Axle assembly with compression spring bodies and camber / toe adjustment

Abstract

The invention relates to an axle assembly comprising a support body (2) with an axially extending receiving passage (3), a plurality of axially extending spring elements (4), and a rocker arm body (5). The rocker arm body (5) comprises a polygonal axle stub (6). In the intended assembly state, the spring elements (4) are positively engaged in a gap (10) between the axle stub (6) and the polygonal receiving passage (2) such that the axle stub (6) is supported in the receiving passage (3) by means of the spring elements (4) and can be rotated about an axis of rotation (A) to a limited extent by deformation of the spring elements (4).The axle assembly (1) has an adjusting device (30, 30') which is designed to locally change the width of the gap (10) between the axle stub (6) and the receiving passage (3) so that the angular position (W) of the axis of rotation (A) of the axle stub (6) relative to an axis of extension (B) of the receiving passage (2) is adjustable.

Description

[0001] The invention lies in the field of axle assemblies for rubber spring axles of land vehicles, in particular trailers.

[0002] Rubber spring axles are a simple form of wheel suspension, often used for road trailers. The mechanically active part of a rubber spring axle is an axle assembly, which in practice often consists of an outer square tube, an inner square tube rotated by 45 degrees, and rubber cords pressed in between. The inner square tube is attached to one end of a wheel rocker arm, which in turn carries a wheel mount at the other end. During compression, the rubber cords are essentially deformed by compression and spring back. Furthermore, a certain degree of damping is achieved.

[0003] Instead of rubber, other materials can also be used, e.g. EPDM, so that in the present disclosure we generally refer to (compression) spring bodies.

[0004] A variant of a rubber spring axle is also known, in which a triangular tube is used on the inside instead of the square tubes, and a hexagonal tube is used on the outside. This allows for greater spring travel.

[0005] Compared to other designs, conventional rubber-sprung axles have comparatively low wheel toe and camber accuracy. Furthermore, they do not have a dedicated feature for the defined adjustment of the toe or camber values ​​of a connected wheel. Therefore, either the high tolerances for the toe or camber values ​​of the wheels must be tolerated, or a separate, externally actuated adjustment device is required to adjust the position of the entire axle assembly relative to the vehicle.

[0006] US 2007 / 0013171 A1 shows a mounting by means of which a torsion axle assembly equipped with rubber springs can be positioned relative to a vehicle frame. The torsion axle assembly comprises a square-section axle tube in which an axle stub is mounted by means of elongated rubber springs. A vertically projecting rocker arm is attached to the end of the axle stub, which in turn includes a wheel mount at its end. The axle stub is mounted in the axle tube by means of the rubber springs with limited rotation. When a force acts on the rocker arm, e.g., as a result of driving over a bump, the axle stub rotates, and the rubber springs between the axle stub and the axle tube are subjected to shear load. This generates a restoring force that counteracts the rotation, so that the movement of the rocker arm is dampened and cushioned.The axle tube is accommodated at its end closest to the wheel in a passage of a longitudinal member, and at its end farther from the wheel, it can be adjusted to attach it to a cross member. By inserting spacers, the end of the axle tube farther from the wheel can be positioned further away from the cross member to rotate the torsion axle assembly as a whole around a vertical axis and thus influence the wheel's toe angle. A cam disc can be used to raise or lower the end of the axle tube farther from the wheel in a vertical direction to rotate the torsion axle assembly as a whole around a longitudinal axis and thus influence the wheel's camber angle.

[0007] The object of the present invention is to provide an improved axle assembly and a vehicle constructed therewith. The invention achieves this object by the features of the independent claim.

[0008] The axle assembly according to the present invention comprises a support body with an axially extending receiving passage, a plurality of axially extending spring bodies, and a rocker arm body. The rocker arm body comprises a stub axle with a polygonal cross-section. The stub axle can be inserted into the receiving passage. In the intended assembled state, the spring bodies are positively received in a gap between the stub axle and the (also) polygonal cross-section receiving passage, such that the stub axle is mounted in the receiving passage by means of the spring bodies and can rotate to a limited extent about a rotational axis while deforming the spring bodies.

[0009] The axle assembly according to the present invention has (at least) one adjusting device which is designed to locally change the width of the gap between the axle stub and the receiving passage, so that the angular position of the axis of rotation of the axle stub is adjustable relative to an extension axis of the receiving passage.

[0010] The change in the width of the gap (hereinafter also referred to as gap width) is preferably carried out selectively for exactly one spring body or selectively for one spring body at a time.

[0011] The change or adjustment of the gap width is preferably carried out locally in relation to a length section of a spring body, in particular locally in relation to a length section (each) of a spring body.

[0012] The adjusting device can have any design. It can act inwardly or outwardly in the radial direction (radially relative to the rotational axis of the axle stub or the extension axis of the receiving passage), i.e., it can change the gap width from the outside or from the inside.

[0013] The adjusting device preferably comprises (at least) one pressure surface that can be positioned in the radial direction (radially relative to the rotational axis of the axle stub or the extension axis of the receiving passage). In the intended assembled state, the pressure surface bears against the spring body. Furthermore, the pressure surface can preferably only bear against a local section along the extension of the spring body.

[0014] The gap width between the receiving passage and the axle stub can be adjusted at one or more locations. Preferably, adjustment is provided at a section near the wheel and / or at a section remote from the wheel along the extension of the spring body.

[0015] By adjusting the gap width, an (additional) local preload of the spring body can be increased or decreased, resulting in a corresponding slight change in the angular position of the axle stub's rotational axis. Changing / adjusting the gap width can also create or remove a local preload of the spring body. Changing the angular position of the rotational axis can be used to adjust the toe angle and / or camber angle of a wheel attached to the rocker arm body.

[0016] The axle assembly according to the present disclosure therefore makes it possible to adjust the wheel running characteristics on the axle assembly itself, in particular for toe and camber, without having to loosen or change the fastening of the axle assembly as a whole. By adjusting the wheel running characteristics, various advantages can be achieved with regard to the driving characteristics of the vehicle to which the axle assembly is fastened or can be fastened. For example, reduced wear and improved driving stability can be achieved. On the other hand, it is possible to provide narrower tolerances for the wheel running values, in particular for the camber angle and the toe angle, for the vehicle's wheels. The axle assembly can be easily adjusted using the adjusting device to maintain the tolerance values ​​during a service or maintenance appointment.

[0017] A land vehicle according to the present disclosure comprises a chassis and at least one axle assembly, wherein the axle assembly is configured according to the present disclosure. The land vehicle may, in particular, be a road trailer that is preferably connectable to a motor vehicle via a towing coupling.

[0018] Further advantageous embodiments of the invention are specified in the subclaims, the following detailed description of the drawings and the attached figures.

[0019] The invention is illustrated schematically and by way of example in the figures. These show: Fig. 1: An axle assembly according to the present disclosure in a first embodiment; Fig. 2 and Fig. 3: Exploded views of the axle assembly of Fig. 1 ; Fig. 4: A detailed view of a support body for an axle assembly (1) according to a second embodiment variant; Fig. 5: A sectional view through an adjusting device in cross section to the axis of rotation; Fig. 6: A sectional view through a third embodiment of an adjusting device in longitudinal section to the axis of rotation; Fig. 7: A representation analogous to Fig. 2, wherein the pressure surfaces of an adjusting device are arranged on a frame support; Fig. 8, Fig. 9: Detailed view of the frame support in an assembly aid position before insertion into the support body and in an assembled position.

[0020] Fig. Figure 1 shows an oblique view of an axle assembly according to the present disclosure. It comprises a support body (2) with a receiving passage (3) that has a polygonal cross-section. Fig. Figure 5 shows a frontal view of the cross-sectional area of ​​the receiving passage (3).

[0021] In the present example, the receiving passage (3) is formed by a supporting body (2) in the form of an axle tube. The axle tube encloses the receiving passage in one piece and forms the vast majority of the boundary surface of the receiving passage. Fig. 4 shows a view of one end of the support body (2) or the receiving passage (3) with spring bodies (4) placed therein. The polygonal cross-section of the receiving passage (3), in particular of the support body (2), has a plurality of segments, in the present example three segments, where the boundary surface has a radial distance from the center of the receiving passage (3) that is the greatest in some areas in the circumferential direction. These are referred to below as outer placement segments (21, for each spring body). In between there are (outer) flank sections (22) at which the radial distance decreases in the circumferential direction down to a respective smallest radial distance. A spring body (4) placed in the receiving passage (3) has a preferred position in the placement segments (21), i.e. at the points with the radial distance from the boundary surface that is the greatest (in some areas).The flank sections (22) adjoining both sides in the circumferential direction are suitable for holding the spring body in the placement segment and for applying supporting forces by means of which a compression of the spring body in the circumferential direction can take place.

[0022] The axle stub (6) is mounted in the receiving passage (3) by means of the spring body (4), as for example in Fig. 5. The axle stub (6) also has a polygonal shape in cross-section. Segments are formed on the axle stub (6) in the circumferential direction, at each of which there is a region-specific minimum radial distance of the boundary surface from the center or central axis / axis of rotation (A) of the axle stub (6). These are referred to below as inner placement segments (23). A preferred position for a spring body (4) is also formed in these regions with the smallest radial distance. (Inner) flank sections (24) adjoin both sides, at which the radial distance of the boundary surface increases in the circumferential direction up to a region with a maximum radial distance. These flank sections (24) on the axle stub (6) are also provided and designed to exert a supporting force on a spring body (4), which acts in particular in the opposite direction to a supporting force on an obliquely opposite flank of the receiving passage.

[0023] In the intended assembly state, the axle stub (6) is inserted into the receiving passage (3) in such a way that each segment on the axle stub is located at a minimum radial distance from a corresponding segment on the receiving passage (3), so that an annular gap is formed between the axle stub (6) and the boundary of the receiving passage (3), which gap width gradually increases and decreases in the circumferential direction. Fig. The arrangement shown in cross-section in Figure 5 shows that one spring element (4) is arranged in each region of the annular gap where the gap width has a local maximum in the circumferential direction. The local gap width decreases to the left and right in the circumferential direction as a result of the respective flanks on the axle stub (6) and on the receiving passage (3). In the examples according to the figures, three spring bodies (4) are provided in the circumferential direction. Alternatively, a different number of spring bodies (4) can be provided, in particular a number of four or five spring bodies (not shown).

[0024] The angular distance between two adjacent spring bodies (4) can be chosen to be equal as shown in the drawings, i.e., 120 degrees in this case. Alternatively, the relative positions of the spring bodies (4) and the associated segments on the axle stub (6) and the receiving passage (3) can be unevenly distributed in the circumferential direction.

[0025] The polygonal cross-sectional shape of the axle stub (6) on the one hand and the receiving passage (3) on the other hand predetermines a basic value for the width of the gap (10), which is determined according to the geometry of the aforementioned components.

[0026] The adjusting device according to the present disclosure enables a change in the width of the gap (10) relative to this base value in a local area. This change in the width of the gap can preferably occur in the intended assembly state and in particular when the axle assembly (1) is ready for operation. In particular, it is not necessary to disassemble the axle assembly (1) to adjust the gap width.

[0027] The adjusting device (30, 30') has at least one and preferably a plurality of pressure surfaces (8, 8') which can be positioned in the radial direction (R) and bear against (exactly or in each case) a spring body (4). The pressure surfaces (8, 8') can be of any desired design and shape. Preferably, a pressure surface (8, 8') is provided in the region of an opening (19, 20) in the surface of the support body (2) or the receiving passage (3) or the axle stub (6). In other words, one pressure surface (8, 8') or one pressure surface (8, 8') each forms a part of the inner surface (11) of the receiving passage (3) or the support body (2) or a part of the outer surface (12) of the axle stub (6).

[0028] The opening (19, 20) or the pressure surface (8, 8') preferably extends in cross-section only over a small portion of the longitudinal extent (L) of a spring body (4) or a corresponding longitudinal region of the receiving passage (3) or the axle stub (6). In the circumferential direction, an opening (19, 20) or a pressure surface (8, 8') preferably covers, on the one hand, a region of the segment where the radial distance of the receiving passage (3) has a maximum value or of the axle stub (6) has a minimum value, and preferably, in the circumferential direction, a part of the adjoining flank to the left and right sides.

[0029] The one or more openings (19, 20) and the one or more pressure surfaces (8, 8') can be manufactured in any desired manner. A preferred embodiment provides that a pressure surface (8, 8') is formed by making a local cutout on the support body (2) and / or on the axle stub (6), with the cut-out part forming the pressure surface (8, 8'). Alternatively, a pressure surface can be formed as a separate component by primary forming or forming. A pressure surface can be made of metal or plastic, for example.

[0030] In a preferred embodiment, which is Fig. 7 to 9, a pressure surface (8) is provided on a frame body (25) which can be inserted into an opening (7a) of the receiving passage (3). In the example shown, a pressure surface (8) is arranged on at least one support arm (26) which, in the intended assembly state, extends from the front opening (7a) into the receiving passage (3) and reaches up to the height of the opening(s) (19) in the support body (2). The at least one support arm (26) is preferably elastically deformable and, in the intended assembly position, urges the pressure surface (8) into a preferred position in which the pressure surface (8) fits into the opening (19). This preferred position is shown in Fig. 9 shown.

[0031] The frame body (25) can be present in one or more forms. It can be designed as an assembly aid. The frame body can preferably comprise a support ring (27) that can be mounted between the support body (2) and the rocker arm body (5), which is provided and designed to axially distance at least one spring body (4) from a front end (7a) of the receiving passage (3). The support ring can be designed in one piece or in multiple pieces. It is preferably adapted to the contour(s) of the rocker arm body (5), in particular of the axle stub (6), and / or of the support body (2), in particular of the receiving passage (3).

[0032] In the example shown in the figures, the frame body (25) is arranged at the front opening (7a) closest to the wheel. Alternatively or additionally, a frame body (25) can be provided at a front opening (7b) remote from the wheel. In the intended assembled state, the spring bodies (4) can be axially guided at one end or at two ends by one or more frame bodies (25).

[0033] The frame body (25) can have a stop element that can be placed on the front end of the support body (2). From this stop element, the at least one support arm (26) can extend in the direction of the receiving passage (3). Furthermore, one or more support elements (28) can be provided on the frame body (25), which are designed to form an axial guide or support for an end face of a spring body (4). In the intended assembly position, the support elements (28) can be arranged flush with an end face of the support body (2) or can be arranged offset by a distance from the stop element in the direction of the receiving passage (not shown).

[0034] The adjusting device (30, 30') can have any desired mechanical design. It preferably comprises an adjustable fastening means (13, 13') that urges and / or supports the pressure surface (8, 8') or one pressure surface (8, 8') in the direction of the gap (10).

[0035] For the pressure surfaces (8) provided on the support body (2), in the examples shown, each pressure surface (8) is supported by a fastening means (13) in the form of a screw or a threaded bolt and can be positioned inwardly in the radial direction (R). A pressure surface (8) can be held at the inward-facing end of the fastening means and secured against falling out. Alternatively or additionally, a preferably elastic fastening of a pressure surface (8, 8') in the respective opening (19, 20) is possible.

[0036] The fastening means (13, 13') is preferably mounted directly or indirectly on the support body (2) or the axle stub (6).

[0037] In the examples shown, a collar (14) can be arranged on the support body (2), on which a suitable receptacle is provided for each fastening means (13). The arrangement of the collar (14) and the receptacle means is preferably such that, in the intended assembled state, each fastening means (13) is aligned in the radial direction (R) with a corresponding opening (19) and a pressure surface (8) that can be arranged therein. The collar (14) can be fastened to the support body (2) in any desired manner. In the examples shown, one or more axle supports (15, 16) are provided on the support body (2), with which the axle assembly (1) as a whole can be mounted on a vehicle, in particular on the frame of the vehicle. The collar (14) can be connected to such an axle support (15, 16) and / or to the support body (2) itself, for example by welding.The receptacles for the fastening means (13) can, for example, be designed as weld nuts which are fixed to the collar (14).

[0038] The fastening means (13, 13') preferably have a position securing means by which they can be fixed individually or jointly in a specific setting position in order to prevent a loosening of the fastening means or a change in the set radial position of a pressure surface (8, 8') during driving operation.

[0039] Fig. 6 shows a side view of an axle assembly (1), in which a longitudinal section through the support body (2), a spring body (4), and the axle stub (6) is visible in a cutaway. In this third embodiment, a pressure surface (8') is arranged in an opening (20) on the axle stub (6), which pressure surface can be positioned radially from the inside and (locally) bears against a spring element (4). The pressure surface (8') can be held and supported in any desired manner. In the example shown here, the pressure surface (8') is connected to a wedge-shaped element in the center of the axle stub (6) via an inclined guide, wherein the inclined guide is adjustable via an adjusting element, here in the form of a screw. The inclined guide and the adjusting means together form a fastening means (13') that urges and / or supports the pressure surface (8') in the direction of the gap (10).

[0040] As can be seen from the drawings, an adjusting device (30) can change the width of the gap (10) from the outside. Alternatively, an adjusting device (30') can change the width of the gap (10) from the inside. Alternatively or additionally, an adjusting device can be provided which changes the width of the gap (10) locally from the inside and from the outside. Accordingly, an arrangement of a pressure surface (8) can be provided on an outer side of the gap (10) in the radial direction (R), i.e. in a longitudinal section of the receiving passage (3). Alternatively, the arrangement of a pressure surface (8') can be provided on the inner side of the gap (10) in the radial direction (R), i.e. in a longitudinal section of the axle stub (6). Alternatively or additionally, the arrangement of pressure surfaces (8, 8') can be provided on the inside and on the outside of the gap (10).

[0041] A surface of the spring body (4) pointing in the radial direction (R) is, in the intended assembled state, in contact with the support body (2) and / or with the axle stub (6) for a predominant area portion along the extension (L) of the spring body (4) and, on the other hand, in contact with a pressure surface (8, 8') for a small area portion along the extension (L).

[0042] A spring body (4) can preferably be accommodated in the intended assembly position in an elastically (pre-)compressed position between, on the one hand, the inner surface (11) of the support body (2) and, on the other hand, the outer surface (12) of the axle stub (6). The spring body (4) is further preferably arranged such that it can be further compressed upon rotation of the axle stub (6) about the rotation axis (A), wherein the compression of the spring body (4) generates a restoring force which urges the axle stub (6) and thus the rocker arm body (5) back toward a reference position. In the (pre-)compressed position, the spring body (4) preferably already has a certain preload. The adjusting device (30, 30') according to the present disclosure is designed to locally change the width of the gap (10).The width of the gap (10) can be changed, in particular, to such an extent that an elastic preload of at least one spring body (4) accommodated in the gap (10) is locally generated or eliminated, or increased or decreased. The change in the width of the gap can be carried out, in particular, in the intended assembly state of the axle assembly.

[0043] The assembly of an axle assembly (1) according to the present disclosure can preferably be carried out with the following steps: Providing a support body (2) with a receiving passage (3), as well as a plurality of spring bodies (4), and a rocker arm body (5) with an axle stub (6). Moving the adjusting device (30, 30') into an inactive position. Introducing the spring bodies (4) and the axle stub (6) through an opening (7) into the receiving passage (3), wherein one spring body (4) is received between the provided segments on the receiving passage (3) and on the axle stub (6) with a maximum and minimum radial distance from the surface, respectively. Actuating the adjusting device (30, 30') to locally change the width of the gap (10) until the angular position (W) of the rotational axis (A) of the axle stub (6) relative to an extension axis (B) of the receiving passage (3) reaches a predetermined reference value.

[0044] The insertion of the spring bodies (4) can preferably be carried out using the Fig. 7 to 9 as an assembly aid. The spring bodies (4) can be supported in the axial direction, in particular on support elements (28) of the frame body (25). Alternatively or additionally, they can be guided in the radial direction, in particular by contact with the pressure surfaces (8).

[0045] Fig. Figure 6 shows an example of an axle stub whose axis of rotation (A) is not collinear with the axis of extension (B) of the receiving passage (3) due to the change in the gap width (10). The angular position (W) of the axis of rotation (A) of the axle stub (6) relative to the axis of extension (B) is shown there as an example. Those skilled in the art will recognize that, depending on which of the adjusting devices (30, 30') is used according to the various embodiments in the figures, a change in the wheel camber angle and / or the wheel toe angle can be generated individually or in combination. The actuation of the one or more adjusting devices (30, 30') preferably takes place in such a way that a measured actual toe and / or camber angle is adapted to an associated target angle.

[0046] In the illustrations shown, the axle assembly (1) is designed as a semi-axle with exactly one rocker arm body (5). Alternatively, the axle assembly (1) can be designed as a solid axle with two rocker arm bodies (5) that are inserted into opposite openings (7) of the receiving passage (3).

[0047] An adjusting device (30, 30') can be arranged at any length along the extension (L) of a spring body (4) or the support body (2) or the axle stub (6). Particularly preferred is either an arrangement close to the wheel or a arrangement remote from the wheel.

[0048] In the examples of Fig. 1, Fig. 2 and Fig. 3, an externally acting adjusting device (30) is arranged in the area of ​​the wheel-shaped opening (7a) of the receiving passage (3). In the example of Fig. 4, however, an arrangement of an outwardly acting adjusting device (30) in the region of an opening (7b) remote from the wheel of an axle assembly (1) designed as a half-axle is shown by way of example.

[0049] Fig. 2 and Fig. 6 show, by way of example, an arrangement of an internally acting adjusting device (30') remote from the wheel, ie, an arrangement on a longitudinal section along the extension of the spring element (4) remote from the wheel or at the end of the axle stub (6) remote from the wheel. Alternatively or additionally, the arrangement of an internally acting adjusting device (30') is also possible at the end of the axle stub (6) near the wheel.

[0050] The actuation of an internally acting adjusting device (30') is preferably carried out from an end face of the axle stub (6), ie in particular as shown in Fig.6 from an end of the axle stub (6) remote from the wheel or, alternatively, from an end face close to the wheel. In the latter embodiment, one or more adjusting means can also be arranged on an externally accessible end face of the rocker arm body (5) in overlap with the axle stub (6). Reference symbol 1 axle assembly 2 supporting body / axle tube 3 Recording passage 4 spring bodies 5 rocker arm body 6 axle stubs 7 Front opening of the receiving passage 7a Opening (near the wheel) 7b Opening (away from the wheel) 8 Print area (first) 8' printing area (second) 9 Adjusting device 10 Gap / Annular gap 11 Inner surface of the support body / receiving passage 12 Outer surface of the axle stub 13 Adjustable fasteners / screw / actuator 13' Adjustable fastener / screw / actuator 14 collars 15 axle bracket (near the wheel) 16 axle bracket (wheel-remote) 17 Wheel hub / shaft journal 18 Brake 19 Opening 20 Opening 21 Outer placement segment 22 Outer flank section 23 Inner placement segment 24 Inner flank section 25 Frame bodies / assembly aids 26 Support arm (movable / elastic) 27 Support ring 28 Support element 30 Actuating device, acting in radial direction from outside 30' Actuator, acting in radial direction from the inside A Rotation axis of the axle stub B Extension axis / central axis of the recording passage L Extension / length of the spring body W angular position QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] US 2007 / 0013171 A1

[0006]

Claims

[1] Axle assembly comprising a support body (2) with an axially extending receiving passage (3), a plurality of axially extending spring bodies (4) and a rocker arm body (5), wherein the rocker arm body (5) comprises an axle stub (6) with a polygonal cross section, and wherein the spring bodies (4) are positively received in a gap (10) between the axle stub (6) and the receiving passage (2) with a polygonal cross section in the intended assembled state in such a way that the axle stub (6) is mounted in the receiving passage (3) by means of the spring bodies (4) and is rotatable to a limited extent about an axis of rotation (A) with deformation of the spring bodies (4), characterized by that the axle assembly (1) has an adjusting device (30, 30') which is designed to locally change the width of the gap (10) so that the angular position (W) of the axis of rotation (A) of the axle stub (6) is adjustable relative to an extension axis (B) of the receiving passage (2). [2] Axle assembly according to claim 1, wherein the adjusting device (30, 30') comprises at least one pressure surface (8, 8') positionable in the radial direction (R), which bears against the spring body (4), in particular only locally along its extension (L). [3] Axle assembly according to one of claims 1 or 2, wherein the width of the gap (10) is variable at one or more locations. [4] Axle assembly according to one of the preceding claims, wherein the width of the gap (10) is variable to such an extent that an elastic prestress of at least one spring body (4) accommodated in the gap (10) [in the intended assembled state of the axle assembly] is locally generated or increased. [5] Axle assembly according to one of the preceding claims, wherein - The adjusting device (30) is designed to change the width of the gap (10) in the radial direction (R) from the outside, AND / OR wherein - The adjusting device (30') is designed to change the width of the gap (10) in the radial direction (R) from the inside. [6] Axle assembly according to one of the preceding claims, wherein one pressure surface (8, 8') or one pressure surface each (8, 8') - a part of the inner surface (11) of the receiving passage (2), OR - forms part of the outer surface (12) of the axle stub (6). [7] Axle assembly according to one of the preceding claims, wherein the adjusting device (30, 30') - an adjustable fastening means (13, 13') which urges and / or supports the pressure surface (8, 8') in the direction of the gap (10); AND / OR - comprises a frame body (25) which can be inserted into an opening (7a) of the receiving passage (3), wherein the frame body comprises at least one support arm (26) on which the pressure surface (8) is arranged. [8] Axle assembly according to one of the preceding claims, wherein the surface of a spring body (4) pointing in the radial direction (R) in the intended assembly state - a predominant area along the extension (L) of the spring body (4) in contact with the support body (1) and / or in contact with the axle stub (6) AND - a smaller proportion of the area along the extension (L) is in contact with a pressure surface (8, 8'). [9] Axle assembly according to one of the preceding claims, wherein a spring body (4) is received in the intended mounting position in an elastically (pre-)compressed position between, on the one hand, the inner surface (11) of the support body (2) and the outer surface (12) of the axle stub (6). [10] Axle assembly according to one of the preceding claims, wherein the spring bodies (4) are arranged such that they are further compressible upon rotation of the axle stub (6) about the axis of rotation (A) and generate a restoring force which urges the rocker arm body (5) in the direction of a reference position. [11] Axle assembly according to one of the preceding claims, wherein the axle assembly - is designed as a semi-axle with exactly one rocker arm body (5), OR - is designed as a solid axle with two rocker arm bodies (5) which are inserted into opposite openings (7) of the receiving passage (3). [12] Land vehicle, in particular road trailer, comprising a chassis and at least one axle assembly (1), wherein the axle assembly is designed according to one of the preceding claims.

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