EP4688469A1 - Dételage d'une remorque d'un tracteur - Google Patents

Dételage d'une remorque d'un tracteur

Info

Publication number
EP4688469A1
EP4688469A1 EP24716752.1A EP24716752A EP4688469A1 EP 4688469 A1 EP4688469 A1 EP 4688469A1 EP 24716752 A EP24716752 A EP 24716752A EP 4688469 A1 EP4688469 A1 EP 4688469A1
Authority
EP
European Patent Office
Prior art keywords
trailer
tractor
load
support leg
acting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP24716752.1A
Other languages
German (de)
English (en)
Inventor
Rüdiger Meyer
Timo Isermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF CV Systems Global GmbH
Original Assignee
ZF CV Systems Global GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZF CV Systems Global GmbH filed Critical ZF CV Systems Global GmbH
Publication of EP4688469A1 publication Critical patent/EP4688469A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
    • B60S9/14—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for both lifting and manoeuvring
    • B60S9/205—Power driven manoeuvring fittings, e.g. reciprocably driven steppers or rotatably driven cams
    • B60S9/21—Power driven manoeuvring fittings, e.g. reciprocably driven steppers or rotatably driven cams comprising a rotatably driven auxiliary wheel or endless track, e.g. driven by ground wheel
    • B60S9/215—Power driven manoeuvring fittings, e.g. reciprocably driven steppers or rotatably driven cams comprising a rotatably driven auxiliary wheel or endless track, e.g. driven by ground wheel driven by an auxiliary motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/24—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
    • B60D1/248—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for measuring, indicating or displaying the weight
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/24—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
    • B60D1/36—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for facilitating connection, e.g. hitch catchers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/58—Auxiliary devices
    • B60D1/62—Auxiliary devices involving supply lines, electric circuits or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D53/00—Tractor-trailer combinations; Road trains
    • B62D53/04—Tractor-trailer combinations; Road trains comprising a vehicle carrying an essential part of the other vehicle's load by having supporting means for the front or rear part of the other vehicle
    • B62D53/08—Fifth wheel traction couplings

Definitions

  • the present invention relates to a commercial vehicle comprising a tractor with a trailer.
  • the present invention relates to the uncoupling of the trailer from the tractor.
  • a commercial trailer for road transport having at least one axle with wheels at its rear end, is adapted at its front end to rest on and be towed by a tractor unit.
  • Such a trailer is also known as a semi-trailer trailer, semi-trailer or semi-trailer.
  • the tractor unit can also be called a tractor unit.
  • To separate the semi-trailer from the tractor unit support legs in the front area of the trailer can be extended downwards to take on its weight load. A towing connection to the tractor unit can then be separated and the tractor unit removed.
  • WO 2022/077063 A1 relates to a technology for loading or unloading a vehicle trailer with loading ramps that are attached to the rear of the vehicle. In order to be able to drive another vehicle safely over the loading ramps even on sloping ground, it is proposed to make the lengths of the loading ramps as well as a pitch angle and a roll angle of the vehicle trailer controllable.
  • a method for assisting a decoupling operation of a tractor from a trailer comprises steps of determining a first load of the trailer acting on the left support leg; determining a second load of the trailer acting on the right support leg; individually extending a support leg whose determined load is below an associated predetermined threshold; and enabling the opening of a coupling of the tractor to the trailer if a load of the trailer acting on the tractor is less than a predetermined further threshold.
  • An uncoupling process can include uncoupling the tractor from the trailer, i.e. separating a traction-locking connection between the tractor and the trailer.
  • a fifth wheel coupling can be attached to the tractor and a king pin to the trailer, and the uncoupling can include opening the fifth wheel coupling so that the king pin can be removed from the fifth wheel coupling. The tractor can then drive away from the trailer.
  • the uncoupling of the tractor can only be released if the amount of deviation between the loads acting on the support legs falls below a predetermined threshold. This ensures in particular that the trailer is not tilted too much sideways around its longitudinal axis when uncoupling.
  • the trailer can also be parked safely if a The ground is uneven and the lengths that the support legs have to overcome are unequal.
  • the support legs can be extended in such a way that the uncoupling of the tractor is only permitted if the amount of deviation between the effective lengths of the support legs is below a predetermined threshold. If the deviation exceeds the threshold, the trailer is too inclined relative to gravity. If the supports have to be extended very differently in order to achieve the same load, this is an indication that the tractor is at an angle. It is therefore sensible to check the difference in the support stroke and prevent uncoupling if the value is high.
  • the support legs can be extended in such a way that a deviation of an absolute roll angle of the trailer from the vertical falls below a predetermined threshold value.
  • An absolute roll angle of a vehicle is usually defined as the orientation of the vehicle around its longitudinal axis.
  • a vertical line which corresponds to the direction of gravity, is usually used as a reference. If the vehicle is upright, its absolute roll angle is 0°. By monitoring the absolute roll angle, it is possible to prevent the trailer from being separated from the tractor unit when the vehicle is tilted too far.
  • the support legs can be extended in such a way that the amount of a relative roll angle between the trailer and the tractor falls below a predetermined threshold.
  • a deviation in the roll angles of the vehicles can occur if the fifth wheel coupling is designed to allow a deviation when coupled.
  • a relative roll angle between the tractor and the trailer refers to a deviation in the alignment of the two vehicles about their roll axes. In other words, the relative roll angle can indicate how much one of the vehicles is twisted relative to the other.
  • the relative roll angle can also be determined if the longitudinal axes of the vehicles do not intersect at a point or are offset from each other.
  • a load acting on a support leg can be determined on the basis of a load acting on a wheel that is mounted on the same side as the support leg.
  • the wheel can be comprised of either the tractor or the trailer.
  • a load acting on a left support leg can depend on a load acting on a left wheel of the trailer or a left wheel of the tractor.
  • a load acting on a right support leg of the trailer can be dependent on a load acting on a right wheel of the trailer or a right wheel of the tractor.
  • a control system for supporting a decoupling process of a semitrailer with a left and a right support leg from a tractor comprises: a first sensing device for determining loads of the semitrailer which act on the support legs respectively; a left actuator for extending the left support leg; a right actuator for extending the right support leg; a control device for individually controlling the extension of a support leg whose associated load is below a predetermined threshold value; and a second scanning device for determining a load of the semi-trailer acting on the tractor.
  • the control device is designed to enable opening of a coupling between the tractor and the semi-trailer if the load of the semi-trailer acting on the tractor is less than a predetermined further threshold value.
  • the control device can be set up to carry out a method described herein in whole or in part.
  • the processing device can be implemented electronically and comprise a programmable microcomputer or microcontroller and the method can be in the form of a computer program product with program code means.
  • the computer program product can also be stored on a computer-readable data carrier. Additional features or advantages of the method can be transferred to the device or vice versa.
  • a vehicle comprises a control system as described herein.
  • the vehicle may in particular comprise a tractor or a trailer.
  • Yet another aspect of the present invention relates to a vehicle system with a tractor and a trailer.
  • the vehicle system which can also be called a semitrailer, comprises a control system described herein.
  • the control system can be set up to support an automatic uncoupling process of the trailer from the tractor.
  • Components included in the control system can each be provided alternatively on the tractor and/or on the trailer.
  • a load acting on a support leg can be determined on the basis of a load acting on a wheel of the trailer.
  • a load acting on a wheel mounted on the same side as the support leg can be determined.
  • a load acting on both support legs together can be determined on the basis of a total load, less a load acting on the wheels of the trailer.
  • Figure 1 shows a vehicle system with a tractor and a trailer
  • Figure 2 shows an exemplary relative position of a tractor unit in relation to a trailer
  • FIG. 3 a control system
  • Figure 4 shows a flow chart of a method.
  • Figure 1 shows a vehicle system 100 that includes a tractor 105 and a trailer 110.
  • the tractor 105 can be separated from the trailer 110, for example to be connected to another trailer 110.
  • a vertical broken line indicates at which point the vehicles 105, 110 can be separated from one another.
  • Connecting the vehicles 105, 110 is referred to as coupling or linking, separating them as uncoupling.
  • the vehicles 105, 110 stand on a surface 115 that is ideally flat and horizontal, but in practice is inclined, uneven or can bear different loads.
  • a technique described here relates to an uncoupling process between the vehicles 105, 110 even under such difficult conditions.
  • the trailer 110 is supported in such a way that the tractor unit 105 can be uncoupled and driven away from the trailer 110.
  • the absolute roll angles 205 are opposite to one another, whereby the relative roll angle 210 can be determined as the deviation of the absolute roll angles 205. If the relative rotation is strong enough so that an amount of the relative roll angle 210 exceeds a predetermined threshold value, large forces can occur when the tractor unit 105 is uncoupled from the trailer 110, which can endanger the stability of the vehicles 105, 110.
  • a relative height 215 between the tractor 105 and the trailer 110 is shown here as the vertical distance between the longitudinal axes 202 of the vehicles 105 and 110. If the tractor 105 carries the load of the trailer 110, the relative height 215 is zero. To uncouple, the tractor 105 can be lowered while the trailer 110 is supported on support legs. The relative height 215 assumes a value that is below a predetermined maximum value. After separating the fifth wheel coupling, the tractor 105 can be driven away from the trailer 110.
  • the longitudinal axes of the vehicles 105, 110 are rarely exactly aligned with one another, but often form an angle with one another or are offset horizontally by a certain amount.
  • the determination of the relative roll angle 210 or the relative height 215 in the area of a coupling device between the tractor 105 and the trailer 110 can nevertheless be carried out in a manner described herein. Smaller disturbances or inconsistencies in the determination of the relative roll angle or the relative height can be neglected.
  • a representation of values and their comparison is shown in the right-hand area of Figure 2.
  • a value 225 is determined on a predetermined scale 220.
  • a value 225 that lies above the line marked zero is positive, a value 225 that lies below it is negative.
  • An amount 230 of a positive value 225 corresponds to the unchanged value 225; that of a negative value 225 corresponds to its value 225 multiplied by (-1).
  • a value 225 can be compared with a range 235. In this case, the value 225 can relate in particular to a load. During the comparison, it can be determined whether the value 225 is inside or outside the range 235. Limits of the range 235 can be included in the range 235 or excluded from it.
  • a value 225 can also be compared with a threshold value 240. In this case, it can be determined whether the value 225 is below, at or above the threshold value 240.
  • a deviation 245 between a value 225 and another value, for example a threshold value 240, can be determined as a numerical difference between corresponding numerical values of the values 225. In various embodiments, the deviation 245 can be determined absolutely or as an amount 230.
  • FIG. 3 shows a control system 300 for supporting an automatic uncoupling process of a tractor 105 from a trailer 110.
  • the control system 300 is, for example, largely symmetrically constructed in that some components are provided on both the tractor 105 and the trailer 110. It may be sufficient to provide such a component only on one side, i.e. only on the tractor 105 or on the trailer 110. It should also be noted that some components that have a similar effect with respect to the present invention can be implemented differently on the tractor 105 and the trailer 110, as will be described in more detail below.
  • the control system 300 on the tractor unit 105 includes a control device 305, a first sensor 310, a second sensor 315, and a first actuator 320 and a second actuator 325.
  • a control device 305 a first sensor 310, a second sensor 315, and a first actuator 320 and a second actuator 325.
  • only one sensor 310, 315 or only one actuator 320, 325 is provided.
  • an interface 330 is provided for communication with a component on the trailer 110.
  • the interface 330 can be implemented wired or wirelessly.
  • the control device 305 may comprise a conventional control device with a processing device.
  • the control device 305 is configured to perform tasks other than those described herein. It is also preferred that the control device 305 is equipped with a further component on board the Tractor 105 is connected, in particular to allow interaction with the other component or a person.
  • the control device 305 is further preferably designed to output a warning signal.
  • the warning signal can be output to a control unit or control system via an interface. In another embodiment, the warning signal can be output to a person in the area of the vehicle system 100, in particular to a driver of the tractor 105.
  • the first sensor 310 is preferably fixedly attached to the tractor 105 and designed to scan the trailer 110. The scanning is further preferably carried out without contact, for example by means of an ultrasonic sensor, a radar or a LiDAR sensor. A signal generator, a marking or a reflective element is optionally attached to the trailer 110 in order to facilitate scanning by the first sensor 310. A marking can consist of a retroreflective material, for example.
  • the first sensor 310 can determine a relative orientation of the trailer 110 with respect to the tractor 105.
  • the first sensor 310 is preferably provided in the region of a coupling device between the tractor 105 and the trailer 110.
  • the second sensor 315 may comprise an acceleration sensor, an inertial platform or a similar sensor that is configured to determine an absolute roll angle of the tractor 105 with respect to a gravitational field of the earth.
  • the second sensor 315 may be sensitive about several axes and thus also determine a pitch angle or a yaw angle of the tractor 105.
  • the first actuator 320 is designed to control a height of a rear end of the tractor 105.
  • two first actuators 320 are provided, which can be operated independently of one another in order to raise or lower the rear end of the tractor 105 either only on the left or only on the right.
  • the first actuator 320 is shown as an air bellows of a pneumatic chassis.
  • the air bellows 320 elastically supports a wheel 322 of the tractor 105 and can control a height of the towing vehicle 105 above a surface on which the wheel 322 is standing.
  • the second actuator 325 is designed to influence a height and/or a roll angle of a coupling element for the semitrailer 110 on the tractor 105.
  • the coupling element comprises, for example, a fifth wheel plate 335, which is preferably designed as a fifth wheel coupling plate.
  • the second actuator 325 comprises, for example, two pneumatic or hydraulic actuators, one of which is provided on the left and one on the right side of the tractor 105. Other embodiments are also possible here.
  • a control device 305, a first sensor 310, a second sensor 315 and a first actuator 320 are provided on the trailer 110, corresponding to the tractor 105. Functions of these components are described with reference to the components on the tractor 105 and can be used accordingly on the trailer 110.
  • Two support legs 340 can be provided on the semi-trailer 110, one of which is attached to the front left in the direction of travel and the other to the front right in the direction of travel.
  • the support legs 340 are designed to support a load in a front area of the semi-trailer 110 against the ground 115 when the front of the semi-trailer 110 is not resting on the fifth wheel plate 335 of the tractor unit 105.
  • a support leg 340 comprises an actuator 342 in order to extend or retract it, for example pneumatically, hydraulically or by electric motor.
  • An effective length 344 of the support leg 340 can be changed in the vertical direction.
  • a distance between a chassis of the semi-trailer 110 and the ground can be controlled by actuating the actuator 342. It is particularly preferred that the left support leg 340 and the right support leg 340 can each be extended and retracted independently of one another. Even more preferably, an associated load sensor 345 is provided on each of the support legs 340, which is designed to determine a load of the trailer 110 acting on the support leg 340.
  • FIG. 4 shows a flow chart of a method 400.
  • the method 400 can be carried out by means of one or more interconnected control devices 405 of a vehicle system 100 and is designed to support a decoupling process of a tractor 110 from a trailer 115.
  • a request for automatic uncoupling of a tractor 105 from a trailer 110 can be determined.
  • the request can be provided, for example, by a person or a control system on board one of the vehicles 105, 110.
  • the tractor 105 and the trailer 110 are preferably connected to one another in a traction-locking manner, and a front end of the trailer 110 rests on a coupling device, in particular a fifth wheel plate 335, on a rear end of the tractor 105.
  • the vehicles 105, 110 are stationary on the ground 115.
  • a manually performed uncoupling process can be determined or started in this step.
  • support legs 340 of the trailer 110 can be extended.
  • the aim of the extension is to support a load of the trailer 110 at its front end against the ground 115 so that the tractor 105 can be relieved.
  • the extension preferably takes place by controlling actuators 342 of the support legs 340 accordingly.
  • a step 415 effective loads of the trailer 110 on a right and a left side can be determined.
  • a first determined load acts on the left support leg 340, a second load on the right support leg 340.
  • the first and second loads can each be determined by means of an associated load sensor 345 on the respective support leg 340.
  • the first or second load can be determined on the basis of a total load of the trailer 110 minus loads that act on wheels of the trailer 110. This determination can be carried out summarily for both sides or separately for the right and left sides.
  • Loads acting on the wheels can be determined, for example, via pneumatic pressures of an air suspension with which a chassis of the trailer 110 is supported relative to the wheels.
  • the support legs 340 are initially extended simultaneously to such an extent that they each come into contact with the ground 115. It can be determined that a support leg 340 has reached the ground 115 when a load acting on the support leg 340 exceeds an associated first threshold value 240 . Usually, both support legs 340 are assigned the same first threshold values 240. If the ground 115 is uneven, the support legs 340 may have to bridge different vertical heights before the transmitted load reaches the first threshold value 240. Accordingly, the extension of the left support leg 340 and the extension of the right support leg 340 may take different amounts of time.
  • the support legs 340 can then be extended further to relieve the load on the tractor 105.
  • a step 420 it can be determined whether the load acting on the left support leg 340 is greater than the load acting on the right support leg 340.
  • the right support leg 340 can be extended further while the left support leg 340 is stopped.
  • the left support leg 340 can be extended while the right support leg 340 is stopped. In other words, the support leg 340 that is currently carrying the smaller load can be extended further.
  • the absolute roll angle 210 of the trailer 110 with respect to gravity should be substantially zero.
  • the absolute roll angle 210 may deviate from zero, for example, if one of the support legs 340 cannot be extended further before the support legs 340 have taken on a sufficient load.
  • the absolute roll angle 210 of the trailer 110 can therefore be determined by means of one or more of the sensors 310, 315. If an amount of the absolute roll angle 210 compared to the vertical or gravity exceeds an assigned threshold value 240, a warning signal can be issued. In this case, the method 400 can also be aborted in a step 450, as described in more detail below. Alternatively, an attempt can be made to minimize the absolute roll angle 210 by actuating the support legs 340 appropriately. A predetermined inequality between the loads acting on the support legs 340 can be accepted. If the inequality between the support loads or the deviation of the roll angle of the trailer 110 from the vertical is too large, the method 400 can be aborted in step 450.
  • the trailer 110 can be essentially vertical if the support loads on the support legs 340 are equal. However, the tractor 105 can be aligned with respect to the ground 115 so that a relative roll angle 210 can be established between the tractor 105 and the trailer 110.
  • the relative roll angle 210 between the tractor 105 and the trailer 110 can therefore be monitored. If an amount of the relative roll angle 210 exceeds an associated, predetermined threshold value 240, a warning signal can be issued. If an actuator 325 is available on the tractor 105, this can be controlled to pivot the tractor sideways and minimize the relative roll angle 210.
  • the tractor 105 can also be raised laterally to the left or right to reduce the relative roll angle 210.
  • the support legs 340 can also be actuated to reduce the relative roll angle 210.
  • One of the compensation measures can accept a predetermined inequality between loads acting on the support legs 340. If the relative roll angle 210 or the inequality is too large, the method 400 can be aborted in step 450.
  • the extension of the support legs 340 can be terminated when loads supported by the support legs 340 each exceed associated second threshold values 240.
  • the second threshold values 240 are preferably selected to be equal.
  • the support legs 340 can also be extended simultaneously while their respective loads are between the associated first and the associated second threshold value 240. The extension of a support leg 340 can be terminated when its supported load exceeds the associated second threshold value 240.
  • the extension of the support legs 340 can be terminated in a step 435 depending on a load acting on the tractor 105.
  • a corresponding sensor on the fifth wheel plate 435 of the tractor can be used to determine the load.
  • the load acting on the tractor 105 can be determined on the basis of a pneumatic pressure in an air suspension of wheels, in particular rear wheels, of the tractor 105.
  • a load of the tractor 105 can be deducted from a load determined in this way in order to determine the load of the trailer.
  • lever ratios between rear wheels of the tractor 105, support legs 340 and rear wheels of the trailer 110 can be taken into account in order to determine the load of the trailer 110 acting on the support legs 340 on the basis of a wheel or axle load.
  • the support legs 340 can be stopped in a step 440.
  • a lock between the tractor 105 and the trailer 110 can be released so that it can be released.
  • the tractor 105 can be uncoupled from the trailer 110 manually or automatically. If the third threshold value 240 is greater than zero, the tractor 105 can be lowered in order to be as completely free as possible from the support load of the trailer 110. The tractor 105 can then be driven forward away from the trailer 110.
  • step 435 If it was determined in step 435 that a load of the trailer 110 is still resting on the tractor 105 that exceeds the third threshold value 240, then a check can be made in a step 445 as to whether a maximum adjustment range of the control system 400 has been reached. This can be the case in particular if one of the support legs 340 can no longer be extended. If this is not the case, the method 400 can continue in step 415.
  • the extension of the support legs 340 can be terminated in a step 450.
  • the method 400 can end unsuccessfully in a step 455.
  • the tractor 105 and the trailer 110 are still coupled to one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Vehicle Body Suspensions (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Regulating Braking Force (AREA)

Abstract

L'invention concerne un procédé (400) pour aider une opération de dételage d'un tracteur (105) d'une remorque (110), la remorque (100) comprenant une béquille de support gauche et une béquille de support droite (340), qui peuvent être étendues indépendamment l'un de l'autre ; le procédé comprend les étapes consistant à déterminer (415) une première charge de la remorque (110), qui agit sur la béquille de support gauche (340) ; déterminer (415) une seconde charge de la remorque (110), qui agit sur la béquille de support droite (340) ; étendre individuellement (425, 430) une béquille de support (340), dont la charge spécifique est inférieure à une valeur seuil prédéterminée attribuée (240) ; et permettre (455) l'ouverture d'un accouplement (335) du tracteur (105) avec la remorque (110) si une charge de la remorque (110) agissant sur le tracteur (105) est inférieure à une autre valeur seuil prédéterminée (240).
EP24716752.1A 2023-04-06 2024-04-02 Dételage d'une remorque d'un tracteur Pending EP4688469A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023108941.2A DE102023108941A1 (de) 2023-04-06 2023-04-06 Abkoppeln eines Aufliegers von einer Zugmaschine
PCT/EP2024/058865 WO2024208795A1 (fr) 2023-04-06 2024-04-02 Dételage d'une remorque d'un tracteur

Publications (1)

Publication Number Publication Date
EP4688469A1 true EP4688469A1 (fr) 2026-02-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP24716752.1A Pending EP4688469A1 (fr) 2023-04-06 2024-04-02 Dételage d'une remorque d'un tracteur

Country Status (4)

Country Link
EP (1) EP4688469A1 (fr)
CN (1) CN120897852A (fr)
DE (1) DE102023108941A1 (fr)
WO (1) WO2024208795A1 (fr)

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DE102023108941A1 (de) 2024-10-10
CN120897852A (zh) 2025-11-04
WO2024208795A1 (fr) 2024-10-10

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