JPH0120395Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a track work vehicle used for high-altitude work on tracks such as overhead lines of tracks or ceilings and side walls of subway tunnels.

Track work vehicles are generally equipped with a lifting device on a bogie that can run on the track, and use this lifting device to raise and lower the work platform to perform work at high places. On curved sections, it is necessary to adjust the slope of the workbench to keep it level.
There is also a need to prevent falls during work, and conventionally an outrigger system has been adopted as a means for this purpose. In other words, support arms are extended on both sides of the trolley,
The level of the truck is maintained by adjusting the height of the tip of each support arm. However, when an outrigger system is used for a track work vehicle, there is a risk that one wheel or all wheels will lift up when adjusting the inclination, and that if the subsequent operation is incorrect, it may derail. This has the disadvantage that the outriggers may not be able to fully extend depending on the structure of the track, such as inside a tunnel or on a single track section.

The present invention was developed in view of the above-mentioned drawbacks, and includes a lifting device mounting base that is swingably disposed on a trolley and supports the lifting device, and an extendable and retractable base that swings to adjust the inclination of the workbench. By providing a cant correction device comprising means, a track work vehicle is provided which can easily maintain the horizontality of a work platform at a track curved section where there is a cant.

Hereinafter, the present invention will be explained based on illustrated embodiments. In FIGS. 1 and 2, reference numeral 1 denotes a truck provided with a pair of front and rear wheels 4 for running on rails 3 on the underside of a frame 2. Reference numeral 5 denotes a rail clamp device provided on the front, rear, left, and right rails 3 on the lower surface of the truck 1. The truck 1 is fixed to the rail 3 and released by opening and closing the clamp device 5.

Reference numeral 6 denotes an elevating device, which is composed of a pantograph-type support placed on the trolley 1, and is adapted to move the work platform 8 up and down through the expansion and contraction of a hydraulic cylinder 7. The workbench 8 has a slide table 9 that can be extended to the left or right depending on the purpose of work.
is provided.

Reference numeral 10 denotes a lifting device mounting base for mounting the lifting device 6 on the truck 1. This base 10 has a fulcrum shaft 11 disposed in the longitudinal direction of the track, that is, in the front-rear direction of the bogie 1, at the center of the lower surface.
It is supported on the trolley 1 so as to be swingable. Reference numeral 12 denotes a pair of hydraulic cylinders, and the cylinders 12 are connected to the base 10 at the upper end and to the base 1 at the lower end through pins 13 and 14, respectively, near either the left or right end of the cart 1 and the base 10. Fixed. Therefore, by expanding and contracting the cylinder 12, the base 10 can be swung in the left-right direction. The cant correction device 15, which consists of a swingable base 10 and a hydraulic cylinder 12 serving as an extensible means, uses a holding member 16 erected on the trolley 1, except when adjusting the inclination of the base 10 during work.
It is fixed by inserting a removable fixing pin 17 into it. The hydraulic cylinder 7 that operates the lifting device 6 and the hydraulic cylinder 12 that swings the base 10 are both operated by a hydraulic unit 18 provided on the truck 1.

The track work vehicle having the above configuration is transported to a work site with the base 10 of the cant correction device 15 and the frame 2 of the truck 1 fixed in parallel positions by the holding member 16. At the work site, trolley 1
is fixed to the rail 3 by the rail clamp device 5, and in the case of a track curved section with cant,
Remove the fixing pin 17 and remove the base 10 and support member 1.
6 is disengaged, the hydraulic cylinder 12 of the cant correction device 15 is operated to adjust the base 10 to be horizontal, thereby keeping the workbench 8 horizontal.
At this time, the horizontality of the base 10 is adjusted using a level 19 provided on the side surface of the base 10.

In this way, by fixing the work vehicle to the rail 3 with the clamp device 5 and then correcting the inclination with the cant correction device 15, accidents such as derailment and overturning can be prevented even at work points where there is cant on track curves. You can keep your workbench level without fear.
Further, cant can be easily corrected even in places where it is difficult to extend outriggers, such as in subway tunnels.

It is to be noted that the expansion and contraction means of the cant correction device 15 is not limited to the hydraulic cylinder 11, and any conventionally known means such as a screw jack can of course be used.

As described above, in the present invention, the lifting device mounting base is swingably mounted on the trolley equipped with track wheels via a support shaft extending in the front and back direction of the trolley, and An elevating device is provided to support the workbench so that it can be raised and lowered, and an extensible means such as a cylinder device whose upper and lower portions are pivotally supported on both sides of the support shaft is provided between the cart and the base. However, since this telescoping means and the base that is swung by the telescoping means constitute a cant correction device that adjusts the inclination of the workbench, there is no need to extend the outriggers as in the past, and it is possible to avoid pinching. Even in a curved area such as a tunnel, the cant amount of the curved area where the cart is located can be corrected by simply operating the telescopic means on one side, thereby making it possible to easily adjust and maintain the levelness of the workbench.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention,
FIG. 1 is a front view, and FIG. 2 is a side view. 1... Trolley, 6... Lifting device, 8... Workbench,
10... Lifting device mounting base, 12... Expanding means,
15... Cant correction device.

Claims (1)

[Scope of utility model registration request] A lifting device mounting base is swingably mounted on a trolley equipped with track wheels via a support shaft extending in the front-rear direction, and a lifting device is mounted on this base to support a work platform so that it can be raised and lowered. A telescopic means such as a cylinder device whose upper and lower portions are pivotally supported by both of them is disposed on the side of the support shaft between the trolley and the base, and the telescopic means and the base are pivoted by the telescopic means. A track work vehicle characterized in that a cant correction device for adjusting the inclination of the workbench is configured by the base and the base.