JPH0249824A - Weak ground processing machine - Google Patents

Abstract

PURPOSE:To make it is possible to adjust the space between crawlers to a value suitable for the width of a working area by providing such an arrangement that the length of insertion into a receiving cylinder in a connecting beam is changed by manipulating a hydraulic cylinder. CONSTITUTION:When hydraulic oil is fed into a right side hydraulic oil entrance port of a hydraulic cylinder 5 on the crawler C1 side, a piston in the hydraulic cylinder 5 moves leftward. Further, a piston rod 5a integrally incorporated with the piston moves leftward so that crawlers C1, C2 are moved together with a coupling beam receiving cylinder so as to widen the space between the crawlers C1, C2. When hydraulic oil is fed into a left side hydraulic entrance port of the hydraulic cylinder, the space between the crawlers C1, C2 is narrowed.

Description

[Detailed description of the invention] [Industrial application field] The present invention improves the ground by adding cement milk, etc. to soft ground such as a landfill, muddy wetland, or river sludge treatment, mixing and stirring. This relates to a soft ground treatment machine.

[Conventional technology]

In general, soft ground treatment machines with float-type crawlers are of the mixing type, in which cement milk, etc. is poured in while stirring the ground to be treated with a stirring blade, and in the other, the soft soil treatment machine is carried out by squirting cement milk from the claw at the tip of the shovel. There are power shovel type machines, but almost all of these conventional soft ground treatment machines do not have a structure to control and adjust the crawler spacing, so if it is necessary to adjust the crawler spacing, They had no choice but to replace the fixed beams that secure both crawlers.

[Problem that the invention seeks to solve]

However, with the conventional soft ground treatment machine where the spacing between the crawlers cannot be adjusted, if the space is narrow, such as when treating sludge in a river, the spacing between the crawlers is too large, making it difficult for the machine to move. The problem is that the work is often extremely burdensome.

[Means for solving problems]

The present invention has been made for the purpose of solving the problems of the prior art as described above and providing a soft ground treatment machine that can adjust the spacing between crawlers over a suitable range. In a soft ground processing machine, two crawlers with At least two connecting beam receiving cylinders are installed in a watertight manner, and the connecting beams are fitted into the receiving cylinders so as to be movable in advance and retractable, and the insertion length of the connecting beams into one or both of the receiving cylinders is controlled by hydraulic pressure or other means. The present invention is characterized in that the distance between both crawlers is set to a desired distance by changing the distance between the two crawlers.

[Action of the invention]

That is, the soft ground treatment machine of the present invention changes the length of insertion of the connecting beam, which is fitted into the connecting beam receiving tube attached to the float so that it can move forward and backward, into the receiving tube by operating a hydraulic cylinder or the like. By adjusting the interval between the two, the interval can be made suitable for the size of the work place, and
Since the load per unit area of both crawlers can be appropriately changed by the above-described operation, processing work, especially on extremely soft ground, can always be carried out stably.

〔Example〕

Next, an example of implementation of the present invention will be explained with reference to the drawings.

Figure 1 is a rear view of a power shovel-type soft ground treatment machine used for sludge treatment in urban rivers, Figure 2 is a side view of the same, and Figure 3
The figure is a front view with the left side in section with the processing equipment (power shovel) removed, and Figure 4 is a side view of the crawler part.
FIG. 5 is a plan view with the processing device removed.

In FIGS. 3 to 5, C and C2 are crawlers each having a float 1, and 2 and 3.4 are crawlers C and C2.
1, C, the connecting beam receiving cylinders are mounted watertightly at regular intervals facing the floats 1, 12.13.14 are the receiving cylinders 2,
3.4 is a connecting beam that is fitted in a movable manner, and 5 is a connecting beam 12.
14, the negative end of which is fixed to the connecting beam by a fixing pin 6, and the tip of the piston rod 5a fixed to the outer end wall of the float 1 by a fixing nut 7. 8 is a fixed stand for installing the shovel installed on the connecting beam 13.14,
Reference numeral 9 denotes a rotating table provided on the fixed table 8.

A is a power shovel attached to the fixed base 8, which is designed to stir and mix the ground to be treated while squirting cement milk from the cutting edge a of the shovel part a. It is supplied by piping and high pressure hoses from a boat or bachelor's cement milk pump.

The operation of the soft ground treatment machine configured as described above will be explained as follows.

Now, in the state shown in Figure 3, crawlers C1 and C
2, if pressure oil is supplied to the right pressure oil outflow inlet of the hydraulic cylinder 5 on the crawler side, the piston in the hydraulic cylinder 5 moves to the left (not shown) and is integrated with the piston. The piston rod 5a similarly moves to the left, and the crawlers C1 and C2 integrated with the float 1 move together with the connecting beam receiving cylinders 2 and 3°4, and finally move to the end of the leftward movement of the hydraulic cylinder 5. do. The dashed line outside the figure indicates its position. Similarly, crawlers C,...
In order to narrow the distance between C and C, if pressure oil is supplied to the left pressure oil outlet of the hydraulic cylinder 5, the piston in the hydraulic cylinder 5 moves to the right, and the piston rod 5a integrated with the screw 1 is moved. Similarly, move to the right and crawler C.
The CZ moves together with the connecting beam receiving cylinders 2, 3.4, and finally moves to the rightward end of the movement of the hydraulic cylinder 5. The dashed line inside the figure indicates its position.

Therefore, the width of the machine body can be easily changed to correspond to the width of the river, which is extremely convenient for sludge treatment work in rivers.

Furthermore, assuming that the position of point G in Fig. 4 is the center of gravity of the aircraft, if the crawler C1 is moved to the position shown by the dashed line on the left side, the unit area load applied to the track of the crawler will naturally be higher than that of the crawler C2. Because it becomes larger compared to
By operating in this manner or vice versa, it is possible to easily deal with the case where the ground strength of the left and right crawlers is different, so that it is possible to always perform work in a stable state.

In the above embodiment, the hydraulic cylinder 5 is connected to the connecting beam 1.
2.14 is arranged internally on both sides, but it may be arranged internally on either side.

〔Effect of the invention〕

The present invention is as described above, and by widening or narrowing the spacing between the crawlers with a simple operation, it is possible not only to adapt to the wide and narrow conditions of the work site, but also when one crawler is on the improved ground. Even if the crawler on the other side is on untreated ground, by moving the position of the crawler on one side and changing the distance to the center of gravity, the load per unit area of each crawler can be changed, and the crawler track on the untreated ground side can be moved. Since it is possible to make the unit area load of the machine much smaller than the unit area load of the crawler track on the treatment side, it is possible to perform treatment work more efficiently and stably than with conventional soft ground treatment machines. In particular, it is extremely suitable as a soft ground treatment machine for treating extremely soft ground.

[Brief explanation of the drawing]

Figure 1 is a rear view of a power shovel-type soft ground treatment machine used for sludge treatment in urban rivers, Figure 2 is a side view of the same, and Figure 3
The figure is a front view with the left side in section with the processing bag W (power shovel) removed, and Figure 4 is a side view of the crawler part.
FIG. 5 is a plan view with the processing device removed.

Claims (1)

[Claims] 1. In a soft ground processing machine that consists of two crawlers with floats connected by a plurality of connecting beams and a fixed stand on which a ground processing device such as a power shovel is installed on the connecting beams, the floats of each crawler are connected to each other. At least two connecting beam receiving cylinders are mounted watertightly facing each other, and the connecting beams are fitted into the receiving cylinders so as to be movable back and forth, and the length of insertion of the connecting beams into one or both of the receiving cylinders is determined. A soft ground processing machine characterized in that the spacing between both crawlers is set to a desired spacing by changing the spacing using hydraulic pressure or other means.