JP2005233909A - Testing device for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a testing device for an automobile capable of simulating a phenomenon near to an actual traveling condition. <P>SOLUTION: This testing device for the automobile 1 is an automobile testing device for testing the performance of the automobile as a testing object X. The testing device for the automobile 1 is constituted to include a load applying means 3 having a rotary part 31, and for rotating the rotary part 31 to impart a rotational load to wheels of the testing object X arranged on the rotary part 31, and an vibration means 2 having a vibration generating part 21 for generating vibration, and for transmitting the vibration of the vibration generating part 21 to the testing object X via the rotary part 31. The testing device for the automobile 1 transmits the input vibration while imparting the rotational load to the wheels of the testing object X. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an automobile test apparatus, and more particularly to an automobile test apparatus capable of simulating a phenomenon closer to an actual running state.

  The techniques described in Patent Documents 1 and 2 are known for conventional automobile test apparatuses. The automobile test apparatus described in Patent Document 1 is a four-axis vibration apparatus, and can perform performance evaluation of an automobile by exciting the automobile being tested and performing vibration analysis. Moreover, the automobile test apparatus described in Patent Document 2 is a chassis dynamo test apparatus, and can perform performance evaluation of an automobile by applying a load to the wheels of the automobile and performing output analysis.

  However, since the test apparatus for automobiles of Patent Document 1 performs the test without rotating the wheels, there is a problem that the influence of the load due to the running torque cannot be simulated. In addition, the automobile test apparatus of Patent Document 2 has a problem that it cannot simulate the effects of squeaks and the like because it cannot impart vertical vibrations to the wheels. For this reason, the conventional test apparatus for automobiles has a problem that a phenomenon closer to the actual running state cannot be simulated and an accurate test result cannot be obtained.

No. 6-4315 JP-A-6-3225

  Therefore, the present invention has been made in view of the above, and an object of the present invention is to provide an automobile test apparatus that can simulate a phenomenon closer to an actual running state.

  In order to achieve the above object, an automotive test apparatus according to the present invention is an automotive test apparatus that performs a performance test using a vehicle as a test object. The automotive test apparatus includes a rotating unit and rotates the rotating unit on the rotating unit. Excitation for transmitting the vibration of the vibration generator to the test object via the rotating part, including a load applying means for applying a rotational load to the arranged test target wheel and a vibration generating part for generating vibration. And an input vibration is transmitted while applying a rotational load to the wheel to be tested.

  In the present invention, the vibration analysis is performed by transmitting the input vibration while applying the rotational load to the wheel of the test object (automobile), so that there is an advantage that the test result simulating the phenomenon closer to the actual running state can be obtained.

  In the automobile testing apparatus according to the present invention, the rotating portion is provided independently for each wheel to be tested.

  In the present invention, since the rotating part is provided separately and independently for each wheel to be tested, a rotational load can be applied independently and independently to the axle to be tested. Thereby, there is an advantage that various running states of the test object can be simulated.

  In the automobile test apparatus according to the present invention, the vibration generating means is provided independently for each axle to be tested.

  In the present invention, since the vibration generating means is provided separately and independently for each axle to be tested, vibration can be applied to the axle to be tested separately and independently. Accordingly, there is an advantage that various vibrations can be input to the test object.

  In the automotive test apparatus according to the present invention, the rotating portion has a belt-type structure and a support portion that supports the wheel to be tested, so that the contact surface with the wheel is configured to be flat. .

  In this invention, since the contact surface with a wheel is comprised flat, there exists an advantage which can simulate the phenomenon close | similar to an actual driving | running state by ensuring the flatness of a driving | running | working surface.

  Further, in the automobile test apparatus according to the present invention, the rotational speeds of the front and rear wheels or the left and right wheels to be tested are connected to each other by an intermediate gear, so that the rotation speed is synchronized.

  In this invention, since the rotation speed of the rotation part concerning the front and rear wheels or the left and right wheels to be tested is synchronized, variation in the rotation speed for each wheel is suppressed. This has the advantage of obtaining accurate test results.

  Further, in the automobile test apparatus according to the present invention, the rotating portions applied to the front and rear wheels or the left and right wheels to be tested are driven with different torques by being connected via a differential gear.

  In the present invention, the rotating parts applied to the front and rear wheels or the left and right wheels to be tested are driven with different torques. For example, the difference between the inner and outer wheels during cornering, and the difference between the front and rear wheels in a four-wheel drive vehicle. There is an advantage that various running states of the test object can be simulated by inputting a rotational load in consideration of the above to the test object.

  In the automobile testing apparatus according to the present invention, the rotating unit has a single belt structure in which all the test target wheels can be arranged.

  In this invention, since the rotating part has a single belt-type structure in which all the wheels to be tested can be arranged, there is an advantage that the rotational speeds of the wheels can be reliably synchronized.

  Moreover, the test apparatus for automobiles according to the present invention has an inclination means for applying a lateral load or a longitudinal load to the test object by inclining the test object.

  In the present invention, since a lateral load or a longitudinal load is applied to the test object by inclining the test object, there is an advantage that, for example, a running state during cornering or climbing can be simulated.

  In addition, the automobile test apparatus according to the present invention includes a traction means for applying a lateral load or a longitudinal load to the test object by pulling the test object.

  By pulling the test object, a lateral load or a longitudinal load is applied to the test object, so that there is an advantage that, for example, the running state during cornering or climbing can be simulated.

  According to the present invention, the input vibration is transmitted and the vibration analysis is performed while applying a rotational load to the wheel of the test object (automobile), so that there is an advantage that a test result simulating a phenomenon closer to the actual running state can be obtained. .

  Hereinafter, the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. In addition, constituent elements of the embodiments described below include those that can be easily replaced by those skilled in the art or those that are substantially the same.

  FIG. 1 and FIG. 2 are a side view (FIG. 1) and a plan view (FIG. 2) showing an automobile test apparatus according to Embodiment 1 of the present invention. FIG. 3 is a diagram showing a driving unit of the load means shown in FIG. The automobile test apparatus 1 includes a vibration means 2 and a load means 3. This vehicle test apparatus 1 is characterized in that vibration analysis is performed by inputting vibration by the vibration means 2 while applying rotation to the wheel by the load means 3 for the vehicle X to be tested. . As a result, a phenomenon closer to the actual running state can be simulated, and there is an advantage that a more accurate test result can be obtained.

  The vibration means 2 is a multi-axis tester (a so-called four poster tester) having four axes, and inputs vibrations to the wheels (axle) of the automobile X. The vibration means 2 includes a vibration generating unit 21 and a table 22. The vibration generating unit 21 is an actuator that generates vibration by driving, and is configured as a set of four corresponding to the number of axles of the automobile X. The table 22 is installed on each of the four vibration generators 21 and serves as a support base that supports the wheels of the automobile X. The vibration means 2 is connected to a control system (not shown), and the drive is controlled by this control unit.

  The loading means 3 is a chassis dynamo testing machine and inputs a rotational load to the wheels of the automobile X. This loading means 3 is comprised including the rotation part 31 and the drive part 32 (refer FIG. 1 and FIG. 3).

  The rotating unit 31 includes a roller 311, a belt 312, and a support unit 313, and is installed on each of the four axes (table 22) of the vibration means 2. In the rotating unit 31, two rollers 311 are formed as a set, and a belt 312 is stretched between these rollers 311. A support portion 313 is disposed on the back side of the belt 312, and the rotating portion 31 supports the weight of the automobile X by the support portion 313. Here, the support portion 313 is disposed so as to be located on the excitation shaft of the excitation means 2. Thereby, the vibration input of the vibration excitation means 2 is reliably transmitted with respect to the motor vehicle X at the time of a performance test. The rotating unit 31 is provided with a tension holding unit (not shown), and the tension holding unit holds the tension of the belt 312 constant, so that the frictional force between the wheel and the belt 312 is appropriately adjusted. Maintained.

  The drive unit 32 includes an electric motor 321 and an intermediate gear 322. The electric motor 321 is connected to each roller 311 of the rotating unit 31 via a plurality of intermediate gears 322 (see FIG. 2). These intermediate gears 322 respectively connect the rotating portions 31 that are applied to the front and rear wheels (FR-RR and FL-RL) and the left and right wheels (FR, RR-FL, RL) of the automobile X. Thereby, the rotation speed of the rotation part 31 of front and rear, right and left is synchronized. The drive unit 32 is connected to a control system (not shown), and the drive is controlled by the control unit. In the drive unit 32, when the electric motor 321 is driven, the power is transmitted to the roller 311 via the intermediate gear 322, and the roller 311 is rotationally driven.

  In this automobile testing apparatus 1, the automobile X to be tested is placed on the table 22 of the vibration means 2 and is installed with four wheels on the belt 312 (support 313) of the load means 3. The Further, the automobile X is constrained on the four sides by the wires 4 and is fixed so that the position of the wheel does not deviate from the load applying means 3. In the performance test, first, the loading means 3 is driven, the belt 312 is sent, and a rotational load is applied to the wheel of the automobile X. This rotational load simulates the state in which the automobile X is running at an acceleration / deceleration. Further, the vibration generating unit 21 is driven to vibrate the vibration generating unit 21, and this vibration is transmitted as input vibration to the wheel of the rotating automobile X via the rotating unit 31. This input vibration simulates the state where the automobile X is traveling on a rough road. And the output vibration of the automobile X with respect to the input vibration is detected via a detection system (not shown) provided on the axle of the automobile X. Thereby, analysis of vibration characteristics, evaluation of riding comfort by transmission vibration, and the like are performed. It is also possible to measure the output of the automobile X in a rough road running state (vibration state) by changing the input rotational load.

  According to this vehicle testing apparatus 1, as described above, the vibration test is performed while applying a rotational load to the wheel of the vehicle X, and therefore vibration analysis can be performed while taking into consideration the influence of the load caused by the running torque. Moreover, according to this vehicle testing apparatus 1, the output of the vehicle X based on the rotational load can be measured while applying vertical vibrations to the wheels of the vehicle X, so that the influence of squeaks or the like can be reflected in the test results. As a result, a phenomenon closer to the actual running state can be simulated, and there is an advantage that more accurate test results can be obtained.

  The automobile test apparatus 1 may further include an inclination means (not shown) for inclining the automobile X in the left-right direction or the front-rear direction with respect to the traveling direction of the automobile X. Such tilting means may be, for example, a vertical slide mechanism that changes the height of the table 22 or the rotating unit 31, or a rotating mechanism that changes the tilt angle of the table 22 or the rotating unit 31. good. Then, the vehicle X is tilted using such a tilting means, and the performance test is performed in this state, so that it is possible to simulate the running state of the vehicle X during cornering, climbing, starting, or braking. .

  In the automobile testing apparatus 1 of the first embodiment, the vibration means 2 has four vibration generators 21, a table 22 for each vibration generator 21, and a load means 3 in each table 22. Each is installed (see FIG. 1). Such a configuration is preferable in that various vibrations can be input to the automobile X because vibrations can be input independently to the four wheels of the automobile X. However, the present invention is not limited to this, and the automotive test apparatus 1 may be configured as follows.

  FIG. 4 is an explanatory view showing an automobile test apparatus 1 according to Embodiment 2 of the present invention. In the figure, the same reference numerals are given to the same components as those in the automobile testing apparatus 1 of the first embodiment, and the description thereof is omitted.

  In this automobile testing apparatus 1, the vibration means 2 has only a single table 22, and the bottom of the table 22 is supported by four vibration generators 21. Further, the loading means 3 has only a single rotating part 31, and this rotating part 31 is arranged over the front and rear width of the table 22. Specifically, the belt 312 of the rotating unit 31 has a single structure, and the belt 312 is supported by a pair of front and rear rollers 311 and 311 to rotate. The automobile X is disposed on the rotating portion 31 (belt 312) with front, rear, left and right wheels. In such a configuration, the rotational load by the load applying means is applied to the wheels of the automobile X via the single belt 312. Therefore, since the rotational speeds of the front, rear, left and right wheels are synchronized, there is an advantage that variations in the rotational speeds of the wheels are suppressed and accurate test results can be obtained.

  In the vehicle testing apparatus 1 of the first embodiment, the rotating portion 31 of the load applying means 3 has a belt-type structure and a structure in which the wheel contact surface is supported by the support portion 313 (see FIG. 1). Such a configuration is preferable in that the contact surface of the rotating portion 31 with respect to the wheel becomes flat, and thus a phenomenon closer to the actual running state can be simulated with respect to the ground contact pressure of the wheel. However, the present invention is not limited to this, and the rotating unit 31 of the loading means 3 may be configured as follows.

  FIG. 5 is an explanatory view showing an automobile test apparatus 1 according to Embodiment 3 of the present invention. In the figure, the same reference numerals are given to the same components as those in the automobile testing apparatus 1 of the first embodiment, and the description thereof is omitted.

  In this automobile testing apparatus 1, the rotating portion 31 of the load applying means 3 has a structure without the belt 312. In such a configuration, the rotational load is directly applied from the roller 311 of the rotating unit 31 to the wheel of the automobile X. In such a configuration, since the wheels are directly supported by the rollers 311, there is an advantage that the support portion 313 of the rotating portion 31 can be omitted. Further, since the rotating part 31 does not have the belt 312, there is an advantage that the tension maintaining means of the belt 312 can be omitted. Thereby, the structure of the rotation part 31 is simplified.

  In the vehicle testing apparatus 1 of the first embodiment, the roller 311 of the load applying means 3 is mechanically connected via the intermediate gear 322, and the rotational speeds of all the rollers 311 are configured to be synchronized. Such a configuration is preferable in that accurate test results can be obtained because variations in the number of revolutions of each wheel are suppressed as compared with the case where each roller 311 is individually driven by the electric motor 321. However, the present invention is not limited to this, and the drive unit 32 of the loading means 3 may be configured as follows.

  FIG. 6 is an explanatory view showing an automobile test apparatus 1 according to Embodiment 4 of the present invention. In the figure, the same reference numerals are given to the same components as those in the automobile testing apparatus 1 of the first embodiment, and the description thereof is omitted.

  In this automobile test apparatus 1, the drive unit 32 has a differential gear 323, and the front, rear, left and right rotating units 31 are connected via the differential gear 323. That is, in this automobile testing apparatus 1, the rotating part 31 applied to the front and rear wheels (FR-RR and FL-RL) and the left and right wheels (FR, RR-FL, RL) of the automobile X is a differential in the middle. The gears 323 are connected to each other. An electric motor 321 is connected to the differential gear 323.

  In such a configuration, since each rotating unit 31 is connected via the differential gear 323, the power of the electric motor 321 can be transmitted to the front, rear, left and right wheels of the vehicle X with different torques. For example, a rotational load that takes into account the differential between the inner and outer wheels during cornering and the differential between the front and rear wheels in a four-wheel drive vehicle can be input to the vehicle X, which has the advantage of simulating various driving conditions of the vehicle. .

  FIG. 7 is an explanatory view showing an automobile testing apparatus 1 according to Embodiment 5 of the present invention. In the figure, the same reference numerals are given to the same components as those in the automobile testing apparatus 1 of the first embodiment, and the description thereof is omitted.

  In the automobile testing apparatus 1, a traction means 5 is provided on a wire 4 that restrains the automobile X. The traction means 5 is constituted by a hydraulic vibration generator and is provided for each of the four wires 4. Then, a lateral load or a longitudinal load can be applied to the automobile X by towing the automobile X in the left-right direction or the front-rear direction by these towing means 5. And by performing a performance test in a state where such a load is applied, there is an advantage that the running state of the automobile X during cornering or climbing can be simulated.

  FIG. 8 is a diagram showing a modification of the automobile test apparatus shown in FIG. In the automobile test apparatus 1 shown in FIG. 7, the traction means 5 is constituted by a hydraulic vibration generator, and a lateral load or a longitudinal load is applied to the automobile X by pulling the wire 4 by the hydraulic vibration generator. However, the present invention is not limited to this, and the pulling means 5 may be configured by a slide mechanism, and the wire 4 may be pulled by the slide mechanism (see FIG. 8). This configuration also has an advantage that a lateral load or a longitudinal load can be applied to the automobile X.

  As described above, the automobile test apparatus according to the present invention is useful in that it can simulate a phenomenon closer to the actual running state.

It is a side view which shows the testing apparatus for motor vehicles concerning Example 1 of this invention. It is a top view which shows the testing apparatus for motor vehicles concerning Example 1 of this invention. It is a figure which shows the drive part of the load means described in FIG. It is explanatory drawing which shows the testing apparatus 1 for motor vehicles concerning Example 2 of this invention. It is explanatory drawing which shows the test apparatus 1 for vehicles concerning Example 3 of this invention. It is explanatory drawing which shows the test apparatus 1 for motor vehicles concerning Example 4 of this invention. It is explanatory drawing which shows the test apparatus 1 for vehicles concerning Example 5 of this invention. It is a figure which shows the modification of the test device for motor vehicles described in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Test apparatus for motor vehicles 2 Excitation means 3 Excitation means 4 Wire 5 Pulling means 21 Vibration generating part 22 Table 31 Rotation part 32 Drive part 311 Roller 312 Belt 313 Support part 321 Electric motor 322 Intermediate gear 323 Differential gear X Automobile

Claims (9)

In automotive testing equipment that performs performance tests on automobiles,
A loading unit that has a rotating unit and rotates the rotating unit to apply a rotational load to the test target wheel disposed on the rotating unit;
Including a vibration generating unit that generates vibration, and vibration means for transmitting the vibration of the vibration generating unit to a test object via the rotating unit, and
A test apparatus for an automobile which transmits input vibration while applying a rotational load to a wheel to be tested.   The automobile testing apparatus according to claim 1, wherein the rotating unit is provided independently for each wheel to be tested.   The automobile test apparatus according to claim 1, wherein the vibration generating means is provided separately and independently for each axle to be tested.   The contact part with the said wheel is comprised flat by the said rotation part having a support part which supports the wheel of a test object while having a belt-type structure, The any one of Claims 1-3. Car testing equipment.   The automotive test apparatus according to any one of claims 1 to 4, wherein the rotational speeds of the front and rear wheels or the left and right wheels to be tested are connected to each other by an intermediate gear to synchronize the rotational speeds. .   The test apparatus for automobile according to any one of claims 1 to 4, wherein the rotating parts applied to the front and rear wheels or the left and right wheels to be tested are driven with different torques by being connected via a differential gear. .   The automobile test apparatus according to claim 1, wherein the rotating unit has a single belt-type structure in which all wheels to be tested can be arranged.   The automobile test apparatus according to any one of claims 1 to 7, further comprising an inclination means for applying a lateral load or a longitudinal load to the test object by inclining the test object.   The automobile test apparatus according to claim 1, further comprising traction means for applying a lateral load or a longitudinal load to the test object by pulling the test object.

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