JPS6340053Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bogie jack up device used for replacing running tires on a monorail vehicle.

Conventionally, as shown in FIG. 1, a truck B was hoisted up by an overhead crane A, and the running tires C were floated in order to change the tires. As described above, since an overhead crane is used for tire changing work, the H dimension shown in FIG. 1 becomes large due to the installation of the crane, which increases the height of the building, which has the disadvantage of reducing mobility.

The present invention consists of traveling auxiliary wheels arranged on the front, rear, left, and right sides of a bogie that runs along a running girder, and when the bogie stops at a predetermined stop position, the traveling auxiliary wheels appear at a position on the running girder that corresponds to the installation position. and a jack up device that lifts up the traveling auxiliary wheels and lifts the truck from the traveling girder when the truck stops at the stop position. The object of the present invention is to provide a truck jacking device that eliminates the drawbacks of the above.

Since the present invention is constructed as described above, when the bogie stops at a predetermined stop position on the running girder, the above-mentioned jack up device can lift up the bogie from the running girder by using the traveling auxiliary wheels. Therefore, by simply embedding the jack up device in the running girder without raising the height of the building as in the past, the bogie can be lifted off the running girder very easily, and tire replacement work can be carried out efficiently.

Next, the present invention will be described with reference to illustrated embodiments.

In FIGS. 2 to 4, 2 is a hydraulic jack constituting the jack up device, which is composed of a hydraulic jack cylinder 3, an upper and lower cylinder 4, and a guide cylinder 5.
As shown in Figures 2 and 4, it is embedded in the running girder 1 so that it can be retracted and retracted, and when the upper and lower cylinders 4 are retracted, it becomes flush with the top surface of the running girder 1, so that it does not interfere with the running of the bogie. There is.

As will be described later, this hydraulic jack 2 is connected to a traveling girder 1 corresponding to the installation position of the traveling auxiliary wheels 10.
They are installed at the upper position as shown in FIG. 3, and are operated by being connected to a hydraulic unit (not shown) via piping.

Reference numeral 6 denotes a trolley, which, as shown in FIG. If the vehicle becomes unable to travel due to such reasons, the travel auxiliary wheels 10 come into contact with the travel girder 1, and the vehicle travels to a predetermined stop position without applying any load to the travel tires 8.

In this way, when the truck 6 stops at a predetermined stop position on the traveling girder 1, the hydraulic jack 2 is operated in a known manner via a hydraulic unit (not shown), and the upper and lower cylinders 4 are moved along the guide cylinder 5. Raise, 4th
As shown in the figure, the traveling auxiliary wheels 10 are pushed up to lift the entire truck 6 from the traveling girder 1 as shown in FIG.

In this embodiment, by operating the hydraulic jack cylinder 3 in this manner, the entire bogie 6 can be lifted from the running girder 1 via the travel auxiliary wheels 10, so the monorail vehicle can be moved to a predetermined position on the running girder 1. After stopping at the stop position, simply by operating the hydraulic jack 2, the trolley can be floated to the surface and the traveling tires can be replaced. Therefore, the building can be made lower because there is no need for a conventional overhead crane to lift the truck.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of a conventional example, FIG. 2 is a front view showing an embodiment of the present invention, FIG. It is an enlarged view which extracts and shows a part. 1: Travel girder, 6: Trolley, 10: Travel auxiliary wheel,
2: Jack up device.

Claims (1)

[Scope of utility model registration request] Traveling auxiliary wheels are disposed on the front, rear, left and right sides of a bogie that travels along the traveling girder, and travel auxiliary wheels are provided so as to be able to appear and retract at positions on the traveling girder corresponding to the installation positions of the traveling auxiliary wheels when the truck stops at a predetermined stop position. A jack up device for a bogie, comprising a jack up device that lifts up the travel auxiliary wheels to lift the bogie from the running girder when the bogie stops at the stop position.