to the traction arm of the attachment region. The well-known in the area of the attachment axis is deformed as the non-circular shape. Specifically, each of the attachment region in the circumference of the shaft are provided with one or more flat area, in order to prevent the shaft relative to the traction arm or against the traction arm mounting of the clamping element position change.

Includes the traction arm of a pneumatic spring suspension of a vehicle such as truck and trailer to roll motion. Roll of the vehicle in motion in its attachment region forming a torsional load on the shaft. When taking into account the strength of the resistance the axis when the torque load, with flat side of the shaft is disadvantageous.

In US   1906290 discloses a different type of wheel suspension, it has a stack of leaf spring and non-traction arm. In the suspension of the wheel shaft, on the shaft in the area of attachment of the upper side is flat. The attachment region of the flat side against the flat even spring or flat spring saddle installation. The attachment region with notches on the opposite side. Clamping from below is fastened against the shaft, the clamping is provided with the ridges within the gap. Flat side and the gap has prevent the installation of the shaft for the purpose of rotary and longitudinal movements.

Content of the invention

The purpose of this invention is to provide an improved wheel suspension, it is easy to manufacture and assembly, can also be generally applied.

Through this purpose for a vehicle suspension to the wheel, the same on both sides of the vehicle comprises a traction arm, pneumatic spring and the thin-walled tubular shaft, the traction arm in the longitudinal direction of the vehicle is extended, the attachment region with states the axle body , the states the axle body in the attachment region is attached to the traction arm, the direction of travel of the vehicle when viewed on, each traction arm place articulation front part of the earth and connected to the supporting bracket, the support bracket is arranged on the chassis of the vehicle, the pneumatic spring can in each said traction the arm and states operation between the chassis, wherein the wheel axle suspension also comprises a clamping body and a tensioning element, the clamping body is used for the clamping states the axle bodystates the axle body in the region of attachment of, the tensioning element is used to provide clamping force for the clamping body, wherein the clamping body in the auxiliary area of the specific longitudinal distance and around the almost states the axle bodystates the axle body engagement with the the whole circumference, wherein the shaft body in the clamping area has a substantially circular cross-section, and in each of the clamping area has a long notch, the notch in the states the axle body extending in a longitudinal direction, and wherein at least one of said clamping main body is provided with a joint in the recess states long in the lug.

In particular over the entire circumference to surround the length of the clamping body has states the axle body the effect is, it prevents the lug on the shaft under the influence of torsional load "rolling" the light out of the recess.

According to the present invention has the advantages of the wheel suspension is, it only comprises two must be held in the part of the shaft body.

Another advantage is that the, releasable clamp structure when required. This provides the necessary replacement of the possibility of the shaft body. Not using welding or other permanent attached to the shaft with respect to the traction arm locking.

Another aspect of the invention relates to a vehicle wheel axle suspension, the same on both sides of the vehicle comprises a traction arm, pneumatic spring and the thin-walled tubular shaft, the traction arm in the longitudinal direction of the vehicle is extended, the attachment region with states the axle body , the states the axle body in the attachment region is attached to the traction arm, the direction of travel of the vehicle when viewed on, each traction arm place articulation front part of the earth and connected to the supporting bracket, the support bracket is arranged on the chassis of the vehicle, the pneumatic spring can in each said traction the arm and states operation between the chassis, wherein the wheel axle suspension also comprises a clamping body and a tensioning element, the clamping body is used for the clamping states the axle bodystates the axle body in the region of attachment of, so as to be connected to the traction arm states the axle body , the tensioning element is used to provide clamping force for the clamping body, wherein the clamping body in the auxiliary area of the specific longitudinal distance and around the almost states the axle bodystates the axle body engagement with the the whole circumference, wherein the shaft body in the clamping area has a substantially circular cross-section, and in each of the clamping area has a long notch, the notch in the states the axle body extending in a longitudinal direction, wherein the intermediate member is provided with a lug, the lug engaging in the recess in the states the axle body in states long , and the intermediate member through a plurality of the clamping body or the one of said clamping main body and is kept in place, so that the said lug engaging in the recess states longstates the axle body in the in.

From the requirements in the set in the right of the the preferred embodiments of the present invention.

Description of drawings

The reference Figure below more specifically describe this invention, in these drawings:

Figure 1 shows the axle suspension according to the present invention side orthograph,

Figure 2 shows the Figure 1 of the wheel axle of the suspension in the traction arm orthograph,

Figure 3 shows the Figure 1 of the wheel axle of the suspension in the side of the traction arm orthograph,

Figure 4 shows the cross section of the axle body having recesses of the stereogram,

Figure 5 shows the cross section of the axle body having recesses of the stereogram, wherein, the intermediate member is arranged on the axle body,

Figure 6 shows the Figure 5 with of the middle member in the cross section of the shaft,

Figure 7 shows the is clamped between the clamping body between the side of the wheel shaft of the attached Figure, wherein, the intermediate member is clamped between the clamping main body, and

Figure 8 shows the Figure 7 by the clamping of the cross-sectional view of the wheel shaft.

Mode of execution

Figure 1 shows the vehicle chassis for from 10 hanging the wheel axle of the wheel axle suspension 1. The wheel shaft has a circular transverse cross-section of the tubular shaft 2.

Axle suspension 1 on both sides of the vehicle includes a traction arm 3. Each traction arm 3 in the longitudinal direction of the vehicle is extended, and in the front-end portion 34 (as shown in Figure 3) is hingedly attached to the supporting bracket 4, supporting bracket 4 attached to the chassis 10. Furthermore, traction arm 3 has a mounting hole 33. As shown, the draft arm 3 as a flexible traction arm, in this field, also known as a spring arm, which has spring part 35. However, it should be noted that, the invention is not limited to having a flexible traction arm suspension, but it can also be implemented using rigid traction arm.

In the illustrated embodiment, the traction arm 3 is formed with the rear end of the the overall clamping body 32. Shaft 2 is clamped against the traction arm 3 the clamping body 32 bending of the contact area 31. The shaft 2 with the contact area 31 on one side of to the contrary, another clamping body 5 joint shaft 1. Pneumatic spring 6 attached to the upper side of the vehicle chassis 10, attached to the support arm in the lower side 7.

In plan view, the traction arm 3 forming the contact part 31 the clamping body 32 is roughly triangular, this in Figure 2 can be clearly seen in. The maximum width of the triangle located in the clamping body 32 at the front of, and the triangle peak is located on the clamping body 32 at the rear of the. Two holes 36 formed in the contact area of the traction arm 31 the clamping body 32 near the front end of the wide part, and a single hole 37 is arranged in the clamping body 32 narrower of the rear end portion 38 is.

In the illustrated embodiment the clamping body 5 is preferably cast or forged metal part. In the illustrated specific embodiment, clamping body 5 has a substantially triangular shape.

Shaft 2 by means of the three clamping bolts 8, 9 and are held in the clamping body 32 and clamping body 5 between, the clamping bolt 8, 9 through the traction arm 3 the clamping body 32 and the hole in another clamping body 5 which extends in the hole. The bolt 8, 9 and the nut 11, 12 fit.

Pneumatic spring supporting arm 7 as separate components, preferably casting or forging the metal member. Its basically takes the form of long shape. Pneumatic spring supporting arm 7 by means of the clamping bolts 9 and attached to the clamping body 5, clamping bolts 9 through the clamping body 5 and in back of the traction arm 3 the clamping body 32 in the hole 37 extends. Furthermore, for the pneumatic spring 6 of the supporting arm 7 has clearance holes, the clearance holes are respectively connected with the traction arm 3 of the part 32 and the clamping body in the 5 back in alignment.

Clamping body 5 and the support arm 7 can be a separate component, as shown in Figure 1 is shown in the embodiments of. However, for the present invention, the support arm 7 can be combined with the clamping body 5 are integrally formed.

Clamping body 32 and 5 around the shaft 2 of the entire circumference. Therefore, shaft 2 in its clamping region appears in the cross-section is maintained in a circular shape.

The shaft 2 is arranged in the clamping area of the recess 21, as shown in Figure 4. Each of the trays located in the recess in the holding region 21 aligned to each other. In the preferred embodiment, the recess 21 is groove-shaped recess. In the practicable embodiment, the axle body in its entire length with a notch, the long recess and located at each of the recesses in the holding region 21. Long recess 21 of the shape of the cross section is round, for example with photo shown in the shape of a circular segment. Because shaft 2 in each of the clamping area of the recess 21 is aligned to each other, therefore, traction arm 3 the clamping body 32 within the fall into the notch in the lug 39 determined by the position in the right direction and the axis of the 2 joint. The result is, traction arm 3 has already been installed does not need to be carried out after the alignment.

The recess 21 can be pressed on the shaft 2 in. In the process in the process of, tubular shaft 2 may be a localized slightly deformed to an elliptical shape. However, the shape is still in the cross-section is substantially circular. When the shaft 2 is clamping body 5 and 32 when clamping, the cross-sectional deformation to return to the round.

The clamping body 32 of the clamping surface 31 is provided with a long lug 39. Long lug 39 having substantially the shape of the cross section of a circular segment. The contact surface of the long lug 31 integrally formed on. Long lug 39 engage in the notches in the shaft 21 in.

In the preferred embodiment, the recess 21 is greater than the length of the clamping body 32 and 5 of the width. The advantage of this is, shaft body 2 and can be assembled with different wheeltrack of the width of the suspension used together with the wheel shaft of the vehicle. Alternatively, the entire length of the shaft can have one recess rather than two recesses, each of the notch is located in the clamping region of the axis.

In the Figure 5 and Figure 6 shows the 2nd aspect of the present invention. With the Figure 4 compared with in the recess shown, in these map display having a long recess in the shaft 2.

Positioning in the recess with the intermediate member 50, the intermediate member 50 has a surface formed to the spline of the main body 51. Main body 51 has, in the mounted state, and the shaft 2 engaging contact surface 52. In the contact surface 52 is integrally-terrain growth round lug 53 rounded lug 54. A clamping body 301 has a long recess 302. The intermediate member 50 of the main body 51 with closely to the clamping body 301 in recess 302 in. The lug 53 engaged in the shaft 2 of the long recess 21 in.

Against the shaft 2 the contact surface of the outer surface 52 and is inserted into the recess 21 is rounded in the lug 53 is matched with, thus when the torsional load via intermediate member 50 is applied to the shaft, the lug 53 blocking shaft 2 relative to the intermediate member 50 of the rotary motion. Contact surface 52 blocking surface provided by blocking the recess are rolled round lug 21 trend.

This embodiment has the advantages that, it can be universally with all types of wheel suspension to be used, as long as a clamping body is fitted with the spline of the middle member of the recessed portion. It must be noted that, in this embodiment the clamping body 301 can be a separate component. However, the same recess can be envisaged 302 with the traction arm is integrally formed in the clamping body (for example, see Figure 2 and 3) of the embodiment. In this embodiment, for the spline recess 302 may be forging for the clamping body 32 of the curved surface 31.

Figure 7 and Figure 8 show the 2nd aspect of the present invention of an alternate embodiment. Clamping body 32 the and [...] the 5 [...] each have a curved contact surface, shaft 2 and against these contact surface is received. Clamping body 32 the [...] , the 5 [...] each having each of the contact surface adjacent to the front edge part 320,520 and the rear edge portion 330,530. Each front edge part 320,520 and the rear edge portion 330,530 facing each other in the mounted state, as shown in Figure 7 and 8.

In this embodiment is provided with a intermediate member 70. The intermediate member 70 comprises a long band-shaped body, the band-shaped body in the illustrated embodiment are held in the clamping body 32 the [...] , 5 the front edge of the spaced apart [...] part 320 and 520 between. Band-shaped body of one of the side edge portion 71 engaged in the shaft 2 of the recesses 21 in, as shown in Figure 8. Side edge portions of the the similar to that of Figure 5 shown in the intermediate member 50 of the projection 53 of the form and function. Intermediate member 70 of a strip-shaped main body has a through hole 72, is used for allowing the tensioning bolt 8 and 9 through the bar portion.