JP4487855B2 - Exciting device and vehicle abnormal noise inspection method - Google Patents

Description

  The present invention relates to a vibration exciter that applies vibration to a vehicle, and a vehicle abnormal sound inspection method that determines whether or not abnormal noise has occurred in a vehicle.

DESCRIPTION OF RELATED ART Conventionally, the vibration apparatus of patent document 1 and patent document 2 is known as an example of the vibration apparatus for performing a vibration of a vehicle, a noise test, etc.
Each of the vibration devices described in Patent Literature 1 and Patent Literature 2 includes a front drum on which a front wheel of a vehicle is placed and a rear drum on which a rear wheel of the vehicle is placed. The vehicle is subjected to vibration and noise tests by rotating the wheels of the vehicle by rotationally driving the rear drum.
In addition, a vehicle abnormal sound inspection device that determines the presence or absence of abnormal sound generated by a vehicle that has been vibrated by a vibration exciter, and a vehicle abnormal sound inspection system that combines a plurality of such vehicle abnormal sound inspection devices are also being studied.
Japanese Utility Model Publication No. 2-115146 Japanese Utility Model Publication No. 2-135842

However, no specific vehicle abnormal noise inspection device or vehicle abnormal noise inspection system has been proposed in the past that is applied to a mass production line. This is because when a conventional vibration device or the like is used, it takes a long time to inspect one vehicle and it is difficult to apply it to a mass production line.
For example, the vibration device described in Patent Literature 1 and Patent Literature 2 is configured such that the front wheel of the vehicle is placed on the front drum and the rear wheel of the vehicle is placed on the rear drum. It is necessary to separately support the vehicle at a predetermined position with a wire or the like so that the vehicle does not move in the front-rear direction when these drums are driven to rotate.
For this reason, the vibration devices described in Patent Document 1 and Patent Document 2 require a complicated and time-consuming work for supporting the vehicle at a predetermined position of the vibration device. It was difficult to apply to.

Of the noise generated by a vehicle that has been vibrated by a vibration device, vibration noise (abnormal noise) originating from various interior parts in the vehicle interior is generally high in frequency and other noise (road noise, etc.) The intensity (volume) is small compared to). Therefore, in order to detect the vibration sound (abnormal sound) separately from other noises and specify the position of the generation source, it is necessary to perform various processes on the information related to the detected sound.
For this reason, the time required for the calculation related to the processing is long, which is also one of the reasons that it is difficult to apply to the mass production line.

  In view of the situation as described above, the present invention is excellent in workability (is easy to work and can be speeded up), and can be applied to a mass production line. Is to provide.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

That is, in claim 1,
The outer peripheral surface provided with the protrusion supports the wheel with a first drum that contacts the lower front portion of the vehicle wheel and the outer peripheral surface provided with the protrusion supports the wheel with a second drum that contacts the lower rear portion of the vehicle wheel. A support driving device that rotates and a side support device that supports the outer surface of the wheel of the vehicle, and the protrusions provided on the outer peripheral surface of the first drum and the outer peripheral surface of the second drum are The side support device abuts against the outer surface of the wheel and rotates integrally with the wheel , having a different shape, size, and arrangement for each of a plurality of contact regions divided in the axial direction of the drum. An intermediate support portion that supports the corresponding contact portion so as to be relatively rotatable and movable within a predetermined movable range in a direction substantially perpendicular to the axial direction of the wheel, and the corresponding contact portion via the intermediate support portion. The part is urged toward the outer surface of the wheel and moved in the axial direction. The urging part to be controlled, the urging part is supported, the corresponding contact part is moved in the axial direction of the wheel, and the wheel of the vehicle, the outer peripheral surface of the first drum, and the outer peripheral surface of the second drum A base for changing the contact position .

According to a second aspect of the present invention, the frequency of vibration applied to the vehicle is adjusted to 5 Hz or more and 100 Hz or less by adjusting the rotational speeds of the first drum and the second drum .

In claim 3,
It is disposed between the first drum and the second drum, and includes an advancing and retracting member that moves in the vertical direction .

In claim 4,
It comprises a regulating member that abuts against the rear part or front part of the wheel and regulates the movement of the wheel in the front-rear direction .

In claim 5,
A sound insulating member that covers the periphery of the vehicle and blocks external noise is provided .

In claim 6,
The outer peripheral surface provided with the protrusion supports the wheel with a first drum that contacts the lower front portion of the vehicle wheel and the outer peripheral surface provided with the protrusion supports the wheel with a second drum that contacts the lower rear portion of the vehicle wheel. A support driving device that rotates and a side support device that supports the outer surface of the wheel of the vehicle, and the protrusions provided on the outer peripheral surface of the first drum and the outer peripheral surface of the second drum are The side support device abuts against the outer surface of the wheel and rotates integrally with the wheel, having a different shape, size, and arrangement for each of a plurality of contact regions divided in the axial direction of the drum. An intermediate support portion that supports the corresponding contact portion so as to be relatively rotatable and movable within a predetermined movable range in a direction substantially perpendicular to the axial direction of the wheel, and the corresponding contact portion via the intermediate support portion. The part is urged toward the outer surface of the wheel and moved in the axial direction. The urging part to be controlled, the urging part is supported, the corresponding contact part is moved in the axial direction of the wheel, and the wheel of the vehicle, the outer peripheral surface of the first drum, and the outer peripheral surface of the second drum And a base that changes a contact position, and the lateral support device uses a vibration device that moves the vehicle laterally .

In claim 7,
The frequency of vibration applied to the vehicle is adjusted to 5 Hz or more and 100 Hz or less by adjusting the rotation speeds of the first drum and the second drum .

In claim 8,
It is disposed between the first drum and the second drum, and includes an advancing and retracting member that moves in the vertical direction .

In claim 9,
It comprises a regulating member that abuts against the rear part or front part of the wheel and regulates the movement of the wheel in the front-rear direction .

In claim 10,
A sound insulating member that covers the periphery of the vehicle and blocks external noise is provided .

  As effects of the present invention, the following effects can be obtained.

In Claim 1, the operation | work which applies a vibration to a vehicle is easy and the said operation | work speed-up is possible.
Further, it is possible to apply vibrations of a plurality of conditions to the vehicle without exchanging the first drum and the second drum.
Furthermore, the work of applying vibration to the vehicle is easy, the speed of the work can be increased, and the vehicle can be supported from the side without obstructing the vibration of the wheels of the vehicle.

According to the second aspect of the present invention, it is possible to efficiently generate the abnormal noise that is generated from the interior parts of the vehicle.

According to the third aspect of the present invention, it is possible to easily set and retract the vehicle from the vibration device.

According to the fourth aspect of the present invention, it is possible to prevent the vehicle from jumping forward or backward when vibration is applied to the vehicle.

According to the fifth aspect of the present invention, external noise that is a disturbance element is cut off, which contributes to improvement in the detection accuracy of abnormal noise.

In Claim 6, the operation | work which applies a vibration to a vehicle is easy, and the said operation | work speed-up is possible.
Further, it is possible to apply vibrations of a plurality of conditions to the vehicle without exchanging the first drum and the second drum.
Furthermore, the work of applying vibration to the vehicle is easy, the speed of the work can be increased, and the vehicle can be supported from the side without obstructing the vibration of the wheels of the vehicle.

According to the seventh aspect of the present invention, it is possible to efficiently generate the abnormal noise that is generated from the interior parts of the vehicle.

According to the eighth aspect of the present invention, it is possible to easily set and retract the vehicle from the vibration device.

In the ninth aspect, it is possible to prevent the vehicle from jumping forward or backward when vibration is applied to the vehicle.

According to the tenth aspect of the present invention, external noise serving as a disturbance element is blocked, and this contributes to improvement in the detection accuracy of abnormal noise.

  Below, the outline | summary of the vibration apparatus 1 which is one Embodiment of the vibration apparatus based on this invention is demonstrated using FIG.1, FIG.2, FIG.3 and FIG.

The vibration device 1 is a device for applying vibration to the vehicle 11.
As shown in FIG. 1 and FIG. 2, the vibration device 1 mainly includes front wheel support drive devices 2L and 2R, rear wheel support drive devices 3L and 3R, side support devices 4, 4, 4, and 4, and forward and backward members 5 and 5. 5 and 5, regulation rollers 6 and 6, shelter 7 and the like.
Here, the “vehicle” in the present application widely refers to a vehicle that carries a cargo passenger (person, luggage), and is not limited to a passenger vehicle as in the present embodiment.
In the following description, for the sake of convenience, the direction of the arrow A shown in FIG. 1 and FIG. In the present embodiment, the “front” of the vibration device 1 substantially coincides with the front of the vehicle 11 when vibration is applied by the vibration device 1.

Hereinafter, the front wheel support driving devices 2L and 2R will be described.
The front wheel support drive devices 2L and 2R are one embodiment of the support drive device according to the present invention, and support and rotate the left front wheel 12L and the right front wheel 12R of the vehicle 11, respectively.
In the present embodiment, since the front wheel support drive device 2L and the front wheel support drive device 2R have substantially the same configuration, the description of the front wheel support drive device 2R will be omitted below.
The front wheel support drive device 2L includes a first drum 21, a second drum 22, a drive motor 23, and the like.

As shown in FIG. 1, FIG. 2 and FIG. 3, the first drum 21 is a substantially cylindrical member, and on its outer peripheral surface, there are projections 21a, 21a..., Projections 21b, 21b. ... are provided. The outer peripheral surface of the first drum 21 comes into contact with the lower half and the front half of the lower front portion of the front wheel 12L on the left side of the vehicle 11, that is, the contact surface with the road surface of the front wheel 12L.
The second drum 22 is a substantially cylindrical member, and is provided with projections 22a, 22a,..., Projections 22b, 22b,. The outer peripheral surface of the second drum 22 is in contact with the lower half of the front wheel 12L on the left side of the vehicle 11, that is, the lower half and the rear half of the contact surface with the road surface of the front wheel 12L.

  The first drum 21 and the second drum 22 are pivotally supported by the structure 24. The structure 24 is disposed in the underfloor space 16 formed between the floor board 15 and the ground, and is fixed to the ground. A hole 15 a is provided in a portion of the floor plate 15 corresponding to the first drum 21 and the second drum 22 in plan view. The axial direction of the first drum 21 and the axial direction of the second drum 22 are substantially parallel, and the upper end of the outer peripheral surface of the first drum 21, the upper end of the outer peripheral surface of the second drum 22, and the upper surface of the floor plate 15 are It becomes almost the same height.

The drive motor 23 rotationally drives the first drum 21 via a drive force transmission mechanism such as a sprocket or a chain, and is fixed to the structure 24. When the first drum 21 is rotationally driven, the front wheel 12L that is in contact with the outer peripheral surface of the first drum 21 is also rotationally driven. At this time, the front wheel 12L is provided on the outer peripheral surface of the protrusion 21a, 21a,..., The protrusions 21b, 21b, and the protrusions 21c, 21c,. The protrusions 22a, 22a,..., And the protrusions 22b, 22b,... And the protrusions 22c, 22c,.
In the present embodiment, the drive motor 23 is configured to rotationally drive the first drum 21. However, both the first drum 21 and the second drum 22 are rotationally driven even when the second drum 22 is rotationally driven. It is good also as a structure.

2 and 3, projections 21a, 21a,..., Projections 21b, 21b, and projections 21c, 21c,... Provided on the outer peripheral surface of the first drum 21 of the front wheel support drive device 2L will be described below. .., And the detailed configurations of the protrusions 22a, 22a..., The protrusions 22b, 22b... And the protrusions 22c, 22c.
In the present embodiment, the shapes of the first drum 21 and the second drum 22 are substantially the same, and therefore the detailed configuration of the second drum 22 is not described.

As shown in FIG. 3, the outer peripheral surface of the first drum 21 of the front wheel support drive device 2L is the axial direction of the first drum 21 (the direction of the arrow B in FIG. 3; in this embodiment, the left-right direction of the vibration device 1) Three contact areas 21L, 21M, and 21R are formed.
The contact area 21 </ b> L is an area closer to the left end portion of the contact area formed on the outer peripheral surface of the first drum 21. The contact area 21 </ b> R is an area closer to the right end portion among the contact areas formed on the outer peripheral surface of the first drum 21. The contact region 21M is a region sandwiched between the contact region 21L and the contact region 21R among the contact regions formed on the outer peripheral surface of the first drum 21.
The widths in the axial direction of the first drum 21 in the contact regions 21L, 21M, and 21R are all greater than the width of the front wheel 12L that contacts the first drum 21. Therefore, the front wheel 12L can maintain a state of contacting only one of the contact regions 21L, 21M, and 21R.
In this embodiment, the contact region 21L is provided with protrusions 22a, 22a,..., The contact region 21M is provided with protrusions 21b, 21b. 21c ... are provided.
Further, the shape, size, and arrangement of the protrusions 21a, 21b, and 21c (the number of protrusions provided in the contact area and the relative positional relationship between the protrusions provided in the same contact area) are different. Accordingly, when the front wheel 12L is rotationally driven in a state of being in contact with any one of the contact region 21L, the contact region 21M, and the contact region 21R, the front wheel 12L, and hence the vehicle 11, have different sizes, directions, and frequencies. Vibration is applied.

In this embodiment, the shape, size, and arrangement of the protrusions 21a, 22a, 31a, and 32a provided in the contact areas 21L, 22L, 31L, and 32L are substantially the same.
Further, the shape, size and arrangement of the projections 21b, 22b, 31b and 32b provided in the contact areas 21M, 22M, 31M and 32M are substantially the same.
Furthermore, the shape, size, and arrangement of the protrusions 21c, 22c, 31c, and 32c provided in the contact regions 21R, 22R, 31R, and 32R are substantially the same.
With this configuration, it is possible to simultaneously apply vibrations reproducing a predetermined road surface (for example, a gravel road, a stone pavement, an asphalt pavement surface) to each wheel of the vehicle 11.
In this embodiment, three contact areas are formed on the outer peripheral surface of one drum. However, the number of the contact areas is not limited, and one or a plurality of contact areas can be formed.
When a plurality of contact areas are formed, vibrations of a plurality of conditions can be applied to the vehicle without performing an incidental operation such as replacing the drum, which contributes to speeding up the operation.

Moreover, the vibration frequency applied to the vehicle 11 by the vibration device 1 is adjusted to about 5 to 100 Hz by adjusting the rotational speed at the time of the rotational drive of the first drums 21 and 31, and is not properly attached or damaged. It is possible to resonate the interior part of the vehicle 11 having the above problem and generate an abnormal noise from the interior part.
The vibration having a frequency of about 5 Hz to 100 Hz is not so much applied to the vehicle 11 during normal driving, but is just an abnormal sound (a sound that is uncomfortable for a person inside the vehicle 11) generated by the interior parts of the vehicle 11. It corresponds to the frequency, and by appropriately selecting the frequency, it is possible to generate an abnormal noise of the interior part that is the target of the abnormal noise generation.
Therefore, it is possible to efficiently generate an abnormal noise generated from the interior parts of the vehicle 11 or the like.

Hereinafter, the rear wheel support driving devices 3L and 3R will be described.
The rear wheel support drive devices 3L and 3R are one embodiment of the support drive device according to the present invention, and support and rotate the left rear wheel 13L and the right rear wheel 13R of the vehicle 11, respectively.
In the present embodiment, the rear wheel support drive device 3L and the rear wheel support drive device 3R have substantially the same configuration, and thus the description of the rear wheel support drive device 3R will be omitted below.
The rear wheel support drive device 3L includes a first drum 31, a second drum 32, a drive motor 33, and the like.

As shown in FIG. 1, FIG. 2 and FIG. 3, the first drum 31 is a substantially cylindrical member, and on its outer peripheral surface, there are protrusions 31a, 31a,..., Protrusions 31b, 31b. ... are provided. The outer peripheral surface of the first drum 31 comes into contact with the lower half and the front half of the lower front portion of the rear wheel 13L of the vehicle 11, that is, the contact surface with the road surface of the rear wheel 13L.
The second drum 32 is a substantially cylindrical member, and is provided with protrusions 32a, 32a,..., Protrusions 32b, 32b,. The outer peripheral surface of the second drum 32 comes into contact with the lower half of the rear wheel 13L on the left side of the vehicle 11, that is, the lower half and the rear half of the contact surface with the road surface of the rear wheel 13L.

The first drum 31 and the second drum 32 are pivotally supported by the structure 34. The structure 34 is disposed in the underfloor space 16 formed between the floor board 15 and the ground.
In the floor plate 15, holes 15 b are provided in portions corresponding to the first drum 31 and the second drum 32 in plan view. The axial direction of the first drum 31 and the axial direction of the second drum 32 are substantially parallel, and the upper end of the outer peripheral surface of the first drum 31, the upper end of the outer peripheral surface of the second drum 32, and the upper surface of the floor plate 15 are It becomes almost the same height.

The drive motor 33 rotates the first drum 31 via a drive force transmission mechanism such as a sprocket or a chain, and is fixed to the structure 34. When the first drum 31 is rotationally driven, the rear wheel 13L that is in contact with the outer peripheral surface of the first drum 31 is also rotationally driven. At this time, the rear wheel 13 </ b> L is formed on the protrusion 31 a, 31 a..., The protrusion 31 b, 31 b, and the protrusion 31 c, 31 c. The projections 32a, 32a,..., 32b, 32b,... And the projections 32c, 32c,.
In this embodiment, the drive motor 33 is configured to rotationally drive the first drum 31. However, both the first drum 31 and the second drum 32 are rotationally driven even when the second drum 32 is rotationally driven. It is good also as a structure.

Similarly, the structure 34 is disposed in the underfloor space 16 and is slidably mounted on a rail 35a provided on the upper surface of the structure 35 fixed to the ground. The vibration exciter 1 can move the structure 34 in the front-rear direction of the vehicle 11 with respect to the structure 35 by operating an actuator (such as a hydraulic cylinder) (not shown).
As described above, the vibration device 1 of the present embodiment is configured such that the rear wheel support drive device 3R is formed from the gap between the first drum 21 and the second drum 22 of the front wheel support drive device 2R (the position where the front wheel 12L of the vehicle 11 is supported). The distance to the gap between the first drum 31 and the second drum 32 (the position at which the rear wheel 13L of the vehicle 11 is supported) can be changed. Therefore, it is possible to apply vibration to a plurality of types of vehicles having different wheel bases.

  In the present embodiment, the first drum 21 and the second drum 22 of the front wheel support drive device 2L, the first drum 21 and the second drum 22 of the front wheel support drive device 2R, and the first drum 31 of the rear wheel support drive device 3L. Since the first drum 31 and the second drum 32 of the second drum 32 and the rear wheel support drive device 3R have substantially the same configuration, the detailed configuration of the first drum 31 and the second drum 32 of the rear wheel support drive device 3L. Will not be described.

Hereinafter, the side support devices 4, 4, 4, and 4 will be described with reference to FIGS. 1, 2, and 4.
The side support devices 4, 4, 4, 4 are one embodiment of the side support device according to the present invention, and are respectively the outer surfaces of the front wheel 12L, the front wheel 12R, the rear wheel 13L, and the rear wheel 13R of the vehicle 11, that is, A surface corresponding to the side surface of the vehicle 11 is supported.
In addition, since the basic structure of the side support devices 4, 4, 4, 4 of the present embodiment is substantially the same, only the side support device 4 that supports the outer surface of the front wheel 12L of the vehicle 11 will be described below. A detailed configuration will be described, and description of the other side support devices 4, 4, and 4 will be omitted.

  As shown in FIG. 4, the side support device 4 mainly includes a contact plate 41, an intermediate support unit 42, an air cylinder 43, a base frame 44, a hydraulic cylinder 45, and the like.

The contact plate 41 is an embodiment of the contact portion according to the present invention, and contacts the outer surface of the front wheel 12L and rotates integrally with the front wheel 12L.
The contact plate 41 is a circular plate material having a diameter slightly smaller than the diameter of the front wheel 12L, and corresponds to the peripheral portion of the surface opposite to the outer surface of the front wheel 12L, that is, the rubber tire portion excluding the wheel on the outer surface of the front wheel 12L. Pads 41a, 41a,...
The abutting plate 41 is urged (pressed) toward the outer surface of the front wheel 12L by an air cylinder 43, which will be described later, and the pads 41a, 41a, ... abut against the outer surface of the front wheel 12L. In the case of the present embodiment, it is constituted by a bundle of a plurality of flexible rubber tubes or a rubber molded product.
When the front wheel 12L is rotationally driven in a state where the contact plate 41 is biased toward the outer surface of the front wheel 12L, the contact plate 41 rotates integrally with the front wheel 12L.
In this embodiment, the shape of the contact plate 41 is a circular plate material. However, if the contact plate 41 is in contact with the outer surface of the wheel and can rotate integrally with the wheel, other shapes (for example, the tip of the tip as a star shape). It is also possible to provide a pad on the
Further, the configuration (shape and material) of the pad 41a is preferably a hollow rubber (rubber tube or the like) as in this embodiment from the viewpoint of preventing scratches on the rubber tire portion of the wheel, but the rubber tire of the front wheel 12L. Any other structure (for example, block-like rubber) may be used as long as the part is not damaged.
Further, since it is considered that heat is generated by minute dynamic friction between the outer surface of the wheel and the pad 41a due to vibration of the wheel, the material of the pad 41a is preferably excellent in heat resistance.

In this embodiment, the pads 41a, 41a,... Have a predetermined contact surface with respect to the outer surface of the front wheel 12L so that the contact surface becomes closer to the outer surface of the front wheel 12L as the distance from the rotational axis of the front wheel 12L increases. It is inclined by an angle θ.
With this configuration, it is possible to prevent the contact plate 41 from coming into contact with the wheel of the front wheel 12L and scratching the wheel.

The intermediate support unit 42 is an embodiment of the intermediate support portion according to the present invention, and is capable of relatively rotating the contact plate 41 and moving within a predetermined movable range in a direction substantially perpendicular to the axial direction of the front wheel 12L. It is something to support.
The intermediate support unit 42 includes a rotating shaft 42a, a thrust bearing 42b, a slide case 42c, a spring 42d, and the like.

  The rotating shaft 42a is an axis whose one end is fixed to the approximate center of the surface of the contact plate 41 opposite to the surface facing the front wheel 12L.

  The thrust bearing 42b is mainly composed of an inner ring, an outer ring, and a ball disposed therebetween, and the inner ring is rotatable relative to the outer ring. A hole is provided in the inner ring of the thrust bearing 42b, and the other end of the rotating shaft 42a is fitted into the hole.

The slide case 42c is a container that houses the thrust bearing 42b therein.
The slide case 42c is provided with a slide hole 42e, and the rotating shaft 42a protrudes from the slide hole 42e.
The shape of the space inside the slide case 42c is such that the thrust bearing 42b accommodated in the space cannot move in the axial direction of the front wheel 12L (the direction of the arrow B), but is substantially perpendicular to the axial direction of the front wheel 12L. It can be slidable in any direction, that is, in the front-rear direction or in the up-down direction of the vehicle 11 (for example, a shape in which a thrust bearing 42b, which is a member having a substantially cylindrical shape as an outer shape) is expanded in the diameter direction).

  The springs 42d, 42d,... Are elastic bodies having one end fixed to the outer ring of the thrust bearing 42b and the other end fixed to a predetermined position on the inner peripheral surface of the slide case 42c. It is supported at a predetermined position in the space inside the case 42c (usually, approximately the center of the space inside the slide case 42c).

  With this configuration, the intermediate support unit 42 can rotate the contact plate 41 relative to each other and has a predetermined movable range in a direction substantially perpendicular to the axial direction of the front wheel 12L (in the case of the present embodiment, the inside of the slide case 42c). Can be supported movably within a “predetermined movable range”.

The air cylinder 43 is an embodiment of the biasing portion according to the present invention, and biases the contact plate 41 toward the outer surface of the front wheel 12L via the intermediate support unit 42.
The tip of the cylinder rod of the air cylinder 43 is fixed to the slide case 42c.
The cylinder body of the air cylinder 43 is supported by the base frame 44 via the slide member 44b. An air supply pipe (not shown) is connected to the cylinder body of the air cylinder 43, and the air cylinder 43 expands and contracts by the compressed air supplied from the air supply pipe.
Therefore, the air cylinder 43 can urge the contact plate 41 and the intermediate support unit 42 with a predetermined force toward the outer surface of the front wheel 12L, and the front wheel 12L is rotated when the front wheel 12L is driven to rotate. It is possible to attenuate the vibration in the axial direction of 12L to some extent and restrict the movement of the front wheel 12L and consequently the vehicle 11 in the axial direction of the front wheel 12L.
In this embodiment, the air cylinder 43 is used as the urging portion, but an elastic body such as a spring may be used instead.

  The base frame 44 and the hydraulic cylinder 45 are an embodiment of the base according to the present invention, and move the contact plate 41 in the axial direction of the front wheel 12L.

  The base frame 44 includes a main frame 44a, a slide member 44b, a guide rail 44c, and the like.

The main frame 44a is a main structure of the base frame 44, and is provided with a slide member 44b.
The slide member 44b is a member for supporting the cylinder body of the air cylinder 43 on the main frame 44a so as to be slidable in the vertical direction. The cylinder body of the air cylinder 43 slides in the vertical direction while engaging with the slide member 44b by an actuator (not shown) such as a hydraulic cylinder. In this way, the base frame 44 adjusts the height at which the air cylinder 43 is supported, so that the contact plate 41 is adjusted according to the diameters of the wheels of the vehicle 11 (front wheel 12L, front wheel 12R, rear wheel 13L, rear wheel 13R). It is possible to adjust the height. Therefore, it is possible to deal with a plurality of types of vehicles having different wheel diameters with the same vibration exciter 1, and the workability is excellent.
The guide rail 44c is a member fixed to the floor surface 15, and the longitudinal direction thereof is a direction substantially parallel to the axial direction of the front wheel 12L.
The main frame 44a can move in a direction substantially parallel to the longitudinal direction of the guide rail 44c, that is, the axial direction of the front wheel 12L, while engaging with the guide rail 44c.

The tip of the cylinder rod of the hydraulic cylinder 45 is pivotally attached to the main frame 44 a, and the cylinder body of the hydraulic cylinder 45 is pivotally attached to a stay 46 fixed to the floor 15.
A hydraulic oil supply pipe (not shown) is connected to the cylinder body of the hydraulic cylinder 45, and the hydraulic cylinder 45 extends and contracts by the hydraulic oil supplied from the hydraulic oil supply pipe.
Accordingly, the base frame 44 and the hydraulic cylinder 45 can support the intermediate support unit 42 and move in a direction substantially parallel to the axial direction of the front wheel 12L.

  In this embodiment, the main frame 44a is moved in a direction substantially parallel to the axial direction of the front wheel 12L using the hydraulic cylinder 45. However, the main frame is replaced by another actuator such as a motor instead of the hydraulic cylinder 45. 44a may be configured to move in a direction substantially parallel to the axial direction of the front wheel 12L.

Further, the side support devices 4, 4, 4, 4 (1) contract the hydraulic cylinders 45, 45 of the side support devices 4, 4 that support the outer surfaces of the right front wheel 12R and the rear wheel 13R on the right side of the vehicle 11. The left and right front wheels 12L and 13L of the vehicle 11 are extended by extending the hydraulic cylinders 45 and 45 of the side support devices 4 and 4 that support the outer surfaces of the left and right front wheels 12L and 13L of the vehicle 11, respectively. Pushing the outer surface to move the vehicle 11 to the right side; and (2) hydraulic cylinders 45 and 45 of the side support devices 4 and 4 that support the outer surfaces of the front wheel 12R and the rear wheel 13R on the right side of the vehicle 11; The right front wheel 12R and the rear wheel 13R on the right side of the vehicle 11 are contracted by contracting the hydraulic cylinders 45 and 45 of the side support devices 4 and 4 that extend and support the outer surfaces of the left front wheel 12L and the rear wheel 13L of the vehicle 11. Outside Press to move the vehicle 11 on the left side, are possible.

Hereinafter, the advancing / retreating members 5, 5, 5, and 5 will be described with reference to FIG.
The advancing / retreating members 5, 5, 5 and 5 are one embodiment of the advancing / retreating member according to the present invention, and are respectively between the first drum 21 and the second drum 22 of the front wheel support drive device 2L and the first of the front wheel support drive device 2R. Between one drum 21 and the second drum 22, between the first drum 31 and the second drum 32 of the rear wheel support drive device 3L, and between the first drum 31 and the second drum 32 of the rear wheel support drive device 3L. It is a member which is arrange | positioned and moves to an up-down direction.

The advancing and retracting members 5 and 5 corresponding to the front wheel support driving devices 2L and 2R are fixed to the tip of the cylinder rod of the hydraulic cylinder 51. The cylinder body of the hydraulic cylinder 51 is fixed to the structure 24. As the hydraulic cylinder 51 extends and contracts, the advancing / retracting members 5 and 5 corresponding to the front wheel support drive devices 2L and 2R move in the vertical direction.
The advancing / retreating members 5 and 5 corresponding to the rear wheel support driving devices 3L and 3R are fixed to the tip of the cylinder rod of the hydraulic cylinder 52. The cylinder body of the hydraulic cylinder 52 is fixed to the structure 34. When the hydraulic cylinder 52 extends and contracts, the rear wheel support drive devices 3L and 3R
The advancing / retracting members 5 and 5 corresponding to are moved in the vertical direction.

An operator drives the vehicle 11, and the first drum 21 (first drum 31) and the second drum to which each wheel (front wheel 12L, front wheel 12R, rear wheel 13L, rear wheel 13R) of the vehicle 11 corresponds in plan view, respectively. When moving to a position (hereinafter referred to as “set position”) that overlaps the gap between the 22 (second drum 32), the advance / retreat member 5 is moved upward in advance.
When the advance / retreat member 5 is moved upward, the upper end surface of the advance / retreat member 5 is substantially the same height as the upper ends of the corresponding first drum 21 (first drum 31) and second drum 22 (second drum 32). .

When the vehicle 11 is moved to the set position, the advance / retreat member 5 is moved downward.
When the advancing / retracting member 5 moves downward, the wheels (front wheel 12L, front wheel 12R, rear wheel 13L, rear wheel 13R) of the vehicle 11 respectively correspond to the first drum 21 (first drum 31) and the second drum 22 ( The first drum 21 (first drum 31) and the second drum 22 (second drum 32) are in contact with and supported by the corresponding first drum 21 (first drum 31) and second drum 32 (second drum 32).
The position of the advancing / retreating member 5 when moving downward is the wheel (front wheel) supported by the first drum 21 (first drum 31) and the second drum 22 (second drum 32) corresponding to the upper end surface thereof. 12L / front wheel 12R / rear wheel 13L / rear wheel 13R) (see FIG. 1).

  When the inspection by the vibration device 1 is completed, the advance / retreat member 5 is moved upward. When the advancing / retracting member 5 moves upward, the advancing / retreating members 5, 5, 5, 5 are brought into contact with the lower ends of the respective wheels (front wheel 12 L, front wheel 12 R, rear wheel 13 L, rear wheel 13 R) and lifted upward. Lift up.

  Thus, when the operator drives the vehicle 11 to move the vehicle 11 before the inspection from the back of the vibration device 1 to the set position, or when moving the vehicle 11 from the set position to the front of the vibration device 1, the vehicle 11 wheel fits into the gap between the first drum 21 (first drum 31) and the second drum 22 (second drum 32), and the vehicle 11 is greatly shaken up and down to put a burden on the operator. Alternatively, it is possible to prevent a situation in which the bottom surface or the like of the vehicle 11 is rubbed against the floor surface 15 due to the vehicle 11 greatly shaking up and down, and the workability is excellent.

Hereinafter, the regulating rollers 6 and 6 will be described with reference to FIG.
The restricting rollers 6 and 6 are an embodiment of the restricting member according to the present invention, and abut against the rear portions of the rear wheels 13L and 13R to restrict the movement of the rear wheels 13L and 13R in the front-rear direction.
The restriction rollers 6 and 6 are moved between a position where the rear wheels 13L and 13R are in contact with the rear portion of the rear wheels 13L and 13R (see FIG. 1) and a position where the restriction rollers 6 and 6 are retracted below the floor 15 (see FIG. 2). It is possible to move between.
For example, when the vibration is applied to the vehicle 11 by the vibration device 1, the transmission of the vehicle 11 is normally in a "neutral" state with the engine driven (the wheels are not braked by the parking brake and State where the driving force transmission path and the wheel are separated).
However, if the transmission of the vehicle 11 is erroneously in the “parking” state (the driving force transmission path from the engine is separated from the wheel, but the wheel is braked by the parking brake), If the wheels (front wheels 12L, front wheels 12R, rear wheels 13L, and rear wheels 13R) are driven to rotate forward by the front wheel support drive devices 2L and 2R and the rear wheel support drive devices 3L and 3R, the vehicle 11 may jump out rearward. There is. Even in such a case, the regulation rollers 6 and 6 can contact the rear wheels 13L and 13R and prevent the vehicle 11 from jumping backward.

  In this embodiment, the restricting rollers 6 and 6 that contact the rear portions of the rear wheels 13L and 13R are provided. However, it is also possible to provide a restricting roller that contacts the front portions of the front wheels 12L and 12R. By doing so, it is possible to prevent the vehicle 11 from jumping forward even when the wheels of the vehicle 11 are rotated in the reverse direction.

Below, the shelter 7 is demonstrated using FIG. 1 and FIG.
The shelter 7 is an embodiment of a sound insulation member according to the present invention, and covers the periphery of the vehicle 11 set in the vibration exciter 1 to block external noise.
An inlet 7a is formed on the rear surface of the shelter 7, and an outlet 7b is formed on the front surface. A door 71 is provided at the entrance 7a, and a door 72 is provided at the exit 7b.
The vehicle 11 before the inspection moves forward and enters the inside of the shelter 7 from the entrance 7a. At the time of inspection (when the vibration is applied to the vehicle 11 by the vibration device 1), the door 71 and the door 72 are closed, and noise from the outside is blocked. After the inspection, the vehicle 11 moves forward and exits the shelter 7 from the exit 7b.

  By providing the shelter 7, vibration is applied to the vehicle 11 using the vibration device 1, and the external noise that becomes a disturbance factor of the inspection result when the presence or absence of abnormal noise generated by the vehicle 11 is inspected is cut off. This contributes to improving the accuracy of detecting abnormal noise and thus to the reliability of inspection results.

As described above, the vibration exciter 1 of this embodiment is
The first drum 21 and the projections 22a, the outer peripheral surfaces of which the projections 21a, 21a,..., The projections 21b, 21b,. The outer peripheral surface provided with the protrusions 22b, 22b,... And the protrusions 22c, 22b,... Supports and rotates the front wheel 12L with the second drum 22 that contacts the lower rear portion of the front wheel 12L of the vehicle 11. A front wheel support drive device 2L for driving;
The first drum 21 and the protrusions 22a, whose outer peripheral surfaces provided with the protrusions 21a, 21a, ..., the protrusions 21b, 21b, ... and the protrusions 21c, 21c, ... are in contact with the lower front part of the front wheel 12R of the vehicle 11. The outer peripheral surface provided with the protrusions 22b, 22b,... And the protrusions 22c, 22b,... Supports and rotates the front wheel 12R with the second drum 22 that contacts the lower rear portion of the front wheel 12R of the vehicle 11. A front wheel support drive device 2R for driving;
The first drum 31 and the protrusion 32a whose outer peripheral surface provided with the protrusions 31a, 31a,..., And the protrusions 31c, 31c,. The outer peripheral surface provided with the protrusions 32b, 32b,... And the protrusions 32c, 32b,... Supports the rear wheel 13L with the second drum 32 that contacts the lower rear portion of the rear wheel 13L of the vehicle 11. And a rear wheel support drive device 3L that rotates and drives,
The first drum 31 and the protrusion 32a whose outer peripheral surface provided with the protrusions 31a, 31a,..., And the protrusions 31c, 31c,. The outer peripheral surface provided with the protrusions 32b, 32b,... And the protrusions 32c, 32b,... Supports the rear wheel 13R with the second drum 32 that contacts the lower rear part of the rear wheel 13R of the vehicle 11. And a rear wheel support drive device 3R that rotates and drives,
Side support devices 4, 4, 4, 4 that respectively support the outer surfaces of the front wheels 12 L, the front wheels 12 R, the rear wheels 13 L, and the rear wheels 13 R of the vehicle 11;
It comprises.
Such a configuration has the following advantages.
That is, the vibration exciter 1 of the present embodiment supports and rotates each wheel in a state where it is fitted in the gap between the pair of drums including the first drum and the second drum. However, the vehicle does not move greatly in the front-rear direction, and there is no need to perform additional work such as fixing the vehicle with a wire or the like so as not to move in the front-rear direction. Therefore, it is easy to apply vibration to the vehicle, and the operation can be speeded up.

In addition, the side support devices 4, 4, 4, 4 of the vibration device 1 of the present embodiment are:
An abutment plate 41 that abuts against an outer surface of a corresponding wheel (any one of the front wheel 12L, the front wheel 12R, the rear wheel 13L, and the rear wheel 13R) and rotates integrally with the wheel;
An intermediate support unit 42 for supporting the contact plate 41 so as to be relatively rotatable and movable within a predetermined movable range in a direction substantially perpendicular to the axial direction of the wheel;
An air cylinder 43 for urging the contact plate 41 toward the outer surface of the wheel via the intermediate support unit 42;
A base that moves the contact plate 41 in the axial direction of the wheel (in this embodiment, the base frame 44 and the hydraulic cylinder 45 correspond to the base);
It comprises.
By comprising in this way, it is possible to support the vehicle 11 from the side, without inhibiting the vibration of each wheel of the vehicle 11.

Further, protrusions 21a, 21a,..., Protrusions 21b, 21b,... Provided on the outer peripheral surface of the first drum 21 and the outer peripheral surface of the second drum 22 of the front wheel support drive devices 2L and 2R of the vibration device 1 of this embodiment. .. and projections 21c, 21c (or projections 22a, 22a,..., Projections 22b, 22b,... And projections 22c, 22c,...) Are a plurality of sections divided in the axial direction of these drums. Each contact area has a different shape, size and arrangement,
Projections 31a, 31a ..., projections 31b, 31b ... and projections 31c, 31c ... provided on the outer peripheral surface of the first drum 31 and the outer peripheral surface of the second drum 32 of the rear wheel support drive devices 3L, 3R. (Or projections 32a, 32a,..., Projections 32b, 32b,..., And projections 32c, 32c,...) Have different shapes and sizes for each of a plurality of contact areas divided in the axial direction of these drums. And having an arrangement,
The side support devices 4, 4, 4, 4 move the vehicle 11 to the side.
With this configuration, it is possible to apply vibrations of a plurality of conditions to the vehicle 11 without exchanging the first drums 21 and 31 and the second drums 22 and 32.
Further, the side support devices 4, 4, 4, and 4 have a function of moving the vehicle 11 to the side, so that the equipment can be downsized and the equipment cost can be reduced.

Further, the vibration exciter 1 of this embodiment is
The frequency of vibration applied to the vehicle 11 is adjusted to 5 Hz or more and 100 Hz or less by adjusting the rotation speeds of the first drums 21 and 31 and the second drums 22 and 32.
By configuring in this way, it is possible to efficiently generate abnormal noise using the interior parts of the vehicle 11 as a generation source.

Further, the vibration exciter 1 of this embodiment is
It is disposed between the first drum 21 and the second drum 22 and between the first drum 31 and the second drum 32, and includes advance / retreat members 5, 5, 5, and 5 that move in the vertical direction.
With this configuration, the wheels of the vehicle 11 have a gap between the first drum 21 and the second drum 22 or a gap between the first drum 21 and the second drum 22 except when the vibration is applied to the vehicle 11 by the vibration device 1. It is possible to avoid getting stuck.
Therefore, a situation in which the vehicle 11 is greatly shaken up and down and a burden is imposed on the operator, or the bottom surface of the vehicle 11 is rubbed against the floor 15 due to the vehicle 11 being greatly shaken up and down. It is possible to prevent the vehicle 11 from being set and retracted from the vibration device 1.

Further, the vibration exciter 1 of this embodiment is
There are provided restriction rollers 6 and 6 that abut the rear portions of the rear wheels 13L and 13R of the vehicle 11 and restrict the movement of the rear wheels 13L and 13R in the front-rear direction.
By configuring in this way, it is possible to prevent the vehicle 11 from jumping rearward when vibration is applied to the vehicle 11.

Further, the vibration exciter 1 of this embodiment is
The vehicle includes a shelter 7 that covers the periphery of the vehicle 11 and blocks external noise.
With this configuration, external noise that is a disturbance element is cut off, which contributes to an improvement in the detection accuracy of abnormal noise.

Below, the outline | summary of the vehicle abnormal noise inspection apparatus 100 which is one Embodiment of the vehicle abnormal noise inspection apparatus based on this invention is demonstrated using FIG.1, FIG.2, FIG.5, FIG.6 and FIG.
The vehicle abnormal sound inspection apparatus 100 determines whether or not abnormal noise is generated in the vehicle 11 and the direction in which the abnormal noise is generated.
As shown in FIG. 5, the vehicle abnormal sound inspection device 100 mainly includes a vibration device 1, an abnormal sound recording device 8, an abnormal sound determination device 9, and the like.
In the following description, the description of the vibration device 1 is omitted.

In the following, an abnormal sound recording device 8 which is an embodiment of the abnormal sound recording device according to the present invention will be described with reference to FIGS. 1, 2, 5, 6 and 7.
The abnormal sound recording device 8 is a device for recording the abnormal sound, and is arranged in the vehicle 11.
The abnormal sound recording device 8 includes sound collecting cones 81a, 81b, 81c, 81d, 81e, 81f, and 81g, acoustic sensors 82a, 82b, 82c, 82d, 82e, 82f, and 82g, an amplifier 83, a wireless transmission unit 84, and a focusing member 85. , A main body 86, an urging hook 87, a hook 88, a battery 89, and the like.

The sound collecting cones 81a, 81b, 81c, 81d, 81e, 81f, and 81g are one embodiment of the sound collecting member according to the present invention, and collect sound from different directions.
The sound collecting cones 81a, 81b, 81c, 81d, 81e, 81f, and 81g are all substantially conical members that are hollow inside and open at the bottom. The sound collection cones 81a, 81b, 81c, 81d, 81e, and 81f are all open in parallel to the horizontal plane, and the angle formed by the opening directions between adjacent sound collection cones is 60 degrees. Has been placed. The sound collection cone 81g is arranged so that the opening direction faces upward. The roots (substantially conical tops) of the sound collecting cones 81a, 81b, 81c, 81d, 81e, 81f, and 81g are fixed to the focusing member 85.

The acoustic sensors 82a, 82b, 82c, 82d, 82e, 82f, and 82g are an embodiment of the abnormal sound detecting member according to the present invention, and are the roots of the sound collecting cones 81a, 81b, 81c, 81d, 81e, 81f, and 81g. These are provided in the respective sections, and are for detecting abnormal sounds collected by the sound collecting cones 81a, 81b, 81c, 81d, 81e, 81f, and 81g, respectively.
The acoustic sensors 82a, 82b, 82c, 82d, 82e, 82f, and 82g can be achieved by using commercially available acoustic sensors (for example, electrodynamic microphone, condenser microphone, piezoelectric microphone, etc.).
The acoustic sensors 82 a, 82 b, 82 c, 82 d, 82 e, 82 f, and 82 g are connected to the amplifier 83.

  The amplifier 83 acquires and amplifies information (usually weak voltage) related to abnormal noise detected by the acoustic sensors 82a, 82b, 82c, 82d, 82e, 82f, and 82g, and the wireless transmission unit 84 It converts to a format that can be sent.

The wireless transmission unit 84 is an embodiment of the wireless transmission member according to the present invention. The wireless transmission unit 84 is detected by the acoustic sensors 82a, 82b, 82c, 82d, 82e, 82f, and 82g and converted into a predetermined format by the amplifier 83. Information related to sound is transmitted wirelessly.
The amplifier 83 and the wireless transmission unit 84 may be integrated or separated.

  The main body 86 is a member constituting the main structure of the abnormal sound recording device 8, and other members included in the abnormal sound recording device 8 are attached to the main body 86.

The urging hook 87 and the hook 88 are one embodiment of the fixing member according to the present invention, and the sound collecting cones 81a, 81b, 81c, 81d, 81e, 81f, and 81g are attached to the front left seat 17L in the vehicle 11 interior. The headrest 18L provided and the headrest 18R provided in the front right seat 17R are fixed in the vicinity.
The urging hook 87 is provided on the left side of the main body 86. The urging hook 87 is urged toward the left side by a spring (not shown), and its tip end portion is engaged with a column of a headrest 18L provided on the front left seat 17L.
The hook 88 is provided on the right side of the main body 86. The tip end portion of the hook 88 engages with a column of a headrest 18R provided on the front right seat 17R.

As shown in FIG. 7, the front end portion of the hook 88 is engaged with the column of the headrest 18R provided on the front right seat 17R, and then the biasing force of a spring (not shown) that biases the biasing hook 87 is resisted. With the urging hook 87 moved to the right side, the main body 86 is disposed between the front left seat 17L and the front right seat 17R, and then the urging hook 87 is released to release a spring (not shown). The front end portion of the biasing hook 87 is engaged with the column of the headrest 18L provided on the front left seat 17L by the biasing force.
With this configuration, the sound collection cones 81a, 81b, 81c, 81d, 81e, 81f, and 81g are formed between the headrest 18L provided on the front left seat 17L and the headrest 18R provided on the front right seat 17R. Fixed between. The positions where the sound collection cones 81a, 81b, 81c, 81d, 81e, 81f, and 81g are fixed are in the vicinity of the headrest 18L provided on the front left seat 17L and the headrest 18R provided on the front right seat 17R. Corresponding to the position of the human ear sitting on the front left seat 17L and the front right seat 17R.

  The battery 89 is a power source that supplies power to the amplifier 83 and the wireless transmission unit 84, and is fixed to the main body 86.

As described above, the abnormal sound recording device 8 of this embodiment is
Sound collecting cones 81a, 81b, 81c, 81d, 81e, 81f, 81g that collect different sounds from different directions,
An acoustic sensor 82a that is provided in each of the sound collecting cones 81a, 81b, 81c, 81d, 81e, 81f, and 81g and detects abnormal sounds collected by the sound collecting cones 81a, 81b, 81c, 81d, 81e, 81f, and 81g.・ 82b ・ 82c ・ 82d ・ 82e ・ 82f ・ 82g
And a wireless transmission unit 84 that wirelessly transmits information related to abnormal noise detected by the acoustic sensors 82a, 82b, 82c, 82d, 82e, 82f, and 82g.
This configuration has the following advantages.
First, smaller abnormal noise can be detected (detection ability is improved), and the direction in which the abnormal noise is generated can be easily specified.
Therefore, it is possible to speed up the determination of the presence / absence of abnormal noise and the determination of the direction of occurrence, and contribute to improving the reliability of the determination result.
In this embodiment, the number of sound collecting members and acoustic sensors is seven, but if there are two or more, it is possible to determine the direction of the source of abnormal noise.
Second, when information related to abnormal noise detected by the abnormal noise detection member is transmitted by wire, the transmission wiring touches the vehicle and scratches the vehicle or causes other noise. However, in the case of the abnormal sound recording device 8, since the information related to the abnormal sound detected by the acoustic sensors 82a, 82b, 82c, 82d, 82e, 82f, and 82g is transmitted wirelessly, the vehicle is scratched. No additional noise is generated.

Also, the abnormal sound recording device 8 of this embodiment is
Energizing hooks 87 for fixing the sound collecting cones 81a, 81b, 81c, 81d, 81e, 81f, and 81g to the vicinity of the headrest provided in the front left seat in the vehicle 11 and the headrest provided in the front right seat. And a hook 88.
With this configuration, it is possible to detect abnormal noise at a position close to a human ear sitting on the seat of the vehicle 11 and contribute to improving the reliability of the determination result of abnormal noise.
The fixing member according to the present invention is not limited to the urging hook 87 and the hook 88 of this embodiment, and the fixing member according to the present invention may have other configurations as long as the sound collecting member can be fixed near the headrest provided on the seat in the vehicle interior. (For example, a rope, a belt, etc.) may be used.

  Below, the abnormal sound determination apparatus 9 which is one Embodiment of the abnormal sound determination apparatus which concerns on this invention using FIG.1, FIG.2 and FIG.5 is demonstrated.

The abnormal sound determination device 9 receives the information related to the abnormal sound of the vehicle 11 transmitted by the wireless transmission unit 84 of the abnormal sound recording device 8, and based on the information, the presence / absence of the occurrence of abnormal noise in the vehicle 11 and the abnormal sound The direction of occurrence is determined.
The abnormal sound determination device 9 mainly includes a wireless reception unit 91, a control unit 92, an input unit 93, a display unit 94, and the like.
The wireless reception unit 91 receives information related to abnormal sound transmitted by the wireless transmission unit 84 of the abnormal sound recording device 8. The wireless reception unit 91 is connected to the control unit 92.

  The control unit 92 includes a program (vibration program) related to the operation of the vehicle abnormal sound inspection device 100 (operation of the vibration device 1 and operation of the abnormal sound recording device 8), and a program (abnormal sound determination program) related to the determination of abnormal noise. ) Etc., a developing means for expanding the program, etc., a calculating means for performing a predetermined calculation in accordance with the program, a storage means for storing the calculation result and the like.

More specifically, the control unit 92 may have a configuration in which a CPU, a ROM, a RAM, an HDD, and the like are connected by a bus, or may be configured by a one-chip LSI or the like.
The control unit 92 may be a dedicated product, but can also be achieved by using a commercially available personal computer or workstation.

  The control unit 92 is connected to various sensor groups and various actuator groups included in the vibration device 1, and can control various operations of the vibration device 1 based on a vibration program stored in advance. is there.

More specifically, the control unit 92 is connected to the motors 23 and 33 of the vibration exciter 1 and can adjust the rotational speeds of the drive motors 23 and 33 and thus the rotational speeds of the wheels of the vehicle 11.
The control unit 92 is connected to an actuator (not shown) for moving the structure 34 of the vibration exciting device 1 in the front-rear direction of the vehicle 11 with respect to the structure 35, and can operate the actuator.
The control unit 92 is connected to the air cylinder 43 (more precisely, an adjustment valve provided in an air supply pipe for supplying compressed air to the air cylinder 43) of the vibration device 1, and is supplied to the air cylinder 43. It is possible to adjust the pressure of air, and hence the force with which the air cylinder 43 urges the contact plate 41 to each wheel.
The controller 92 is connected to an actuator (not shown) for sliding the cylinder body of the air cylinder 43 in the vertical direction along the slide member 44b, and can operate the actuator.
The control unit 92 is connected to the hydraulic cylinder 45 (more precisely, a regulating valve provided in a hydraulic oil supply pipe that supplies hydraulic oil to the hydraulic cylinder 45), and can extend and contract the hydraulic cylinder 45. is there.
The control unit 92 is provided in hydraulic cylinders 51 and 52 for moving the advancing and retracting members 5, 5, 5, 5 in the vertical direction (more precisely, provided in hydraulic oil supply pipes that supply hydraulic oil to the hydraulic cylinders 51, 52. And the advancing / retracting members 5, 5, 5, 5 can be moved in the vertical direction.
The control unit 92 moves the regulating rollers 6 and 6 between a position (see FIG. 1) that contacts the rear part of the rear wheels 13L and 13R and a position (see FIG. 2) retracted below the floor surface 15. It can be connected to an actuator (not shown) for actuating the actuator.
The control unit 92 is connected to the door 71 and the door 72 of the shelter 7 and can open and close these doors.

The control unit 92 is connected to the wireless reception unit 91, and can acquire information related to the abnormal sound of the vehicle 11 that the wireless reception unit 91 received wirelessly from the wireless transmission unit 84 of the abnormal sound recording device 8. is there.
Based on the information related to the abnormal sound of the vehicle 11 acquired from the wireless reception unit 91, the control unit 92 determines the presence / absence of the abnormal sound in the room of the vehicle 11 and the direction in which the abnormal sound is generated. The control unit 92 determines whether or not abnormal noise is generated in the vehicle 11 and the direction in which the abnormal noise is generated by an abnormal noise determination program stored in the control unit 92 in advance.

The input unit 93 is used by an operator or the like to input various data related to the vehicle abnormal sound inspection apparatus 100 to the control unit 92.
The input unit 93 may be a dedicated product, but can also be achieved using a commercially available keyboard, touch panel, or the like.

The display unit 94 displays the data input by the input unit 93, the operation status of the vehicle abnormal sound inspection apparatus 100, the determination result, and the like.
The display unit 94 may be a dedicated product, but can also be achieved using a commercially available monitor, liquid crystal display, or the like.

Since the abnormal sound determination device 9 of this embodiment acquires information related to abnormal sound from different directions from the abnormal sound recording device 8, the direction of the abnormal sound can be easily obtained without performing complicated processing on the information. And the intensity and frequency of noise from different directions can be measured with high accuracy.
Therefore, it is not necessary to use a high-performance (expensive) CPU or the like for the control unit 92 of the abnormal sound determination device 9, and the equipment cost can be reduced.

As described above, the vehicle abnormal sound inspection apparatus 100 of the present embodiment is
A vibration exciter 1;
Abnormal sound recording device 8,
The wireless transmission unit 84 of the abnormal sound recording device 8 receives the information related to the abnormal sound transmitted wirelessly, and based on the information, the presence / absence of the occurrence of the abnormal sound in the vehicle 11 and the occurrence direction of the abnormal sound are determined. A sound determination device 9;
It comprises.
With this configuration, the determination accuracy of the presence / absence of abnormal noise in the vehicle 11 and the direction in which the abnormal noise is generated can be improved, and the determination can be speeded up and applied to a mass production line.

Below, the vehicle abnormal noise inspection system 1000 which is one Embodiment of the vehicle abnormal noise inspection system which concerns on this invention using FIG. 8 is demonstrated.
The vehicle abnormal noise inspection system 1000 determines whether or not abnormal noise is generated in the vehicle 11 and the direction in which the abnormal noise is generated, and systematically accumulates the results.
Here, “accumulating the determination results systematically” includes storing the determination results in a database.

The vehicle abnormal noise inspection system 1000 mainly includes vehicle abnormal noise inspection apparatuses 100, 100, 100, a general apparatus 200, and the like.
In the following description, the description of the vehicle abnormal sound inspection apparatus 100 is omitted.

The overall device 200 is an embodiment of the overall device according to the present invention, and the vehicle abnormal sound inspection devices 100, 100, 100 determine the presence / absence of abnormal noise generation in the vehicle 11 and the result of determination of the abnormal noise occurrence direction. It accumulates systematically.
The overall device 200 mainly includes a control unit 201, an input unit 202, a display unit 203, and the like.

  The control unit 201 stores a program (vehicle abnormal sound determination result database creation program) and the like related to systematically accumulating the determination result of the presence / absence of abnormal noise and the generation direction of the abnormal sound in the vehicle 11. A developing unit for expanding the program, a calculating unit for performing a predetermined calculation according to the program, a storage unit for storing the calculation result, and the like.

More specifically, the control unit 201 may be configured such that a CPU, a ROM, a RAM, an HDD, and the like are connected by a bus, or may be configured by a one-chip LSI or the like.
The control unit 201 may be a dedicated product, but can also be achieved by using a commercially available personal computer or workstation.

The control unit 201 is connected to the control unit 92 of the abnormal sound determination device 9 of each vehicle abnormal sound inspection device 100, and the presence or absence of abnormal noise generation and the direction of abnormal noise generation stored in the control unit 92 are controlled. Get the result of the decision.
The control unit 201 systematically accumulates the obtained determination results of the presence / absence of abnormal noise generation and the abnormal noise generation direction of the vehicle 11.
More specifically, the control unit 201 uses the history of the vehicle 11 (for example, the frame number of the vehicle body, the vehicle type, the wheel base, the wheel, etc.) to determine the presence / absence of abnormal noise generation and the determination result of the abnormal noise generation direction. ), Information for specifying the vehicle abnormal sound inspection apparatus 100 that has performed the determination, the date and time of determination, and the like are stored in a searchable state.
The operation of systematically accumulating the determination result of the presence / absence of abnormal noise generation and the abnormal noise generation direction acquired by the control unit 201 is a predetermined program (vehicle abnormal noise determination) stored in the control unit 201. Result database creation program).

The input unit 202 is used by an operator or the like to input various data related to the vehicle abnormal sound inspection system 1000 to the control unit 201.
The input unit 202 may be a dedicated product, but may be achieved using a commercially available keyboard, touch panel, or the like.

The display unit 203 displays the data input by the input unit 202, the operation status of the vehicle abnormal sound inspection system 1000, the accumulated presence / absence of abnormal noise generation of the vehicle 11, and the determination result of the abnormal noise generation direction. To do.
The display unit 203 may be a dedicated product, but can also be achieved using a commercially available monitor, liquid crystal display, or the like.

As described above, the vehicle abnormal sound inspection system 1000 of the present embodiment is
Three vehicle abnormal sound inspection devices 100, 100, and 100, each including a vibration device 1, an abnormal sound recording device 8, and an abnormal sound determination device 9;
An overall device 200 that obtains the results of determination on the presence / absence of occurrence of abnormal noise in the room of the vehicle 11 and the direction of occurrence of abnormal noise by the three vehicle abnormal noise inspection devices 100, 100, 100, and systematically accumulates the results;
It comprises.
By configuring in this way, it is possible to improve the determination accuracy of the presence / absence of abnormal noise in the vehicle and the generation direction of the abnormal noise, and it is possible to increase the speed of the determination and to be applied to a mass production line.
In addition, by accumulating the determination results of the presence / absence of abnormal noise and the direction of abnormal noise generation in the vehicle 11 and analyzing the accumulated determination results, the vehicle 11 contributes to improving the quality of the vehicle 11, improving the mass production line, and the like. .
It should be noted that the number of applied vehicle abnormal sound inspection devices 100 included in the vehicle abnormal sound inspection system 1000 can be appropriately selected according to the scale of a mass production line or the like, and this embodiment (three). It is not limited. That is, the vehicle abnormal sound inspection system 1000 can include one or a plurality of vehicle abnormal sound inspection devices 100.

Side surface sectional drawing of the vibration apparatus which concerns on this invention. The plane sectional view of the vibration generator concerning the present invention. The top view of the 1st drum which concerns on this invention, and a 2nd drum. The partial front sectional view of the side support device concerning the present invention. 1 is a block diagram of a vehicle abnormal sound inspection apparatus according to the present invention. The perspective view of the allophone recording device concerning the present invention. The top view of the unusual sound recording device which concerns on this invention fixed in the vehicle interior. 1 is a block diagram of a vehicle abnormal sound inspection system according to the present invention.

DESCRIPTION OF SYMBOLS 1 Excitation apparatus 2L * 2R Front wheel support drive apparatus 3L * 3R Rear wheel support drive apparatus 4 Side support apparatus 11 Vehicle 21 1st drum 22 2nd drum 31 1st drum 32 2nd drum

Claims (10)

The outer peripheral surface provided with the protrusion supports the wheel with a first drum that contacts the lower front portion of the vehicle wheel and the outer peripheral surface provided with the protrusion supports the wheel with a second drum that contacts the lower rear portion of the vehicle wheel. A support drive for rotationally driving;
A side support device for supporting the outer surface of the wheel of the vehicle,
The protrusions provided on the outer peripheral surface of the first drum and the outer peripheral surface of the second drum have different shapes, sizes and arrangements for each of a plurality of contact regions divided in the axial direction of these drums,
The side support device is
A contact portion that contacts the outer surface of the wheel and rotates integrally with the wheel;
An intermediate support portion that supports the contact portion so as to be relatively rotatable and movable within a predetermined movable range in a direction substantially perpendicular to the axial direction of the wheel;
A biasing portion that biases the corresponding contact portion toward the outer surface of the wheel via the intermediate support portion and restricts movement in the axial direction;
A base for supporting the urging portion and moving the contact portion in the axial direction of the wheel to change the contact position between the wheel of the vehicle and the outer peripheral surface of the first drum and the outer peripheral surface of the second drum When,
Comprising
The lateral support device moves the vehicle laterally;
A vibration device characterized by that. The vibration apparatus according to claim 1, wherein a frequency of vibration applied to the vehicle is adjusted to 5 Hz or more and 100 Hz or less by adjusting a rotation speed of the first drum and the second drum . 3. The vibration device according to claim 1 , further comprising an advancing and retracting member that is disposed between the first drum and the second drum and moves in a vertical direction . The vibration device according to any one of claims 1 to 3 , further comprising a regulating member that abuts against a rear portion or a front portion of the wheel and restricts movement of the wheel in a front-rear direction . The vibration exciting device according to any one of claims 1 to 4 , further comprising a sound insulating member that covers the periphery of the vehicle and blocks external noise . The outer peripheral surface provided with the protrusion supports the wheel with a first drum that contacts the lower front portion of the vehicle wheel and the outer peripheral surface provided with the protrusion supports the wheel with a second drum that contacts the lower rear portion of the vehicle wheel. A support drive for rotationally driving;
A side support device for supporting the outer surface of the wheel of the vehicle,
The protrusions provided on the outer peripheral surface of the first drum and the outer peripheral surface of the second drum have different shapes, sizes and arrangements for each of a plurality of contact regions divided in the axial direction of these drums,
The side support device is
A contact portion that contacts the outer surface of the wheel and rotates integrally with the wheel;
An intermediate support portion that supports the contact portion so as to be relatively rotatable and movable within a predetermined movable range in a direction substantially perpendicular to the axial direction of the wheel;
A biasing portion that biases the corresponding contact portion toward the outer surface of the wheel via the intermediate support portion and restricts movement in the axial direction;
A base for supporting the urging portion and moving the contact portion in the axial direction of the wheel to change the contact position between the wheel of the vehicle and the outer peripheral surface of the first drum and the outer peripheral surface of the second drum When,
Comprising
The side support device used a vibration device that moves the vehicle to the side,
Vehicle abnormal sound inspection method characterized by the above. The vehicle abnormal noise inspection method according to claim 6, wherein a frequency of vibration applied to the vehicle is adjusted to 5 Hz or more and 100 Hz or less by adjusting a rotation speed of the first drum and the second drum . The vehicle abnormal noise inspection method according to claim 6 or 7, further comprising an advancing / retreating member that is disposed between the first drum and the second drum and moves in a vertical direction . The vehicle abnormal noise inspection method according to any one of claims 6 to 8, further comprising a restricting member that abuts against a rear portion or a front portion of the wheel and restricts movement of the wheel in the front-rear direction . The vehicle abnormal sound inspection method according to any one of claims 6 to 9 , further comprising a sound insulation member that covers the periphery of the vehicle and blocks external noise .

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