Kingpin device

Abstract

A kingpin device (1), in particular a kingpin device (1) for an automatic coupling system, comprising a kingpin (10), a turntable (20) and a support structure (30), wherein the kingpin (10) extends in a kingpin direction (R10), the turntable (20) is mounted in a manner capable of rotating relative to the kingpin (10) around the kingpin direction (R10), in particular on a sliding bearing, the turntable (20) having an opening (22), through which the kingpin (10) extends, the support structure (30) extending in a radial direction (R), the support structure (30) comprising a fastening member (32) for indirectly and / or directly fastening and / or mounting a plug connector, the support structure (30) being in particular indirectly and / or directly fixed to the turntable (20) via a first end (34) of the support structure (30).

Description

Technical Field

[0001] The present invention relates to a kingpin device, in particular to a kingpin device for an automatic coupling system. Background Art

[0002] Kingpin devices are known in the prior art and are intended to be arranged on a trailer. Kingpin devices usually comprise a kingpin which is intended to be inserted into a fifth-wheel coupling device and to be reliably coupled there. This coupling allows the traction forces to be transmitted from the fifth-wheel device to the kingpin device. Kingpin devices known in the prior art are increasingly designed so that they are used in automatic coupling systems. In such automatic coupling systems, a plug is usually mounted in such a way that it can be rotated around the kingpin, wherein the plug is automatically connected to a complementary plug on the tractor during coupling. However, a problem with the devices known in the prior art is that these systems have a particularly high installation space requirement. Summary of the invention

[0003] It is therefore an object of the present invention to provide a kingpin device which is compact and requires only a small amount of installation space.

[0004] According to the invention, a kingpin device, in particular for an automatic coupling system, comprises a kingpin, a turntable and a support structure, wherein the kingpin extends in the kingpin direction, wherein the turntable is mounted in a manner that it can rotate relative to the kingpin about the kingpin direction, in particular on a plain bearing, wherein the turntable has an opening through which the kingpin extends, wherein the support structure extends in a radial direction, wherein the support structure comprises a fastening member for indirectly and / or directly fastening and / or for supporting a plug connector, wherein the support structure is in particular indirectly and / or directly fixed to the turntable with a first end of the support structure. The kingpin device according to the invention is intended to be mounted on a trailer, in particular a semitrailer. Such a trailer is fundamentally intended to be towed by means of a tractor. The towing is in particular carried out in the following manner: the kingpin of the kingpin device is inserted into a fifth wheel device of the tractor and coupled there, so that forces can be transmitted from the tractor via the kingpin to the trailer. In other words, this may mean that the kingpin of the kingpin device is used to transmit traction and / or thrust between the trailer and the tractor. In particular, the kingpin device is used for an automatic coupling system. In the sense of the present invention, an automatic coupling system is in particular a coupling system which is used and / or designed to transmit power energy, pneumatic energy and / or electrical energy or other energy or information signals between a tractor and a trailer by automatic connection of an energy or information line. The kingpin of the kingpin device according to the invention extends along the kingpin direction. In other words, this may mean that the kingpin direction is the direction that determines the length of the kingpin. In particular, the kingpin is at least partially rotationally symmetrical about the kingpin direction. The turntable of the kingpin device is mounted in a manner that can rotate around the kingpin direction, in particular by using a sliding bearing. The advantage obtained by mounting the turntable using a sliding bearing is that a particularly space-saving installation is achieved. Due to the rotatable mounting of the turntable relative to the kingpin, the support structure can be pivoted around the kingpin direction, so that the turntable can be pivoted, for example, in particular when turning. The turntable has an opening through which the kingpin extends and / or can extend. In other words, this may mean that the kingpin is at least partially guided through the turntable. In addition to the kingpin and the turntable, the kingpin device also includes a support structure. The support structure extends in a radial direction. In particular, the radial direction is perpendicular to the kingpin direction. The direction of extension of the support structure is in particular the direction in which the support structure extends. Alternatively or additionally, preferably, the direction of extension of the support structure can also be a direction that determines the length of the support structure. Advantageously, the support structure has a fastening member for indirectly and / or directly fastening and / or mounting a plug connector. The plug connector is in particular used for connecting and / or can be connected to a complementary designed plug on a tractor. In other words, this may mean that an automatic coupling system is formed or realized by the plug connector together with a complementary plug on the tractor. For example, the plug connector can have pneumatic, hydraulic and / or electrical plug contacts to establish an energy conducting connection with the tractor.The fastening and / or mounting of the connector on the support structure is achieved by fastening members of the support structure, wherein these fastening members can be formed as holes and / or protrusions and / or fixing surfaces, for example. In this context, fastening and / or mounting can be understood as the support structure being used to support or carry the connector. The support structure itself is connected to the turntable indirectly and / or directly, in particular, by means of a first end of the support structure. In particular, the first end of the support structure forms a distal end region of the support structure, wherein the first end is in particular a distal end region of the support structure facing the kingpin. Advantageously, the first end has a mounting opening for fixing. This fixing on the turntable can be achieved in particular by reversible fixing by means of screws. Alternatively or additionally, the support structure can also be preferably fixed to the turntable by material bonding, shape locking and / or force-fitting connection. In this context, fixing can be understood as one end of the support structure can be fixedly arranged relative to the turntable. In other words, this means that the turntable and the support structure can be fixed relative to each other. By arranging the support structure indirectly and / or directly on the turntable, a particularly compact kingpin device is still caused despite the support structure requiring only a small amount of installation space.

[0005] Advantageously, the support structure extends beyond the turntable in the radial direction. Extending beyond the turntable is to be understood as meaning that the support structure is further away from the kingpin in the radial direction than any part of the turntable. In particular, the support structure is designed to protrude radially further than the turntable, so that the maximum distance of the support structure from the kingpin or in the direction of the kingpin is twice the maximum distance of the turntable from the direction of the kingpin. By extending the support structure beyond the turntable in the radial direction, better accessibility of the fastening elements of the support structure can be achieved. This can therefore, in particular, improve or simplify the fixing and accessibility of the plug connector.

[0006] Advantageously, the minimum distance between the kingpin and the supporting structure, in particular between the kingpin and the first end of the supporting structure, is a maximum of 35 mm, preferably a maximum of 10 mm, and more preferably a maximum of 5 mm. Theoretically, the minimum distance is the minimum distance between the kingpin and the supporting structure. In the case of a minimum distance of a maximum of 35 mm between the kingpin and the supporting structure, a particularly compact kingpin device that can be easily installed can be achieved. In the case of a minimum distance of a maximum of 10 mm, the applicant surprisingly found that this arrangement leads to particularly advantageous vibration damping properties. In the case of a minimum distance of a maximum of 5 mm between the kingpin and the supporting structure, a particularly safe kingpin device can be achieved, because it is difficult to engage or squeeze into the gap between the kingpin and the supporting structure, especially at such a small distance. Therefore, a maximum value of 5 mm for the minimum distance increases the operational safety of the kingpin device.

[0007] Suitably, the ratio of the minimum distance between the kingpin and the support structure, in particular the connection point of the support structure, to the maximum diameter of the turntable is in the range of 0.002 to 0.3, preferably in the range of 0.005 to 0.2, more preferably in the range of 0.01 to 0.13. In particular, the maximum diameter of the turntable is the diameter of the largest outer dimension of the turntable. In the case of a ratio of the minimum distance between the kingpin and the support structure to the maximum diameter of the turntable in the range of 0.002 to 0.3, a particularly reliable fixation can be achieved, since in the case of this design a sufficiently large support surface is available for the support structure, so that a particularly low tilting support can be ensured. In the case of a ratio in the range of 0.005 to 0.2, the applicant surprisingly found that the support structure has a particularly low vibration behavior in operation. A ratio in the range of 0.01 to 0.13 results in a particularly space-saving kingpin arrangement. The connection point of the support structure is in particular the point at which the support structure is supported relative to the turntable.

[0008] Advantageously, the support structure, in particular the connection points of the support structure, are arranged and / or fixed so as not to be displaceable and / or fixed relative to the turntable. In this way, a particularly mechanically resilient kingpin arrangement can be achieved.

[0009] Preferably, the kingpin is at least partially arranged between the components of the support structure. In this way, a particularly compact design of the kingpin device can be achieved. "Between" can be understood as at least some parts of the support structure extending on both sides of the kingpin. In other words, the kingpin can thus be at least partially or at least partially surrounded by the support structure or extend between the components of the support structure.

[0010] Suitably, the support structure has two legs, wherein each leg is indirectly and / or directly fixed to the turntable, wherein, advantageously, the kingpin is at least partially arranged between the legs. By providing two legs or forming the support structure at least partially by two different legs, a particularly light support structure is obtained, which, however, still has a particularly high bending strength. This saves both material and weight, thereby forming a particularly light and resilient support structure. In particular, the two legs of the support structure are designed so that they limit the support structure in a direction perpendicular to the extension direction of the support structure. In other words, this may mean that the lateral boundaries of the support structure are formed by the legs. This results in a particularly bending-resistant support structure. By forming the kingpin device in such a way that the kingpin is at least partially arranged between the legs, a particularly compact and space-saving kingpin device is produced, because this makes optimal use of the available installation space. In order to further improve this utilization of the installation space, those surfaces of the support structure, in particular those formed closest to the kingpin, are formed to be complementary to the kingpin. Complementarity means, for example, that in the case of a kingpin which is rotationally symmetrical about the kingpin direction, these surfaces of the support structure are in particular circular and that the center of this circle is in particular in the kingpin direction. In other words, this means that the surface closest to the kingpin has the same center of curvature as the surface closest and bounding outwards of the kingpin. This allows the support structure to be arranged particularly close to the kingpin, resulting in a particularly compact kingpin arrangement.

[0011] Advantageously, in a support structure with two legs, each of the two legs forms a part of a first end of the support structure and is fixedly connected to the turntable at the respective first end. In other words, this may mean that each leg may form its own part of the first end of the support structure, wherein each of these parts is fixed to the turntable. This results in a particularly mechanically strong support of the support structure.

[0012] Advantageously, the support structure is mirror-symmetrical, in particular about a symmetry plane defined by the kingpin direction and the radial direction. By forming the support structure as a mirror-symmetrical structure, the support structure can be manufactured particularly easily. In addition, this type of design also has advantages in terms of weight distribution.

[0013] Preferably, the support structure is at least partially V-shaped, in particular pointing toward the kingpin. A partially V-shaped design means that the outer contour of the support structure is at least partially inclined with respect to the radial direction and / or the extension direction of the support structure. This facilitates the alignment of the support structure when driving into a fifth wheel hitch on a tractor. It is particularly preferred that this at least partially V-shaped cross section of the support structure is formed in such a way that the V-shape points in the direction of the kingpin or the kingpin in the shape of an arrow.

[0014] Advantageously, the outer diameter of the turntable is at most 400 mm, preferably at most 300 mm, particularly preferably at most 250 mm. The outer diameter of the turntable is in particular the maximum possible outer diameter of the turntable. Advantageously, the center of the turntable is located in the direction of the kingpin. In the case of an outer diameter of the turntable of at most 400 mm, a particularly good compromise is achieved between the mechanical load capacity of the turntable and / or the entire kingpin device and the installation space requirement. In order to achieve a particularly simple and cost-effective production of the turntable, the maximum outer diameter of the turntable should be at most 300 mm. In order to achieve a particularly compact kingpin device, the maximum outer diameter of the turntable should be 250 mm. For example, such a small outer diameter of the turntable can be achieved by mounting the turntable on a sliding bearing. Alternatively or additionally, such a compact arrangement can also be preferably achieved by forming the turntable, for example, from brass and / or bronze and / or another material capable of sliding bearings. This is because this type of construction allows the kingpin device to dispense with a roller bearing arrangement that requires a lot of installation space. However, in this case, it should be noted that although the sliding bearing turntable can be designed very small, it does not necessarily have to be designed very small. In other words, this means that the turntable on the sliding bearing can also have a maximum outer diameter of more than 300 mm.

[0015] Advantageously, the turntable is at least partially made of brass and / or bronze. This makes the turntable particularly easy to rotate, since brass and / or bronze have particularly good tribological properties, in particular with regard to the friction coefficients that occur and / or with regard to wear resistance. By using brass and / or bronze as turntable material, in particular the use of rolling bearings can be omitted. Advantageously, at least a portion of the turntable that is in contact with other components for support is made of brass and / or bronze. In this way, the good tribological properties of brass and / or bronze can be ideally utilized. Alternatively, preferably, the entire turntable can be made of brass and / or bronze. This results in the turntable being particularly easy to manufacture.

[0016] Advantageously, the turntable has at least one hole, wherein the hole is designed such that a cable and / or a conductor is guided through the hole. In particular, the hole is designed such that it allows the cable and / or the conductor to be guided from the upper side to the lower side of the turntable. In other words, this may mean that the hole completely penetrates the turntable, in particular in the direction of the kingpin. Since the cable can be guided directly through the turntable, particularly short cable and / or conductor lengths can be achieved, which can save costs.

[0017] In an advantageous embodiment, the hole opens between parts of the support structure, in particular between two legs of the support structure. By providing the opening of the hole between parts of the support structure, in particular between the legs, the cable guided through the hole is mechanically protected from external loads. In other words, this means that by providing the opening between parts of the support structure, in particular between the two legs, if the support structure is twisted, the legs or the support structure will first come into contact with the "blocking part" before the cables and / or wires are damaged by this "blocking part". Thus, by the through-opening between parts of the support structure, in particular between the two legs, a particularly operationally safe kingpin device is achieved.

[0018] Suitably, the kingpin arrangement comprises a dome, wherein the kingpin is indirectly and / or directly attached to the dome, and wherein, advantageously, the dome has a mounting surface suitable for fixing the dome to the trailer. In particular, the dome serves to directly and / or indirectly fix the kingpin, in particular by material engagement and / or force fit and / or form locking. In addition, the dome is able to transfer loads from the kingpin to the trailer via the mounting surface of the dome. Advantageously, the mounting surface of the dome has a normal parallel to the kingpin direction. In this way, a particularly simple and safe and compact spindle arrangement can be achieved, which enables a particularly safe support of the kingpin. Advantageously, the dome is formed in one piece. This can increase the mechanical load capacity of the dome.

[0019] Advantageously, the dome is designed so that it supports the turntable directly and / or indirectly relative to the trailer.For this purpose, the dome has in particular a supporting surface which is in direct and / or indirect contact with the turntable and / or is used to support the turntable.

[0020] Advantageously, the kingpin arrangement comprises an end plate, wherein the end plate is arranged indirectly and / or directly on the dome, wherein the turntable is arranged at least partially between the end plate and the dome, in particular, at least one bearing portion of the turntable located on the outside in the radial direction is arranged between the dome and the end plate, so that the mobility of the turntable in the kingpin direction and in the radial direction is prevented by the dome and / or by the end plate in a form-fitting manner. This direct form-fitting limitation of the mobility of the turntable enables a particularly compact arrangement. Advantageously, the turntable is arranged such that the bearing portion is arranged between the dome and the end plate in a direction parallel to the kingpin direction. In particular, the end plate has an inner opening which is rotationally symmetrical with respect to the kingpin direction, and wherein the turntable and / or the kingpin extends at least partially through this inner opening of the end plate. In this way, a particularly compact kingpin arrangement or turntable bearing can be achieved.

[0021] In an advantageous embodiment, the turntable is mounted on a sliding bearing relative to the end plate and / or relative to the dome on a sliding bearing. Due to the sliding bearing of the turntable relative to the end plate and / or relative to the dome, a particularly space-saving kingpin arrangement can be achieved, since space-consuming roller bearing arrangements can be omitted. These roller bearing arrangements are particularly space-intensive not only in the radial direction but also in the kingpin direction, so that the omission of these roller bearing arrangements results in a very compact kingpin arrangement.

[0022] Advantageously, a sliding ring is arranged between the dome and the turntable and / or a sliding ring is arranged between the turntable and the end plate. By using the sliding ring, a particularly low-wear and low-friction sliding bearing is obtained. Furthermore, this type of sliding bearing has the advantage that the maintenance effort or maintenance costs of such a sliding bearing are very low due to the replacement of the low-cost sliding rings, since particularly expensive parts such as the turntable and / or the end plate do not have to be completely replaced, but worn sliding rings can be completely replaced.

[0023] Advantageously, at least one slide ring and / or a plurality of slide rings are at least partially (preferably completely) made of plastic, in particular thermoplastic. The use of plastic in the slide ring and / or the complete formation of the slide ring from plastic results in a particularly economical slide ring. Thermoplastic slide rings have particularly good tribological properties, in particular with regard to the combination of wear and friction coefficient.

[0024] Advantageously, the wrap angle of the support structure measured from the kingpin direction and in a plane having a normal parallel to the kingpin direction is in a range of 70° to 190°, preferably in a range of 90° to 150°, particularly preferably in a range of 110° to 140°. The wrap angle is in particular the angle which surrounds the support structure when viewed from the kingpin direction. For example, the wrap angle is the opening angle of a V, the intersection of the legs of which is located in the kingpin direction and whose legs just completely surround the support structure. In the case of a wrap angle of 70° to 90°, a particularly secure fixing of the support structure to the turntable can be achieved, since in this case a flat connection possibility can be formed between turntable and support structure. On the other hand, a wrap angle in the range of 110° to 140° results in a particularly space-saving kingpin arrangement. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Further advantages and features of the invention are given in the following description with reference to the accompanying drawings. Individual features of the illustrated embodiments can also be used in other embodiments, unless explicitly excluded.

[0026] Figure 1 A perspective view of a kingpin arrangement is shown.

[0027] Figure 2 A view of the kingpin arrangement in the kingpin direction is shown.

[0028] Figure 3 A cross-sectional view of the kingpin arrangement is shown. DETAILED DESCRIPTION

[0029] Figure 1 A kingpin device 1 is shown. The kingpin device 1 has a kingpin 10, a turntable 20 and a support structure 30. The kingpin 10 extends through the opening 22. The support structure 30 is reversibly fixed to the turntable 20 by a first end 34. At the further distal end of the support structure 30, the support structure has a fastening member 32 in the form of a hole, by which a plug connector for an automatic coupling system can be fixed to the support structure 30. The V-shaped area extends between the first end 34 of the support structure 30 and the further distal end of the support structure 30. The support structure 30 is designed so that it has two legs 36, which are connected to each other by an intermediate element.

[0030] Figure 2 A view of the kingpin device in the direction of the kingpin direction R10 is shown. The kingpin direction R10 is the extension direction of the kingpin 10 and in particular the kingpin 10 is at least partially rotationally symmetrical about this direction. In addition to the kingpin, the kingpin device according to the invention also has a turntable 20 and a support structure 30. The support structure 30 extends in the radial direction R and also has two laterally adjacent legs 36, which are at least partially V-shaped. Figure 2 As can be seen from FIG. 1 , the V-shaped portion is designed to face the kingpin 10. Figure 2 It can be seen in FIG. 1 that the kingpin 10 is at least partially arranged between components of the support structure 30, since at least some parts of the support structure 30 extend to the kingpin 10 on both sides. Figure 2 In the embodiment shown, the support structure 30 is formed so that each leg 36 forms a first end 34 fixed to the turntable 22. The turntable 20 has a hole 24, which opens between the two legs 36. The cable is guided in or through this hole 24. The turntable 20 is firmly fixed by an end plate 50 to prevent movement in the kingpin direction. Figure 2 In the embodiment shown, a wrap angle W around the support structure 30 is also visible.

[0031] Figure 3 A cross-sectional view of a portion of a kingpin device is shown. The section plane is designed so that it has a normal parallel to the radial direction R. Figure 3 In the illustrated embodiment, the kingpin device has a dome 40, wherein the bearing portion 26 of the turntable 20 is positioned between the dome 40 and the end plate 50. Figure 3As shown, the turntable 20 has an opening 22 through which the kingpin 10 extending in the kingpin direction R10 extends. The dome 40 serves to support the kingpin 10 as well as the turntable 20 and the end plate 50 relative to the trailer or the floor of the trailer.

[0032] Reference numerals list

[0033] 1 Kingpin device

[0034] 10 Kingpin

[0035] 20 Turntable

[0036] 22 Opening

[0037] 24 holes

[0038] 26 Turntable bearing

[0039] 30 Support structure

[0040] 32 Fastening components

[0041] 34 First end

[0042] 36 Legs

[0043] 40 Dome

[0044] 50 End plate

[0045] R Radial direction

[0046] R10 Kingpin direction

[0047] W Wrap Angle

Claims

1. A kingpin device (1), comprising a kingpin (10), a turntable (20) and a supporting structure (30), in, The main pin (10) extends in the axial direction of the main pin, The turntable (20) is installed in a manner to be rotatable around the axial direction relative to the main pin (10). The turntable (20) has an opening (22), and the main pin (10) extends through the opening. wherein the support structure (30) extends in a radial direction (R) of the kingpin, wherein the support structure (30) comprises a fastening member (32) for indirectly and / or directly fastening and / or mounting the plug connector, and wherein the support structure (30) is indirectly and / or directly fixed to the turntable (20), Wherein, the support structure (30) has two legs (36), wherein each of the legs (36) is indirectly and / or directly fixed to the turntable (20), wherein the king pin (10) is at least partially arranged between the legs (36), Wherein, the support structure (30) is indirectly and / or directly fixed to the turntable (20) via a first end (34) of the support structure (30).

2. The kingpin device (1) according to claim 1, in, The turntable (20) is mounted on a sliding bearing.

3. The kingpin device (1) according to claim 1, in, The support structure (30) extends in the radial direction (R) beyond the turntable (20).

4. The kingpin device (1) according to any one of claims 1 to 3, in, The minimum distance between the main pin (10) and the supporting structure (30) is at most 35 mm.

5. The kingpin device (1) according to claim 4, in, The minimum distance is the minimum distance between the main pin (10) and the first end (34) of the support structure (30).

6. The kingpin device (1) according to claim 4, in, The minimum distance is at most 10 mm.

7. The kingpin device (1) according to claim 4, in, The minimum distance is at most 5 mm.

8. The kingpin device (1) according to any one of claims 1 to 3, in, The ratio of the minimum distance between the main pin (10) and the support structure (30) to the maximum diameter of the turntable (20) is in the range of 0.002 to 0.

3.

9. The kingpin device (1) according to claim 8, in, The ratio is in the range of 0.005 to 0.

2.

10. The kingpin device (1) according to claim 8, in, The ratio is between 0.01 and 0.

13.

11. The kingpin device (1) according to any one of claims 1 to 3, in, The support structure (30) is at least partially formed in a V-shape.

12. The kingpin device (1) according to claim 11, in, The V-shape points towards the kingpin (10).

13. The kingpin device (1) according to any one of claims 1 to 3, in, The outer diameter of the turntable (20) is at most 400 mm.

14. The kingpin device (1) according to claim 13, in, The outer diameter of the turntable (20) is at most 300 mm.

15. The kingpin device (1) according to claim 13, in, The outer diameter of the turntable (20) is at most 250 mm.

16. The kingpin device (1) according to any one of claims 1 to 3, in, The turntable (20) is at least partially made of brass and / or bronze.

17. The kingpin device (1) according to any one of claims 1 to 3, in, The turntable (20) has at least one hole (24), The hole (24) is designed to allow cables and / or wires to be guided through the hole.

18. The kingpin device (1) according to claim 17, in, The hole (24) opens between the two legs (36).

19. The kingpin device (1) according to any one of claims 1 to 3, in, The kingpin device (1) comprises a dome (40), wherein the kingpin (10) is indirectly and / or directly attached to the dome (40), and The dome (40) has a mounting surface suitable for fixing the dome (40) to a trailer.

20. The kingpin device (1) according to claim 19, in, The kingpin device (1) comprises an end plate (50), wherein the end plate (50) is indirectly and / or directly arranged at the dome (40), and Wherein, the turntable (20) is at least partially arranged between the end plate (50) and the dome (40).

21. The kingpin device (1) according to claim 20, in, At least one bearing portion (26) of the turntable (20) located on the outside in the radial direction (R) is arranged between the dome (40) and the end plate (50), so that the mobility of the turntable (20) in the axial direction and the radial direction (R) is prevented in a shape-fitting manner by the dome (40) and / or by the end plate (50).

22. The kingpin device (1) according to claim 20, in, The turntable (20) is mounted on a sliding bearing relative to the end plate (50), and / or wherein the turntable (20) is mounted on a sliding bearing relative to the dome (40).

23. The kingpin device (1) according to claim 20, in, A sliding ring is provided between the dome (40) and the turntable (20), and / or Wherein, a sliding ring is arranged between the turntable (20) and the end plate (50).

24. The kingpin device (1) according to any one of claims 1 to 3, in, The wrap angle of the support structure (30) measured from the axial direction and in a plane having a normal parallel to the axial direction is in the range of 70° to 190°.

25. The kingpin device (1) according to claim 24, in, The wrap angle is in the range of 90° to 150°.

26. The kingpin device (1) according to claim 24, in, The wrap angle is in the range of 110° to 140°.

27. The kingpin device (1) according to any one of claims 1 to 3, in, The kingpin device (1) is used in an automatic coupling system.

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