JP2014215226A - Testing apparatus for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a testing apparatus for vehicles that can provide a vehicle body with forces similar to inertial forces working on the vehicle body at the time of accelerating, decelerating, turning or some other action of a real vehicle without allowing the vehicle body to run relative to members supporting wheels of the vehicle.SOLUTION: A testing apparatus 1 for vehicles comprises a test item mounting body 2 to which four axles 21S to 24S are fitted and on which a test sample is to be mounted; a first motion base 3 for supporting the test sample mounting body 2 and causing the test sample mounting body 2 to make motions of six degrees of freedom, and four second motion bases 4 to 7 for supporting the respective axles 21S to 24S and causing the respective axles to make motions of six degrees of freedom. When the first motion base and each second motion base are in their respective neutral positions, the vertical position of a movable base 12 of the first motion base and that of the movable base 12 of each second motion base are equal.

Description

  The present invention relates to a vehicle test apparatus for performing performance tests of automobile parts and vehicles.

  In Patent Document 1, as a vehicle test apparatus, a pair of front and rear lateral movable bases that can move in the lateral direction, and four sets of six-degree-of-freedom hydraulic cylinder groups that are provided on the upper surface of these laterally movable bases, one on each side. Four swivel lifts connected to the upper ends of these six-degree-of-freedom hydraulic cylinder groups, and four rotating belts provided on the four swivel lifts, respectively, on which the four wheels of the vehicle are placed An apparatus with which is provided is described.

JP 2008-175778 A JP 2006-138827 A JP 2009-536736 A

An inertial force acts on the vehicle body when the actual vehicle is accelerated, decelerated, or turned. In the above-described conventional device, in order to apply such inertial force to the vehicle body, it is necessary to drive the vehicle body relatively to the rotation belt supporting the wheels by rotating the rotation belt.
The object of the present invention is to cause the same force as the inertial force acting on the vehicle body during acceleration, deceleration, turning, etc. of the actual vehicle without causing the vehicle body to travel relative to the member supporting the axle. An object of the present invention is to provide a vehicle testing apparatus that can be applied to a vehicle body.

  In order to achieve the above object, the invention according to claim 1 includes four axles (21S, 22S, 23S, 24S) corresponding to four wheels of a left front wheel, a right front wheel, a left rear wheel, and a right rear wheel. The test product mounting body (2) on which the test products (40, 50) are mounted, and the test product mounting vehicle body are supported, and the test product mounting vehicle body is allowed to move with 6 degrees of freedom. A first motion base (3) for supporting the respective axles and four second motion bases (4, 5, 6, 7; 4A, 5A, 6A, 7A), and when the first motion base and each second motion base are in a neutral position, the height position of the first motion base and the height position of each second motion base are Each module is And a spacer (101) is interposed between the first motion base and the test article mounting body and / or between each second motion base and each corresponding axle. This is a vehicle testing apparatus (1; 1A). In addition, although the alphanumeric character in parentheses represents a corresponding component in an embodiment described later, of course, the scope of the present invention is not limited to the embodiment. The same applies hereinafter.

  In the present invention, a force can be directly applied to the test article mounting body by the first motion base while each axle is supported by the second motion base. As a result, the same force as the inertial force that acts on the vehicle body during acceleration, deceleration, and turning of the actual vehicle can be performed without causing the vehicle body to travel relative to the member that supports the wheel (axle). , It can be given to the vehicle body for the test product.

In addition, when changing the test article mounting body, only the spacer height is changed without changing the first motion base and each second motion base. However, the necessary movable range can be maintained.
According to a second aspect of the present invention, the vertical length of the second motion base when each of the second motion bases (4A, 5A, 6A, 7A) is in a neutral position is such that the first motion base is neutral. 2. The vehicle according to claim 1, wherein a spacer (102) is interposed between each of the second motion bases and an installation surface thereof, which is shorter than the vertical length of the first motion base when in the position. Test equipment.

  According to a third aspect of the present invention, each of the motion bases (3, 4 to 7; 3, 4A to 7A) includes a fixed base (11), a movable base (12) disposed above the fixed base, The vehicle test apparatus according to claim 1, further comprising an actuator (13) connected between the fixed base and the movable base and causing the movable base to move with six degrees of freedom.

FIG. 1 is a schematic perspective view schematically showing the appearance of the vehicle inspection apparatus according to the first embodiment of the present invention. FIG. 2 is a front view schematically showing the vehicle inspection apparatus of FIG. FIG. 3 is a side view schematically showing the vehicle inspection apparatus of FIG. 1. 4 is a plan view schematically showing the vehicle inspection apparatus of FIG. FIG. 5A and FIG. 5B are schematic diagrams for explaining an example of control of each motion base when simulating a vehicle running state during acceleration on a flat ground. FIG. 5A is a state where the vehicle is stationary on a flat ground. FIG. 5B is a schematic diagram showing a vehicle running state during acceleration on a flat ground. 6A and 6B are schematic diagrams for explaining an example of control of each motion base when simulating a vehicle running state during acceleration on a slope, and FIG. 6A is a state where the vehicle is stationary on the slope. FIG. 6B is a schematic diagram illustrating a vehicle running state during acceleration on a slope. FIG. 7A and FIG. 7B are schematic diagrams for explaining an example of control of each motion base in the case of simulating the vehicle traveling state at the time of turning, and FIG. 7A is a schematic diagram showing a state of traveling in a straight line. FIG. 7B is a schematic diagram showing a vehicle running state during turning. FIG. 8 is a front view schematically showing a vehicle inspection apparatus according to the second embodiment of the present invention. FIG. 9 is an explanatory diagram for explaining that the vertically movable range of the first motion-based cylinder drive unit is shifted from the vertically movable range of the second motion-based cylinder drive unit. is there.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a schematic perspective view schematically showing the appearance of the vehicle inspection apparatus according to the first embodiment of the present invention. FIG. 2 is a front view schematically showing the vehicle inspection apparatus of FIG. FIG. 3 is a side view schematically showing the vehicle inspection apparatus of FIG. 1. 4 is a plan view schematically showing the vehicle inspection apparatus of FIG. In FIG. 4, the test article mounting vehicle body is omitted.

  The vehicle inspection apparatus 1 is equipped with four axles 21S, 22S, 23S, 24S corresponding to four wheels, that is, a left front wheel 21, a right front wheel 22, a left rear wheel 23, and a right rear wheel 24, and a test product is mounted. A test product mounting vehicle body 2, a first motion base 3 for supporting the test product mounting vehicle body 2 and causing the test product mounting vehicle body 2 to move in six degrees of freedom, and the axles 21S, 22S, and 23S. , 24S and four second motion bases 4, 5, 6, 7 for causing each of the axles 21S, 22S, 23S, 24S to move with 6 degrees of freedom.

1 to 4, the front end of the test article mounting vehicle body 2 is indicated by reference numeral 2f, and the rear end of the test article mounting vehicle body 2 is indicated by reference numeral 2r. A left front wheel 21, a right front wheel 22, a left rear wheel 23, and a right rear wheel 24 are coupled to the four axles 21S, 22S, 23S, 24S of the test article mounting body 2 so as to be integrally rotatable.
A test product for various automobile parts is mounted on the test product mounting body 2. In this embodiment, the test vehicle mounting body 2 includes an electric power steering device (EPS) 40 and a rear wheel drive module 50 for driving the left rear wheel 23 and the right rear wheel 24 by an electric motor. Are mounted as test products.

  In this embodiment, the EPS 40 is a column assist type EPS. As is well known, the EPS 40 includes a steering wheel 81, a steering mechanism 82 that steers the front wheels 21 and 22 in conjunction with the rotation of the steering wheel 81, and steering assistance for assisting the driver's steering. Mechanism 83. The steering wheel 81 and the steering mechanism 82 are mechanically connected via a steering shaft.

  The steering mechanism 82 includes a rack and pinion mechanism including a pinion provided at the lower end of the steering shaft and a rack shaft provided with a rack that meshes with the pinion. Each end of the rack shaft is connected to the front wheels 21 and 22 via a tie rod 84, a knuckle arm 84, and the like. The steering assist mechanism 83 includes an electric motor (assist motor) for generating a steering assist force and a speed reduction mechanism for transmitting the output torque of the assist motor to the steering shaft.

Further, the EPS 40 includes an ECU (Electronic Control Unit) (EPS ECU) for controlling the assist motor and a linear displacement sensor for detecting the axial displacement position of the rack shaft.
The rear wheel drive module 50 transmits an electric motor (rear wheel drive motor) for rotationally driving the rear wheel axles 23S and 24S and the rotational force of the rear wheel drive motor to the rear wheel axles 23S and 24S. Rotation angle for detecting the rotation angle of the rear wheel axle 23S, 24S, or any one of the transmission mechanism, the ECU for controlling the rear wheel drive motor (rear wheel drive motor ECU), and the rear wheel axles 23S, 24S Includes sensors. The transmission mechanism includes a clutch and a speed reduction mechanism. The transmission mechanism may include only one of the clutch and the speed reduction mechanism.

  Each motion base 3, 4, 5, 6, 7 is fixed on a surface plate 10 placed on the floor. As is well known, each motion base 3, 4, 5, 6, 7 has a fixed base 11 fixed to the surface plate 10 and a movable base (moving base) 12 arranged above the fixed base 11. And an actuator 13 connected between the fixed base 11 and the movable base 12 for causing the movable base 12 to move in six degrees of freedom (back and forth, left and right, up and down, roll, pitch and yaw movement), and an actuator 13 It is comprised from the motion controller (illustration omitted) which controls drive. The actuator 13 is composed of six electric cylinders.

  1 to 4 show a state in which the first motion base 3 and the second motion bases 4, 5, 6, and 7 are in the neutral position. The neutral position of the motion base means a state in which the movable base of the motion base is located at the center of the movable range for all of the six degrees of freedom motion. When the first motion base 3 and the second motion bases 4 to 7 are in the neutral position, the height position of the movable base 12 of the first motion base 3 and the height of the movable base 12 of each second motion base 4 to 7 are set. The position is equal.

  When each of the motion bases 3 to 7 is in the neutral position, the first motion base 3 and the test article mounting vehicle body are set such that the position / posture of the test article mounting vehicle body 2 becomes a preset reference position / posture. 2 and / or between the second motion bases 4-7 and the corresponding axles 21S, 22S, 23S, 24S. In this embodiment, the reference position / posture of the test article mounting vehicle body 2 is such a position / posture that the test specimen mounting vehicle body 2 is in a substantially horizontal posture (a posture substantially parallel to the surface of the surface plate 10). . In this embodiment, when the test article mounting vehicle body 2 is at the reference position / posture, the supported point on the vehicle body side to be supported by the first motion base 3 (the bottom center portion of the test article mounting vehicle body 2) is The vehicle body side supported point to be supported by each of the second motion bases 4 to 7 (the lowermost part of each wheel 21, 22, 23, 24) is at a higher position. Therefore, in this embodiment, the spacer 101 is interposed only between the first motion base 3 and the test article mounting vehicle body 2. However, even in this case, the axles 21S, 22S, 23S, 24S (the wheels 21, 22) corresponding to the second motion bases 4 to 7 and between the first motion base 3 and the test article mounting vehicle body 2 are used. , 23, 24) may be provided with spacers.

  In the first embodiment, the vertical length of each second motion base when each of the second motion bases 4 to 7 is in the neutral position is the first motion base when the first motion base 3 is in the neutral position. Equal to 3 in the vertical direction. However, the first motion base 3 uses a motion base in which the generated force of the actuator is larger than that of the second motion bases 4 to 7.

A spacer 101 is fixed on the upper surface of the movable base 12 of the first motion base 3. On the upper surface of the spacer 101, the test article mounting vehicle body 2 is fixed in a state where the central portion of the test article mounting vehicle body 2 is placed. That is, the central portion of the lower surface of the test article mounting vehicle body 2 is attached to the upper surface of the spacer 101.
A left front wheel 21 is placed on the movable base 12 of the second motion base 4 on the left front side. A right front wheel 22 is placed on the movable base 12 of the second motion base 5 on the right front side. A left rear wheel 23 is placed on the movable base 12 of the second motion base 6 on the left rear side. A right rear wheel 24 is placed on the movable base 12 of the second motion base 7 on the right rear side.

  In this vehicle inspection apparatus 1, the test article mounting vehicle body 2 is supported by the first motion base 3 via a spacer 101. The wheels 21, 22, 23, and 24 are supported by the second motion bases 4, 5, 6, and 7, respectively. In other words, the outer ends of the axles 21S, 22S, 23S, and 24S are supported by the second motion bases 4, 5, 6, and 7 via the wheels 21, 22, 23, and 24, respectively.

  Therefore, in this vehicle inspection apparatus 1, various vehicle body postures can be created by driving and controlling the actuator 13 of the first motion base 3. Various road surface conditions can be created by individually controlling the actuators 13 of the second motion bases 4, 5, 6, and 7. Therefore, it is possible to simulate various vehicle running states by individually controlling the actuators 13 of the motion bases 3, 4, 5, 6, and 7.

  In the vehicle inspection apparatus 1, the first motion base 3 directly supports the test product mounting body 2 with the axles 21 </ b> S to 24 </ b> S supported by the second motion bases 4, 5, 6, and 7. You can apply power. As a result, the test article is mounted on the member supporting the wheels 21 to 24 (axles 21S to 24S) with the same force as the inertial force acting on the vehicle body during acceleration, deceleration and turning of the actual vehicle. The test vehicle body 2 can be given to the test product mounting body 2 without causing the vehicle body 2 to travel relatively.

In the vehicle inspection apparatus 1, the test article mounting vehicle body 2 can be yawed by the first motion base 3. Thereby, yawing exercise | movement can be simulated.
Further, in this vehicle inspection apparatus 1, when changing the test article mounting body 2, the first motion base 3 and the second motion bases 4, 5, 6, 7 are not changed. 3 and the test vehicle mounting body 2 and between the second motion bases 4 to 7 and the corresponding axles 21S, 22S, 23S, 24S, only the height of the spacers is provided. By changing, it is possible to maintain the necessary movable range for the test article mounting body after the change.

  Hereinafter, each motion-based control example in the case of simulating various vehicle running states will be described more specifically. In the following description, the X-axis refers to an axis that passes through the center of gravity of the test article mounting vehicle body 2 and extends in the front-rear direction of the vehicle body. The Y axis refers to an axis that passes through the center of gravity of the test article mounting vehicle body 2 and extends in the left-right direction of the vehicle body. Further, the Z axis refers to an axis that passes through the center of gravity of the test article mounting vehicle body 2 and extends in the vertical direction of the vehicle body. That is, the X axis, the Y axis, and the Z axis are coordinate systems (hereinafter referred to as “vehicle body coordinate system”) fixed to the test article mounting vehicle body 2.

5A and 5B are schematic diagrams for explaining an example of control of each motion base in the case of simulating a vehicle running state during acceleration on a flat ground.
FIG. 5A shows a state where the vehicle is stationary on a flat ground. In this case, each motion base 3, 4, 5, 6, 7 is in a neutral position. Therefore, the XY plane defined by the X axis and Y axis of the vehicle body coordinate system is substantially parallel to the surface of the surface plate 10.

  The vehicle running state during acceleration on flat ground can be made as follows. That is, referring to FIG. 5B, all the second motion bases 4, 5, 6, and 7 are fixed to the stationary state of FIG. 5A, and the movable base 12 of the first motion base 3 is moved in the first direction around the Y axis ( The actuator 13 of the first motion base 3 is driven so as to rotate in the direction indicated by the arrow. The first direction around the Y axis is a direction in which the front end of the test article mounting body 2 is lifted upward.

  That is, the movable base 12 of the first motion base 3 is rotationally driven in the first direction around the Y axis in a state where the wheels 21 to 24 are supported by the corresponding second motion bases 4, 5, 6, and 7. . Thereby, the rotational force that rotates the test article mounting body 2 in the first direction around the Y axis is directly applied to the test article mounting body 2. That is, a force similar to the inertial force acting on the vehicle body during acceleration of the actual vehicle can be directly applied to the test article mounting vehicle body 2. Thereby, the vehicle running state during acceleration on a flat ground can be simulated without causing the test article mounting body 2 to travel relative to the member supporting the wheels 21 to 24. In this case, pitching behavior evaluation, suspension behavior evaluation, and the like are possible.

When simulating the vehicle running state during deceleration, the direction of the rotational force around the Y axis applied to the movable base 12 of the first motion base 3 is the first in the case of simulating the vehicle running state during acceleration. The direction may be opposite to the direction (the direction in which the rear end of the test article mounting vehicle body 2 is lifted upward).
6A and 6B are schematic diagrams for explaining an example of control of each motion base in the case of simulating a vehicle traveling state during acceleration on a slope. A description will be given of the uphill slope.

  FIG. 6A shows a state where the vehicle is stationary on a slope. In this case, the upper surface of the movable base 12 of each of the motion bases 3, 4, 5, 6 and 7 is parallel to the assumed slope surface. The height of the movable base 12 of each of the motion bases 3, 4, 5, 6 and 7 is parallel to the slope surface assumed by the XY plane defined by the X axis and the Y axis of the vehicle body coordinate system. Have been adjusted so that.

  This stationary state can be created from a stationary state on a flat ground as follows. That is, the movable base 12 of the first motion base 3 is rotated by a predetermined amount in the first direction around the Y axis according to the inclination angle of the slope. At the same time, the movable base 12 of each of the second motion bases 4, 5, 6, and 7 is rotated by a predetermined amount in the first direction around the Y axis according to the inclination angle of the slope, and the Z-axis direction (vertical direction) ). The first direction around the Y axis is a direction in which the front end of the test article mounting body 2 is lifted. In this case, the movable bases 12 of the front two second motion bases 4 and 5 are moved upward, and the movable bases 12 of the rear two second motion bases 6 and 7 are moved downward. .

  The vehicle running state during acceleration on a slope can be made as follows from the stationary state of FIG. 6A. That is, with reference to FIG. 6B, the movable bases 12 of all the second motion bases 4, 5, 6 and 7 are fixed in a stationary state on the slope of FIG. 6A, and the movable bases 12 of the first motion base 3 are The actuator 13 of the first motion base 3 is driven so as to rotate in a first direction around the axis (direction indicated by an arrow).

  That is, the movable base 12 of the first motion base 3 is rotationally driven in the first direction around the Y axis in a state where the wheels 21 to 24 are supported by the corresponding second motion bases 4, 5, 6, and 7. . Thereby, the rotational force that rotates the test article mounting body 2 in the first direction around the Y axis is directly applied to the test article mounting body 2. That is, a force similar to the inertial force acting on the vehicle body when accelerating on the slope of the actual vehicle (uphill in this example) can be directly applied to the test article mounting vehicle body 2. Thereby, the vehicle running state during acceleration on a hill can be simulated without causing the test article mounting body 2 to travel relative to the member supporting the wheels 21 to 24. In this case, pitching behavior evaluation, suspension and drive shaft behavior evaluation, hub bearing evaluation, and the like are possible.

When simulating the vehicle running state when decelerating on a slope, the direction of the rotational force around the Y axis applied to the movable base 12 of the first motion base 3 is set to the vehicle running during acceleration on a slope. A direction opposite to the first direction in the case of simulating the state (a direction in which the rear end of the test article mounting vehicle body 2 is lifted upward) may be used.
FIG. 7A and FIG. 7B are schematic diagrams for explaining an example of control of each motion base in the case of simulating the vehicle traveling state at the time of turning.

FIG. 7A shows a state where the vehicle is traveling straight. A case where the vehicle turns leftward from this state as shown in FIG. 7B will be described.
Referring to FIG. 7B, in order to turn the test article mounting vehicle body 2 leftward, the movable base 12 of the first motion base 3 is rotated counterclockwise around the Z axis in plan view. Further, the movable bases 12 of all the second motion bases 4, 5, 6, and 7 are rotated counterclockwise around the Z axis in plan view, and the wheels 21 are accompanied with the turning movement of the vehicle body 2 for mounting the test article. To move in the XY plane defined by the X-axis and Y-axis of the vehicle body coordinate system so that .about.24 moves. As a result, the movable bases 12 of the second motion bases 4, 5, 6, and 7 move from the position indicated by the two-dot chain line in FIG. 7B to the position indicated by the solid line. Thereby, the vehicle running state at the time of turning can be simulated. In this case, it is possible to evaluate the axial load of the axles 21S to 24S, evaluate the steering torque, evaluate the rack axial force, evaluate the hub bearing, and the like.

FIG. 8 is a front view schematically showing a vehicle inspection apparatus according to the second embodiment of the present invention. FIG. 8 shows a state in which the first motion base 3 and the second motion bases 4A, 5A, 6A, and 7A are in the neutral position.
Also in the second embodiment, as in the first embodiment, when the first motion base 3 and each of the second motion bases 4A, 5A, 6A, and 7A are in the neutral position, the movable base 12 of the first motion base 3 The height position is equal to the height position of the movable base 12 of each second motion base 4A, 5A, 6A, 7A. Similarly to the first embodiment, when each of the motion bases 3, 4A, 5A, 6A, and 7A is in the neutral position, the test article mounting vehicle body 2 assumes a substantially horizontal posture (reference position / posture). As described above, the spacer 101 is interposed between the first motion base 3 and the test article mounting body 2.

  In the second embodiment, the vertical length of each second motion base when each second motion base 4A, 5A, 6A, 7A is in the neutral position is the same as that when the first motion base 3 is in the neutral position. It is shorter than the length of the first motion base 3 in the vertical direction. That is, the generated force of the actuators of the second motion bases 4A, 5A, 6A, 7A may be smaller than the generated force of the actuators of the first motion base 3, so that the second motion bases 4A, 5A, 6A, 7A A smaller motion base than the one motion base 3 is used.

  In order to make the height position of the movable base 12 equal in each motion base 3, 4A, 5A, 6A, 7A when each motion base 3, 4A, 5A, 6A, 7A is in the neutral position, the second embodiment. Then, a spacer 102 is provided between the installation surface of each second motion base 4A, 5A, 6A, 7A (the surface of the surface plate 10) and the fixed base 11 of each second motion base 4A, 5A, 6A, 7A. Intervene.

  As described above, the actuator 13 of each motion base 3, 4A, 5A, 6A, 7A is composed of six electric cylinders. Each electric cylinder includes an electric motor for driving the electric cylinder (hereinafter referred to as “cylinder driving motor”), a speed reduction mechanism for amplifying the torque of the cylinder driving motor, and a rotational force obtained by the speed reduction mechanism as a piston. It includes a conversion mechanism that converts the axial movement of the rod. A cylinder drive unit including a speed reduction mechanism and a cylinder drive motor is provided at a lower portion of a cylinder tube of the electric cylinder.

  In the second embodiment, the second motion bases 4A, 5A, 6A, and 7A are installed on the surface plate 10 via spacers 102. Therefore, when viewed from the front or the side, the vertically movable range of the cylinder drive unit of the first motion base 3 and the vertically movable of the cylinder drive units of the second motion bases 4A, 5A, 6A, 7A The range can be shifted.

  This point will be described with reference to FIG. FIG. 9 shows one electric cylinder 13 a in the first motion base 3 and one electric cylinder 13 b in the second motion base 5 A for supporting the left front wheel 22. A cylinder drive unit 16a including a gear housing 14a and a cylinder drive motor 15a is attached to the lower part of the cylinder tube of the electric cylinder 13a of the first motion base 3.

  On the other hand, a cylinder drive unit 16b including a gear housing 14b and a cylinder drive motor 15b is attached to the lower part of the cylinder tube of the electric cylinder 13b of the second motion base 5A. Since the second motion base 5A is installed on the surface plate 10 via the spacer 102, the fixed base 11 of the second motion base 5A is located above the fixed base 11 of the first motion base 3. . Therefore, when viewed from the front or side, the vertically movable range of the cylinder drive unit 16a of the first motion base 3 is shifted from the vertically movable range of the cylinder drive unit 16b of the second motion base 5A. Is possible. As a result, as shown by broken lines in FIG. 9, when the electric cylinder 13a of the first motion base 3 and the electric cylinder 13b of the second motion base 5A are swung around the lower joint, both cylinders are moved. Interference between the drive units 16a and 16b can be suppressed or avoided. The same applies to the other second motion bases 4A, 6A, and 7A.

  That is, in the second embodiment, when each motion base 3, 4A, 5A, 6A, 7A is shaken, between the first motion base 3 and each second motion base 4A, 5A, 6A, 7A, Interference with the cylinder drive unit can be suppressed or avoided. Further, since the first motion base 3 and the second motion bases 4A, 5A, 6A, and 7A can be installed close to each other, the present invention can also be applied to a test article mounting vehicle body for a small vehicle.

  Although the first and second embodiments of the present invention have been described above, the present invention can be implemented in other forms. For example, in the first and second embodiments described above, when the first motion base 3 and each of the second motion bases 4 to 7 (4A to 7A) are in the neutral position, the test article mounting vehicle body 2 is determined in advance. The spacer 101 is interposed between the first motion base 3 and the test article mounting vehicle body 2 in order to maintain the reference position / posture. However, as described above, when all the motion bases are in the neutral position, the first motion base 3 and the test product mounting vehicle body are held so that the test product mounting vehicle body 2 is held at a predetermined reference position and posture. A spacer may be interposed between the second motion bases 4 to 7 (4A to 7A) and the corresponding wheels 21 to 24.

  Further, when the test article mounting vehicle body 2 is at the reference position / posture, the supported point on the vehicle body side to be supported by the first motion base 3 should be supported by the second motion bases 4 to 7. A spacer between the first motion base 3 and the test article mounting vehicle body 2 is used to hold the test article mounting vehicle body 2 at a predetermined reference position / posture when the vehicle body side is lower than the supported point on the vehicle body side. A spacer may be interposed between the second motion bases 4 to 7 (4A to 7A) and the corresponding axles 21S to 24S. Even in this case, a spacer is interposed between the second motion bases 4 to 7 (4A to 7A) and the corresponding wheels 21 to 24, and between the first motion base 3 and the test article mounting vehicle body 2. A spacer may be interposed.

  In the first and second embodiments described above, the wheels 21, 22, 23, and 24 are mounted on the axles 21S, 22S, 23S, and 24S. However, the wheel 21S, 22S, 23S, 24S is not mounted with the wheels 21, 22, 23, 24, and 4 for applying rotational force to the outer end of each axle 21S, 22S, 23S, 24S. You may connect the output shaft of two electric motors (henceforth "the motor for external force addition"). Each external force adding motor individually applies to the corresponding axles 21S, 22S, 23S, 24S a rotational force similar to the rotational force (external force) applied to each axle from the outside when the actual vehicle is traveling. Is for. In this case, the external force application motors connected to the axles 21S, 22S, 23S, 24S are supported by the corresponding second motion bases 4, 5, 6, 7 (4A, 5A, 6A, 7A). . In other words, the outer ends of the axles 21S, 22S, 23S, and 24S are supported by the corresponding second motion bases 4, 5, 6, and 7 (4A, 5A, 6A, and 7A) via the external force application motors, respectively. Is done.

  The present invention can be modified in various ways within the scope of the matters described in the claims.

  DESCRIPTION OF SYMBOLS 1,1A ... Test equipment for vehicles, 2 ... Body for test article mounting, 3 ... 1st motion base, 4-7 ... 2nd motion base, 11 ... Fixed base, 12 ... Movable base, 13 ... Actuator, 21-24 ... wheels, 21S to 24S ... axles, 101, 102 ... spacers

Claims (3)

A vehicle body for mounting a test product on which four axles corresponding to the four wheels of the left front wheel, the right front wheel, the left rear wheel and the right rear wheel are mounted;
A first motion base for supporting the test article mounting body and causing the test article mounting body to move in six degrees of freedom;
Four second motion bases for supporting the axles and causing the axles to move in six degrees of freedom;
Each of the motion bases is set such that the height position of the first motion base and the height position of each second motion base are equal when the first motion base and each second motion base are in a neutral position. Is installed,
A vehicle testing apparatus, wherein a spacer is interposed between the first motion base and the test article mounting body and / or between each second motion base and each corresponding axle. The vertical length of the second motion base when each second motion base is in the neutral position is shorter than the vertical length of the first motion base when the first motion base is in the neutral position. ,
The vehicle test apparatus according to claim 1, wherein a spacer is interposed between each of the second motion bases and an installation surface thereof. Each motion base is
A fixed base;
A movable base disposed above the fixed base;
The vehicle test apparatus according to claim 1, further comprising an actuator that is connected between the fixed base and the movable base and causes the movable base to move with six degrees of freedom.

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