JP2003207312A - Rail wear inspecting vehicle for trolley conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rail wear inspecting vehicle for a trolley conveyor, which is capable of automatically and accurately locating the worn part on the uppersurface of a lower flange of a free rail and inspecting the degree of wear. <P>SOLUTION: The free rail 13 of the trolley conveyor is composed of a left and a right rail member 41 having a channel section and arranged so that their openings are facing each other. The rail wear inspecting vehicle is equipped with a body 401 having a left and a right running wheel 431 rolling on the uppersurfaces of the lower flanges 53 of the two rail members 41, a first 451 and a second light projector 452 installed on the body, and a first 461 and a second camera 462. The first light projector 451 projects a band of photo-beams onto the uppersurfaces of the lower flanges 53 of the two rail members 41 in such a way as traversing, and the first camera 461 receives the image of this band of photo-beams. The second light projector 452 projects a band of light beams onto the uppersurfaces of the so as to traverse lower flanges 53 of the two rail members 41, and the image of the band of photo- beams is received by the second camera 462. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a trolley conveyor used in a production line of a factory, and more particularly, in an overhead type trolley conveyor capable of effectively utilizing a space near a ceiling of a building, a wear state of a rail on which a trolley runs. The present invention relates to a rail wear inspection vehicle for inspecting.

[0002]

2. Description of the Related Art As an inspection vehicle of this type, for example, JP-A-6-221813 or JP-A-7-49220.
As disclosed in Japanese Patent Publication No. JP-A-2003-264, a vehicle body that travels along a rail, a projector and a camera mounted on the vehicle body, and an image processing unit that processes an image captured by the camera are provided. Projects a light band transversely on the surface to be inspected of the rail, the first camera photographs this light band, and the image processing means assumes that the surface to be inspected is not worn in the photographed image. Set the reference value based on the part,
It is known that a deviation from an actual image with respect to this reference value is obtained and the deviation is assumed to be the amount of wear.

[0003]

In the above conventional inspection vehicle,
It is difficult to accurately set the reference value due to the degree of spread of wear and the inclination of the image due to the swing of the vehicle body. In particular, if the image is tilted, it is necessary to set the reference value so as to correspond to it. However, if uneven wear occurs and the wear surface is tilted, it is difficult to distinguish whether the image is tilted. Furthermore, the wear surface is so wide that the reference value may not be set. Further, when the surface to be inspected faces upward, foreign matter such as dust and oil may drop and adhere to the surface to be inspected, and the step due to these foreign matter may be detected as wear.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a rail wear inspection vehicle for a trolley conveyor that can automatically and accurately inspect the wear site and the degree of wear. It is intended.

[0005]

In the rail wear inspection vehicle according to the present invention, a free rail is composed of a pair of left and right rail members having a U-shaped cross section, the openings facing each other,
Each rail member has a central web and upper and lower flanges, and on a lower flange upper surface of both rail members, a trolley conveyor configured such that a trolley runs across the lower flange upper surfaces of both rail members. The vehicle main body has left and right running wheels that roll, and the first and second projectors and the first and second cameras mounted on the vehicle main body. The first projector is a lower flange of both rail members. The light band is projected transversely on the upper surface, and the first camera receives the light band, and the second projector projects the light band transversely on the lower surfaces of the lower flanges of both rail members to project this light band. The second camera receives the image.

In the rail wear inspection vehicle according to the present invention, an image of the lower flange upper surface is created by the first light projector and the first camera, while an image of the lower flange lower surface is created by the second light projector and the second camera. . While the trolley travels, the upper surface of the lower flange will wear, but the lower surface of the lower flange will not wear.Therefore, if the reference value is set based on the image of the lower flange lower surface, It can be set accurately based on the part that actually exists, not from the original. Therefore, the wear of the upper surface of the lower flange can be automatically and accurately inspected. Further, if the images of the lower flanges of both rail members are simultaneously created on one screen, the distance between both lower flanges can be measured.

Further, a horizontal rocking body is attached to the vehicle body so as to be located between the lower flange front edge portions of both rail members, and a pair of horizontal rocking bodies are arranged so as to be positioned on both sides of the rocking center of the rocking body. The guide roller is attached to the rocker,
When the rocking body is biased by the elastic body so that both guide rollers come into contact with the edge portions of the lower flanges of both rail members, the vehicle body can be aligned with the center of the free rail in the width direction, and accuracy is improved. And more accurate inspection is guaranteed.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

In the following description, with reference to FIG. 1, the front and rear sides refer to the left side as the front (arrow A in FIG. 1) and the opposite side as the rear side. The left and right sides are called.

First, the outline of the trolley conveyor will be described.

Referring to FIG. 1, a power rail 11 extending forward, a power trolley 12 before and after traveling on the power rail 11, a free rail 13 extending below the power rail 11 in parallel therewith, and a free rail 13 The free trolley 14 is shown before and after driving over.

A drive chain 15 extends between the power rail 11 and the free rail 13, and a power trolley 12 is connected to the drive chain 15. The drive chain 15 has a front power trolley.
A drive claw 16 is provided so as to be adjacent to 12 and project downward. The front free trolley 14 is provided with a dog 17 that is engaged with and disengageable from the drive pawl 16. A load bar 18 is passed to the front and rear free trolleys 14.

Referring to FIG. 3, the power rail 11 is constituted by a rail member 21 having an I-shaped cross section. The rail member 21 has a vertical central web 31 and horizontal upper and lower flanges 32 and 33. The upper surface of the upper flange 32 and the lower surface of the lower flange 33 are both horizontal. On the other hand, the lower surface of the upper flange 32 and the upper surface of the lower flange 33 are inclined so that the thickness decreases toward both edges.

Each power trolley 12 has left and right rollers 34 that roll on both the left and right sides of the flange on the upper surface of the lower flange 33.

Referring to FIG. 13, the free rail 13 is
It is composed of a pair of left and right rail members 41 having a U-shaped cross section and facing each other. Each rail member 41 has a vertical central web 51 and horizontal upper and lower flanges 52, 53. Similar to the power rail 11, the upper flange 52 upper surface and the lower flange 53 lower surface are both horizontal, but the upper flange 52 lower surface and the lower flange 53 upper surface are inclined.

Each free trolley 14 travels while straddling the upper surfaces of the lower flanges 53 of both rail members 41, and the left and right rollers 54 rolling on the upper surfaces of the lower flanges 53 of both rail members 41, respectively.
have.

Next, the rail wear inspection device will be described in detail below.

Referring again to FIG. 1, the power rail 11
The first to third inspection vehicles 61 to 63 are sequentially mounted from the front to the rear, and the fourth inspection vehicle 64 is mounted on the fleet trolley 14. A control panel 65 is mounted on the load bar 18. Although not shown, the control panel 65 includes a personal computer, a battery, an amplifier and the like. The first to fourth inspection vehicles 61 to 64 and the control panel 65 are electrically connected.

The rear power trolley 12 and the first inspection vehicle 61 have the first connecting rod 71, the first inspection vehicle 61 and the second inspection vehicle 62 have the second connecting rod 72, the second inspection vehicle 62 and the third inspection vehicle 62. 63
The third connecting rods 73 are respectively passed over. Thereby, while being pulled by the rear power trolley 12,
The third inspection vehicles 61 to 63 are arranged in a line so that they can be driven forward. In this state, the first to third inspection vehicles 61
Each of ~ 63 can freely swing up and down. In addition, front free trolley 14 and fourth inspection vehicle 64
A fourth connecting rod 74 is passed over the. The fourth inspection vehicle 64 can also swing up and down.

The first inspection vehicle 61 is shown in detail in FIGS.

The first inspection vehicle 61 has a vehicle body 101. The vehicle body 101 includes a pair of left and right vertical side plates 111 that are opposed to each other with a portion from the lower portion of the web 31 of the power rail 11 to the lower flange 33 sandwiched therebetween, and below both side plates 111 that are hidden below the lower flange 33. A pair of front and rear spacer bars 112 are provided at both front and rear ends of the edge portion.

A pair of left and right front running wheels 121 are attached to the opposite surfaces of the side plates 111 so as to be located substantially right above both left and right ends of the front spacer bar 112, and substantially right above both left and right ends of the rear spacer bar 112. A pair of left and right rear running wheels 121 are attached to the opposite surfaces of both side plates 111 so as to be located at. Of these front-rear traveling wheels 121, the left front-rear traveling wheel 121 is placed on the left side of the flange on the upper surface of the lower flange 33, and the right traveling wheel 121 is placed on the right side of the upper surface of the lower flange 33.

A pair of left and right horizontal front guide rollers 122 are attached to both side plates 111 so as to be positioned diagonally rearward and downward of both front traveling wheels 121, and are positioned diagonally forward and downward of both rear traveling wheels 121. A pair of left and right horizontal rear guide rollers 122 are attached to both side plates 111. The front and rear guide rollers 122 forming the pair sandwich the tip edge portion of the lower flange 33, respectively.

Two longitudinally elongated hole-shaped guide holes 123 are formed vertically in the center of each side plate 111 in the front-rear direction.

A pair of vertical rectangular vertical plate-shaped vertical moving bodies 131 on the left and right sides are slidably contacted with each other in the front-rear center portion of the facing surfaces of the side plates 111 so as to cover the guide holes 123 from the inside. Two vertical guide pins 132, 1 are provided on each vertical moving body 131.
33 is provided so as to project outward, and these guide pins 132 and 133 are penetrated into the guide holes 123 of the side plates 111 on the left and right corresponding sides. Hexagonal flanges 134 and 135 are provided at the protruding end of each guide pin 132 so as to straddle both edges of the corresponding guide hole 123.
An annular groove 136 is formed on the outer peripheral surface of the upper flange 134 of the upper and lower flanges 134, 135.

The side plate 1 is positioned so as to be located above and above the upper flange 134 with the upper flange 134 interposed therebetween.
11 Front and rear spring hooks 137 are provided on the outer surface. A spring rod 138 that is applied to the outer surface of each side plate 111 and extends in the front-rear direction.
The center of the length of the spring rod 138 is fitted into the annular groove 136 from the lower side so as to form an arch that bulges downward, and both ends of the spring rod 138 are hooked from the upper side to the front and rear spring hooks 137, respectively. It has been stopped. This allows vertical movement
131 is biased upward.

A pair of left and right vertical reference rollers 141 are attached to the lower end portions of the opposing surfaces of the left and right vertical moving bodies 131. Both reference rollers 141 are in contact with the left and right edges of the lower surface of the lower flange 33, respectively. In this state, the pair of left and right displacement sensors 142 are attached downward to the facing surface of the vertical moving body 131 via the bracket 143 so as to face both the left and right edges of the upper surface of the lower flange 33 at regular intervals.

The displacement sensor 142 is a non-contact magnetic proximity sensor, and is inclined with respect to a vertical line so that its reference axis is orthogonal to the upper surface of the inclined lower flange 33. The displacement sensor 142 detects the distance from the sensor 142 to the upper surface of the lower flange 33.

When the power trolley 12 runs, the lower flange
The upper surface of 33 is worn, but the lower surface of the lower flange 33 is not worn.

Power trolley 12
At the same time, the first inspection vehicle 61 is moved. During this movement, the reference roller 141 is held in contact with the lower surface of the lower flange 33. As a result, the distance from the lower surface of the lower flange 33 to the sensor 142 is always kept constant.
When the upper surface of the lower flange 33 is not worn, the distance from the upper surface of the lower flange 33 to the sensor 142 is a known set value. When the upper surface of the lower flange 33 is abraded and the distance from the upper surface of the lower flange 33 to the sensor 142 is detected by the sensor 142, the value obtained by subtracting the set value from the detected value is the amount of wear.

The second inspection vehicle 62 is shown in detail in FIGS. The second inspection vehicle 62 has a structure similar to that of the first inspection vehicle 61. Below, the first inspection vehicle 61 and the second inspection vehicle
Only the 62 differences will be described. 5 to 7, in FIG.
The parts corresponding to those shown in FIG. 4 are designated by the same reference numerals.

The sensor 142 of the first inspection vehicle 61 is the lower flange 3
3 It is facing the upper surface, but the sensor 1 of the second inspection vehicle 62
42 is attached to the vertical moving body 131 so as to face the lower surface of the upper flange 32.

A further difference is that a pair of front and rear vertical protection rollers 25 are placed so as to be positioned in front of and behind the sensor 142.
1 is attached to each vertical moving body 131. The protective roller 251 is opposed to the lower surface of the upper flange 32 with an extremely small distance therebetween. The sensor 142 is retracted a short distance ε below the level connecting the upper ends of the front and rear protective rollers 251.

By the reference roller 141, the distance from the lower surface of the lower flange 33 to the sensor 142 of the second inspection vehicle 62 is always kept constant. In the second inspection vehicle 62, the amount of wear on the lower surface of the upper flange 32 is detected in the same manner as in the case of the first inspection vehicle 61.

A reinforcing plate (not shown) on the lower surface of the lower flange 32
May be attached. When the second inspection vehicle 62 approaches the reinforcing plate when the second inspection vehicle 62 is running,
When the protective roller 251 contacts the reinforcing plate, the reinforcing plate pushes down the protective roller 251. As a result, the vertical moving body 131
By being lowered together with 142, the sensor 142 is prevented from colliding with the reinforcing plate.

8 to 11 show the third inspection vehicle 63 in detail.

The third inspection vehicle 63 has a vehicle body 301. The car body 301 has a pair of left and right vertical side plates 311 as in the first inspection car 61. In the first inspection car 61, the front and rear spacer bars 112 are passed to the front and rear ends of the lower edges of both side plates 111. The front and rear spacer bars 312 are passed over. As will be described later, these spacer bars 312 also serve as guide rods.

A pair of front and rear running wheels 321 and guide rollers 322 attached to each side plate 311 is the same as that of the first inspection vehicle 61. In addition to this, the third inspection vehicle 63 is provided with a pair of right and left vertical front and rear jump prevention rollers 323. Anti-jump roller 323
Are opposed to the left and right edges of the lower surface of the lower flange 33 with a slight gap. A circular spring hole 324 is formed in the center of each side plate 311.

In the third inspection vehicle 63, the first inspection vehicle 61
Instead of the vertical moving body 131, the vehicle body 301 is equipped with a horizontal moving body 331.

The left-right moving body 331 is composed of a left half body 331A and a right half body 331B slidably supported by front and rear spacer bars 312, respectively.

On the right side surface of the left half 331A, there is a right contact surface 331a.
And a left-side contact surface 331b is provided on the left side surface of the right half 331B (FIG. 11).

The lower end of the vertical wall of the inverted L-shaped left bracket 332 is fixed to the left side surface of the left half 331A. A horizontal reference roller 341 is attached to the horizontal wall of the left bracket 332. The lower end portion of the vertical wall of the inverted L-shaped right bracket 333 is fixed to the right side surface of the right half body 331B. At the tip of the horizontal wall of the right bracket 333, a hanging wall 334 is provided, on which the sensor 3
42 is attached to the left. A pair of front and rear horizontal protective rollers 351 are mounted on the horizontal wall of the right bracket 333 on both sides of the sensor 142 with the sensor 142 interposed therebetween.

A left spring pressing plate 361 is attached to the outer surface of the opening edge of the spring hole 324 so as to cover the spring hole 324 of the left side plate 311. A left compression spring 362 is interposed in the middle of the height of the left spring push plate 361 and the left bracket 332 vertical wall so as to pass through the spring hole 324. A right spring pressing plate 363 is attached to the outer surface of the opening edge of the spring hole 324 of the right side plate 311. A right compression spring 364 is interposed in the spring hole 324 in the middle of the height between the right spring pressing plate 363 and the right bracket 333 vertical wall.

The elastic force of the left compression spring 362 is equal to that of the right compression spring 364.
It is set to be larger than the elastic force of. Both springs 362,
The left-right moving body 331 is urged rightward as a whole by the elastic force of the elastic force of 364 subtracted. In this state, the contact surfaces 331a and 331b of the left half body 331A and the right half body 331B are in contact with each other. In addition, the reference roller 341
Is brought into contact with the left side surface of the web 31, and the sensor 342 is opposed to the right side surface of the web 31 at a constant interval.

Similar to the case of the second inspection vehicle 62, the sensor 342 is retracted to the right by a slight distance ε from the straight line connecting the left ends of the two protection rollers 351.

Wear may occur on both the left and right side surfaces of the web 31. Regardless of whether the left side surface of the web 32 is worn or not, the reference roller 341 is always kept in contact with the left side surface of the web 31. If there is no wear on both the left and right sides of the web 31,
The distance from the left side surface of the web 31 to the sensor 342 is a known set value. The distance from the right side surface of the web 31 to the sensor 342 is detected by the sensor 342. A value obtained by subtracting the set value from the detected value is a value in which the wear amounts of the left and right side surfaces of the web 31 are combined.

When a reinforcing plate or the like is attached to the right side surface of the web 31, the protective roller 351 goes over the reinforcing plate or the like. At this time, the reference roller 341 remains in contact with the left side surface of the web 31 and the left half body 331A cannot be moved, but only the right half body 331B is moved to the right. This prevents the sensor 342 from colliding with the reinforcing plate or the like, as in the case of the second inspection vehicle 62. Also the web
When a reinforcement plate or the like is attached to the left side surface of 31, the reference roller 341 moves leftward together with the left half 331A, so that the reference roller 341 gets over the reinforcement plate.

The fourth inspection vehicle 64 has a vehicle body 401, as shown in FIGS. The car body 401 is the upper body 41
1 and a lower body 412, and a spacer 413 interposed in the central portion between the upper body 411 and the lower body 412.

The upper body 411 has a substantially U-shaped cross section,
It consists of a pair of left and right upper side walls 421 and a bottom wall 422. Lower body
Reference numeral 412 has a substantially U-shaped cross section, and is composed of a pair of left and right lower side walls 423 and a top wall 424. The spacer 413 is in the shape of a rectangular parallelepiped block, and is located between the leading edge portions of the lower flange 53 of the free rail 13. As a result, the upper body 41
1 is housed in the free rail 13, and the lower body 412 is projected below the free rail 13.

A pair of left and right front running wheels 431 are attached to the front end portions of both upper side wall 421 facing surfaces, and a pair of left and right rear running wheels 431 are attached to the rear end portions of both upper side wall 421 facing surfaces. These running wheels 431 are mounted on the upper surface of the lower flange 53. Further, of the front and rear traveling wheels 431, the axles of the left and right front traveling wheels 431 are integrated. Furthermore, a pair of left and right front jump prevention rollers 432 are positioned so as to be located directly above both front traveling wheels 431, and a pair of left and right rear jump prevention rollers 432 are so positioned as directly above both rear traveling wheels 431. Both upper side walls 421
Each is attached to the opposite surface. These jump prevention rollers 432 are opposed to the lower surface of the upper flange 52 with a slight distance therebetween.

A front and rear horizontal rocking body is interposed between the upper body 411 and the lower body 412 so as to be positioned in front of and behind the spacer 413.
441 is interposed. As shown in detail in FIG. 15, the front horizontal rocking body 441 is like a pair of arms extending in opposite directions from the rocking center.
A pair of front guide rollers 442 are attached to both ends of the front horizontal rocking body 441. The front horizontal rocking body 441 is biased by a front torsion spring 443 so as to rock in the clockwise direction in FIG. Although the rear horizontal oscillating body 441 is not shown in detail, it is also provided with a pair of rear guide rollers 442 and a rear torsion spring 443, like the front horizontal oscillating body 441.

Like the spacer 413, the front and rear horizontal rocking bodies 441 are located between the front edge portions of the lower flange 53. In this state, the front and rear guide rollers 442 are pressed against the facing surfaces of the leading edge of the lower flange 53. This allows
The front and rear horizontal oscillating bodies 441 urge the vehicle body 401 so that it is positioned at the center of the free rail 13 in the width direction.

The first light projector 451 is provided between the front ends of the upper side walls 421.
Is mounted horizontally backwards. A second light projector 452 is mounted between the front ends of both lower side walls 423 so as to be positioned just above and below the first light projector 451 with the lower flange 53 interposed therebetween. A first camera 461 is mounted horizontally forward between the rear ends of both upper side walls 421 so that the level is slightly lower than that of the first light projector 451. As with the second projector 452, a second camera 462 is mounted between the rear ends of both lower side walls 423 so as to be positioned just upside down with respect to the first camera 461.

A first mirror 471 is located on the optical axis of the first projector 451.
Are arranged. The first mirror 471 has its reflecting surface directed obliquely forward and downward at an angle of 45 ° with respect to the horizontal line. On the optical axis of the second projector 452, the second mirror 472 is the first
The mirror 471 is arranged so as to be tilted in the opposite direction. A third mirror 473 is arranged on the imaging axis of the first camera 461. The reflecting surface of the third mirror 473 is inclined at an angle smaller than 45 ° with respect to the horizontal line and faces obliquely rearward and downward. The tilt angle of the third mirror 473 will be described later. Similarly, the fourth axis is on the imaging axis of the second camera 462.
The mirror 474 is arranged so as to be tilted in the opposite direction to the second mirror 472.

From the first and second projectors 471 and 472, a laser beam is projected which is straight when viewed from the side but spreads at a predetermined angle α (FIG. 14) when viewed from the plane. The light beam projected rearward from the first light projector 471 is reflected by the first mirror 471, its direction is changed vertically downward, and irradiates the upper surface of the lower flange 53. As a result, a transverse light band appears on the upper surface of the lower flange 53. Second
The light beam projected rearward from the projector 472 is reflected by the second mirror 4
It is reflected by 72 and turned vertically upwards to illuminate the lower surface of the lower flange 53. As a result, a transverse light band appears on the lower surface of the lower flange 53.

The transverse light band on the upper surface of the lower flange 53 is received by the first camera 461. Therefore, the angle of the third mirror 473 is set so that the incident angle from the same light band and the reflection angle to the first camera 461 are equal. On the other hand, the transverse light band on the lower surface of the lower flange 53 is received by the second camera 462. To make this possible, the third mirror 473
According to the above, the angle of the fourth mirror 474 is set. The shooting angle β by the first and second cameras 461 and 462 is shown in FIG.
Is shown in.

A registration mark 481 is displayed on a part of the right front running wheel 431 in the circumferential direction of the inner surface. A photo sensor 482 is arranged inside the front running wheel 431 so as to detect this.

As the free trolley 14 travels on the free rail 13, only the upper surface of the lower flange 53 of the free rail 13 is worn. Of course, since the lower surface of the lower flange 53 does not wear, the image of the optical band received by the second camera 462 does not change and always displays a constant shape, position, and the like. On the other hand, due to the wear generated on the upper surface of the lower flange 53, the image of the optical band received by the second camera 462 changes variously.
The light band images received by the first and second cameras 461 and 462 are input to a personal computer and variously image-processed. Based on the image of the second camera 462 that does not change, the second camera 4
The distance from the image of 62 to the image of the first camera 461, that is, the thickness of the lower flange 53 can be calculated. It is also possible to back-calculate the wear amount from known data when the lower flange 53 is not worn, based on the calculated thickness. Furthermore, by performing image processing so that the images of the first and second cameras 461 and 462 are combined, the lower flange
It is also possible to display 53 in cross section.

Even if the lower flange 53 itself is deformed, the deformation can be detected, and at the same time, the wear amount can be detected regardless of the deformation.

The photosensors 482 can detect the number of rotations of the front running wheels 431 in the forward and reverse directions, respectively. Even if the front running wheel 431 slips based on the detection signal of the photo sensor 482, the fourth inspection vehicle is corrected while correcting the slip.
The amount of movement from the 63 reference position is detected. These data are input to the personal computer. By inputting the above-mentioned wear amount in real time to the personal computer, the wear portion and the wear degree are automatically grasped.

[0061]

According to the present invention, in particular, it is possible to automatically and accurately inspect the location and degree of wear on the upper surface of the lower flange of the free rail.

[Brief description of drawings]

FIG. 1 is a side view of a trolley conveyor provided with a rail wear inspection device according to the present invention.

FIG. 2 is a side view of a first inspection vehicle that constitutes the inspection apparatus.

FIG. 3 is a transverse sectional view taken along line III-III of FIG.

FIG. 4 is a cross-sectional view perpendicular to the line IV-IV.

FIG. 5 is a side view of a second inspection vehicle that constitutes the inspection apparatus.

6 is a transverse cross sectional view taken along line VI-VI of FIG.

FIG. 7 is a transverse sectional view taken along line VII-VII.

FIG. 8 is a side view of a third inspection vehicle that constitutes the inspection apparatus.

9 is a transverse sectional view taken along line IX-IX in FIG.

FIG. 10 is a transverse cross-sectional view taken along the line X-X.

FIG. 11 is a horizontal vertical sectional view taken along the line XI-XI.

FIG. 12 is a vertical vertical sectional view of a fourth inspection vehicle that constitutes the same inspection device.

13 is a transverse sectional view taken along line XIII-XIII in FIG.

FIG. 14 is a transverse cross sectional view taken along line XIV-XIV in FIG.

FIG. 15 is a horizontal vertical sectional view taken along line XV-XV.

[Explanation of symbols]

13 Free rail 14 Free Trolley 41 Rail member 51 Web 52 Upper flange 53 Lower flange 401 car body 432 running wheels 441 Guide roller 443 spring 451 1st floodlight 452 Second floodlight 461 first camera 462 second camera

Continued front page    F term (reference) 2F065 AA30 AA63 AA65 BB11 CC35                       FF04 FF67 JJ03 LL12 MM14                       MM24 PP02 PP22 QQ24 QQ31                 2F069 AA24 BB25 DD13 DD16 GG06                       GG07 GG73 HH09

Claims (2)

[Claims] 1. The free rail 13 is composed of a pair of left and right U-shaped cross-section rail members 41 facing each other, and each rail member 41 has a central web 51 and upper and lower flanges 52, 53. In the trolley conveyor in which the trolley 14 travels across the upper surfaces of the lower flanges 33 of both rail members 41, the left and right traveling wheels 431 rolling on the upper surfaces of the lower flanges 53 of both rail members 41 are provided. The car body 401, the first and second projectors 451 and 452, and the first light projectors that are mounted on the car body 401
And a second camera 461, 462, and the first projector 4
51 projects a light band across the upper surface of the lower flange 53 of both rail members 41, and the first camera 461 receives this light band, and the second projector 452 causes the lower flange 53 of both rail members 41 to project.
The light band is projected transversely on the lower surface, and this light band is projected by the second camera.
Rail wear inspection car designed to receive images from the 462. 2. A horizontal rocking body 441 is attached to a car body 401 so as to be located between lower edge 53 of lower flanges 53 of both rail members 41, and is positioned on both sides of the rocking center of the rocking body 441, respectively. So that the pair of guide rollers 442 are attached to the rocking body 441, and the rocking body 441 is attached to the elastic body 4 so that both the guide rollers 442 come into contact with the leading edge portions of the lower flanges 53 of the rail members 41.
A rail wear inspection vehicle urged by 43.