JPS6042160B2 - Structure work vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a vehicle for traveling on railway tracks, mainly for the inner walls of tunnels,
This relates to a structural work vehicle used for inspection and maintenance work on structures such as bridges.

For example, as shown in Fig. 1, a structure work vehicle that performs inspection and maintenance work on various structures attached to railway tracks has a rotating column C on the vehicle body A, an arm D that can swing vertically, and an arm D at the tip of the arm D. A crane-shaped workbench device B consisting of a workbench E, etc. is attached, and the workbench device B is self-propelled on the railway track, rotates the workbench device B, and swings the arm D and the workbench E up and down. workers can now perform inspection and maintenance work on high-altitude structures around railway tracks.

FIG. 2 is a schematic explanatory diagram of a structure work vehicle currently in general use. A swing device F provided at the bottom of a swing column C allows the work platform device B to be moved to a stationary portion G on the vehicle body A. On the other hand, it is designed to be able to turn, and the turning device F is installed in a stationary part G fixed on the vehicle body A, as shown in FIG.
By driving a power source such as a hydraulic motor H, the turning column C can be turned around the stationary part G through various gear mechanisms and the like.

When using such conventional devices in places with cuts (inner and outer rail surfaces are inclined due to curves, etc.), the center of rotation of work platform device B is tilted as shown in Figure 2. When you try to move the cutting position from the low position to the high position, the horizontal component force f of the weight W of the workbench device B
This requires extra power, and when turning from a high position to a low position for cutting, force f is applied, which may result in extremely unstable conditions, and the operator must work in an unstable state. Not only is there a problem in that the cut is particularly large, the workbench device B cannot be rotated, making it impossible to perform the work.

The present invention provides an apparatus that solves the problems of the conventional apparatus as described above, and will be described below with reference to the embodiments shown in FIGS. 4 to 6. In Fig. 4, 1 is a vehicle body, 2 is a workbench device consisting of a swing column 3, an arm 4, a workbench 5, etc. Its structure is the same as the conventional one, and it is installed in a stationary part that supports the swing column 3. It is also similar to the conventional device that it can be rotated by a rotating device 6.

In the present invention, the workbench device 2 including the swivel device 6 is mounted on a cant correction table 7 which is mounted on the vehicle body 1 by means of a cylinder device 8 so as to be tiltable with respect to the surface of the vehicle chassis.

As shown in FIG. 6, the cant correction table 7 is pivotally connected to a hinge receiver 9 fixed on the vehicle body 1 on one side, and a cylinder receiver fixed on the vehicle body 1 on the other side. The base of a cylinder device 8 whose tip is pivotally connected to the shaft 11 by a shaft 12 is pivotally connected to the shaft 13, and as the cylinder device 8 expands and contracts, the ligand correction table 7 rotates around the shaft 10, and the base of the cylinder device 8 rotates around the shaft 10. It can be tilted so that either the left or right side is higher than the other side. Therefore, when working in a place with a cant as shown in FIG. The center of rotation is corrected to be approximately vertical, and in this state, the workbench device 2 can be freely rotated to perform work. This kind of print correction table 7
It is convenient if the tilting movement by the cylinder device 8 is performed by the worker operating the operating lever and operating the hydraulic circuit while looking at the level 16 attached to the workbench 5, for example.

Furthermore, the cylinder device 8 is installed so that it is at the middle position of the cylinder stroke (112 of the entire stroke) in the standard state in which the cant correction table 7 is parallel to the chassis surface of the car body 1, and this state is maintained on a flat track. It is natural to do the work,
Use this condition again. Although this often happens, the cant correction table 7 is fixed to the vehicle body 1 in order to prevent the hydraulic cylinder 8 from falling due to an oil leak or from rising due to changes in the load of the work platform device 2. Lock pin 1 on side support 14
5, and always fixed at the above reference state! Therefore, it is desirable to remove the lock pin 15 and operate the cylinder device 8 to correct the cant only when working in a place where there is a cant. As described above, according to the present invention,
Due to its extremely simple configuration, the work platform can always be turned horizontally in the same way as on a flat track, even in places with cant, which significantly improves work stability. This allows the workbench to be rotated to perform predetermined work in the same way as when the work is done, and can significantly improve work efficiency. Furthermore, according to the present invention, the fluctuation of the center of gravity position of the vehicle body is reduced and the safety of the vehicle body is improved as described above, and the conventional work platform device including the swivel device can be used as is, which has many practical effects. It is something that can be brought about.

It goes without saying that the present invention can also be applied to a structural work vehicle having a workbench device in which a workbench is provided on a support that can be raised and lowered.

[Brief explanation of the drawing]

Fig. 1 A shows a side view and a plan view showing an example of a general structural work vehicle to which the present invention is applied, and Fig. 2 shows an outline of a work platform device attachment part of a conventional structure work vehicle. Front view, 3rd
The figure is a schematic cross-sectional explanatory view of the swivel device shown in FIG. 2, FIG. 4 is a schematic front view of the workbench device attachment part showing an embodiment of the present invention, and FIG. 5 is an explanation of the operating state of the device shown in FIG. Front view, No. 6
Figures A and 5 are a perspective view of the cant correction table attachment part in Figures 4 and 5, and a sectional view of the cylinder device attachment part in Figure A. 1... Vehicle body, 2... Work platform device, 3... Swivel column,
4... Arm, 5... Workbench, 6... Swivel device, 7...
... Cant correction table, 8... Cylinder device, 9... Hinge receiver, 11... Cylinder receiver, 10, 12, 13,...
...Shaft, 15...Lock pin.

Claims (1)

[Scope of Claims] 1. In a structure work vehicle that travels on a railway track and performs maintenance and inspection work on structures around the railway track, a work platform device that supports the work platform so that it can be rotated or raised and lowered is provided. , a structure characterized in that either the left or right side is pivotally attached to the vehicle body so as to be rotatable in the vertical direction, and the other side is attached to a cant correction table supported by the vehicle body by a cylinder device that extends and contracts in the vertical direction. work vehicle. 2. The structure according to claim 1, wherein the cant correction base is fixed to the vehicle body with a removable lock pin in a state substantially parallel to the chassis surface of the vehicle body. work vehicle.