JPS6224564B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a system for locking the traveling position of a traveling vehicle mounted on a construction such as a bridge, railway, building, etc., in order to carry workers for inspection, repair, cleaning, etc. of the construction. Regarding equipment.

SUMMARY OF THE INVENTION An object of the present invention is to provide a traveling position locking device for a traveling vehicle that can reliably lock the traveling vehicle at a desired traveling position and perform work safely. In the configuration in which the vehicle is supported so that the vehicle can run freely, a guide rail is laid in the construction along the traveling direction of the vehicle, and a support plate is horizontally attached to a support that is supported by the vehicle through a parallel link mechanism. A fixed guide roller rotatably supported by the support plate is engaged with the guide rail, and a lock cam rotatably supported by the support plate is opposed to the guide rail surface so as to be movable toward and away from the guide rail surface, The lock cam is rotatably driven by a power cylinder or the like at the tip of a lever extending horizontally from the lock cam.

Below is an inspection installed on the bridge girder of a railway bridge so that it can run freely.
Embodiments of the present invention will be described with reference to drawings implemented on a repair vehicle.

In FIGS. 1 and 2, a vehicle 1 has a U-shaped vehicle body with vertical portions 3, 3 extending at right angles from both left and right ends of a horizontal portion 2 of the vehicle body.
The vertical parts 3, 3 are arranged on the left and right sides of the bridge girder A, and the horizontal part 2 is located below the bridge girder A, and in this state, the lower surface of the bridge girder The drive wheels provided on the horizontal section 2 of the vehicle are engaged with the running rails 4, 4, which have an I-shaped cross section and are laid along the road, so that the entire vehicle 1 can be suspended freely, and the bridge girder The running position locking device of the present invention is installed on groove-shaped guide rails 5, 5 having a U-shaped cross section, which are laid along the longitudinal direction of the bridge girder on both the left and right sides of A.

The driving position locking device is as follows. The groove-shaped guide rails 5, 5 are fixed to the lower surface of a short beam 6 horizontally protruding from the side surface of the bridge girder A, with the groove opening facing downward, as shown in the third and fifth figures.

On the other hand, a third,
4, 5 As shown in the figure, two columns 8, 8 are vertically supported via a parallel link mechanism 7, and a support plate 9 is horizontally fixed to the upper ends of both columns 8, 8, and the upper surface of the support plate 9 is On a line parallel to the guide rail 5, the guide rollers 10, 10 are rotatably supported by horizontal shafts 12, 12 by brackets 11, 11 fixed to both ends of the support plate 9, and Between the rollers 10, 10, another guide roller 13, 13 is rotatably supported on shafts 14, 14 supported perpendicularly to the support plate 9, and further, between the rollers 10, 13, 10, 13, the major axis is Approximately elliptical lock cams 15, 15 larger than the width of the guide rail 5 are rotatably supported on shafts 16, 16 supported perpendicularly to the support plate 9, and these rollers 10, 10, 13, 13 and the lock cams are rotatably supported. 15, 15 to the above grooved guide rail 5
Vertical part 3 of the vehicle is inserted from below into the groove of
and the coil spring 1 connected diagonally between the pillars 8 and 8.
The support plate 9 is constantly pulled upward by the rollers 7 and 17, and the roller surfaces of the rollers 10 and 10 are brought into contact with the inner bottom surface of the groove-shaped guide rail 5, and the roller surfaces of the other rollers 13 and 13 and the lock cam are brought into contact with the inner bottom surface of the grooved guide rail 5. 1
The cam surfaces 5 and 15 are opposed to the inner surface of the groove-shaped guide rail 5 to prevent the wheels from coming off.

As a driving means for the lock cams 15, 15,
Levers 18, 18 extend horizontally from the lower part of the lock cam, and rams 20, 20 extend from both ends of the power cylinder 19 at the tips of both levers 18, 18.
The lock cams 15 and 15 are connected to each other via the levers 18 and 18 by moving the rams 20 and 20 forward and backward synchronously by driving the power cylinder 19.
15 is rotated by an appropriate angle so that its cam surface is brought into pressure contact with the inner surface of the guide rail 5. In this case, the power cylinder 19 is
The ends of the rams 20, 20 are connected and supported by levers 18, 18 extending from the rams 5, 15,
It may be supported by the support plate 9.

The parallel link mechanism 7 buffers the vibration impact of the traveling vehicle 1, and the guide rollers 10, 10, 13,
13 and lock cams 15, 15 and guide rail 5
This is to maintain the engagement positional relationship with the third
As shown in the figure, links 23 of the same length are attached to brackets 21 and 22 fixed vertically to the side surface of the vertical portion 3 of the vehicle.
24 are rotatably connected to each other by shafts 25 and 26, and the links 23,
One end of links 27 and 28 having the same length as 24 is connected to shafts 29 and 3 at the same distance as that of the brackets 21 and 22.
0, and the other ends of the links 23, 27 and the other ends of the links 24, 28 are connected to the intermediate link 29 by shafts 30, 31 at the same spacing as the shaft spacing of the brackets 21, 22. The vertical part 3, the links 23, 24 and the intermediate link 29 thereby form a parallelogram, and the struts 8, the links 27, 28 and the intermediate link 29 form another parallelogram connected to the parallelogram. ing.

32 is a shock damper formed by connecting two dash pots 33, 33 in a straight line, and the ram 3
4 and 34 are connected to the vehicle vertical portion 3 and the support column 8.

The operation of the locking device described above will now be explained. A traveling vehicle 1 is made to travel along traveling rails 4, 4 and stopped at a desired position. Therefore, when the rams 20, 20 are moved backward by driving the power cylinder 19,
Lock cams 15, 15 via levers 18, 18
rotates and presses the cam surface of its long diameter portion against the inner surface of the groove-shaped guide rail 5, whereby the traveling vehicle 1 is locked in that position via the support plate 9 and the parallel link mechanism 7, so that it cannot run. becomes.

According to the traveling position locking device for a traveling vehicle of the present invention, after the traveling vehicle is driven to a desired position, the lock cam is rotated by the driving means to press the lock cam against the guide rail surface, and the traveling vehicle is moved to that position. The vehicle can be locked so that it cannot be driven, allowing workers in the vehicle to inspect and inspect the structure.
Work such as repair and cleaning can be performed safely.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of a traveling vehicle mounted on a bridge girder, FIG. 2 is a side view of the same, FIG. 3 is an enlarged front view of the traveling position locking device, and FIG. 4 is a partially omitted cross-sectional view of the - line in Fig. 3;
FIG. 5 is a partially cutaway sectional view taken along the line -- in FIG. 3. A... Bridge girder, 1... Running vehicle, 5... Guide rail, 10, 13... Guide roller, 15... Lock cam, 19... Power cylinder.

Claims (1)

[Scope of Claims] 1. In a structure in which a traveling vehicle is supported in a freely traveling manner by a construction, a guide rail along the traveling direction of the traveling vehicle is laid in the construction, and a parallel link mechanism is provided to the traveling vehicle. A support plate is horizontally fixed to a column supported by the support plate, a guide roller rotatably supported by the support plate is engaged with the guide rail, and a lock cam rotatably supported by the support plate is fixed to the guide rail. A running position locking device for a running vehicle, which is arranged to face a rail surface so as to be able to move toward and away from the rail surface, and is equipped with a driving means such as a power cylinder for rotating the lock cam at the tip of a lever extending horizontally from the lock cam.