JPS59170319A - Road-bed improver with movable excavation rod frame - Google Patents

Abstract

PURPOSE:To improve the subordinate ground of road-bed in the outside portion in the widthwise of the track truck by using a system in which a frame to move a rod, provided with an excavation rod for improving the ground, is moved transversely beyond the side edge of the track truck. CONSTITUTION:A rail is provided transversely on a track truck 11, a coupler for the rail is provided at the lower part of a frame 10 for driving an excavation rod, the coupler and the rail are coupled with each other in a transversely slidable manner, and the frame 10 is moved by an oil-pressure jack 21. After the ground below the track truck 11 is improved, the frame 10 is extended outwards bilaterally by the jack 21, the excavation rod 1 is penetrated to the subordinate ground of the road-bed by an oil-pressure mechanism 12, and a ground improving agent is injected from the tip of the rod 1.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a railway ground improvement machine for improving the soft ground in the case where the Ichigami subgrade under the substructure is weakened.

Conventionally, methods for this purpose include the published patent publication 1937.
As disclosed in Japanese Patent Publication No. 4-27211, a digging rod with a foldable stirring blade at the tip is inserted into soft ground, the stirring blade stirs the soft ground, and the soil surface scorching agent is applied from the digging rod. There is a technique in which the soft ground under the road bed is solidified and strengthened by injecting it into the stirred soft ground.

Therefore, as a machine for performing railway ground improvement work using the digging rod as described above, a track bogie that can run on the track is made, and the digging rod drive mechanism is installed on the track bogie. However, in this case, the width of the track bogie is naturally limited because the track bogie passes by various facilities on the side of the track, such as station platforms, as necessary. , it will not be possible to operate the digging rod outside of that.

The present invention has been made in view of the above points, and by configuring the digging rod drive frame provided on the track bogie to be movable laterally beyond the ψ side edge of the track bogie, The digging rod can be operated from the outside of the truck.

The present invention will be explained in detail below based on embodiments shown in the drawings.

First, to briefly explain an example of a digging rod for carrying out the present invention, as shown in FIG. A hole (not shown) for inserting and removing a stirring blade 5-15', which will be described later, is provided in the body 4 of the stirring blade 5.5.
' is constructed in a substantially angular shape and is installed in different levels and rotatably by the shaft pins 6 and 6', and the connecting pins 9 and 9' can be moved up and down via the cylinder 8 by lowering and raising the ring 7. Accordingly, the stirring blade 5.5' is connected to the shaft pin 6.
．． It is configured so that it can be rotated about a rotation axis 6' and housed in the body 4 of the rod, or opened laterally as shown in the figure.

Next, FIG. 2 shows a side view of the above-mentioned digging rod attached to the track truck.

The digging rod 1 is held by a frame lO equipped with various devices for driving it, and is installed on a track truck 11. The frame 10 is laid down horizontally with the digging rod pulled up as shown by the two-dot chain line in the same figure, so that the track bogie can run without touching overhead wires or the like. A hydraulic mechanism 12 is provided at the frame 10°, by which the digging rod is operated. The track truck travels on a track 14 with wheels 13 and reaches the work site. After that, the hydraulic mechanism 12 rotates the digging rod and inserts it into the road bed 15, and after penetrating it to the ground below the road bed, opens the stirring blade and rotates the digging opening 7 to remove the softness under the road bed. After stirring the ground, Fig. 1 16
．． A soil solidification agent is injected into the stirred soft ground from the injection port shown at 16'. As a method for this, in the embodiment, the shape of the stirring blade is shown in FIG. The soil solidification agent injected from the injection port 16.16' flows through the guide groove 17 toward the tip of the stirring blade 5.5' and is stirred. The soil solidifying agent is placed in the soil that has been stirred by the rotation of the blades, so that the soil solidifying agent is mixed into the track ground. In the same embodiment, in order to prevent the injected soil solidification agent from spouting out or floating onto the road bed along the digging rod, the digging straw F, , ) body 4. ) Outside-9 As shown in Fig. 2, an outer cylinder 18 is provided, and a screw, 19s is installed around the outer cylinder.
A tr is provided and rotated together with the digging rod, and the soil solidifying agent that is about to rise is forced into the bottom to prevent the soil solidifying agent from rising.

Now, in this invention, the 411th! As shown in the top view in FIG.
The width of the track bogie is approximately the maximum width within the range that does not come into contact with structures on the side of the track when running on the track, and the track bogie has a track bogie as shown in Figure 20.20... The fixed legs are provided so that they can be extended and retracted into the alley, and upon arriving at the work site, the trolley fixed legs are extended to fix the chassis, and then the digging rod is inserted into the ground under the roadbed while rotating as described above. The stirring blades are opened and rotated to stir and improve the ground under the track bed. In the present invention, the frame 10 of the digging rod is placed on the side of the track bogie 11, as shown by the two-dot chain line in the same figure. Configure it so that it can move laterally beyond the edge.

As a structure for laterally moving the frame body, a rail is provided in the horizontal direction on the track bogie, and a fitting part that fits with the rail is provided at the bottom of the frame body, so that the rail and the fitting part are connected. are slidably fitted in the direction of the rail, and the frame body is fitted with a hydraulic jack 21.
．． 21'. Of course, the structure for moving the frame in the present invention need not be limited to the above, and any structure suitable for the purpose of the present invention may be adopted, such as providing a moving mechanism at the bottom of the frame. For.

Since the present invention is constructed as described above, by using the track ground improving machine of the present invention, it is possible to improve not only the ground within the width of the track bogie but also the ground below the track as shown by the circle indicated by the two-dot chain line in Fig. 4. Even the ground under the roadbed outside the side edge of the cart can be easily stirred and stirred by simply moving the frame of the digging rod laterally.
Although this improvement is possible, the movement of the frame is easy because it is configured to be movable on the track bogie from the beginning as described above, and it is easy to move the frame as described above. This eliminates the need for complicated work such as assembling the drive mechanism for the digging rod, and dramatically improves work efficiency. Since the verticality of the soil is reliably maintained and the intervals between excavation and stirring are accurate, there is also the advantage that there is no unfinished part of the ground improvement work.

Of course, the present invention does not need to be limited to the above embodiments,
It goes without saying that the present invention can be carried out by using any method other than the above for the structure of the digging rod, the shape of the stirring blade, the method of injecting the soil solidification agent, etc.

[Brief explanation of drawings]

Figure 1 is a partially cutaway front view showing an example of a digging rod;
The figure is a side view of a railway ground improvement machine that can carry out the present invention, Figure 3 is a sectional view taken along line A-A in Figure 1 of the stirring blade, and Figure 4 is a top view of a railway ground improvement machine that can carry out the invention. .

Claims (1)

[Claims] A frame body for driving the digging rod of track base B is provided, and the soft ground at the bottom of the track bed is stirred by a stirring blade which is provided on the tip of the digging rod so as to be openable and closable, and the soil is added to the stirred soft ground. A track bed improvement machine for injecting a solidifying agent, characterized in that the digging rod driving frame is configured to be movable laterally beyond the side edge of the track bogie.