JPH045937B2 - - Google Patents

Description

Detailed Description of the Invention Technical Field The present invention relates to a roller lock device suitable for use in a wheel inspection device that inspects the inclination and dynamic characteristics of wheels, and more specifically relates to a roller lock device that locks a pair of rollers in one action. The present invention relates to a roller locking device capable of simultaneously locking and unlocking rollers. Furthermore, the present invention relates to a wheel inspection device to which such a roller lock device can be applied.

BACKGROUND ART Conventionally, inspection devices have been used to inspect the mounting condition of wheels of automobiles and the like. Various conditions are set for wheels installed on vehicles such as automobiles, and in particular, in relation to the running characteristics, the toe angle,
So-called inclination degrees such as camber angle and caster are set. These degrees of inclination may be inspected as an item of vehicle inspection after a vehicle is manufactured and before it is put on the market, or may be inspected when repairing a vehicle such as replacing wheels. In order for a vehicle to have good running performance, it is important that the degree of inclination of the wheels is set accurately. Furthermore, the dynamic characteristics of the wheels, that is, the characteristics of the state in which the wheels are rotating, include the amount of left and right deflection of the wheels, the turning angle of the wheels, etc., and the running characteristics of a vehicle also depend on these dynamic characteristics. It is also important to be able to measure dynamic properties with high precision, as they are significantly affected.

By the way, as a conventional technique, Japanese Patent Application Laid-Open No. 51-83301 discloses a technique for measuring the toe angle and/or camber angle of a wheel while keeping the wheel in a rotating state.
There is a technique disclosed in Japanese Patent Publication No. 54-49701. However, in these techniques, the wheel is supported on a pair of rollers and rotated, but the side surface of the wheel is not supported or a contact roller is brought into rolling contact with one of the outer surfaces for measurement. , since it does not position the geometric center position of the wheel, which is the object to be measured, by holding the left and right sides.
Accurate measurements are difficult to make. Furthermore, Japanese Patent Application No. 109235/1987, previously filed by the same applicant as the present applicant, is a technique for supporting wheels on a floating table and sandwiching the wheels from the left and right sides to position the geometric center of the wheels. There are Japanese Patent Application Nos. 59-9502 and 61-41913. In the techniques proposed in these applications, the wheels supported on the table are maintained statically, so the dynamic Characteristics cannot be measured.

As described above, in the conventional technology, it is not possible to completely inspect the static and dynamic characteristics of the wheel, especially when it is mounted on a vehicle, and in particular, the amount of left and right deflection of the rotating wheel. is impossible to measure.

Purpose The present invention has been made in view of the above points, and makes it possible to eliminate the drawbacks of the prior art as described above, and to measure the characteristics of wheels with high precision, especially depending on the type and condition of the wheels. An object of the present invention is to provide a wheel inspection device that can measure the dynamic characteristics of a wheel with high precision without being influenced by the wheel. The main purpose of the wheel inspection device of the present invention is to inspect the dynamic characteristics of the wheel while the wheel is rotating, but it also inspects desired items such as toe angle while the wheel is stationary. It is also possible to measure the angle of inclination. In particular, it is an object of the present invention to provide a roller lock device suitable for use in wheel inspection equipment and the like.

Configuration In order to achieve the above-mentioned objects and other objects, the present invention provides a roller locking device that can simultaneously lock or unlock a pair of rollers with a simple configuration. be done. According to the present invention, a pair of rollers are supported rotatably while being spaced apart from each other by a predetermined distance, a pair of end gears are integrally fixed to each of the pair of rollers, and a distance between the pair of end gears is provided. An intermediate gear is provided in mesh with each of the end gears, and a lock position is provided in which one of the pair of end gears simultaneously meshes with the intermediate gear, and an unlocked position separated from the lock position. There is provided a roller lock device characterized in that a movable lock gear is provided, and a position control means is provided for controlling the position of the lock gear between the lock position and the non-lock position. In a preferred embodiment, the pair of rollers is used as support rollers that rotatably support the lower side of a wheel in a vehicle wheel inspection device.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic exploded perspective view showing the overall structure of a wheel inspection device 10 constructed based on one embodiment of the present invention. As shown in the figure, the vehicle inspection device 10 has a frame 11 having a roughly box-like shape. It consists of four perforated side walls. An arm 12ar is attached to one end of the bottom wall 11a via a bracket 12er.
is fixed and extends a predetermined distance. Arm 12
The tip of the ar is rotatably connected to the tip of the lever 12br of the equalizer 12. Equalizer 12
has a swinging lever 12c that rotatably holds the other end of the lever 12br.
c is supported at its center by a rotating shaft 12d, and rotates in the horizontal direction around the rotating shaft 12d. The equalizer 12 has a symmetrical configuration, and therefore the lever 12 corresponds to the lever 12br.
Has bl.

As shown in FIGS. 2 and 3, four wheel inspection devices 10 are normally provided, one for each wheel of a four-wheeled vehicle, in order to inspect each wheel. In the wheel inspection system shown in FIGS. 2 and 3, a pair of wheel inspection devices 10 for two front wheels are arranged side by side and separated from each other in the lateral direction, while a separate wheel inspection device 10 is installed for two rear wheels. A pair of wheel inspection devices 10 are arranged side by side and spaced apart in the lateral direction. Therefore, in the wheel inspection system shown in FIGS. 2 and 3,
Four wheel inspection devices 10 are arranged in a row approximately in the horizontal and vertical directions. However, as will be described later, each wheel inspection device 10 is provided so as to be movable at least in the lateral direction, and therefore each pair of wheel inspection devices 10 for front wheels and rear wheels is provided with a guide extending in the horizontal direction. They are provided so that they can move closer to each other on the rail. Note that the distance between the pair of wheel inspection devices 10 for the front wheels and the pair of wheel inspection devices 10 for the rear wheels can be set to an arbitrary distance on, for example, a rail extending in the vertical direction. In this case, the present invention can be applied even when the wheelbase distances of the vehicles to be inspected are different.

As shown in FIG. 2, a pair of wheel guides 7 are fixed integrally with the frame 11 of each wheel inspection device 10.
0,70 are provided, and these guides 7
0 and 70 are set apart from each other by a predetermined distance, and have a function of guiding the wheel into the corresponding wheel inspection device 10 when the wheel is moving forward. The pair of wheel guides 70, 70 are set so that the wheels widen toward the direction of movement indicated by the white arrows in FIG. , the corresponding wheels contact their guides 70, 70 to move the wheel inspection device 10 laterally and guide the corresponding wheels to a predetermined position on the wheel inspection device 10. In this case, since the pair of left and right wheel inspection devices 10, 10 are operatively connected by the equalizer 12, the left and right wheels are connected to the pair of left and right wheel inspection devices 10, 10.
When the tread center position, which is the center position of the left and right wheels, is approximately aligned with the center line CL of the system formed by connecting the centers 12d, 12d of the pair of front and rear equalizers 12, 12. be done. That is, the longitudinal centerline of the vehicle, which is determined by connecting the front and rear tread centers of the vehicle to be inspected, is the center line of the front and rear equalizers 12, 12, respectively.
The center line of the inspection system determined by connecting 12d
Almost consistent with CL.

In addition, in FIG. 3, in particular, a pair of left and right wheel inspection devices 10, 10 for front wheels are operatively connected by an equalizer 12, and a pair of left and right wheel inspection devices 10, 10 for rear wheels are connected to each other by an equalizer 12. A state in which they are operatively connected by an equalizer 12 is shown. Therefore, the equalizer 12 for the front wheels has a fixed center 12.
d, and a pair of left and right wheel inspection devices 1
0 and 10 are positioned symmetrically with respect to this center 12d, and the equalizer 12 for the rear wheels also has a similar center 12d. Therefore, the virtual longitudinal centerline CL determined by connecting the front wheel center 12d and the rear wheel center 12d defines the centerline of the inspection system. On the other hand, the center position of the front wheel inspection device 10 and the rear wheel inspection device 1
Virtual distance L determined by connecting the center position of 0
corresponds to the wheelbase distance of the vehicle to be inspected. As mentioned above, by configuring each wheel inspection device 10 to be movable in the longitudinal axis direction, it is possible to set the distance L between the front and rear inspection devices to an arbitrary value, and it is possible to set the distance L between the front and rear inspection devices to an arbitrary value. This inspection system can be applied to

Returning to FIG. 1, the frame 11 of the inspection device 10 is movably supported on a pair of guide rails 13f and 13b spaced apart in the front-rear direction. The guide rails 13f and 13b are fixed on the bottom of the pit P (see Fig. 10) in the inspection area, or
Or, when configuring the front-rear distance L to be adjustable,
Another longitudinally extending guide rail (not shown)
established in In this way, since the inspection device 10 is provided so as to be movable left and right on the guide rails 13f and 13b, the vehicle to be inspected is
0, the lateral position of the vehicle is adjusted and the longitudinal centerline CL of the inspection system is adjusted.
and the longitudinal center position of the vehicle are approximately matched.

On the low wall 11a of the frame 11, approximately U-shaped support stands 25, 25 are provided at front and rear positions and fixed to the low wall 11a. These supports 25,2
A pair of left and right guide rails 24l, 24r are provided between 5.
(24r not shown) is fixedly provided.
A pair of intermediate supports 23f and 23b (23f is not shown) are provided on the pair of guide rails 24l and 24r so as to be slidable and spaced apart in the front-rear direction. Guide rails 21f and 21b are fixedly provided on each of these intermediate supports 23f and 23b, respectively. Furthermore, a pair of guide rails 21f and 21b extending in the left and right direction
A floating table 20 is provided above the floating table 20 so as to be slidable in the left-right direction along these guide rails 21f and 21b. A pair of lower guide rails 24r, 24r and a pair of upper guide rails 2
1f and 21b extend in directions perpendicular to each other (that is, the lower guide rails 24r and 24l extend in the longitudinal direction or the longitudinal direction, and the upper guide rail 21
f, 21b is the left-right direction or horizontal direction), therefore, the floating table 20 is connected to the low wall 11 of the frame 11.
It is movable in any direction on the horizontal plane relative to a.

An upper central rotating shaft 27 is provided at the center of the floating table 20 via a rotating bearing 26 . The upper rotating shaft 27 determines the center position of the floating table 20, and although it does not move in the vertical direction, it is rotatable relative to the floating table 20 via the rotating bearing 26. A generally U-shaped support roller assembly 30 is integrally fixed to the upper end of the upper central shaft 26. The support roller assembly 30 has a bottom wall and a pair of side walls standing upright from both sides of the bottom wall, and a pair of support rollers 31, 31 are spaced apart from each other by a predetermined distance in the front and back direction between the pair of opposing side walls. Moreover, they are arranged side by side and rotatably supported. The corresponding wheels 1 of the vehicle to be inspected are rotatably placed on these pair of support rollers 31, 31.

In one embodiment of the invention, at least one of the pair of support rollers 31, 31 is connected to drive rotation means. That is, in that case, at least one of the support rollers 31, 31 is driven to rotate, and therefore, the wheel 1 placed on the support rollers 31, 31 is driven to rotate by frictional contact with the support rollers 31, 31. Ru. In this case, it is also possible to provide a groove or the like on the surface of at least one of the support rollers 31, 31 that is driven and rotated to increase the frictional force with the wheel 1. Support roller 3
For example, a motor can be used as the drive rotation means for driving and rotating the drive unit 1. Although such a motor can be provided separately from the support roller 31, it is also possible to incorporate it within the support roller 31. That is, FIG. 8a shows a configuration in which a motor is built in the support roller 31, and corresponds to the embodiment shown in FIG. On the other hand, FIG. 8b shows a configuration in which a motor 81 is provided separately from the support roller 31, and the support roller 31 and the separate motor 81 are connected by a clutch 80.

In the configuration of FIG. 8a, the support roller 31
has a cylinder 31a, a coil 31b provided in the cylinder 31a and integrally fixed to the cylinder 31a via a support frame 31d, and an armature 31c provided spaced apart in the coil 31b. ing. still,
In the embodiment shown in FIG. 1 as well, an armature 31c is shown inside the support roller 31. Therefore, in this configuration, the armature 31c is fixedly provided, and the coil 31b and the cylinder 31 integral therewith are
a is driven and rotated. On the other hand, in the configuration shown in FIG. 8b, the support roller 31 is a rotatable cylinder 31a.
Rotating force is transmitted from an external motor 81 through the clutch 80 to drive and rotate it in a predetermined direction. Incidentally, as a modification of FIG. 8b,
It is also possible to have a configuration in which a pulley is fixedly provided at one end of the cylinder 31a and rotational force is transmitted from the motor 81 via a belt.

In the configuration for supporting the wheel 1 described above, the pair of support rollers 31 are provided spaced apart from each other in the front and rear, but the number of support rollers 31 may be any number other than two. Furthermore, in addition to using the support rollers 31, it is also possible to use other configurations that rotatably support the wheels 1. for example,
It is also possible to wrap an endless belt between a pair of support rollers and to rotatably support the wheel 1 on the belt. Furthermore, it is also possible to arrange a large number of balls or rollers on a flat plate to rotatably support the wheel 1. In this case, it is necessary to provide means for regulating the position of the wheel 1 in the longitudinal direction.

Engagement members 32 are integrally fixed to the front and rear ends of the support roller assembly 30, respectively.
Note that this engaging member 32 can also be formed by cutting out a part of the support roller assembly 30. Each engagement member 32 is provided to protrude in the front-rear direction, and has a substantially circular engagement hole 32a formed at its tip. In the illustrated example, the engagement hole 32a is partially open. Furthermore, as shown in FIG. 1, an engagement protrusion 33 is provided in correspondence with the engagement hole 32a so as to be movable in the front-back direction and engageable with the engagement hole 32a in the forward position. Note that this engagement protrusion 33 and engagement member 32
This constitutes a support roller swinging system that supports the support roller assembly 30 horizontally rotatably about the engaging protrusion 33, in which the wheels 1 are connected to the support roller 31. It has a function of aligning the relative orientations of the wheel 1 and the support roller 31 when the wheel 1 rotates on the support roller 31 . Note that this support roller swing system will be described later in the first
This will be explained in detail with reference also to FIGS. 3 and 14.

As explained above, the support roller assembly 30 is
While rotatably supporting the wheel 1 to be inspected,
The wheel 1 is rotatably supported in a horizontal plane relative to the frame 11 via the upper rotation center shaft 27, and the frame 11 is further supported via the upper guide rails 21f, 21b and the lower guide rails 24l, 24r.
It is supported so that it can move freely within a two-dimensional plane in the horizontal direction relative to.

A pair of guide rails 11f and 11b (11f is not shown) are fixed to the low wall 11a of the frame 11 so as to be separated from each other in the front-rear direction and extend laterally.
A lower support table 40 is provided on these guide rails 11f and 11b, and therefore, the lower support table 40 supports these guide rails 11.
It is movable laterally along f, 11b. An upper support table 41 is provided on the lower support table 40 so as to be relatively rotatable via a ball 59 (see FIG. 5a). A pantograph mechanism 42 having a substantially square shape is provided on the upper support table 41 by four levers. That is, on the upper support table 41,
Two pairs of guide rails 41f, 41b and 41r, 41l are fixedly provided in a cross shape in mutually orthogonal directions, and the vertical guide rail 41
A pair of sliding bodies 43f and 43b are slidably disposed on f and 41b, and a pair of blocks 43 are disposed on lateral guide rails 41r and 41l.
r and 43l are respectively slidably disposed. These sliding bodies 43f, 43b and block 43
r and 43l are rotatably connected by four levers of the pantograph mechanism 42. Furthermore, a cylinder device 44a is fixedly provided on the block 43r, and the tip end of a rod 44b of the cylinder device 44a that can move forward and backward is fixed to the opposing block 43l. Therefore, by operating the cylinder device 44a, the opposing blocks 43r, 4
3l are controlled to move closer to each other, and at this time, these blocks 43 are controlled by the pantograph mechanism 42.
Since r and 43l are connected, block 43
The approaching and separating movements of r and 43l are performed symmetrically.

Further, corresponding contact roll assemblies 47l, 47r are fixedly attached to the left and right blocks 43l, 43r, respectively. For that purpose, each block 43
l, 43r are formed into a roughly L shape,
Holding parts 45l and 45r stand upright from the respective ends.
is formed. On the other hand, the pair of contact roller assemblies 47l and 47r have holding parts 46l and 46r, respectively, and these holding parts 46l and 46r are fitted into holding parts 45l and 45r of blocks 43l and 43r, respectively. Therefore, the pair of contact roller assemblies 47l, 47r are connected to the pair of blocks 43l, 43
r and are integrally fixed to each other.
The contact roller assemblies 47l, 47r each include a pair of contact rollers 47lf, 47lb and 47rf, 47rb, respectively.
have. Pair of contact rollers 47lf, 47
lb, 47rf, and 47rb are rotatably held (see Fig. 5c), and are each arranged at an angle. The reason why these contact rollers are arranged at an angle is that when rolling contact is made with the side surface of the wheel 1, the rotational direction of the contact roller coincides with the traveling direction of the side surface of the wheel 1, that is, the circumferential direction. It is for this purpose. Therefore, in order to use this inspection device for wheels 1 of different diameters, it is preferable to configure the inclination angle of these contact rollers to be settable to an arbitrary value.

These pair of contact roller assemblies 47l, 47
Since the blocks r are integrally fixed to the respective blocks 43l and 43r, they can be moved close to each other and away from each other. Therefore, these contact roller assemblies 47
1 and 47r are movable between a backward position where they are separated from the wheel 1 and a forward position where they are in rolling contact with the left and right side surfaces of the wheel 1 supported on the support rollers 31 and 31, respectively. Furthermore, this contact roller assembly 4
The movement toward and away from 7l and 47r is controlled by operating the two-way cylinder device 44a. That is, when applying hydraulic pressure in the first direction to the cylinder device 44a to cause the rod 44b to protrude, the pair of contact roller assemblies 47l and 47r are moved away from each other, that is, to the retreat position, while the cylinder device 44a By applying hydraulic pressure in the second direction, the rod 44b is pulled back, and the pair of contact roller assemblies 47l, 47r are moved toward each other, ie, to the forward position where they contact the wheel 1.

On the other hand, a lower central shaft 41e is rotatably provided at the center of the lower support plate 40 via a rotary bearing 50 and fixed to the center of the upper support plate 41. As best shown in FIG. 5b, the center position of the lower central shaft 41e is always aligned with the center position of the pantograph mechanism 42.
Therefore, even if the cylinder device 44a is operated and the pantograph mechanism 42 is operated, the center position of the pantograph mechanism 42, that is, the center position between the pair of opposing contact roller assemblies 47l and 47r is the center position of the lower central shaft 41e. are always consistent. Therefore, after the wheel 1 is positioned at a predetermined position on the support rollers 31, 31, the cylinder device 44a is operated in a direction relatively close to each other to advance the pair of contact roller assemblies 47l, 47r. 1, the geometric center position of the wheel 1, which is the object to be measured, is determined as the center position of the pair of contact roller assemblies 47l and 47r, and therefore the wheel 1 is aligned with the lower central axis 41e. In this case, when the geometric center of the wheel 1 is aligned with the upper central axis 72, the upper central axis 27 is aligned with the lower central axis 41e.

An internal rotary bearing 50 that rotatably supports the lower central shaft 41e is rotatably held within an external rotary bearing 51. The inside of the external rotation bearing 51 is movably held on a rotation plate 52. That is, as shown in detail in FIG. 4, a rotating lever 53ar integrally formed extends from one end of the rotating plate 52, and the approximate center of the rotating lever 53ar is located at the bottom surface of the pit. It is rotatably held via a fixed rotation point 53br fixedly provided on the top. On the other hand, the other end of the rotating lever 53ar is at the pivot point 5.
It is connected to a pantograph 54 via 4ar. The pantograph 54 is rotatably connected to a pair of main moving bodies 54b and 54c slidably provided on a vertically extending rail 55 provided on the bottom surface of the pit. Although not shown in FIGS. 1 and 4, another inspection device is connected to the other end of the pantograph 54. Therefore, the lower central axis 41e of the inspection device 10 rotates around the rotation point 53br, but the lower central axis 4 of each of the two inspection devices 10, 10 connected via the pantograph 54
1e and 41e are always located at symmetrical positions with respect to the longitudinal center axis CL. Therefore, each cylinder device 44a of the left and right inspection devices 10,10
When the is moved to the forward position and comes into rolling contact with the wheel 1, the left and right lower central shafts 41e, 41e are located at symmetrical positions with respect to the longitudinal axis central axis CL, and therefore the left and right wheels 1, 1, respectively The geometric center position of is located at a symmetrical position with respect to the longitudinal central axis CL.

As shown in FIG. 4, the rotating plate 52 is connected to a pair of guide rails 8 provided on the bottom of the pit.
It is slidably provided on 5f and 85b.
Incidentally, since the rotation plate 52 is provided to be rotatable around the rotation point 53br, these guide rails 85f, 85b have an arc shape centered on the rotation point 53br. A pair of protrusions 51l and 51r are provided on the left and right sides of the external rotation bearing 51.
The external rotation bearing 51 is disposed within a generally rectangular opening 51 a bored in the rotation plate 51 . A pair of grooves 52l, 52r are carved on both left and right sides of the rectangular opening 51a of the rotation plate 51, and a pair of left and right protrusions 51l, 52r of the external rotation bearing 51 are formed.
51r are slidably received in the corresponding grooves 52l and 52r, respectively. Therefore, the rotation plate 52 rotates around the rotation point 53br, but the external rotation bearing 51 and therefore the lower central axis 41e are linear in the left-right direction perpendicular to the longitudinal axis CL of the system. Do some exercise. This is because the lower central shaft 41e is held by the lower support plate 40 via the internal rotation bearing 50, and the lower support plate 40 is held slidably in the left and right direction along the guide rails 11f and 11b. It corresponds to being present.

Furthermore, as shown in FIGS. 1 and 5a, a toe angle detector 56 is fixed to the lower end of the lower central shaft 41e. That is, when the pair of contact roller assemblies 47l and 47r are advanced to make rolling contact with the wheel 1, the orientation of the upper support plate 41 is aligned with the orientation of the wheel 1, and the lower central axis 41
Since e is fixed at the center position of the upper support plate 41, the rotational position of the lower central shaft 41e coincides with the left-right position of the wheel 1. Toe angle detector 5
6 is fixed to the lower end of the lower central shaft 41e, it is possible to accurately detect the toe angle of the wheel 1 by detecting the angular displacement of the lower central shaft 41e from the reference position.

As shown in FIG. 1, the present wheel inspection apparatus 10 is further provided with a locking device 60. The locking device 60 is attached to the frame 11 and can engage with the pair of support rollers 31, 31. When engaged, the locking device 60 locks the support rollers 31, 31 so that they cannot rotate. The lock device 60 includes a cylinder device 61 and pivot points 63f and 6 on the cylinder 61.
A pair of actuation arms 62f, 62b are operatively connected via 3b. Actuation arms 62f, 62b
The distal end portion of can take an engaged position where both are close to each other and a disengaged position where both are separated. Therefore, via the cylinder device 61, the pair of actuating arms 62f, 62
When the distal ends of b are in the engagement position, these distal ends engage with the pair of support rollers 31, 31, and hold these support rollers 31, 31 in a locked state so that they cannot rotate. On the other hand, when the pair of actuating arms 62f, 62b are separated via the cylinder device 61 and the tip portions are removed, the locked state is released and the support rollers 31, 31 are placed in a rotatable state. This locking device 60 locks the support rollers 31,
31 in a locked state.

FIG. 2 shows the present wheel inspection device 10 shown in FIG.
This figure shows the overall configuration of a wheel inspection system or method that can simultaneously or sequentially inspect each wheel of a four-wheeled vehicle such as an automobile using four wheels. In the wheel inspection system shown in Fig. 2, a pair of wheel inspection devices 10fl and 10fr are provided for the front wheels.
A pair of wheel inspection devices 10bl and 10br for the rear wheels are spaced apart from each other and placed side by side in the lateral direction. As mentioned above, each wheel inspection device 10 is placed on the pair of guide rails 13f, 13b so as to be movable in the lateral direction, and therefore the pair of wheel inspection devices 10bl, 10
br, 10fl, and 10fr are movable laterally toward each other. As described above, between the pair of wheel inspection devices 10bl, 10br or 10fl, 10fr, the support rollers 31 are connected to each other via the equalizer 12, while the contact roller assemblies 47 are connected to each other via the pantograph 54. connected via. Therefore, the support roller 31 of each wheel inspection device 10 is aligned with the longitudinal centerline CL of the system.
The geometric center position of the wheel, which is always equidistant from the system centerline and which is clamped by and determined by the contact roller assembly 47, also
Always located equidistant from CL.

In the embodiment shown in FIG. 2, a pair of wheel inspection devices 10bl and 10br for rear wheels are mounted on a slide table 82. In the embodiment shown in FIG. The slide table 82 has a guide rail 81l extending parallel to the system center line CL laid on the bottom surface inside the pit P.
It is provided so as to be able to slide on 81r. On the other hand, a pair of wheel inspection devices 10fl and 10fr for the front wheels are fixedly provided on the bottom surface of the pit P. Therefore, a pair of wheel inspection devices 10bl and 10br for the rear wheels
is a guide rail 81 for a pair of fixedly installed wheel inspection devices 10fl and 10fr for the front wheels.
1, 81r relative to each other in the longitudinal direction. Although not shown in FIG. 2, a lock is provided for fixing the slide table 82 at a desired position. Therefore,
In the system shown in FIG. 2, even if the wheel base distances of the vehicles to be inspected are different, all wheels can be inspected simultaneously by moving the slide table 82 appropriately and locking it at the desired position. It is possible to do so. Figure 3 is the second
The inclination measurement system of the wheel inspection system shown in the figure is functionally shown. In this specification, the angle of inclination of the wheel refers to the angle at which the wheel is inclined with respect to an arbitrary reference line, and specifically refers to the toe angle, camber angle, caster angle, wheel deflection angle, and wheel inclination angle. This includes the cut angle, etc. As schematically shown in FIG.
Located at each wheel of a wheeled vehicle. In this case, each wheel is connected to a pair of support rollers 3 of each wheel inspection device 10.
Further, both sides of each wheel are pressed by a pair of contact rollers 47rf, 47rb and another pair of contact rollers 47lf, 47lb, respectively.
Therefore, each wheel is held rotatable and its geometric center position is aligned with the center of the angle sensor 56. Angle sensor 56 of each wheel inspection device 10
sends the detection signal to the processing/display device 80, performs arithmetic processing in accordance with a predetermined program, and displays the result. process·
The display device 80 is composed of, for example, a microprocessor or computer system and a display device such as a CRT.

In the system shown in FIG. 3, in each wheel inspection device 10, contact rollers 47rf, 4
When 7rb, 47lf, and 47lb are pressed against both sides of the wheel with a predetermined pressure, the geometric center position of the wheel is aligned with the angle sensor 56, so that the angle of the wheel obtained from the angle sensor 56 can be detected in this state. By processing the signals accordingly, it is possible to measure the toe angle of the wheel in a static state. Therefore, it is possible to calculate the toe-in or toe-out of each of the front wheels and the rear wheels in a static state. Furthermore, although not shown in FIG. 3, as shown in FIG. 1, an upright support lever 48 is provided on the outer contact roller assembly 47r, and an additional contact roller 49 for measuring the camber angle is provided at the tip of the support lever 48. The camber angle of the wheel 1 can also be measured at the same time by measuring the inclination of the wheel 1 in the vertical direction and supplying the measured value to the processing and display device 80. An additional contact roller 49 is also rotatably provided at the tip of the support lever 48 so as to be in rolling contact with the wheel 1 in the circumferential direction. In addition, in this system, each wheel is placed on a pair of support rollers 31, 31, so
It is also possible to perform the above-described dynamic measurement of the toe angle and camber angle while each wheel is rotating. Furthermore, when performing this dynamic measurement, there is an external drive type in which the support roller 31 is driven and rotated to rotate the wheel 1 thereon, and the support roller 31 is set to be freely rotatable and the wheel 1 is driven by the engine of the automobile. It is also possible to carry out the inspection in any self-propelled manner, in which the measurement is carried out by rotating the device.

Furthermore, recently, automobiles equipped with four-wheel steering devices have been attracting attention, and in such four-wheel steering vehicles, the rotation of the steering wheel is transmitted to each of the four wheels. Angle-following type vehicles are attracting attention in four-wheel steering vehicles, and in this case, the longitudinal orientation of the rear wheels is set to follow the longitudinal orientation of the front wheels according to a predetermined program. Ru. That is, for example, when the steering wheel is sequentially turned to the right, the front wheels are sequentially turned to the right, but the way the rear wheels are turned is somewhat different. That is, the rear wheels can initially be turned to the right by a small angle (for example, 1 degree to the right), but when the steering wheel is turned to the right beyond the first predetermined angle (for example, 15 to 16 degrees to the right), the front wheels will turn to the right. It cuts to the right along with it, but
The rear wheel turns to the left one after another (for example, up to 5 points to the left)
Every time).

In this way, some four-wheeled vehicles have rear wheels that change left and right according to a predetermined program in response to changes in the angle of the front wheels, and the front and rear wheels change angles in a specific manner in response to steering wheel operations. is required to do so. In the system shown in FIG. 3, a program for causing each wheel to change its orientation in a specific manner according to the turning angle of the steering wheel is stored in advance in the storage device of the processing/display device 80. It is possible to inspect each wheel. In this case, according to the present system, the geometric center position of each wheel is aligned with the center of the angle sensor 5, so it is possible to perform highly accurate measurement. Furthermore, each wheel has a pair of support rollers 31, 3.
1, it is also possible to perform dynamic tests by rotating each wheel 1. Dynamic testing is an extremely effective test because it is performed under conditions that closely approximate the actual driving conditions of the vehicle. Note that, as described above, the dynamic test can take either an externally driven type or a self-driven type. Although not shown in FIG. 3, it is preferable to provide a detector for detecting the turning angle of the steering wheel of the vehicle to be inspected, and to supply the detection signal to the processing/display device 80.

Furthermore, it is also possible to simultaneously test each wheel of a four-wheel drive vehicle using the system shown in FIG. By the way, in the case of four-wheel drive wheels, a viscous cut spring is installed between the front wheel differential assembly and the rear wheel differential assembly. When relative rotation occurs between the shafts connecting the four wheels, the four wheels are operationally connected. Therefore, when performing dynamic tests on externally driven wheels of a four-wheel drive vehicle,
It is necessary to rotate each wheel so that relative rotation as described above does not occur. The direction of rotation of the wheels in such a case is indicated by an arrow 85 in FIG. That is, the pair of front wheels are rotated in opposite directions 85fl and 85fr.
The front and rear wheels on the right and left sides are also rotated in opposite directions, namely 85fr, 85br and 85fl.
and 85BL, drive and rotate. By driving and rotating the four wheels in their own directions in this way, it is possible to rotate each wheel independently, and it is possible to perform dynamic inspections with each wheel of a four-wheel drive vehicle mounted on the vehicle. It is possible to do so.

6a to 6c are schematic diagrams showing the principle of the dynamic wheel inspection device 10 shown in FIG. 1. FIG. As shown in FIGS. 6a to 6c, the wheel 1 to be inspected is placed on a pair of support rollers 31, 31 while mounted on a vehicle (that is, in a completed vehicle state) and rotated thereon. . Both sides of the wheel 1 are in rolling contact under pressure with contact rollers 47rf, 47rb and 47lf, 47lb, respectively, and the geometric center of the wheel 1 is set at the center position between these left and right contact rollers, and the angle is It is aligned with the center of sensor 56. According to such a configuration, it is not only possible to detect the toe angle of the wheel 1 while it is rotating, but also to accurately measure the amount of left and right deflection (angle or amplitude) of the wheel 1. It is.

In other words, conventionally, the amount of runout of a vehicle was measured using a contact or non-contact sensor on one side of the wheel, but in this case, the amount of deflection of a vehicle was measured using a contact or non-contact sensor on one side of the wheel. It has been impossible to accurately measure the amount of wheel lateral runout, especially the runout amplitude value, due to the influence of the characters 1a and the like. For example, when a contact roller is brought into rolling contact with one side of the wheel 1 and the amount of lateral runout of the wheel 1 is measured, a measurement signal as shown in FIG. 15 is obtained. The measurement signals obtained in this case include not only the sinusoidal primary signal representing the amount of lateral runout of the wheel 1, but also the distortion of the wheel 1 and especially the characters on the sidewall.
It has a high frequency secondary component generated by a. Therefore, it is impossible to accurately determine the lateral vibration amplitude value A, especially when this second-order component occurs near the peak or valley of the sine wave.

On the other hand, according to the present invention, as shown in FIG.
The angle θ of the lateral runout of each wheel 1 can be measured by the angle sensor 56 by rotating the wheel 1, and since the outer diameter of the wheel 1 to be measured is known, the measured value From θ and the known outer diameter of the wheel 1, it is possible to accurately measure the amount of lateral runout of the wheel 1, especially its amplitude value. According to the configuration of the invention, the wheel 1 is supported symmetrically by contact rollers from both sides, so that the distortion of the wheel 1 or the character 1
a is canceled out on both the left and right sides, and there is no adverse effect. Note that the letters 1a on the wheel 1 are the name of the manufacturer, etc., and the letters 1a are usually provided symmetrically on the left and right side walls.
Further, deformation of the wheel means, for example, that the wheel 1 may deform to some extent in the lateral direction due to a difference in tire air pressure, but such lateral deformation is usually symmetrical, and as in the present invention, By bringing the contact rollers into symmetrical contact with the left and right sides of the wheel 1,
It is possible to offset those effects. Therefore, since it is possible to accurately measure the amount of lateral deflection of the wheel 1, if this amount of deflection exceeds a predetermined value, it is possible to determine whether the attachment condition of the wheel 1 is acceptable or not, indicating that the attachment condition of the wheel 1 is defective. It is possible to make a judgment.

FIG. 9 shows the support roller assembly 3 shown in FIG.
FIG. 2 is a schematic diagram showing another configuration of 0. That is, the ninth
The support roller assembly 130 shown in the figure is formed into a roughly U-shape similar to the support roller assembly 30 shown in FIG. Support roller assembly 1
30 is not directly fixed to the upper rotation shaft 27, but the support roller assembly 130 is rotatably provided on the base plate 136, and the base plate 136 is fixed to the tip of the upper rotation shaft 27. It will be done. That is, one side of the support roller assembly 130 is rotatably connected to the base plate 136 via a rotation shaft 131, and the other side of the support roller assembly 130 has a protrusion 132.
is prominent. A cylinder device 133 is fixed to a base plate 136 below the projection 132, and the tip of a rod 134 of the cylinder device 133, which can move forward and backward, is fixed to the projection 132. On the other hand, an angle detector 13 is provided between the support roller assembly 130 and the base plate 136.
5 is inserted.

Therefore, by operating the cylinder device 133 to make the axis of rotation of the support roller 31 parallel to the axis of rotation of the wheel 1 attached to the vehicle to be inspected, and reading the value of the angle detector 135 at that time. It is possible to measure the camber angle α of the wheel 1. Note that instead of the cylinder device 133, the protrusion 1
It is also possible to insert a compression spring with an appropriate spring constant between the spring 32 and the base plate 136. In this case, when the wheel 1 is placed on the support roller 31, the rotation axis of the wheel 1 and the rotation axis of the support roller 31 automatically become parallel, and the value of the angle detector 135 at that time is read. By this, it is possible to detect the camber angle.

FIG. 10 shows a correction system in which the robot 101 corrects the inclination of each wheel 1 based on the detection results of the wheel detection device 10. That is, in this correction system, as shown in FIG. 3, the degree of inclination of each wheel 1 is detected, and the detected values are sent to the processing/display device 80, where they are arithmetic-processed according to a predetermined program. , the amount of correction for the degree of inclination of each wheel 1 is sent to the robot 101, and the robot 101 corrects the degree of inclination of each wheel according to the amount of correction. The robot 101 is housed in a pit P dug below the floor GL of the workshop.

FIG. 11 is a schematic diagram showing another structure of the locking mechanism for the support roller 31. In the configuration shown in FIG. 1, a locking mechanism 60 is provided for locking the support roller 31 when the wheel 1 rides on the support roller 31 or runs off the support roller 31. In this locking mechanism 60, the tips of the pair of arms 62f and 62b directly contact the pair of support rollers 31 and 31, respectively.
31 can be locked. In the configuration shown in FIG. 11, a lifter plate 111 that can be raised and lowered is disposed between a pair of support rollers 31, 31, and the lifter plate 111 is connected to a cylinder device 114.
It is pivotally supported at the tip of the rod 115. The lifter plate 111 has a generally trapezoidal cross section,
It has a central lifting surface 112 and curved braking surfaces on either side. Each curved braking surface is provided with a brake shoe 113a or 113b. Therefore, when the rod 115 is raised by the cylinder device 114, the brake shoe 113
a and 113b press into contact with the respective support rollers 31 and 31 to hold these support rollers 31 and 31 in a non-rotatable state. In this state, wheel 1
rides up and rests on the lift surface 112. Next, when the cylinder 114 is actuated to lower the rod 115, the brake shoe 113
a, 113b are spaced apart from the respective support rollers 31, 31 to enable the support rollers 31 to rotate, while the wheels 1 are spaced apart from the respective support rollers 31, 31.
It will be placed between 1 and 31. lift plate 111
In this state with the lowered position, the lift surface 11
2 does not come into contact with wheel 1.

FIG. 12 shows a locking device 150 capable of simultaneously locking two rotatably supported rollers. Furthermore, this lock device 1
50 can be effectively used as the locking device 60 of the wheel inspection device 10 shown in FIG. FIG. 12 shows a specific configuration when applied as the locking device 60 of the wheel inspection device 10 shown in FIG.

As shown in FIG. 12, one support roller 31
An end gear 153a is integrally provided at one end, and an end gear 151a is also integrally provided at one end of the other support roller 31. Therefore, end gears 153a and 151
a rotates integrally with the respective support rollers 31, 31. Intermediate gear 15 meshes with both end gears 153a and 151a and is located between them.
2a is provided. The intermediate gear 152a is supported at a predetermined position on the intermediate shaft 152c via a bearing 152b. Therefore, for example, when a rotational driving force in a predetermined direction is applied to one of the support rollers 31, 31, via the intermediate gear 152a,
The pair of support rollers 31, 31 rotate in the same direction at a constant speed.

The left operating arm 1 is connected to the rotating shaft or shaft (not shown) of the end gear 153a via a bearing 153b.
55 is pivotally supported, and a bearing 151 is mounted on the rotating shaft or shaft (not shown) of the gear 151a at one end.
A right operating arm 154 is pivotally supported via b. Therefore, these left and right actuating arms 155
and 154 usually hang downward. A rotating shaft or shaft 158c is installed in the middle part of the left operating arm 155, and this shaft 1
58c is the lock gear 158 via the bearing 158b.
A is rotatably supported. In addition, lock gear 1
58a is disposed at a position where it always maintains a meshing state with the end gear 153a. On the other hand, a rotating shaft or shaft 157c is installed at a position approximately in the middle of the right operating arm 154, and this shaft 1
A lock gear 157a is mounted on a bearing 157b on 57c.
It is rotatably supported through. The lock gear 157a is disposed at a position where it is always in mesh with the end gear 151a.

The lock device 150 further includes a cylinder device 156.
The end of the cylinder device 156a is rotatably connected to the lower end of the right operating arm 154. The cylinder device 156a is a rod 156
This rod 156b can move forward and backward with respect to the cylinder device 156a, and its tip is rotatably connected to the lower end of the left operating arm 155.

Roller lock device 15 having the above configuration
To explain the operation of the cylinder 0, as shown in FIG.
When the lock gear 157 is protruded, the lock gear 157
a and 158a are respective corresponding end gears 151
It is engaged only with a and 153a, and does not perform a locking operation. Therefore, the state shown in FIG. 12 is an unlocked state, and in this state,
A pair of support rollers 31, 31 is an intermediate gear 152a
rotate in the same direction through. Cylinder device 1
56a to pull the rod 156b into the cylinder device 156a, the right operating arm 15
4 rotates clockwise, and the lock gear 157a engages both gears 151a and 15 below the meshing part between the end gear 151a and the intermediate gear 152a.
2a is in an engaged state. At the same time, the left actuating arm 155 is rotated counterclockwise, and the lock gear 158a is rotated between the end gear 153a and the intermediate gear 152a.
Both gears 153 on the lower side of the meshing part with
a and 152a. Therefore,
Since the respective lock gears 157a and 158a receive rotational forces in mutually opposite directions, they are prevented from rotating;
Support rollers 31, 31 are maintained in a non-rotatable state. In the configuration shown in FIG. 12, two lock gears 157a and 158a are provided, but in principle it is sufficient to provide only one of the lock gears.

Furthermore, it is also possible to connect the distal ends of the actuating arms 62f, 62b of the lock device 60 shown in FIG. 1 to the lower ends of the left and right actuating arms 154 and 155 shown in FIG. 12. Therefore, according to this configuration, the lock gear 157a is simply
and 158a at least one of the supporting rollers 31
End gear 151a or 153a provided integrally with
It is possible to simultaneously set the support rollers 31, 31 to a locked state and an unlocked state by bringing them into mesh with both the gear and intermediate gear 152a, or by disengaging them from meshing with both gears. be.

13 and 14 show a rotating wheel thrust absorber 160. FIG. The rotating wheel thrust absorbing device 160 is applied to the support roller assembly 30 in the wheel inspection device 10 shown in FIG. 1 as a specific example. As shown in FIGS. 13 and 14, the support roller assembly 30 has a generally U-shaped transverse cross section with a flat bottom portion 3.
2 and a pair of side walls 3 extending upright from both sides thereof.
2b and 32b. a pair of side walls 32b,
A pair of support rollers 31, 31 are arranged in parallel between 32b and rotatably supported, and the wheel 1 can be placed on these rollers 31, 31.

Arc-shaped open engagement holes 32a, 32a are bored at the front and rear ends of the bottom portion 32. Furthermore,
A cylinder device 34a is fixedly provided at a predetermined position, and a rod 34 is attached to the cylinder device 34a.
A rod 34b is provided to be movable forward and backward, and an engagement disc 33 is formed at the tip of the rod 34b. When the cylinder device 34a is operated and the rod 34b is projected from the cylinder device 34a, the engagement disc 33 at the tip of the rod 34b is engaged in the engagement hole 32a of the support roller assembly 30. Figures 13 and 14
The figure shows such an engaged state.
Although not shown in FIGS. 13 and 14 for the sake of simplicity, the support roller assembly 30 is provided movably in a horizontal plane. For example, the bottom part 32 is rotatably mounted on the upper rotating shaft 27 supported so as to be movable in the horizontal direction, or it is placed on a number of balls. Therefore, as shown in FIGS. 13 and 14, for example, when the engagement disk 33 is engaged in the engagement hole 32a, the support roller assembly 30 is rotated in a horizontal plane around the engagement. It is possible to rotate at .

As shown in FIGS. 13 and 14, when the wheels 1 placed on the support rollers 31, 31 are the wheels of a vehicle, a so-called inclination such as a toe angle is usually set. Therefore, initially, the support roller assembly 30 is located at a predetermined linear position (indicated by dotted lines in FIG. 13), and in this state, the wheel 1 is placed on the support rollers 31, 31. , the direction of the rotation axis of the wheel 1 is the support rollers 31, 31.
The rotational axes of the two are not parallel to each other but are inclined to each other.
Therefore, when the wheel 1 is rotated in this state, a thrust is generated between the wheel 1 and the support rollers 31, 31, and as a result, the support roller assembly 30 moves in the direction of arrow A with the engagement disc 33 as a rotation fulcrum. Rotate in the direction shown. The rotation axis of the support roller 31 is connected to the wheel 1.
When the support roller assembly 30 reaches a position parallel to the axis of rotation (the position shown by the solid line in FIG. 13), rotation in the direction of arrow A is stopped, and the support roller assembly 30 is maintained at that position. be done. That is, assuming that the initial position of the support roller assembly 30 shown by the dotted line is parallel to the center line CL of the inspection system,
The angle between the initial position and the equilibrium position shown by the solid line in FIG. ing. Therefore, by providing a detector that detects this rotation angle of the support roller assembly 30, it is possible to detect the toe angle of the wheel 1. That is, in the devices shown in FIGS. 13 and 14, the detection item (toe angle in this example) of the wheel is detected in a state where the thrust of the wheel 1 supported on the pair of support rollers 31, 31 is absorbed. It is possible to detect it. Note that this thrust absorption device is not limited to measuring only the toe angle, but more generally, when a rotating object such as a wheel comes into contact with a support roller, the rotation axis of the support roller is used to measure the rotation of the rotating object. It can be applied to align with the shaft and absorb thrust.

In the devices shown in FIGS. 13 and 14, engagement holes 32a and 32a are provided at both the front and rear ends of the bottom 32 of the support roller assembly 30, respectively. This engagement hole 32a
can be provided at either end. That is, the engagement hole 32a may be provided at the end of the wheel 1 in the forward direction with respect to the rotating direction. However, as mentioned above, in the case of a four-wheel drive vehicle, when measuring four wheels simultaneously, it is necessary to rotate the front, rear, left and right wheels in opposite directions, so in such cases In order to deal with this, engagement holes 32a are provided at both the front and rear ends of the bottom.
It is good to have a

Furthermore, the diameter of the engagement hole 32a is set larger than the diameter of the engagement disc 33 by a predetermined clearance. This clearance L is determined as the distance between the tip of the engagement disc 33 and the valley of the engagement hole 32a. It is defined as the sum of the forward movement from the start of rotation until reaching the equilibrium state. Like this,
Since the clearance L is set between the engagement disc 33 and the engagement hole 32a, application of unreasonable force to the support roller assembly 30 is avoided, and the support roller assembly 30 is It is possible to absorb thrust smoothly. Note that the engagement hole 32a does not need to be partially open, and may be formed as a complete hole in the bottom portion 32. In this case, an engagement pin that can be raised and lowered may be provided to engage and disengage the engagement hole. In this modification, there is a required clearance L between the engagement hole and the engagement pin.
It is good to set up

In the thrust absorbing devices shown in FIGS. 13 and 14, even if at least one of the pair of support rollers 31, 31 is driven and rotated, or the wheel 1
The wheels 1 may be driven and rotated by the engine of the vehicle in which the wheels are installed. Furthermore, when driving and rotating the support roller 31, the support roller 31
It is also possible to configure itself as part of a motor, or to transmit rotational force from an external motor via a belt or clutch.

Effects As detailed above, according to the present invention, there is provided a roller locking device that can accurately and quickly set a pair of rollers to a locked state or an unlocked state. Furthermore, the roller lock device of the present invention is simple and compact in construction and reliable in operation. Further, the roller lock device of the present invention is suitable for use as a roller lock device for rotatably supporting a wheel in a wheel inspection device from below. Therefore, by applying the present invention, it is possible to simplify the configuration of the wheel inspection device and downsize it as a whole.

Although specific embodiments of the present invention have been described in detail above, the present invention should not be limited only to these specific examples, and various modifications may be made without departing from the technical scope of the present invention. Of course, it is possible.

[Brief explanation of drawings]

FIG. 1 is a schematic exploded perspective view of a wheel inspection device 10 constructed based on an embodiment of the present invention, and FIG. 2 is a schematic exploded perspective view of a wheel inspection device 10 constructed based on an embodiment of the present invention, and FIG. FIG. 3 is an overall schematic diagram illustrating a wheel inspection system constructed according to another embodiment of the present invention that allows four wheels of a vehicle to be inspected simultaneously; FIG. 3 is the same as that shown in FIG. A schematic explanatory diagram showing the detection function of the wheel inspection system, Figure 4 is the first
FIG. 5a is a partial schematic explanatory diagram showing the connection state of the lower rotating shaft 41e of the wheel inspection device 10 shown in the figure, the rotating plate 52 that supports it, and the pantograph 54 connected thereto, and FIG. 5a is shown in FIG. Wheel inspection device 10 in FIG. 1 when viewed from the direction of the white arrow V
FIG. 5b is a schematic plan view of the structure of FIG. 5a, FIG. 5c is a schematic partial cross-sectional view of a portion of the structure of FIG. 5a, and FIGS. 1 is a schematic diagram useful for explaining the operation of the wheel inspection device 10 shown in FIG. FIG. 8b is an explanatory diagram showing in detail two different specific configurations of the support roller 31 used in the wheel inspection device 10 of FIG. 1, and FIG. FIG. 10 is a schematic diagram showing a configuration for measuring possible camber angles, and FIG. 10 shows a system in which a robot 101 corrects the mounting condition of each wheel based on the results of inspection by the wheel inspection device 10 of FIG. 11 is a schematic diagram showing a possible correction system for the wheel inspection device 10 of FIG. 1, which is capable of holding the support roller 31 of the wheel inspection device 10 of FIG. 1 in a locked and unlocked state, and is applicable to the wheel inspection device 10 of FIG. FIG. 12 is a schematic diagram showing a locking device that can lock or unlock two rollers at the same time, and can be applied to the wheel inspection device 10 of FIG. 1. 13 and 14 are schematic perspective views showing a locking device capable of Schematic diagrams showing possible rotating object thrust absorption devices, No. 15
The figure is a graph diagram showing a detection signal when measuring the amount of lateral runout of a wheel based on information from a sidewall on one side of the wheel. (Explanation of symbols), 10: Wheel inspection device, 11:
Frame, 12; Equalizer, 20: Floating table, 27: Upper rotation shaft, 30: Support roller assembly, 31: Support roller, 40: Lower support table, 41: Upper support table, 41e: Lower rotation shaft , 42: Pantograph mechanism, 47: Contact roller assembly, 52: Rotary table, 54: Pantograph, 56: Angle sensor, 60: Lock device, 7
0: Guide, 80: Processing/display device, 150: Roller lock device, 160: Thrust absorption device.

Claims (1)

[Scope of Claims] 1. A pair of rollers are rotatably supported while being spaced apart from each other by a predetermined distance, and a pair of end gears are integrally fixed to each of the pair of rollers, and the pair of end gears are integrally fixed to each of the pair of rollers. An intermediate gear is provided between the two end gears and meshes with each of the end gears, and between a lock position where one of the pair of end gears simultaneously meshes with the intermediate gear and an unlocked position separated from the lock position. 1. A roller lock device comprising: a lock gear that is movable; and position control means for controlling the position of the lock gear between the lock position and the non-lock position. 2. The roller lock device according to claim 1, further comprising a supporting means rotatably supporting the lock gear and freely rotatably supported around a predetermined rotation point. 3. The roller lock device according to claim 2, wherein the rotation point is a rotation axis of one of the pair of rollers. 4. In claim 3, a pair of said supporting means are provided, each supporting means is supported so as to be freely rotatable around the rotation axis of a corresponding roller, and said pair of supporting means is Each of the lock gears is rotatably supported, and a cylinder device is connected between the supporting means, and by operating the cylinder device, the pair of lock gears are connected to the pair of end gears. A roller lock device characterized in that the roller lock device is located at a lock position where the intermediate gear meshes with the intermediate gear at the same time and at a non-lock position that is separated from the lock position. 5. The roller lock device according to claim 4, wherein each of the pair of lock gears is always in mesh with a corresponding end gear. 6. In any one of claims 1 to 5, the pair of rollers is provided in a wheel inspection device of a vehicle, and a wheel to be inspected is rotatably placed thereon. A roller lock device characterized in that it is possible to