JPH0843263A - Inspection device for vehicle running condition on rollers - Google Patents

Abstract

(57) [Abstract] [Purpose] When the wheels WF and WR of the vehicle V are mounted and the wheels WF and WR are rotated on the rotatable rollers 4 and 5, the traveling state of the vehicle V is inspected. Vehicle body V1 when the vehicle is running
It should be possible to automatically and stably detect the vertical vibration location of the. [Structure] Sliders 11 are arranged on the left and right sides of the vehicle body V1 so as to be movable back and forth in the vehicle width direction with respect to the vehicle body V1. On both sides of the tip of the swinging member 13, rotatable measuring rollers 17, 17 that come into contact with the front and rear ends of the left and right side sills V2 of the vehicle body V1 are supported. The movement amount in the direction is detected by the encoder 18, and when the detected movement amount exceeds the reference value, it is determined that the vertical vibration is defective.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection apparatus for inspecting a running state of a vehicle by placing wheels of a vehicle on rotating rollers and rotating them, and more particularly to an apparatus for inspecting vertical vibration of a vehicle body.

[0002]

2. Description of the Related Art Generally, a tester line for inspecting each function of an assembled vehicle is provided at the final stage of a vehicle manufacturing line, one of which is used for wheel alignment adjustment and balance adjustment. And so on.

As a method of adjusting the alignment of the wheels, Japanese Patent Laid-Open No. 3-285139 discloses a roller tester having a rotatable roller installed on the floor, and each wheel of the vehicle is mounted on each roller. The stroke of each wheel in the vehicle width direction is detected with the four wheels being placed and rotated by the rotation of each roller at the same time, and the toe adjustment of the rear wheels and the front wheels is adjusted so that the stroke amount becomes a certain amount or less. What to do is suggested.

[0004]

However, even when such wheel alignment adjustment and balance adjustment are performed, it is impossible to completely eliminate the traveling vibration of the vehicle.
For example, a certain amount of traveling vibration occurs due to a defective wheel attachment or the like. Therefore, after that, an inspector gets into the vehicle to create an actual running state of the vehicle on the roller tester, and the quality of the vertical vibration of the vehicle is inspected based on the inspector's response at that time.

However, since this inspection is based on the sensitivity of the inspector, there are variations in the results, and it is not possible to accurately determine subtle vibrations, and moreover, the wheels that cause vibration failure are accurately determined. There is a problem that it cannot be specified.

The present invention has been made in view of the above points, and an object of the present invention is to add a predetermined inspection means in the case of inspecting the traveling state of the vehicle on the roller tester as described above, thereby providing a vehicle. The object of the present invention is to automatically and stably detect accurately the location of vertical vibration that causes a failure of the vehicle body during traveling.

[0007]

In order to achieve the above object, according to the present invention, when a vehicle is stationary run on a roller tester, the detectors are brought into contact with the front and rear positions near the wheels on the left and right side surfaces of the vehicle body. The vertical movement amount of the vehicle body is detected by each of these detectors, and the vertical vibration of the vehicle body is inspected based on the detected movement amount.

Specifically, according to the first aspect of the invention, an inspection is provided, in which each wheel of the vehicle is mounted and rotatable, and the wheel is rotated on the rotation roller to inspect the running state of the vehicle. The apparatus includes four vertical position detectors that contact the front and rear parts of the left and right side surfaces of the vehicle body near the wheels to detect the vertical movement amount of the contact points, and the movements detected by the vertical position detectors. A vertical vibration determining unit that compares the amounts with the reference value and determines a contact position of the vertical position detector whose movement amount exceeds the reference value as a defective vibration generating portion.

According to the second aspect of the present invention, each of the vertical position detectors is provided with a measuring roller that is rotated by contacting with the vehicle body, and the vertical movement amount of the vehicle body is detected by the rotation of the measuring roller. It is assumed that

According to the third aspect of the present invention, the vehicle width direction movement amount detector for detecting the amount of movement in the vehicle width direction of the front and rear vertical position detectors located on the left and right sides of the vehicle body, as well as the left and right sides of the vehicle body. A swing amount detector that detects the amount of swing in the horizontal plane between the front and rear vertical position detectors, the movement amount detected by the vehicle width direction movement amount detector, and the swing amount detector. The straight-movement determining means for comparing each swing amount with the reference value and determining that the vehicle is in the straight-traveling defective state when each amount exceeds the reference value is provided.

According to the fourth aspect of the invention, a pair of left and right sliders are arranged on the left and right sides of the vehicle body so as to be able to move forward and backward with respect to the vehicle body, and the tip ends of the sliders can be swung in a horizontal plane. A pair of left and right swinging members that are supported and respectively support front and rear vertical position detectors located on the left and right sides of the vehicle body are provided on both sides of each of the tip end portions, and the swing amount detector is the swinging member. It is assumed that it is configured to detect the swing amount of the.

According to the invention of claim 5, as in the invention of claim 4, a pair of left and right sliders arranged on the left and right sides of the vehicle body so as to be movable back and forth in the vehicle width direction, and the tip portions of the sliders. A pair of left and right swinging members that are swingably supported in a horizontal plane and that respectively support front and rear vertical position detectors located on the left and right sides of the vehicle body are provided on both sides of each tip portion. The vehicle width direction movement amount detector is configured to detect the movement amount of the slider.

[0013]

With the above construction, in the invention of claim 1, when the wheels of the vehicle are placed on the rotating rollers and rotated, and the vehicle is stationary and inspected, the vehicle body in the running state is inspected. Vertical position detectors abut on the front and rear portions of the left and right side faces, respectively, and the vertical movement amounts of the abutting portions are detected by the detectors. Then, the movement amount detected by each of the detectors is compared with a reference value in the vertical vibration determining means, and when the movement amount exceeds the reference value, the vertical position detector indicating the movement amount exceeding the reference value is detected. The contact portion is determined to be the defective vibration generating portion. Therefore, the locations where the vertical vibration of the vehicle body exceeds the reference value and becomes large can be detected independently by the detectors.
It is possible to automatically and accurately and stably inspect defective vertical vibration parts of the vehicle body.

According to the second aspect of the present invention, the measuring roller in each of the vertical position detectors contacts the vehicle body, and when the vehicle body vertically vibrates, the measuring roller rotates accordingly. For this reason,
The vertical movement amount of the vehicle body can be detected based on the rotation of each measurement roller, and the vertical movement amount of the vehicle body can be accurately detected with a simple structure.

According to the third aspect of the invention, the amount of movement of the front and rear vertical position detectors located on the left and right sides of the vehicle body in the vehicle width direction is determined by the vehicle width direction movement amount detector, and the same vertical position on the left and right sides of the vehicle body. The amount of swing in the horizontal plane between the detectors is detected by each of the swing amount detectors. Then, the straight traveling determination means compares the movement amount and the swing amount detected by each of the detectors with a reference value, and when each amount exceeds the reference value, it is determined that the vehicle is in a straight traveling failure state. In this way, by comparing the amount of movement and the amount of swing of the vertical position detectors on the left and right sides of the vehicle body in the vehicle width direction with the reference value, it is possible to determine the deviation of the vehicle in the stationary traveling state from the straight traveling direction. The straightness of can be accurately inspected.

According to another aspect of the invention, the swing member is swingably supported in the horizontal plane at the tip of each slider on the left and right sides of the vehicle body, and the left and right sides of the vehicle body are provided on both sides of the tip of the swing member. Since the front and rear vertical position detectors located on one side are respectively supported, the above vertical position detectors on the left and right sides of the vehicle body can be swung in the horizontal plane by the swinging of the swinging member. Therefore, by detecting the swing amount of the swing member with the swing amount detector, the swing amount in the horizontal plane between the vertical position detectors on the left and right sides of the vehicle body can be detected, and the detection can be performed with a simple structure. You can

According to a fifth aspect of the present invention, similarly to the fourth aspect of the present invention, the swing member is swingably supported in the horizontal plane at the tip of each slider on the left and right sides of the vehicle body. Since a pair of vertical position detectors are respectively supported on both sides of the front end portion, the front and rear vertical position detectors on the left and right sides of the vehicle body move in the vehicle width direction as the slider moves forward and backward. Therefore, by detecting the movement amount of the slider by the vehicle width direction movement amount detector, the movement amount of the vertical position detector on the left and right sides of the vehicle body can be detected, and the detection can be performed with a simple structure.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an inspection apparatus according to an embodiment of the present invention.
Is an inspection station installed on the tester line at the end of the vehicle manufacturing line, 2 is its floor, and openings 3, 3, ...
A front wheel roller 4 which is formed to have a recess corresponding to the positions of F and WR, is rotatable in which the front wheel WF of the vehicle V is placed in the front opening 3 corresponding to the front wheel WF, and also corresponds to the rear wheel WR. In the rear opening 3, the rear wheel rollers 5 on which the rear wheels WR are placed and rotatable are housed in such a state that a part of each of them is projected from the floor 2 surface. Each front wheel roller 4
Has its rotational axis located directly below the front wheel WF, and mounts the front wheel WF on the top of the roller. On the other hand, the rear wheel roller 5 is a pair of front and rear rollers 5F, 5
The rear wheel WR is placed between the rollers 5F and 5R. Then, the front and rear rollers 5F, 5 of the rear wheel roller 5
The Rs, the front side roller 5R of the rear wheel roller 5 and the front wheel roller 4 are connected to each other by a transmission mechanism such as a belt transmission (not shown) so as to be synchronously rotatable in the same direction. Get on the wheel and move to each wheel WF, W
R is placed on the rollers 4 and 5, and on these rollers 4 and 5, the driving wheel WR (or WF) of the vehicle V drives and rotates the roller 5 (or 4) on which it is placed, and non-driving. The roller 4 (or 5) on which the wheel WF (or WR) is mounted is also rotated via the transmission mechanism, and the vehicle V is rotated with the wheel WF, WR and the rollers 4, 5 being rotated.
Is run stationary and the running condition is inspected.

Inspection units 8 are installed on the left and right side floors 2 of the inspection station 1, respectively. The left and right inspection units 8 and 8 are the same, and only the right side shown in the figure will be described (the left side inspection unit 8 is denoted by the same reference numeral and its detailed description is omitted). , A cylinder 9 extending in the left-right direction (the vehicle width direction of the inspection vehicle V). The cylinder 9 is expanded and contracted in response to a control signal from a control display device 31 described later, and its piston rod 10 projects toward the vehicle V side and a slider 11 is integrally connected to the tip of the piston rod 10. There is. That is,
The slider 11 is movable in the vehicle width direction with respect to the vehicle body V1 at the right side position of the vehicle body V1 by the expansion and contraction operation of the cylinder 9.

The slider 11 comprises a piston rod 10
A base portion 11a coupled to the tip of the base 11a, a bifurcated support portion 11b (tip portion) extending from the base portion 11a to the vehicle body V1 side with a vertical interval therebetween, and a direction orthogonal to the piston rod 10 from the base portion 11a. A pair of front and rear restricting portions 11 that extend in the front-rear direction of the vehicle body and each tip portion is bent and formed on the vehicle body V1 side to regulate the swing of a swinging member 13, which will be described later, below a predetermined level.
c, 11c.

Further, a swinging shaft 14 through which a swinging member 13 vertically penetrates a supporting portion 11b which is a tip end portion of the slider 11.
Is supported so as to be swingable in the horizontal plane. The swing member 13 is integrally fixed to a base portion 13a supported by a support portion 11b of the slider 11 at a central portion of a tip portion of the base portion 13a, and extends in a vehicle body front-rear direction that is a direction orthogonal to the base portion 13a. The support portion 13b is shaped like a circle.

The supporting portion 13b of the swinging member 13
At both ends, a pair of front and rear vertical positions that abut on the front and rear end portions of the surface of the side sill V2 on the right side of the vehicle body V1 and detect the vertical movement amount of the contact points (side sill V2) respectively. The detectors 16, 16 are supported. As shown in enlarged detail in FIGS. 2 and 3, each of the vertical position detectors 16 includes a measuring roller 17 rotatably supported at the tip of the supporting portion 13b of the swinging member 13, and the measuring roller 17 is When the cylinder 9 extends and the slider 11 moves forward together with the swinging member 13, it comes into contact with the surface of the side sill V2 on the right side of the vehicle body V1 and rotates in accordance with the vertical movement of the vehicle body V1 (side sill V2) in the contact state. Has become.

A first encoder 18 composed of a rotary encoder is provided near the tip of the supporting portion 13b of the swing member 13.
Is supported via a bracket 19, a gear 20 is integrally attached to the input shaft 18a of the first encoder 18, and the gear 20 meshes with a gear 21 which is integrally attached to the measuring roller 17 so as to rotate. The rotation of the measurement roller 17 caused by the vertical movement of the vehicle body V1 is transmitted to the first encoder 18 via the gears 21 and 20, and the first encoder 18
Thus, the amount of vertical movement of the contact portion (side sill V2) of the measurement roller 17 on the vehicle body V1 is detected.

Further, the supporting portion 11b of the slider 11 is
The swing shaft 14 that supports the swing member 13 rotates integrally with the swing member 13. A second encoder 23, which is a rotary encoder as a swing amount detector, is attached to the swing shaft 14. And this second encoder 23
By the pair of vertical position detectors 16 and 16 on the side of the vehicle body V1.
The swing amount in the horizontal plane between them is detected as the swing amount of the swing member 13.

A rack 24 extending from the base 11a in a direction away from the vehicle body V1 is attached to the base 11a of the slider 11 in parallel with the piston rod 10.
A third encoder 26, which is a rotary encoder as a vehicle width direction movement amount detector, is supported on the side of the cylinder 9, and an input shaft 26a of the third encoder 26 is a vehicle body front-rear direction that is a direction orthogonal to the piston rod 10. Direction, and a pinion 27 that meshes with the rack 24 is integrally attached to the input shaft 26a, and the vehicle width of the pair of vertical position detectors 16 and 16 on the side of the vehicle body V1 is fixed by the third encoder 26. The amount of movement in the direction is detected as the amount of movement of the slider 11. The cylinder 9,
The rack 24, the third encoder 26, and the like are covered with a rectangular box-shaped cover 28.

The expansion / contraction operation of the cylinder 9 of each inspection unit 8 is controlled by a control display device 31 installed on the front surface of the floor V of the vehicle V. Although not shown, the control display device 31 can operate the output signals of the first to third encoders 18, 23 and 26 and an inspector seated in the driver's seat of the vehicle V. The signals of the start switch 32 and the end switch 33 are input. Further, the control display device 31 includes a plurality of display units 31a, 31a, ....

The procedure of the inspection on the control display device 31 will now be described with reference to FIG. 4. First, when the inspector rides on the vehicle V and runs the vehicle stationary, first, the vehicle body V1.
Check the vertical vibration of. That is, the first step S1
Determines whether the vehicle speed has reached a predetermined value (for example, 120 km / H). If this determination is YES, step S
In 2, it is determined whether the start switch 32 has been turned on. If this determination is YES, in step S3, the cylinders 9 of the left and right inspection units 8 and 8 are extended to move the slider 11 forward together with the swing member 13 toward the vehicle body V1, and the tip of the support portion 13b of the swing member 13 is extended. The measurement rollers 17 of the vertical position detectors 16 and 16 are moved forward. Then, in step S4, it is determined whether or not each of the measuring rollers 17 is in contact with the surface of the left and right side sills V2 of the vehicle body V1, and if this determination is YES,
In step S5, the output value of the third encoder 26 at this time is stored. In the next step S6, the measuring roller 1 is
For each first encoder 18 drivingly connected to 7, it is determined whether or not the output value exceeds a preset reference value. When the determination is YES, the wheels WF and WR corresponding to the encoder 18 having an output value exceeding the reference value
Is displayed on the corresponding display portion 31a of the control display device 31, and then the straightness of the vehicle V is evaluated. On the other hand, when the determination in step S6 is NO, the straightness is evaluated as it is. The straightness evaluation is started by the inspector first releasing the steering wheel V3 of the vehicle V in step S8. Next, in step S9, the vehicle body V1 flows leftward or rightward from the original straight traveling direction, so that the swinging member 13 swings so that the output values of the second encoders 23 and 23 exceed the reference value, or the vehicle V1. One slider 11 on the left and right moves forward and the other slider 11 retracts to move both third encoders 2
It is determined whether or not the difference between the output value of 6, 26 and each of the stored values exceeds the reference value. If this determination is YES,
In step S10, the second and third encoders 2
From the change characteristics of the output values of Nos.
After displaying the flow direction of 1 on the display unit 31a of the control display device 31, the process proceeds to step S11. On the other hand, step S
When the determination in 9 is NO, the process directly proceeds to step S11. In this step S11, the end switch 3
It is determined whether or not 3 is turned on. This judgment is Y
When ES is reached, the cylinders 9 in the left and right inspection units 8 and 8 are contracted in step S12, and the slider 11 is moved.
Together with the swing member 13 from the vehicle body V1 side, and in step S13, the measuring roller 17 caused by the contraction of the cylinder 9 is moved.
After confirming that the vehicle has retreated, the inspector reduces the vehicle speed in step S14. This completes the series of inspections.

In this embodiment, in steps S6 and S7 in the above flow, the vertical movement amount of the vehicle body V1 detected by the first encoder 18 of each vertical position detector 16 is compared with the reference value to determine the movement amount. When the reference value is exceeded, the vertical vibration portion of the vehicle body V1 corresponding to the vertical position detector 16 is determined to be a defective vibration generating portion, and the vertical vibration determining means 35 is displayed. .

Further, in steps S9 and S10, the amount of movement detected by the third encoder 26 and the vibration detected by the second encoder 23 while the vehicle V is stationary while the inspector releases the steering wheel V3. The straight-movement determining means 36 is configured to compare the respective motion amounts with reference values, determine that the vehicle V is in a lateral flow state and is in a straight-travel failure state when each amount exceeds the reference value, and display the lateral-flow state. To be done.

Next, the vehicle V performed in the above embodiment
The inspection will be described. First, the inspector gets into the vehicle V manufactured and conveyed to the tester line, operates the vehicle V to get into the inspection station 1, and puts its front wheels WF on the front wheel rollers 4 and rear wheels WR for the rear wheels. The rollers 5 are placed between the front and rear rollers 5F and 5R. Then
The vehicle V is kept running while the inspector is in the vehicle, and the wheels WF and WR are rotated on the rollers 4 and 5, so that the wheels WF and
The running state of the vehicle V is inspected while the WR and the rollers 4 and 5 are rotated.

That is, the vehicle speed is a predetermined value (120 km /
H), the inspector turns on the start switch 32.
When the N operation is performed, the cylinders 9 in the left and right inspection units 8 and 8 respectively extend and the slider 11 moves the swinging member 1.
3 and 3 toward the vehicle body V1 side, and accordingly, the swing member 13
The measuring rollers 17 of the vertical position detectors 16 at both ends of the support portion 13b also move forward. When the measuring rollers 17 come into contact with the surfaces of the left and right side sills V2 of the vehicle body V1, the output value of the third encoder 26 at this time is stored as a stored value. After the measurement roller 17 comes into contact with the surface of the side sill V2 in this way, whether or not the output value of each first encoder 18 drivingly connected to the measurement roller 17 exceeds a preset reference value is determined. When the output values of the four first encoders 18, 18, ... Are all less than or equal to the reference value, it is determined that there is no vertical vibration failure of the vehicle body V1 due to poor mounting of the wheels WF, WR.

On the other hand, at least one first encoder 18
If the output value exceeds the reference value, it is determined that the wheels WF, WR at the positions corresponding to the encoder 18 having the output value exceeding the reference value are improperly mounted or the balance is adjusted. Is displayed in.

After inspecting the vertical vibration of the vehicle body V1 in this way, the inspector releases the steering wheel V3 while maintaining the initial vehicle speed (120 km / H) and inspects the straightness of the vehicle V when traveling. . That is, when the straight traveling property is within the proper range, the vehicle body V1 moves left and right even if the steering wheel V3 is released, or the vehicle body V moves in the original straight traveling direction.
Since 1 does not move in the turning direction, the swinging member 13 does not swing, and the output value of the second encoder 23 becomes the reference value or less. Alternatively, one of the left and right sliders 11 will move forward and the other slider 11 will move backward, and the difference between the output values of the third encoders 26, 26 and the stored value will not exceed the reference value. From these results, it is determined that the straightness of the vehicle V is good.

On the other hand, when the straightness of the vehicle V exceeds the proper range, when the handle V3 is released, the vehicle body V1 moves to the left or right as a whole, or the vehicle body V1 moves in the turning direction with respect to the original straight traveling direction. . The swinging movement of the vehicle body V1 causes the swinging member 13 to swing so that the output value of the second encoder 23 exceeds the reference value. Or by moving the vehicle body V1 in the left-right direction,
The slider 11 on the approaching side of the vehicle body V1 moves backward from the initial position, while the slider 11 on the moving away side of the vehicle body V1 moves forward, so the output values of the third encoders 26, 26 that detect the amount of movement of these sliders 11 The difference between the stored value and the stored value exceeds the reference value. Therefore, it is determined that the straightness of the vehicle V is poor based on the result of exceeding these reference values,
On the display unit 31a of the control display device 31, the straightness defect is displayed together with the flow direction of the vehicle body V1.

After this, the inspector turns on the end switch 33.
When operated, the cylinders 9 of the inspection units 8 and 8 contract and the slider 11 moves backward together with the swing member 13 from the vehicle body V1 side. Then, due to the contraction of each of the cylinders 9, the measuring roller 17 retracts to the original position before the start of the inspection,
The vehicle speed is reduced by the inspector. With the above, the inspection for one vehicle V is completed, and thereafter, the same inspection is repeated for the next vehicle V. Incidentally, the vehicle V that has been determined to have the above-described vehicle body vibration defect or straight traveling defect is subjected to a predetermined rework and then subjected to the same inspection again.

Therefore, in this embodiment, the rollers 4,
5, the measuring rollers 17 of the vertical position detectors 16 and 16 are respectively brought into contact with the front and rear ends of the left and right side sills V2 and V2 of the vehicle body V1 of the vehicle V which is in the stationary traveling state. Rotate the first encoder 18
The vertical movement amount of the contact portion of the measuring roller 17 on the side sill V2 is detected, and when each movement amount exceeds the reference value, it is determined that the vehicle V has a bad vibration. Vertical and vertical vibration points can be automatically and stably inspected.

Moreover, the measuring roller 17 is brought into contact with the side sill V2 of the vehicle body V1, and the vertical movement amount of the vehicle body V1 is detected based on the rotation of the measuring roller 17 due to the vertical vibration of the vehicle body V1. The amount can be accurately detected with a simple structure.

The vertical position detectors 16 and 16 are attached to both ends of the supporting portion 13b of the swinging member 13, and
The swinging member 13 is swingably supported on the supporting portion 11b of the slider 11 in a horizontal plane, and the swinging amount of the swinging member 13 is controlled by the second encoder 23, and the forward / backward movement amount of the slider 11 is controlled by the third encoder 26. Detect these 2nd and 3rd
Since the output values of the encoders 23 and 26 are compared with the reference value to determine the deviation of the vehicle V in the stationary traveling state from the straight traveling direction, the straight traveling property of the vehicle V in the stationary traveling state is accurately inspected with a simple structure. can do.

[0039]

As described above, according to the invention of claim 1, when inspecting the running state of the vehicle by placing the wheels of the vehicle on the rotating rollers and rotating them, the left and right side front and rear portions of the vehicle body are examined. The vertical position detectors are brought into contact with the parts in the vicinity of the wheels to detect the amount of vertical movement of the contact parts, and when the amount of movement detected by each vertical position detector exceeds the reference value, By determining that part as a bad vibration occurrence part, each position where the vertical vibration of the vehicle body exceeds the reference value and becomes large is detected independently by the detector, and the defective vertical vibration part of the vehicle body is automatically detected. It is possible to accurately and stably inspect, and to automate the inspection of vehicle body vibrations and improve the inspection accuracy.

According to the second aspect of the present invention, each vertical position detector has a structure in which the vertical movement amount of the vehicle body is detected by the measuring roller that contacts and rotates with the vehicle body. The vertical movement amount of the vehicle body can be detected, and the structure of the vertical position detector can be simplified and the detection accuracy can be improved.

According to the third aspect of the present invention, the amount of movement of the vertical position detectors on the left and right sides of the vehicle body in the vehicle width direction and the amount of swing in the horizontal plane are respectively detected, and the detected amount of movement and swing are detected. Since it is determined that the vehicle is in a straight-running defective state when each of the motion amounts exceeds the reference value, it is possible to accurately inspect the straightness of the vehicle in the stationary traveling state on the rollers.

According to the fourth aspect of the present invention, the sliders are arranged on the left and right sides of the vehicle body so as to be movable back and forth with respect to the vehicle body.
A pair of left and right swinging members, which respectively support front and rear vertical position detectors located on the left and right sides of the vehicle body, are swingably supported in the horizontal plane at the front end of each slider.
By detecting the swing amount of the vertical position detector in the horizontal plane based on the swing amount of the swing member, the swing amount in the horizontal plane between the vertical position detectors on the left and right sides of the vehicle body can be simplified. It can be easily detected by the structure.

According to the fifth aspect of the invention, the amount of movement of the pair of vertical position detectors on the left and right sides of the vehicle body in the vehicle width direction is detected based on the amount of movement of each slider. The amount of movement of the vertical position detectors on the left and right sides of the vehicle body in the vehicle width direction can be easily detected with a simple structure.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing an inspection device according to an embodiment of the present invention.

FIG. 2 is a side view showing a state in which a vertical encoder of a vertical position detector detects a vertical movement amount of a vehicle body.

FIG. 3 is a plan view showing a state in which a vertical movement amount of a vehicle body is detected by a first encoder.

FIG. 4 is a flowchart showing an inspection procedure.

[Explanation of symbols]

 4 Roller for Front Wheel (Rotating Roller) 5 Roller for Rear Wheel (Rotating Roller) 8 Inspection Unit 9 Cylinder 11 Slider 11b Support (Tip) 13 Swing Member 16 Vertical Position Detector 17 Measuring Roller 18 First Encoder 23 Second Encoder (rocking amount detector) 26 Third encoder (vehicle width direction movement amount detector) 31 Control display device 35 Vertical vibration determination means 36 Straight traveling determination means V Vehicle V1 Body V2 Side sill WF Front wheel WR Rear wheel

Claims (5)

[Claims] 1. An inspection device comprising a rotatable roller on which each wheel of a vehicle is placed and rotatable, wherein the wheel is rotated on the rotatable roller to inspect the traveling state of the vehicle. Abutting on the front and rear parts near the wheel, the vertical movement amount of the contact part is detected 4
Two vertical position detectors and the amount of movement detected by each of the above vertical position detectors are compared with a reference value, and the contact point of the vertical position detector whose amount of movement exceeds the reference value is determined to be the defective vibration occurrence part. And a vertical vibration determining unit for controlling the traveling state of the vehicle on the roller. 2. The vehicle traveling state inspection device on a roller according to claim 1, wherein each of the vertical position detectors includes a measuring roller that abuts against the vehicle body and rotates, and the vehicle body is rotated by the rotation of the measuring roller. An apparatus for inspecting a vehicle running state on a roller, which is configured to detect a vertical movement amount. 3. The vehicle traveling direction inspection device for detecting a traveling state of a vehicle on a roller according to claim 1, wherein an amount of movement in a vehicle width direction of front and rear vertical position detectors located on left and right sides of a vehicle body is detected. A detector, a swing amount detector that detects the swing amount in the horizontal plane between the front and rear vertical position detectors located on the left and right sides of the vehicle body, and the movement amount detected by the vehicle width direction movement amount detector. And a straightness determination means for comparing the swinging amount detected by the swinging amount detector with a reference value and determining that the vehicle is in a straight traveling failure state when each amount exceeds the reference value. Inspection device for vehicle running condition on rollers. 4. A device for inspecting a vehicle traveling state on a roller according to claim 3, wherein a pair of left and right sliders are arranged on the left and right sides of the vehicle body so as to be movable back and forth with respect to the vehicle body, and each of the sliders. And a pair of left and right swinging members that respectively support front and rear vertical position detectors located on the left and right sides of the vehicle body, which are swingably supported in the horizontal plane at the front end of the vehicle. The swing amount detector is configured to detect the swing amount of the swing member, and is a device for inspecting a vehicle traveling state on a roller. 5. The apparatus for inspecting a vehicle traveling state on a roller according to claim 3, wherein a pair of left and right sliders are arranged on the left and right sides of the vehicle body so as to be movable back and forth in the vehicle width direction with respect to the vehicle body. And a pair of left and right swinging members that respectively support front and rear vertical position detectors located on the left and right sides of the vehicle body, which are swingably supported in the horizontal plane at the front end of the vehicle. The vehicle width direction movement amount detector is configured to detect the movement amount of the slider, and is a device for inspecting a vehicle traveling state on a roller.