EP4490488A1 - Prüfstand für einen antriebsstrang eines kraftfahrzeugs und baukastensystem - Google Patents
Prüfstand für einen antriebsstrang eines kraftfahrzeugs und baukastensystemInfo
- Publication number
- EP4490488A1 EP4490488A1 EP23709963.5A EP23709963A EP4490488A1 EP 4490488 A1 EP4490488 A1 EP 4490488A1 EP 23709963 A EP23709963 A EP 23709963A EP 4490488 A1 EP4490488 A1 EP 4490488A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- motor
- test
- shaft
- load motor
- load
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
Definitions
- the invention relates to a test bench for a drive train of a motor vehicle according to the preamble of claim 1 and a corresponding modular system.
- Transmission test stands or drive train test stands for testing motor vehicle transmissions or complete motor vehicle drive trains are known from the prior art.
- Such test benches are usually used for quality control in order to detect malfunctions in drive trains at an early stage through a series of stress tests. Typical malfunctions arise, for example, from components with play, such as: B. gears, synchronizer rings, synchronizer bodies, multi-plate clutch disks and shafts that can be deflected and caused to vibrate.
- the acoustic behavior and switching quality are usually also checked.
- test benches are also used in the development and continuous improvement of motor vehicle drive trains.
- DE 4328 537 C2 describes a transmission test bench with a first servomotor serving as a drive motor and a second servomotor serving as a brake motor.
- the drive motor is connected via a coupling to the drive shaft of a motor vehicle transmission to be tested and its speed is controlled via a PC, among other things, so that any speed curve can be simulated.
- the brake motor is connected via an additional clutch to an output shaft of the motor vehicle transmission to be tested.
- the speed of the brake motor is also controlled via the PC.
- the speed curves simulated by the PC are speed curves measured in real driving tests.
- the motor vehicle transmission according to DE 43 28 537 C2 can therefore be tested before installation in a motor vehicle.
- DE 10328 461 A1 discloses a vehicle test bench with a loading machine for each drivable wheel of a motor vehicle.
- the loading machines are connected directly, for example via wheel bolts, or indirectly, for example via a belt drive, to the rims of the motor vehicle wheels, so that the Load machines can both drive and brake the drive train.
- the vehicle test stand of DE 103 28 461 A1 further comprises a frame structure via which the motor vehicle and the loading machines can be lifted and aligned with one another. During the testing process, the motor vehicle is held completely over the frame structure so that the vehicle wheels have no contact with the ground.
- the known motor vehicle test benches have disadvantages for several reasons: Firstly, they are comparatively large and therefore require comparatively large installation areas. On the other hand, they have a non-ideal flow of force from the load motors into the foundation of the test bench. Another disadvantage is that automatic height adjustment of the test object, which is often provided, leads to unfavorable vibration behavior, at least in the area of the test object.
- the invention relates to a test stand for a drive train of a motor vehicle, comprising a first load motor, a second load motor and a base frame with a test object holder for holding a test object and with a first motor holder for holding the first load motor and a second motor holder for holding the second load motor , wherein a first motor shaft of the first load motor and a second motor shaft of the second load motor can be connected to shafts of the test object, so that the shafts of the test object can be subjected to torques and speeds.
- the test stand according to the invention is characterized in that the base frame has a U-shaped cross section, in which a first leg and a second leg extend upwards from a base, with the first load motor also one end face is connected to the first leg of the base frame and the second load motor is connected with one end face to the second leg of the base frame.
- the invention therefore describes a test bench that is suitable for testing a drive train of a motor vehicle.
- the motor vehicle can be a motor vehicle driven by an electric motor as well as a conventionally driven motor vehicle.
- the test specimen is advantageously an electrically driven axle module for a motor vehicle, which, in addition to the electric drive motor, includes a gearbox and two wheel shafts.
- the test stand comprises a base frame with a first motor mount and a second motor mount as well as a first and a second load motor.
- the first load motor is connected to the base frame via the first motor mount and the second load motor is connected to the base frame via the second motor mount.
- the base frame advantageously consists at least partially of a particularly rigid material such as a mineral cast, in particular with a metallic skeletal structure.
- the base frame also has a test object holder, via which a test object to be tested, in particular an axle module, can be connected to the base frame.
- the test stand can equally be designed to test a complete drive train of a motor vehicle or even just to test a component of the motor vehicle drive train, for example the transmission.
- the first and second load motors are advantageously electric motors. Electric motors are comparatively compact, have a wide speed range, especially compared to internal combustion engines, and advantageously have the maximum torque over a wide speed range.
- Each load motor includes a motor housing which houses the load motor.
- the motor housings are, for example, cylindrical.
- the motor housings can also have water cooling.
- the first load motor has a first motor shaft and the second load motor has a second motor shaft, each of which is driveably connectable to a shaft of the test object.
- the shaft(s) of the test object can either be input shafts or output shafts of the test object, in particular wheel shafts of an axle module. Torques and speeds generated by the first and second load motors can thus be introduced into the test specimen, so the test object can be subjected to these torques and speeds.
- the torque and the speed together represent a mechanical power with which the test specimen can be loaded.
- a drive connection is understood to mean a mechanical connection for the transmission of mechanical power.
- the definition that the motor shafts are or can be connected to the shafts of the test object does not necessarily mean that there is a direct mechanical connection, in particular not a rotationally fixed connection, between the first or second motor shaft and the shafts of the examinee must give.
- the drive connection can in principle also include a gear, for example a planetary gear, or individual transmission stages or other intermediate elements.
- the base frame has a U-shaped cross section, in which a first leg and a second leg extend upwards from a base.
- the base frame is in particular made in one piece. This results in a comparatively very high rigidity of the base frame, which effectively prevents the occurrence of vibrations.
- the first load motor is connected with one end face to the first leg of the base frame and the second load motor is also connected one end face is connected to the second leg of the base frame.
- the first motor mount is therefore arranged on the first leg and the second motor mount is correspondingly arranged on the second leg.
- the first and second motor mounts are preferably each a flange connection. A first part of the flange connection represents the front side of the respective load motor or the front side of the housing of the respective load motor and a second part represents the corresponding motor mount. This results in a comparatively large contact surface for the first load motor of the second load motor to the base frame.
- the front side of the first and second load motors, with which the first and second load motors are connected to the base frame, is preferably the so-called a-side of the load motors.
- the test stand according to the invention can also be converted comparatively easily for different load intensities by arranging load motors of a higher or lower performance class on the base frame.
- all load motors of the different performance classes have a standardized flange interface.
- the test object holder is preferably designed to automatically hold the test object, in particular the axle module, and to lock it in a particularly rigid manner using holding means.
- the holding means can, for example, be designed as automatically actuated clamps which clamp the test object firmly into the test object holder.
- the test specimen holder is arranged at the base of the base frame or is part of the base of the base frame. In order to achieve the greatest possible rigidity In order to be able to ensure that the test specimen is accommodated, this is advantageously not designed to be height-adjustable compared to test stands known in the prior art.
- the invention thus describes a highly rigid test bench for testing a drive train of a motor vehicle, in which the test object to be tested can also be operated at very high speeds of over 15,000 rpm without vibrations disrupting the test run.
- speeds of the drive motor of the axle module of over 15,000 l/min are not uncommon, but in known test rigs this regularly leads to the occurrence of vibrations that disrupt the test run.
- the transmission of the axle module typically achieves a speed reduction, so that the wheel shafts of the axle module usually experience speeds of around 2,000 rpm to around 2,500 rpm.
- the first load motor and the second load motor are each designed as permanently excited synchronous motors with at least twelve magnetic pole pairs.
- Such synchronous motors are also known as so-called synchro-torque motors.
- synchro-torque motors This results in the advantage that the load motor can be comparatively compact and, in particular, axially short and slowly rotating, but can also provide a high torque.
- the first and second load motors can provide speeds of up to 3,000 rpm.
- the flange connection described and the axially compact torque motors also have the advantage that the entire test bench is comparatively much smaller and more compact than is usual in the prior art and is therefore significantly more cost-effective.
- Each load motor is advantageously assigned its own inverter.
- the inverter is, for example, three-phase.
- the first motor shaft is designed as a hollow shaft in which a first transfer shaft is arranged in a rotationally fixed manner and that the second motor shaft is designed as a hollow shaft in which a second transfer shaft is arranged in a rotationally fixed manner.
- the drive connection between the motor shafts and the shafts of the test object is then preferably established via the first or second transfer shaft, ie the transfer shafts can be connected both in a rotationally fixed manner to the shafts of the test object, for example via a spline, and in a rotationally fixed manner with the hollow shafts the load motors, for example also via a spline, via a flange connection or via a suitable connecting element.
- the first transfer shaft is connected in a rotationally fixed manner to the first motor shaft via a first torque sensor and that the second transfer shaft is connected in a rotationally fixed manner to the second motor shaft via a second torque sensor.
- the first torque sensor and the second torque sensor each represent a connecting element via which the first motor shaft and the second motor shaft, which are designed as hollow shafts, are connected in a rotationally fixed manner to the first and second transfer shafts inside the respective hollow shaft.
- the first and second torque sensors preferably each comprise one or more force-sensitive elements, in particular one or more strain gauges, which initially detect a force acting on the force-sensitive element or forces acting on the plurality of force-sensitive elements. About geometry of the torque sensors, the torque acting in each case can then be determined from the detected force or forces.
- the first torque sensor is arranged on an end face of the first load motor facing away from the test object and/or that the second torque sensor is arranged on an end face of the second load motor facing away from the test object.
- the first torque sensor is arranged on the so-called b side of the first load motor and the second torque sensor is correspondingly arranged on the b side of the second load motor.
- the first torque sensor is arranged on an end face of the first load motor facing the test object and/or that the second torque sensor is arranged on an end face of the second load motor facing the test object is arranged.
- the first and second torque sensors are arranged on the so-called a-side of the first and second load motor, respectively.
- the torque sensors, via which the force flows from the motor shafts to the transfer shaft, are therefore arranged comparatively close to the shafts of the test object.
- a speed of each of the first load motor and the second load motor is also detected, for example via their control electronics, in particular via their inverter. From the known speed and the known torque, the mechanical power applied to the test specimen can then be determined, for example.
- the first motor shaft is closed on its end face facing away from the test object by means of a first wall, the first wall having a first bearing for the first transfer shaft and/or that the second Motor shaft on its end facing away from the test object by means of a second wall is closed, the second wall having a second bearing for the second transfer shaft.
- the first and second hollow shafts therefore have a closed axial end, with the wall closing the respective axial end having a bearing.
- This bearing in turn is designed to support the first or second transfer shaft in a rotatable manner and with as little force as possible.
- the transfer shafts are therefore reliably mounted in the hollow shafts without affecting the flow of force via the first or second torque sensor.
- the first transfer shaft comprises a first outer hollow shaft, in which a first inner transfer shaft is arranged in an axially displaceable and rotationally fixed manner
- the second transfer shaft comprises a second outer hollow shaft, in which it is axially displaceable and a second inner transfer shaft is arranged in a rotationally fixed manner.
- the first or second transfer shaft consisting of an outer hollow shaft and an inner transfer shaft, is therefore a length-adjustable shaft that can be easily adapted to the length required to establish the connection with the docking points of the corresponding shafts, for example the wheel shafts, of the test specimen. that can.
- the length is adjusted in a simple manner by extending the transfer shaft out of the outer hollow shaft until the connection can be made. This means that the test stand can be quickly and flexibly adapted to different test specimens.
- the total length of the first or second transfer shaft can be changed in order to establish the connection to the test object for a test process and to release the test piece again after the test process - ben.
- the first or second transfer shaft can, for example, be arranged in an axially displaceable and rotationally fixed manner in the first or second outer hollow shaft via a plug-in toothing or another form-fitting connection. According to a particularly preferred embodiment of the invention, it is provided that the first transfer shaft is automatically axially displaceable in the first outer hollow shaft by means of a first actuator and that the second transfer shaft is automatically axially displaceable in the second outer hollow shaft by means of a second actuator .
- the entire first or second load motor does not have to be delivered to the test object, but rather only the first or second transfer shaft is extended axially to the test object.
- the first or second actuator can be, for example, an electrically, pneumatically or hydraulically actuated actuator, in particular an electrically actuated threaded rod or a pneumatically or hydraulically actuated cylinder-piston unit.
- the first or second actuator can preferably be arranged completely or partially in the first or second motor shaft designed as a hollow shaft, in particular in the area of the b side of the first or second load motor.
- the arrangement of a pneumatically or hydraulically actuated actuator in the motor shaft in the area of the b side is particularly advantageous if the b side is also closed by means of the first or second wall.
- the volume within the outer hollow shaft of the first or second transfer shaft and the first or second wall can, with appropriate sealing, be advantageously used as the working space of a corresponding cylinder-piston unit.
- the first or second actuator can also comprise a first or second carriage, which is arranged, for example, in the area between the first load motor and the test object or in the area between the second load motor and the test object.
- the first carriage can then be the first Grab the transfer shaft and move it axially and the second carriage can accordingly grab the second transfer shaft and move it axially.
- the first or second carriage can be moved, for example, by actuating a cylinder-piston unit already described or an electrically actuated threaded rod.
- the cylinder-piston unit is also assigned a mechanical return spring, which pushes the cylinder-piston unit into a starting position.
- the cylinder-piston unit can then be actuated against the restoring force by applying pneumatic or hydraulic pressure.
- the test object can therefore not only be automatically fed to the test object holder and arranged on it, but in addition the docking points on the shafts of the test object can also be automatically connected to the first and second load motors.
- no operating personnel are required to arrange the test object on the test object holder and to establish the connection between the load motors and the docking points on the shafts of the test object.
- the required length can be fixed after the length of the first or second transfer shaft has been individually adapted to the test item, for example by a clamping device which clamps the corresponding transfer shaft against the outer hollow shaft.
- a plug connection is preferably arranged, via which the drive connection to the shafts of the test specimen can be established.
- the first transfer shaft has a first adapter piece on its axial end piece facing the test object and the second transfer shaft has a second adapter piece on its axial end piece facing the test object.
- the drive connection to the test object is then advantageously established via the first or second adapter piece.
- the first or second adapter piece has, for example, a flange connection at its axial end facing the first or second transfer shaft.
- a rotationally fixed connection to the first or second transfer shaft can then be established via the flange connection.
- the axial end of the first or second adapter piece facing the test object is designed individually for the test object and is designed, for example, as a plug-in toothing, so that it can be easily inserted into a corresponding counter-toothing of the test object.
- This means that the test stand can be easily and very quickly adapted to different types of test objects by exchanging the adapter pieces.
- the resulting set-up times are comparatively short.
- the test stand has a first module for vertical adjustment of the first load motor and a second module for vertical adjustment of the second load motor.
- the first or second module for vertical adjustment can, for example, be designed to vertically adjust the first or second motor mount electrically or hydraulically.
- a vertical alignment of the first or second load motor to the shafts of the test specimen can be carried out in a simple and largely automated manner via the first or second module for vertical adjustment.
- the first and second modules for vertical adjustment are advantageously arranged on the first and second motor mounts, respectively, so that the first and second motor mounts together with the first and second load motors can be vertically adjusted relative to the base frame.
- the test stand has a first module for horizontal adjustment of the first load motor and a second module for horizontal adjustment of the second load motor.
- the first or second module for horizontal adjustment can also advantageously be designed to adjust the first or second motor mount electrically or hydraulically, but horizontally.
- the first or second module for horizontal adjustment is preferably also arranged on the first or second motor mount, in particular on the first or second Module for horizontal adjustment is attached, so that the first and second motor mounts together with the first and second load motor can be adjusted vertically and horizontally relative to the base frame.
- the first or second module for horizontal adjustment can be designed to enable one-dimensional adjustability along a horizontal straight line that is perpendicular to a longitudinal axis of the test stand.
- a first and/or second module for horizontal adjustment is arranged between the first and/or second leg and the base of the base frame, so that the first leg and/or the second leg can be adjusted relative to the base frame.
- the first or second module for horizontal adjustment can be designed to enable two-dimensional adjustability in a horizontal plane.
- the test specimen can generally have very high engine speeds of over 15,000 rpm, for example in a form of training as an axle module, as mentioned at the beginning, it can in principle excite the test specimen holder to oscillate in a broadband manner.
- the test object holder - as provided according to the invention - is not adjustable and is therefore very rigid and in particular is very rigidly connected to the base of the base frame, the occurrence of vibrations can be largely avoided.
- the load motors are advantageously adjustable vertically and horizontally for alignment with the test specimen, since speeds of no more than 2,500 rpm usually occur here.
- the invention further relates to a modular system for easily producing a test stand adapted to the test specimen, comprising at least a first load motor and a second load motor, each from a common performance class, and at least one first inverter and a second inverter from each a common performance class, wherein the common performance class of the at least first and second inverters corresponds to the performance class of the at least first and second electric motor, base frame, and / or a first module for vertical adjustment and a second module for vertical adjustment and / or a first module for horizontal adjustment as well as a second module for horizontal adjustment and a variety of different adapter pieces.
- the modular system thus allows the production of a test stand according to the invention and therefore includes all components of the test stand according to the invention.
- the modular system may include several first and second load motors as well as several first and second inverters, each of which is assigned in pairs to a performance class. This allows, for example, depending on the test item to be tested, higher- or lower-power load motors to be arranged on the motor mounts of the base frame and controlled via inverters that are adapted to the performance classes of the load motors.
- the modular system also includes a large number of adapter pieces specific to the test specimen, so that the test stand can be adapted to a large number of different test objects, in particular with different shafts or docking points.
- FIG. 1 shows an example and schematic of a possible embodiment of a test bench according to the invention for a drive train of a motor vehicle
- FIG. 2 shows the test bench of FIG. 1, but with two identical load motors
- FIG. 3 shows an example and schematic of a further possible embodiment of a test bench according to the invention for a drive train of a motor vehicle
- 4 shows an example and schematic of a further possible embodiment of a test bench according to the invention for a drive train of a motor vehicle
- FIG. 5 shows, by way of example and schematically, a further possible embodiment of a test bench according to the invention for a drive train of a motor vehicle
- FIG. 7 shows an example and schematic of a possible embodiment of a first actuator for automated displacement of the first transfer shaft axially in the first outer hollow shaft of the first transfer shaft.
- FIG. 1 shows, by way of example and schematically, a possible embodiment of a test bench 100 according to the invention for a drive train of a motor vehicle (in FIG.
- the test stand 100 includes a first load motor 110, a second load motor 120 and a base frame 130 with a test object holder 131 for holding a test object 140.
- the base frame 130 has a U-shaped cross-section in which a first leg 135 and a second leg 136 extend upwards from a base 134.
- the test object 140 is, for example, an electric axle module which, in addition to an electric drive motor, also includes a gearbox and two wheel shafts.
- the test object 140 is mounted on the test object holder 131.
- the Test specimen holder 131 is firmly and therefore very rigidly connected to the base 134 of the base frame 130.
- the first load motor 110 and the second load motor 120 are each designed as an electric motor.
- the first load motor 110 and the second load motor 120 are permanently excited synchronous motors, each with twelve magnetic pole pairs.
- Such synchronous motors are also known as so-called synchro-torque motors.
- the first load motor 110 and the second load motor 120 are therefore comparatively compact and axially short. Nevertheless, they can provide a comparatively high torque.
- the base frame 130 also has a first motor mount 132 for accommodating the first load motor 110 and a second motor mount 133 for accommodating the second load motor 120.
- the first motor mount 132 and the second motor mount 133 are each a flange connection, via which the first load motor 110 is flanged to the base frame 130 with its end face facing the test specimen 140, the so-called a-side.
- the second motor mount 133 is also, for example, a flange connection, via which the second load motor 110, analogous to the first load motor 110, is flanged to the base frame 130 with its end face facing the test specimen 140, the so-called a-side.
- the first load motor 110 is arranged on the first leg 135 via the first motor receptacle 132 and the second load motor 120 is arranged on the second leg 136 via the second motor receptacle 133.
- a first motor shaft 111 of the first load motor 110 is, for example, designed as a hollow shaft 111, in which a first transfer shaft 112 is arranged, and likewise a second motor shaft 121 of the second load motor 120 is designed, for example, as a hollow shaft 121, in which a second transfer shaft is arranged 122 is arranged.
- the first transfer shaft 112 is rotatably connected to the first motor shaft 111 via a first torque sensor 113 and is axially fixed. Since the torque provided by the first load motor 110 is guided via the first torque sensor 113, the torque generated by the first load motor 110 can be reliably detected at any time via the first torque sensor 113.
- the second transfer shaft 122 is connected in the same way to the second motor shaft 121 in a rotationally fixed and axially fixed manner via a second torque sensor 123. Since in this case too the torque provided by the second load motor 120 is guided via the second torque sensor 123, the torque generated by the second load motor 120 can be detected via the second torque sensor 123.
- the first load motor 110 and the second load motor 120 in FIG. 1 differ from one another.
- the first torque sensor 113 is arranged on an end face of the first load motor 110 facing away from the test object 140, the so-called b-side
- the second torque sensor 123 is arranged on an end face facing the test object 140, the so-called a-side.
- the second load motor 120 is arranged.
- the second motor mount 133 includes a collar-like projection 137 to create space for the second torque sensor 123.
- the projection has the flange connection by means of which the second load motor is connected to the base frame 130.
- the first motor shaft 121 which is designed as a hollow shaft, can be closed on its end face facing away from the test specimen 140, the b-side, by means of a second wall 124 be.
- the second wall can also be provided without simultaneously providing the second bearing.
- the first transfer shaft 112 also includes a first outer hollow shaft 112′, in which a first inner transfer shaft 112′′ is arranged in an axially displaceable and rotationally fixed manner.
- the second transfer shaft 122 comprises a second outer hollow shaft 122′, in which a second inner transfer shaft 122′′ is arranged in an axially displaceable and rotationally fixed manner.
- first inner transfer shaft 112" and the second inner transfer shaft 122" facing the test object 140 can then be connected to shafts of the test object 140 via a first test object-specific adapter piece 116 or a second test object-specific adapter piece 126, for example with two output shafts of the test object 140. This means that the shafts of the test object 140 can be subjected to torques and speeds.
- the first and second adapter pieces 116, 126 have, for example, a flange connection at their axial end facing the first and second transfer shafts 112, 122, respectively.
- a rotationally fixed connection to the first or second transfer shaft 112, 122 can then be established via the flange connection.
- the axial end of the first or second adapter piece 116, 126 facing the test object 140 is designed individually for the test object and is designed, for example, as a plug-in toothing, so that it can be easily inserted into a corresponding counter-toothing of the test object 140.
- first transfer shaft 112 and the second transfer shaft 122 each consist of an outer hollow shaft 112', 122' and a first and second transfer shaft 112", 122" arranged axially displaceably in the outer hollow shaft 112', 122'
- the first transfer shaft 112" and the second transfer shaft 122" are delivered axially to the test object 140 or the corresponding docking points of the test object 140.
- the first transfer shaft 112" and the second transfer shaft 122" can be automatically displaced axially in the first and second outer hollow shaft 112, 122 by means of a first actuator and a second actuator (both not shown in FIG. 1).
- first and the second actuator are, for example, pneumatically actuated actuators, each of which has a cylinder-piston unit that can be acted upon with compressed air and a mechanical return spring that counteracts the compressed air loading.
- FIG. 2 shows the test stand 100 of FIG of FIG. 2 the first load motor 110 of FIG. 1.
- the first load motor 110 is drivingly connected to a shaft of the test object 140 via the first test-specific adapter piece 116.
- the second load motor 120 is drivingly connected to a shaft of the test object 140 via the second test-specific adapter piece 126.
- the drive connection can be established comparatively simply and, above all, automatically, since the first inner transfer shaft 112" and the second inner transfer shaft 121" are each rotationally fixed but axially movable in the first outer hollow shaft 112' or in the second outer hollow shaft 122 'are arranged and can be delivered to the test object 140 by means of the first or second actuator.
- FIG. 3 shows, by way of example and schematically, a further possible embodiment of a test stand 100 according to the invention for a drive train of a motor vehicle (not shown in FIG. 3).
- the test stand 100 of FIG. 3 differs from the test stand 100 of FIG. According to the example, the first module 117 for vertical adjustment and the second module 127 for vertical adjustment each have an electric drive (not shown in FIG. 1), via which a vertical adjustment of the first or second load motor 110, 120 is assigned the waves of the test specimen 140 can be done.
- test stand 100 shows, by way of example and schematically, a further possible embodiment of a test stand 100 according to the invention for a drive train of a motor vehicle (not shown in FIG. 4).
- the test stand 100 of FIG. 4 differs from the test stand 100 of FIG a second module 128 for horizontal adjustment of the second load motor 120.
- the first module 118 is arranged for vertical adjustment between the first leg 135 and the base 134 of the base frame 130.
- the first module 118 for vertical adjustment enables two-dimensional adjustability in a horizontal plane.
- the second module 128 is arranged for vertical adjustment between the second leg 136 and the base 134 of the base frame 130.
- the second module 128 for vertical adjustment also enables two-dimensional adjustability in a horizontal plane.
- the first and second modules 118, 128 for vertical adjustment also each have an electric drive (not shown in FIG. 1), via which a horizontal adjustment of the first and second load motors 110, 120 to the shafts of the test specimen 140 can be done. It is therefore not necessary to adjust the height of the test object 140 or the height of the test object holder 131.
- FIG. 5 shows, by way of example and schematically, a further possible embodiment of a test bench 100 according to the invention for a drive train of a motor vehicle (not shown in FIG. 5).
- the test stand 100 of FIG. 5 differs from the test stand 100 of FIG. 4 in the arrangement of the first module 118 for horizontal adjustment of the first Load motor 110 and the second module 128 for horizontal adjustment of the second load motor 120. According to the exemplary embodiment of FIG and the second module 117, 127 for vertical adjustment.
- test stand 100 according to the invention shows a true-to-scale size comparison between a test stand 100 according to the invention and a test stand 200 known in the prior art and widely used.
- the test stand 100 according to the invention is significantly more compact than the known test stand 200.
- the first actuator 150 for automatically moving the first transfer shaft 112′′ axially in the first outer hollow shaft 112′ of the first transfer shaft 112.
- the first actuator 150 includes a gripper 151, which is fork-shaped in the upper area and can axially guide the first transfer shaft 112".
- the first transfer shaft 112′′ for example, has two radially circumferential collars, between which the forked end of the gripper 151 is caught axially.
- the gripper 151 in turn is arranged on a carriage 152, which can be moved, for example, by means of a pneumatic actuation in the direction of the test object 140 (left in FIG.
- the actuator 150 shown in FIG. 7 is arranged in the area between the first load motor 110 and the test specimen 140.
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Abstract
Description
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022202300.5A DE102022202300B3 (de) | 2022-03-08 | 2022-03-08 | Prüfstand für einen Antriebsstrang eines Kraftfahrzeugs und Baukastensystem |
| PCT/EP2023/055558 WO2023169980A1 (de) | 2022-03-08 | 2023-03-06 | Prüfstand für einen antriebsstrang eines kraftfahrzeugs und baukastensystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4490488A1 true EP4490488A1 (de) | 2025-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23709963.5A Pending EP4490488A1 (de) | 2022-03-08 | 2023-03-06 | Prüfstand für einen antriebsstrang eines kraftfahrzeugs und baukastensystem |
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|---|---|
| EP (1) | EP4490488A1 (de) |
| CN (1) | CN118679367A (de) |
| DE (1) | DE102022202300B3 (de) |
| WO (1) | WO2023169980A1 (de) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022207056B3 (de) | 2022-07-11 | 2023-10-12 | Zf Friedrichshafen Ag | Prüfstand zum Prüfen von Eigenschaften eines elektrisch antreibbaren Achsmoduls für ein Kraftfahrzeug |
| WO2025186041A1 (de) | 2024-03-07 | 2025-09-12 | Zf Friedrichshafen Ag | Antriebseinheit für einen prüfstand zum prüfen eines elektrischen achsantriebsmoduls für ein kraftfahrzeug und prüfstand |
| DE102024202491B3 (de) * | 2024-03-18 | 2025-08-07 | Zf Friedrichshafen Ag | Prüfstand zum Prüfen von Eigenschaften eines elektrisch antreibbaren Achsmoduls für ein Kraftfahrzeug |
| DE102024209884B3 (de) | 2024-10-10 | 2026-03-05 | Zf Friedrichshafen Ag | Antriebseinheit für einen Prüfstand zum Prüfen eines elektrischen Achsantriebsmoduls für ein Kraftfahrzeug und Prüfstand |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9321158U1 (de) * | 1993-08-25 | 1996-07-25 | Universität Stuttgart, 70174 Stuttgart | Getriebeprüfstand |
| DE4328537C2 (de) | 1993-08-25 | 2000-03-30 | Univ Stuttgart | Getriebeprüfstand und Verfahren zum Prüfen eines Getriebes |
| DE10328461A1 (de) | 2003-06-25 | 2005-01-20 | Daimlerchrysler Ag | Fahrzeugprüfstand |
| JP2007064932A (ja) * | 2005-09-02 | 2007-03-15 | Shinko Electric Co Ltd | 高速アップダウン耐久試験装置 |
| DE102007048530A1 (de) | 2007-10-10 | 2009-04-16 | Zf Friedrichshafen Ag | Antriebseinheit zur Prüfung von Getrieben und Vorrichtung zur Prüfung von Getrieben |
| FR2946745B1 (fr) * | 2009-06-12 | 2011-08-26 | Mbda France | Banc de charge dynamique. |
| DE102011114610A1 (de) * | 2010-06-21 | 2011-12-22 | GIF Gesellschaft für Industrieforschung mbH | Getriebeprüfstand |
| CN208348329U (zh) * | 2018-06-29 | 2019-01-08 | 重庆小康工业集团股份有限公司 | 一种伸缩传动轴及力矩传递装置 |
| CN208887938U (zh) | 2018-07-06 | 2019-05-21 | 湖北环一电磁装备工程技术有限公司 | 永磁同步电机驱动的底盘测功试验台 |
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2022
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2023
- 2023-03-06 EP EP23709963.5A patent/EP4490488A1/de active Pending
- 2023-03-06 CN CN202380021335.9A patent/CN118679367A/zh active Pending
- 2023-03-06 WO PCT/EP2023/055558 patent/WO2023169980A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023169980A1 (de) | 2023-09-14 |
| DE102022202300B3 (de) | 2023-08-17 |
| CN118679367A (zh) | 2024-09-20 |
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