FR3138694A1 - System and method for testing a vehicle. - Google Patents

Abstract

System and method for testing a vehicle. System (1; 101) for testing a vehicle (200), in particular an automobile, the system comprising: - at least one idler roller belt (3, 5; 102, 103) intended to receive a drive wheel of a vehicle; - a first adjustable frame (7; 107), said at least one roller belt being intended to be fixed to the first frame; - a second adjustable frame (17; 109); - at least one adjustable connection means (31, 32; 141, 142) intended to connect the first frame to the second frame. Figure for abstract: 6

Description

System and method for testing a vehicle.

The invention relates to a system for testing a vehicle, in particular an automobile. The invention also relates to a method of testing a vehicle.

In a vehicle, it appears important to be able to check the operation of the vehicle, particularly when the assembly of a vehicle is completed, and before switching on the vehicle. A verification of the operational integrity of the main functions of the vehicle and especially the characteristics of all safety functions such as braking and/or vehicle speed is particularly required.

We know of brake roller benches. However, existing solutions have drawbacks. In particular, such braking roller benches are equipped with training and braking equipment and data acquisition elements via the rollers.

The aim of the invention is to provide a system and a method for testing a vehicle remedying the above drawbacks and improving the test systems and methods known from the prior art. In particular, the invention makes it possible to produce a system which is:

• transportable
• easily assembled and disassembled
• which has a small footprint
• a system and process that are simple and reliable.

The invention relates to a system for testing a vehicle, in particular an automobile, the system comprising:

- at least one idler roller belt intended to receive a driving wheel of a vehicle;

- a first adjustable frame, said at least one roller belt being intended to be fixed to the first frame;

- a second adjustable frame;

- at least one adjustable connection means intended to connect the first frame to the second frame.

The system may comprise a first idler belt and a second idler belt intended to be fixed to the first adjustable frame on either side of the first adjustable frame, in particular respectively by a first fixing system and a second fixing system each comprising at least one screw and at least one nut.

The system may further comprise at least one locking means intended to lock a supporting wheel of a vehicle and intended to be fixed to the second adjustable frame, in particular a first locking means and a second locking means intended to be fixed to the second adjustable frame on either side of the second adjustable frame, in particular respectively by a third fixing system and a fourth fixing system each comprising at least one screw and at least one nut.

The system may further comprise at least one idler roller belt intended to support a drive wheel or a supporting wheel of a vehicle and intended to be fixed to the second adjustable frame, in particular a third idler roller belt and a fourth idler roller belt intended to be fixed second adjustable frame on either side of the second adjustable frame, in particular respectively by a third fixing system and a fourth fixing system each comprising at least one screw and at least one nut .

The system may further comprise a transmission system comprising:

- a transmission shaft, in particular grooved, the shaft being intended to connect a roller belt connected to the first frame with a roller belt connected to the second frame, and

- a first angle transmission device and a second angle transmission device, the shaft being intended to be arranged between the first angle transmission device and the second angle transmission device.

The first adjustable frame may comprise a first spar, a second spar, a first crossbar and a second crossbar, the first crossbar comprising a first crossbar and a second crossbar, the second crossbar being configured to slide in the first crossbar, the second crossbar comprising a third crossbar and a fourth crossbar, the fourth crossbar being configured to slide in the third crossbar; and or

The second adjustable frame may comprise a third spar, a fourth spar, a third crossbar and a fourth crossbar, the third crossbar comprising a fifth crossbar and a sixth crossbar, the sixth crossbar being able to slide in the fifth crossbar, the fourth crosspiece comprising a seventh crossbar and an eighth crossbar, the eighth crossbar being able to slide in the seventh crossbar.

The at least one adjustable connection means may comprise a first connection means and a second connection means.

The system may include a first stopping loop connected to the first frame and/or a second stopping loop connected to the second frame.

The invention also relates to a method of testing a vehicle using a system as defined above, comprising the following steps:

- adjust the first frame and the second frame;

- fix the at least one idler roller mat on the first frame, in particular by the first fixing system and/or the second fixing system;

- insert and fix the first connecting means and/or the second connecting means in the second frame;

- insert the first frame on the first connecting means and/or the second connecting means, by adjusting the first connecting means and the second connecting means to a chosen wheelbase;

- position a vehicle on the system, at least one drive wheel being placed on the at least one idler roller belt;

- install the at least one locking means on at least one carrying wheel and secure it, in particular by a fixing system comprising at least one screw and at least one nut;

- install at least one retaining strap between the first stopping loop and/or the second stopping loop and the respective lashing rings of the vehicle;

- set the vehicle's drive wheels in motion.

The vehicle testing process may include the following steps:

- fix the first idler belt and the second idler belt on the first frame, in particular by the first fixing system, and fix the third idler belt and the fourth idler belt on the second frame, in particular respectively by the third fixing system and the fourth fixing system;

- adjust the first frame and the second frame;

- insert and fix the first connecting means and/or the second connecting means in the second frame;

- insert the first frame on the first connecting means and/or the second connecting means, by adjusting the first connecting means and the second connecting means to a chosen wheelbase;

- possibly mount the transmission shaft, in particular splined, between the first angle transmission device and the second angle transmission device;

- set up a vehicle on the system, each wheel of the vehicle being placed on an idler roller belt;

- install at least one retaining strap between the first stopping loop and/or the second stopping loop and the respective lashing rings of the vehicle;

- set the vehicle in motion.

The appended drawings represent, by way of example, an embodiment of a system according to the invention and a mode of execution of a method according to the invention.

There schematically represents an embodiment of a test system.

There represents an embodiment of a test system.

There represents a blocking means of a test system, intended to block a supporting wheel of a vehicle.

There represents an idler roller belt of a test system, a driving wheel of a vehicle being arranged on the idler roller belt.

There represents a blocking means of a test system, a supporting wheel of a vehicle being blocked by the blocking means.

There represents an embodiment of a test system.

The invention proposes a system and a test method intended to operate all types of four-wheeled vehicles for electrical/electronic burn-in or search for mechanical rolling noise, driveline noise, detection of all noises other than aerodynamic noises . Such a system is intended to rotate the wheels of the vehicle without moving the vehicle. This eliminates the problem of space in a workshop. For this, the system includes at least one idler roller belt.

We define a direct orthonormal coordinate system XYZ, in which the X axis designates the longitudinal direction in which the vehicle usually moves in a straight line, and is oriented from the front to the rear of the vehicle. The Y axis designates the transverse direction, perpendicular to the X axis, and is oriented from the left side to the right side of the vehicle. The Z axis designates the vertical direction, and is oriented from bottom to top, from the bottom to the top of the vehicle. The terms "right" and "left" are defined with reference to the direction Y, according to the point of view of a driver of the vehicle. The vehicle is considered to be resting on horizontal ground.

When manufacturing vehicles, the limited number of lifts available in a workshop do not allow a finished vehicle to be kept on them for the electrical/electronic start-up phase. For these electrical/electronic start-up steps, activation of the electric motor is required. For this, the driving wheels of the vehicle, for example the rear wheels, must be able to turn freely.

So that this starting of a vehicle does not disrupt the start of assembly of the next vehicle, the invention proposes a system which allows:

- to take care of a vehicle on the ground;

- to be able to take care of a vehicle at any location in a workshop or to travel to a workshop other than the assembly one;

- leave the drive wheels of a vehicle, for example the rear wheels, free to rotate;

- access to a vehicle in complete safety in order to carry out mechanical/electrical/electronic interventions.

The system is intended to enable functional tests of a vehicle to be carried out, in particular rapid tests. Such a system makes it possible to check the operation of a vehicle before safely removing the vehicle from the workshop. Such a system makes it possible to secure the essential functions of a vehicle, for example before road tests. Such a system allows the vehicle to turn on the spot. Such a system makes it possible, for example, to test older generation vehicles (for example present in museums or among collectors) for their maintenance, before taking the vehicle out.

Electrical and/or electronic means, including various measurement sensors of desired quantities, can be connected to the system to evaluate the behavior of the roller belts and deduce information on the operation of a vehicle.

The rotational movement of the idler rollers of the at least one belt is induced by the drive wheels of the vehicle and can be detected by speed sensors connected to the system.

Such a system can be used to operate a vehicle:

- at moderate wheel rotation speeds, for example around 50 km/h;

- for electrical/electronic burn-ins;

- in order to detect mechanical driveline noise and other noise except aerodynamic noise.

Such a system makes it possible to carry out operational checks, such as checks of the direction of rotation of the wheels, forward and/or reverse tests, and operational checks of the brake system.

An embodiment of a test system 1 is described below with reference to Figures 1 to 5. The test system 1 is described below in the case where it is intended to be used for testing a two-wheeled vehicle. drive and propulsion wheels. Such a test system 1 could also be used to test a two-wheel drive and traction vehicle.

The test system 1 is intended to be installed on a floor, in a removable manner.

System 1 comprises at least one belt, or bench, with idle rollers intended to receive a drive wheel 201 of a vehicle 200.

The at least one idler roller belt may be of the type usually used to carry out braking tests or a technical inspection of a vehicle. Depending on the diameter of the wheels of the vehicle to be tested, one or more idle rollers of at least one belt may be removed to ensure the stability of the vehicle when the wheels are moving.

By “idler roller belt” or “idler roller bench” we mean a belt or bench which is not connected to any electrical equipment, and whose rollers are not secured.

The at least one roller belt is configured to mimic relative movement between a wheel and a road surface.

Test system 1 is intended to simulate the driving of a vehicle.

The system 1 may comprise a first idler roller belt 3 and a second idler roller belt 5.

The first idler roller belt 3 comprises for example a frame or support frame 3s and at least one rotating roller, in particular four rotating rollers 3a, 3b, 3c, 3d.

A 3e space may be present between a pair of rollers 3a, 3b on the one hand and a pair of rollers 3c, 3d on the other hand so that a wheel 201 of a vehicle can be partially inserted into this 3e space ( ). This results in more precise positioning of a vehicle compared to the case where the 3rd space would not be present, which in particular makes it possible to secure the positioning of the vehicle.

The chassis or support frame 3s is intended to serve as a support for an installation on the ground of the first idler roller belt 3. The rotating rollers 3a, 3b, 3c, 3d each comprise, for example, a rotation shaft fixed on the chassis 3s.

The second idler roller belt 5 comprises for example a chassis or support frame 5s and at least one rotating roller, in particular four rotating rollers 5a, 5b, 5c, 5d.

A space 5e may be present between a pair of rollers 5a, 5b on the one hand and a pair of rollers 5c, 5d on the other hand so that a wheel 201 of a vehicle can be partially inserted into this space 5e ( ). This results in more precise positioning of a vehicle compared to the case where the 5th space is not present, which in particular makes it possible to secure the positioning of the vehicle.

The chassis or support frame 5s is intended to serve as a support for installation on the ground of the second idler roller belt 5. The rotating rollers 5a, 5b, 5c, 5d each comprise, for example, a rotation shaft fixed on the chassis 5s.

System 1 may include a first adjustable frame 7.

Said at least one roller belt is intended to be fixed to the first adjustable frame 7.

The first idler roller belt 3 and the second idler roller belt 5 are in particular intended to be fixed to the adjustable frame 7 on either side of the first adjustable frame 7 in the transverse direction Y.

The first idler roller belt 3 is for example intended to be fixed on a lateral side of the first adjustable frame 7 by a first fixing system 4. The first fixing system 4 comprises for example at least one screw and at least one nut . A drilling can be made in the frame 3s to fix the mat 3 on the first frame 7.

The second idler roller belt 5 is for example intended to be fixed on the lateral side of the first adjustable frame 7 opposite that on which the first idler roller belt 3 is fixed, by a second fixing system 6. The second fixing system 6 includes for example at least one screw and at least one nut. A drilling can be made in the frame 5s to fix the mat 5 on the first frame 7.

The first adjustable frame 7 may comprise a first spar 8 and a second spar 9. The first and second spars 8, 9 extend in the longitudinal direction X.

The first idler roller belt 3 is for example intended to be fixed to the first spar 8 of the first adjustable frame 7. The second idler roller belt 5 is for example intended to be fixed to the second spar 9 of the first adjustable frame 7.

The first adjustable frame 7 may further comprise a first crosspiece 10 and a second crosspiece 13. The first and second crosspieces 10, 13 extend in the transverse direction Y.

Advantageously, the first crossbar 10 may comprise a first transverse bar 11 and a second transverse bar 12. The second transverse bar 12 is for example configured to slide in the first transverse bar 11.

Advantageously, the second crossbar 13 may comprise a third transverse bar 14 and a fourth transverse bar 15. The fourth transverse bar 15 is for example configured to slide in the third transverse bar 14.

The first transverse bar 11, the second transverse bar 12, the third transverse bar 14 and the fourth transverse bar 15 are for example hollow tubes, for example of section of the order of 50 mm by 50 mm, in particular of shaped section square or round or rectangular.

The first transverse bar 11, the second transverse bar 12, the third transverse bar 14 and the fourth transverse bar 15 are for example intended for adjusting the first frame 7 according to the track V of a vehicle to be tested. The first transverse bar 11, the second transverse bar 12, the third transverse bar 14 and the fourth transverse bar 15 are intended in particular to ensure a function of adjustment means 16 of the first frame 7 as a function of the track V of a vehicle at test, in particular by sliding a bar in another bar.

By “track” V of a vehicle, we mean a distance between the two front wheels or a distance between the two rear wheels of a vehicle.

By “front track” of a vehicle, we mean a distance between the two front wheels of a vehicle. By “rear track” of a vehicle, we mean a distance between the two rear wheels of a vehicle.

The first crosspiece 10 and/or the second crosspiece 13 can be graduated. The first crosspiece 10 may include a graduation zone 16a intended to provide a function of adjustment means 16 of the first frame 7 as a function of track V of a vehicle to be tested. The second crosspiece 13 may include a graduation zone 16b intended to provide a function of adjustment means 16 of the first frame 7 as a function of track V of a vehicle to be tested.

System 1 may include a second adjustable frame 17.

The second adjustable frame 17 may comprise a third spar 18 and a fourth spar 19. The third and fourth spars 18, 19 extend in the longitudinal direction X.

The second adjustable frame 17 may further comprise a third crosspiece 20 and a fourth crosspiece 23. The third and fourth crosspieces 20, 23 extend in the transverse direction Y.

Advantageously, the third crossbar 20 may comprise a fifth transverse bar 21 and a sixth transverse bar 22. The sixth transverse bar 22 is for example configured to slide in the fifth transverse bar 21.

Advantageously, the fourth crossbar 23 can comprise a seventh crossbar 24 and an eighth crossbar 25. The eighth crossbar 25 is for example configured to slide in the seventh crossbar 24.

The fifth transverse bar 21, the sixth transverse bar 22, the seventh transverse bar 24 and the eighth transverse bar 25 are for example hollow tubes, for example of section of the order of 50 mm by 50 mm, in particular of shaped section square or round or rectangular.

The fifth crossbar 21, the sixth crossbar 22, the seventh crossbar 24 and the eighth crossbar 25 are for example intended for adjusting the second frame 17 according to the track V of a vehicle to be tested. The fifth transverse bar 21, the sixth transverse bar 22, the seventh transverse bar 24 and the eighth transverse bar 25 are in particular intended to ensure a function of adjustment means 26 of the second frame 17 as a function of the track V of a vehicle at test, in particular by sliding a bar in another bar.

The third crosspiece 20 and the fourth crosspiece 23 can be graduated. The third crosspiece 20 may include a graduation zone 26a intended to provide a function of adjustment means 26 of the second frame 17 as a function of track V of a vehicle to be tested. The fourth crosspiece 23 may include a graduation zone 26b intended to provide a function of adjustment means 26 of the second frame 17 as a function of track V of a vehicle to be tested.

System 1 may include at least one adjustable connection means intended to connect the first frame 7 to the second frame 17.

System 1 may comprise a first connecting means 31 and a second connecting means 32. The first and second connecting means 31, 32 extend in the longitudinal direction X.

The first connecting means 31 is for example in the shape of a bar. The first connecting means 31 is for example a hollow tube, for example with a section of the order of 40 mm by 40 mm.

The second connecting means 32 is for example in the shape of a bar. The second connecting means 32 is for example a hollow tube, for example with a section of the order of 40 mm by 40 mm.

The first connection means 31 and/or the second connection means 32 are intended in particular to provide a function of adjustment means 36 of the system 1 as a function of the wheelbase E of a vehicle to be tested, for example by sliding of a bar within another bar.

By “wheelbase” E of a vehicle, we mean the greatest distance between the front wheels and the rear wheels.

The first frame 7 can slide along the first connecting means 31 and the second connecting means 32. The second frame 17 can slide along the first connecting means 31 and the second connecting means 32.

The system 1 may further comprise at least one blocking means intended to block or chock a supporting wheel of a vehicle. The at least one blocking means is intended to be fixed to the second adjustable frame 17. As a result, the system 1 is secure.

System 1 may comprise a first locking means 41 and a second locking means 43 intended to be fixed to the second adjustable frame 17 on either side of the second adjustable frame 17 in the transverse direction Y.

The first blocking means 41 comprises for example a frame or support frame 41a, a first wall 41b, particularly inclined, and a second wall 41c, particularly inclined.

The chassis or support frame 41a is intended to serve as a support for an installation on the ground of the first blocking means 41. A supporting wheel 203 of a vehicle is intended to be blocked or wedged between the first wall 41b and the second wall 41c of the first blocking means 41 ( ).

The second blocking means 43 comprises for example a frame or support frame 43a, a first wall 43b, particularly inclined, and a second wall 43c, particularly inclined.

The chassis or support frame 43a is intended to serve as a support for installation on the ground of the second blocking means 43. A supporting wheel 204 of a vehicle is intended to be blocked or wedged between the first wall 43b and the second wall 43c of the second blocking means 43 ( ).

The first locking means 41 is for example intended to be fixed on a lateral side of the second adjustable frame 17 by a third fixing system 42. The third fixing system 42 comprises for example at least one screw and at least one nut.

The second blocking means 43 is for example intended to be fixed on the lateral side of the second adjustable frame 17 opposite that on which the first blocking means 41 is fixed, by a fourth fixing system 44. The fourth fixing system 44 comprises for example at least one screw and at least one nut.

The first blocking means 41 is for example intended to be fixed to the third beam 18 of the second adjustable frame 17. In addition, the first blocking means 41 can be intended to be fixed to the first connecting means 31.

The second locking means 43 is for example intended to be fixed to the fourth spar 19 of the second adjustable frame 17. In addition, the second locking means 43 can be intended to be fixed to the second connecting means 32.

The first blocking means 41 is for example a wedge. The second blocking means 43 is for example a wedge.

Advantageously, the system 1 can comprise a first stop loop 51 connected to the first frame 7, in particular to the first crosspiece 10, for example to the first transverse bar 11.

Advantageously, the system 1 can comprise a second stop loop 52 connected to the second frame 17, in particular to the fourth crosspiece 23, for example to the eighth crossbar 25.

The first stop buckle 51 is for example intended to be connected to a first holding and safety strap 53, for example made of nylon. The first retention and safety strap 53 is also intended to be connected to a lashing ring of a vehicle.

The second stop buckle 52 is for example intended to be connected to a second holding and safety strap 54, for example made of nylon. The second retention and safety strap 54 is also intended to be connected to another lashing ring of a vehicle.

System 1 can be connected to electrical sensors intended to provide information, for example speed.

In the case of a two-wheel drive and rear-wheel drive vehicle, a first rear wheel of the vehicle is arranged on the first roller belt 3 and a second rear wheel of the vehicle is arranged on the second roller belt 5. A first wheel front of the vehicle is held by the first locking means 41 and a second front wheel of the vehicle is held by the second locking means 43.

In the case of a two-wheel drive and traction vehicle, a first front wheel of the vehicle is arranged on the first roller belt 3 and a second front wheel of the vehicle is arranged on the second roller belt 5. A first wheel rear of the vehicle is held by the first locking means 41 and a second rear wheel of the vehicle is held by the second locking means 43.

An embodiment of a test system 101 is described below with reference to the .

The test system 101 is intended to be used to test or carry out tests for all types of motor vehicles, in particular old generation and latest generation.

The test system 101 is intended in particular to provide speed information to the four wheels of a vehicle.

The test system 101 is intended to be installed on a floor, in a removable manner.

The test system 101 is intended to simulate the driving of a vehicle.

The test system 101 can be used to test four-wheel drive vehicles, but also to test two-wheel drive vehicles, particularly of the latest generation, for which it is required to obtain, for electrical/electronic debugging and search for breakdowns, wheel speed information on all four wheels of the vehicle.

The system 101 includes at least one belt, or bench, with idle rollers.

The system 101 may include a first idler belt 102, a second idler belt 103, a third idler belt 104 and a fourth idler belt 105.

Each idler roller belt 102, 103, 104, 105 is intended to receive a wheel of a vehicle.

In the case of a four-wheel drive vehicle, each idler belt 102, 103, 104, 105 is intended to receive a drive wheel of a vehicle.

In the case of a two-wheel drive vehicle, two idler belts 102, 103 (or 104, 105) are intended to each receive a drive wheel and two idler belts 104, 105 (or 102, 103) are each intended to receive a carrying wheel of a vehicle.

The first idler roller belt 102 comprises for example a frame or support frame 102s and at least one rotating roller, in particular four rotating rollers 102a, 102b, 102c, 102d. A space 102e can be provided between a pair of rollers 102a, 102b on the one hand and a pair of rollers 102c, 102d on the other hand so that a wheel of a vehicle can be partially inserted into this space 102e. This results in more precise positioning of a vehicle, which in particular makes it possible to secure the positioning of the vehicle.

The second idler roller belt 103 comprises for example a frame or support frame 103s and at least one rotating roller, in particular four rotating rollers 103a, 103b, 103c, 103d. A space 103e can be provided between a pair of rollers 103a, 103b on the one hand and a pair of rollers 103c, 103d on the other hand so that a wheel of a vehicle can be partially inserted into this space 103e. This results in more precise positioning of a vehicle, which in particular makes it possible to secure the positioning of the vehicle.

The third idler roller belt 104 comprises for example a chassis or support frame 104s and at least one rotating roller, in particular four rotating rollers 104a, 104b, 104c, 104d. A space 104e can be provided between a pair of rollers 104a, 104b on the one hand and a pair of rollers 104c, 104d on the other hand so that a wheel of a vehicle can be partially inserted into this space 104e. This results in more precise positioning of a vehicle, which in particular makes it possible to secure the positioning of the vehicle.

The fourth idler roller belt 105 comprises for example a frame or support frame 105s and at least one rotating roller, in particular four rotating rollers 105a, 105b, 105c, 105d. A space 105e can be provided between a pair of rollers 105a, 105b on the one hand and a pair of rollers 105c, 105d on the other hand so that a wheel of a vehicle can be partially inserted into this space 105e. This results in more precise positioning of a vehicle, which in particular makes it possible to secure the positioning of the vehicle.

The system 101 may include a first adjustable frame 107 and a second adjustable frame 109.

The first idler belt 102 and the second idler belt 103 are in particular intended to be fixed to the first adjustable frame 107 on either side of the first adjustable frame 107 in the transverse direction Y.

The third idler belt 104 and the fourth idler belt 105 are in particular intended to be fixed to the second adjustable frame 109 on either side of the second adjustable frame 109 in the transverse direction Y.

The first idler roller belt 102 is for example intended to be fixed on a lateral side of the first adjustable frame 107 by a first fixing system 112. The first fixing system 112 comprises for example at least one screw and at least one nut .

The second idler roller belt 103 is for example intended to be fixed on the lateral side of the first adjustable frame 107 opposite to that on which the first idler roller belt 102 is fixed, by a second fixing system 113. The second fixing system 113 includes for example at least one screw and at least one nut.

The third idler roller belt 104 is for example intended to be fixed on a lateral side of the second adjustable frame 109 by a third fixing system 114. The third fixing system 114 comprises for example at least one screw and at least one nut .

The fourth idler roller belt 105 is for example intended to be fixed on a lateral side of the second adjustable frame 109 opposite that on which the third idler roller belt 104 is fixed, by a fourth fixing system 115. The fourth system fixing 115 comprises for example at least one screw and at least one nut.

The first adjustable frame 107 may comprise a first spar 122 and a second spar 123. The first and second spars 122, 123 extend in the longitudinal direction X.

The first idler roller belt 102 is for example intended to be fixed to the first spar 122 of the first adjustable frame 107. The second idler roller belt 103 is for example intended to be fixed to the second spar 123 of the first adjustable frame 107.

The first adjustable frame 107 may further comprise a first crosspiece 124 and a second crosspiece 127. The first and second crosspieces 124, 127 extend in the transverse direction Y.

Advantageously, the first crossbar 124 may comprise a first transverse bar 125 and a second transverse bar 126. The second transverse bar 126 is for example configured to slide in the first transverse bar 125.

Advantageously, the second crossbar 127 may comprise a third transverse bar 128 and a fourth transverse bar 129. The fourth transverse bar 129 is for example configured to slide in the third transverse bar 128.

The first transverse bar 125, the second transverse bar 126, the third transverse bar 128 and the fourth transverse bar 129 are for example hollow tubes, for example of section of the order of 50 mm by 50 mm, in particular of shaped section square or round or rectangular.

The first crossbar 125, the second crossbar 126, the third crossbar 128 and the fourth crossbar 129 are for example intended for adjusting the first frame 107 according to the track V of a vehicle to be tested. The first transverse bar 125, the second transverse bar 126, the third transverse bar 128 and the fourth transverse bar 129 are intended in particular to ensure a function of adjustment means 130 of the first frame 107 as a function of the track V of a vehicle at test, in particular by sliding a bar in another bar.

The first crosspiece 124 and the second crosspiece 127 can be graduated. The first crosspiece 124 may include a graduation zone 130a intended to provide a function of adjustment means 130 of the first frame 107 as a function of track V of a vehicle to be tested. The second crosspiece 127 may include a graduation zone 130b intended to provide a function of adjustment means 130 of the first frame 107 as a function of track V of a vehicle to be tested.

The second adjustable frame 109 may comprise a third spar 132 and a fourth spar 133. The third and fourth spars 132, 133 extend in the longitudinal direction X.

The third idler roller belt 104 is for example intended to be fixed to the third spar 132 of the second adjustable frame 109. The fourth idler roller belt 105 is for example intended to be fixed to the fourth spar 133 of the second adjustable frame 109.

The second adjustable frame 109 may further comprise a third crosspiece 134 and a fourth crosspiece 137. The third and fourth crosspieces 134, 137 extend in the transverse direction Y.

Advantageously, the third crossbar 134 may comprise a fifth transverse bar 135 and a sixth transverse bar 136. The sixth transverse bar 136 is for example configured to slide in the fifth transverse bar 135.

Advantageously, the fourth crossbar 137 may comprise a seventh crossbar 138 and an eighth crossbar 139. The eighth crossbar 139 is for example configured to slide in the seventh crossbar 138.

The fifth transverse bar 135, the sixth transverse bar 136, the seventh transverse bar 138 and the eighth transverse bar 139 are for example hollow tubes, for example of section of the order of 50 mm by 50 mm, in particular of shaped section square or round or rectangular.

The fifth crossbar 135, the sixth crossbar 136, the seventh crossbar 138 and the eighth crossbar 139 are for example intended for adjusting the second frame 109 according to the track V of a vehicle to be tested. The fifth transverse bar 135, the sixth transverse bar 136, the seventh transverse bar 138 and the eighth transverse bar 139 are in particular intended to ensure a function of adjustment means 131 of the second frame 109 as a function of the track V of a vehicle at test, in particular by sliding a bar in another bar.

The third crosspiece 134 and the fourth crosspiece 137 can be graduated. The third crosspiece 134 may include a graduation zone 131a intended to provide a function of adjustment means 131 of the second frame 109 as a function of track V of a vehicle to be tested. The fourth crosspiece 137 may include a graduation zone 131b intended to provide a function of adjustment means 131 of the second frame 109 as a function of track V of a vehicle to be tested.

The system 101 may comprise at least one adjustable connection means intended to connect the first frame 107 to the second frame 109.

The system 101 may comprise a first connecting means 141 and a second connecting means 142. The first and second connecting means 141, 142 extend in the longitudinal direction X.

The first connecting means 141 is for example in the shape of a bar. The first connecting means 141 is for example a hollow tube, for example with a section of the order of 40 mm by 40 mm.

The second connecting means 142 is for example in the shape of a bar. The second connecting means 142 is for example a hollow tube, for example with a section of the order of 40 mm by 40 mm.

The first connection means 141 and/or the second connection means 142 are intended in particular to provide a function of adjustment means 146 of the system 101 as a function of the wheelbase of a vehicle to be tested, for example by sliding a bar in another bar.

The first frame 107 can slide along the first connecting means 141 and the second connecting means 142. The second frame 109 can slide along the first connecting means 141 and the second connecting means 142.

Advantageously, the system 101 may comprise a first stop loop 151 connected to the first frame 107, in particular to the first crosspiece 124, for example to the first transverse bar 125.

Advantageously, the system 101 can comprise a second stop loop 152 connected to the second frame 109, in particular to the fourth crosspiece 137, for example to the eighth crossbar 139.

The first stop buckle 151 is for example intended to be connected to a first support and safety strap 153, for example made of nylon. The first retention and safety strap 153 is also intended to be connected to a lashing ring of a vehicle, for example at the rear of the vehicle.

The second stop buckle 152 is for example intended to be connected to a second support and safety strap 154, for example made of nylon. The second retention and safety strap 154 is also intended to be connected to another lashing ring of a vehicle, for example at the front of the vehicle.

The stop buckles 151, 152 associated with a respective strap at the front and rear of a vehicle to be tested make it possible to secure the vehicle.

In the case of a four-wheel drive vehicle, a first rear drive wheel of the vehicle can be arranged on the first roller belt 102 and a second rear drive wheel of the vehicle can be arranged on the second roller belt 103. A first front drive wheel of the vehicle can be arranged on the third roller belt 104 and a second front drive wheel of the vehicle can be arranged on the fourth roller belt 105.

In the embodiment comprising four idler roller belts 102, 103, 104, 105, during a forward walking test, the front wheels drive the rear wheels, even if the rear wheels are carrying. For this, the system 101 can also advantageously comprise a transmission system 160. The rear wheels of the vehicle are thus driven by the front wheels and vice versa.

System 101 can be connected to sensors of the four active wheels. System 101 can be connected to four ABS sensors. This makes it possible to simulate the driving of a vehicle in a real situation.

An advantage of a test system of the type described in connection with the lies in the fact that it allows an increased number of checks to be carried out on sensors connected to the system.

The system 101 may also include a transmission system 160. Such a transmission system 160 is particularly required in the case of a two-wheel drive vehicle. Such a transmission system 160 may not be present in the system 101 and/or may not be used in the case of four-wheel drive vehicles.

The transmission system 160 is intended to carry out motion transmission between the front and rear wheels of a vehicle. The 160 transmission system makes it possible to make the rotation of the front and rear wheels of a vehicle interdependent.

The transmission system 160 may include a transmission shaft 161, in particular splined.

The transmission shaft 161 is intended to connect a roller belt 102, 103 connected to the first frame 107 with a roller belt 104, 105 connected to the second frame 109.

The transmission shaft 161 is for example intended to connect the second roller belt 103 connected to the first frame 107 with the fourth roller belt 105 connected to the second frame 109. The transmission shaft 161 extends in particular in the longitudinal direction x.

Advantageously, the transmission shaft 161 may comprise a first part 162 and a second part 163. The second part 163 is for example configured to slide in the first part 162. This results in a possible adjustment of the transmission shaft 161 in depending on the wheelbase of a vehicle to be tested.

The second part 163 has for example an exterior wall provided with grooves.

The first part 162 is for example a hollow shaft. The first part 162 has for example an interior wall provided with patterns complementary to the grooves of the second part 163, for example ribs. The grooves of the second part 163 are configured to engage with the ribs of the first part 162.

The grooves of the second part 163 and the complementary patterns of the first part 162 of the transmission shaft 161 make it possible to limit the play and increase the transmission forces.

The transmission system 160 may further comprise a first angle transmission device 164 and a second angle transmission device 165.

The transmission shaft 161 is intended to be arranged between the first angle transmission device 164 and the second angle transmission device 165.

The first angle transmission device 164 is in particular an angle transmission device of the order of 90°. The second angle transmission device 165 is in particular an angle transmission device of the order of 90°.

The first angle transmission device 164 is for example intended to carry out a transmission of movement at a right angle between the second idler roller belt 103 and the transmission shaft 161. The second angle transmission device 165 is for example example intended to achieve transmission of movement at a right angle between the fourth idler roller belt 105 and the transmission shaft 161.

The embodiment described in relation to the is particularly advantageous for the latest generation vehicles. It makes it possible to carry out a greater number of tests than the embodiment described in relation to the .

A mode of execution of a method of assembling a system 1 of the type described in relation to the and testing a vehicle is described below. This mode of execution is described in the case of a two-wheel drive vehicle with traction or propulsion.

Preferably, the assembly of such a system 1 comprising at least one idler roller belt can be carried out before mounting a vehicle on it.

Once the system 1 is assembled, the drive wheels of the vehicle are installed on the idler roller belts 3, 5 and the supporting wheels are placed on the ground and secured with the locking means 41, 43.

The rollers are activated only by the rotation of the drive wheels, the carrying wheels being blocked.

The vehicle cannot escape from system 1 because two safety straps 53, 54 are present.

In a first step, the first frame 7 and the second frame 17 are adjusted, in particular according to the front track and the rear track of a vehicle to be tested.

In the case of a propulsion vehicle, the front track is adjusted on the second frame 17 and the rear track on the first frame 7. In the case of a traction vehicle, the front track is adjusted on the first frame 7. and the rear track on the second frame 17.

In a second step, the at least one idle roller belt is mounted and fixed, in particular the first idle roller belt 3 and the second idle roller belt 5, on the first frame 7, in particular respectively by the first system of fixing 4 and the second fixing system 6 each comprising at least one screw and at least one nut.

In a third step, the at least one connecting means, in particular the first connecting means 31 and the second connecting means 32, are inserted and fixed in the second frame 17, in particular by a fixing system comprising at least one screw and at least one nut.

In a fourth step, the first frame 7 is inserted onto the at least one connecting means, in particular onto the first connecting means 31 and the second connecting means 32, by adjusting and tightening the first connecting means and the second means of connection to a chosen wheelbase.

In a fifth step, a vehicle to be tested is set up on the system 1, at least one driving wheel being placed on the at least one idle roller belt, in particular a driving wheel being positioned on the rollers of the first idler belt 3 and the other driving wheel being positioned on the rollers of the second idler belt 5.

In a sixth step, the at least one locking means is placed on at least one carrying wheel of the vehicle to be tested and the at least one locking means is fixed, in particular by a fixing system comprising at least one at least one screw and at least one nut. In particular, the first locking means 41 is placed on a carrier wheel of the vehicle to be tested and the second locking means 43 is placed on the other carrier wheel of the vehicle to be tested.

In a seventh step, at least one retaining strap 53, 54 is installed between the first stop loop 51 of the first frame 7 and/or the second stop loop 52 of the second frame 17 and the respective lashing rings of the vehicle to be tested. In particular, the first retaining strap 53 is installed between the first stopping loop 51 and a lashing ring of the vehicle to be tested and the second retaining strap 54 is installed in particular between the second stopping loop 52 and another ring of securing the vehicle to be tested.

In an eighth step, the drive wheels of the vehicle are set in motion.

A mode of execution of a method of assembling a system 101 of the type described in relation to the and testing a vehicle is described below. This mode of execution is described in the case of a two-wheel drive vehicle. In the case of a four-wheel drive vehicle, the fifth step of mounting the transmission system may not be implemented.

Preferably, the assembly of such a system comprising at least one idler roller belt can be carried out before mounting a vehicle on it.

Once the system 101 is assembled, the vehicle wheels are installed on the idler roller belts 102, 103, 104, 105.

In a first step, the first and second idler roller belts 102, 103 are mounted and fixed on the first frame 107, in particular respectively by the first fixing system 112 and the second fixing system 113 each comprising at least one screw and at least one nut, and the third and fourth idler roller belts 104, 105 are mounted and fixed on the second frame 109, in particular respectively by the third fixing system 114 and the fourth fixing system 115 each comprising at least one screw and at least one nut.

In a second step, the first frame 107 and the second frame 109 are adjusted, in particular as a function of the front track and the rear track of a vehicle to be tested, in particular by a fixing system comprising at least one screw and at least one nut.

In a third step, the at least one connecting means, in particular the first connecting means 141 and the second connecting means 142, are inserted and fixed in the second frame 109, in particular by a fixing system comprising at least one screw and at least one nut.

In a fourth step, the first frame 7 is inserted onto the at least one connecting means, in particular onto the first connecting means 31 and the second connecting means 32, by adjusting and tightening the first connecting means and the second means of connection to a chosen wheelbase. The first connecting means and the second connecting means are adjusted to the value of the wheelbase of the vehicle to be tested and tightening is carried out, in particular using a fixing system comprising at least one screw and at least one nut.

In a fifth step, the transmission system 160 is assembled. The transmission shaft 161, in particular splined, is mounted between the first angle transmission device 164 and the second angle transmission device 165.

In a sixth step, a vehicle to be tested is set up on the system 101, a wheel being placed on each idler roller belt 102, 103, 104, 105. In the case of a two-wheeled vehicle driving and propulsion, one driving wheel can be placed on the rollers of the first idler belt 102 and the other driving wheel can be arranged on the rollers of the second idler belt 103. A carrier wheel is arranged on the third belt idler rollers 104 and another carrying wheel is arranged on the fourth idler roller belt 105. In the case of a four-wheel drive vehicle, each drive wheel is arranged on the rollers of an idler roller belt 102, 103 , 104, 105.

In a seventh step, at least one retaining strap 153, 154 is installed between the first stop loop 151 of the first frame 107 and/or the second stop loop 152 of the second frame 109 and the respective lashing rings of the vehicle to be tested. We install in particular the first retaining strap 153 between the first stop loop 151 and a lashing ring of the vehicle to be tested and we install in particular the second retaining strap 154 between the second stop loop 152 and another ring of securing the vehicle to be tested.

In an eighth step, the wheels of the vehicle are set in motion.

An advantage of a system of the type described above lies in the fact that it is removable and/or transportable, for example in a utility or station wagon type vehicle. A space on the ground can thus be freed when the system is removed.

Another advantage of a system of the type described above is linked to the fact that it takes up little space.

Another advantage of a system of the type described above lies in the fact that it can be assembled and dismantled at the test site (garage, museum, etc.).

Another advantage of a system of the type described above is that it is simple, robust and reliable. Such a system does not require the installation of any electrical or electronic equipment on it. Such a system does not require a drive system with motors or a braking system, nor electrical or electronic acquisition chains.

Another advantage of a system of the type described above is linked to the fact that it makes it possible to avoid moving one or more vehicles in transport to the site of the intervention (museums, etc.).

Another advantage of a system of the type described above lies in the fact that it has a reduced cost.

Another advantage of a system of the type described above lies in the fact that it allows traction vehicles and propulsion vehicles to be tested.

Another advantage of a system of the type described above is that it allows testing of four-wheel drive vehicles and two-wheel drive vehicles.

The invention applies to all areas using four-wheeled vehicles.

Although the invention has been described in the case of systems comprising at least one pair of idler roller mats, a single roller mat, on a single right or left side of a vehicle, could be used. Such a system would then make it possible to turn a single wheel.

Claims (10)

System (1; 101) for testing a vehicle (200), in particular an automobile, the system comprising:
- at least one idle roller belt (3, 5; 102, 103) intended to receive a drive wheel of a vehicle;
- a first adjustable frame (7; 107), said at least one roller belt being intended to be fixed to the first frame;
- a second adjustable frame (17; 109);
- at least one adjustable connection means (31, 32; 141, 142) intended to connect the first frame to the second frame. System according to claim 1, comprising a first idler belt (3; 102) and a second idler belt (5; 103) intended to be fixed to the first adjustable frame (7; 107) on either side of the first adjustable frame, in particular respectively by a first fixing system (4; 112) and a second fixing system (6; 113) each comprising at least one screw and at least one nut. System according to claim 1 or 2, further comprising at least one locking means (41, 43) intended to lock a supporting wheel (203, 204) of a vehicle (200) and intended to be fixed to the second adjustable frame ( 17), in particular a first locking means (41) and a second locking means (43) intended to be fixed second adjustable frame (17) on either side of the second adjustable frame, in particular respectively by a third fixing system (42) and a fourth fixing system (44) each comprising at least one screw and at least one nut. System according to claim 1 or 2, further comprising at least one idle roller belt (104, 105) intended to support a drive wheel or a carrier wheel of a vehicle and intended to be fixed to the second adjustable frame (109), in particular a third idler belt (104) and a fourth idler belt (105) intended to be fixed second adjustable frame (109) on either side of the second adjustable frame, in particular respectively by a third fixing system (114) and a fourth fixing system (115) each comprising at least one screw and at least one nut. System according to claim 4, further comprising a transmission system (160) comprising:
- a transmission shaft (161), in particular grooved, the shaft being intended to connect a roller belt (103) connected to the first frame (107) with a roller belt (105) connected to the second frame (109), and
- a first angle transmission device (164) and a second angle transmission device (165), the shaft (161) being intended to be arranged between the first angle transmission device (164) and the second angle transmission device (165). System according to any one of the preceding claims, in which:
- the first adjustable frame (7; 107) comprises a first spar (8; 122), a second spar (9; 123), a first crosspiece (10; 124) and a second crosspiece (13; 127), the first crosspiece (10; 124) comprising a first transverse bar (11; 125) and a second transverse bar (12; 126), the second transverse bar (12; 126) being configured to slide in the first transverse bar (11; 125), the second crossbar (13; 127) comprising a third crossbar (14; 128) and a fourth crossbar (15; 129), the fourth crossbar (15; 129) being configured to slide in the third crossbar (14; 128); and or
- the second adjustable frame (17; 109) comprises a third spar (18; 132), a fourth spar (19; 133), a third crossbar (20; 134) and a fourth crossbar (23; 137), the third crossbar (20; 134) comprising a fifth transverse bar (21; 135) and a sixth transverse bar (22; 136), the sixth transverse bar (22; 136) being able to slide in the fifth transverse bar (21; 135), the fourth crossbar (23; 137) comprising a seventh crossbar (24; 138) and an eighth crossbar (25; 139), the eighth crossbar (25; 139) being able to slide in the seventh crossbar (24; 138). System according to any one of the preceding claims, in which the at least one adjustable connection means comprises a first connection means (31; 141) and a second connection means (32; 142). System according to any one of the preceding claims, comprising a first stop loop (51; 151) connected to the first frame (7; 107) and/or a second stop loop (52; 152) connected to the second frame ( 17; 109). Method of testing a vehicle using a system (1) according to claim 3 and claim 8, comprising the following steps:
- adjust the first frame (7) and the second frame (17);
- fix the at least one idler roller belt (3, 5) on the first frame (7), in particular by the first fixing system (4) and/or the second fixing system (6);
- insert and fix the first connecting means (31) and/or the second connecting means (32) in the second frame (17);
- insert the first frame (7) on the first connecting means (31) and/or the second connecting means (32), by adjusting the first connecting means and the second connecting means to a chosen wheelbase (E);
- position a vehicle (200) on the system (1), at least one drive wheel (201) being arranged on the at least one idler roller belt (3, 5);
- place the at least one locking means (41, 43) on at least one carrying wheel (203, 204) and fix it, in particular by a fixing system comprising at least one screw and at least one nut;
- install at least one retaining strap (53, 54) between the first stopping loop (51) and/or the second stopping loop (52) and respective lashing rings of the vehicle;
- set the vehicle's drive wheels in motion. Method of testing a vehicle using a system (101) according to claim 5 and claim 8, comprising the following steps:
- fix the first idler belt (102) and the second idler belt (103) on the first frame (107), in particular by the first fixing system (112), and fix the third idler belt (104 ) and the fourth idler roller belt (105) on the second frame (109), in particular respectively by the third fixing system (114) and the fourth fixing system (115);
- adjust the first frame (107) and the second frame (109);
- insert and fix the first connecting means (141) and/or the second connecting means (142) in the second frame (109);
- insert the first frame (107) on the first connecting means (141) and/or the second connecting means (142), by adjusting the first connecting means and the second connecting means to a chosen wheelbase (E);
- possibly mount the transmission shaft (161), in particular splined, between the first angle transmission device (164) and the second angle transmission device (165);
- position a vehicle (200) on the system, each wheel of the vehicle being placed on an idler roller belt (102, 103, 104, 105);
- install at least one retaining strap (153, 154) between the first stopping loop (151) and/or the second stopping loop (152) and respective lashing rings of the vehicle;
- set the vehicle in motion.