JPS6049730B2 - Direction control method and device for deep soft ground improvement treatment machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to deep soft ground improvement, and in particular to a control method and control device that allows a treatment machine to penetrate or pull out soft soil vertically or in a predetermined direction.

Improvement treatment of soft ground using deep soft ground improvement method is as follows:
This is done using a processing machine, which is very long and narrow.

For this reason, when attempting to treat deep areas of soft ground, the direction of penetration and extraction of the treatment machine tends to deviate from the vertical or predetermined direction, making it difficult to construct hardened walls in a predetermined manner. In addition, if there is a deviation between the direction of penetration and withdrawal of the processing machine and the predetermined direction, one way to correct it is to tilt the boat on which the processing machine is suspended, that is, grasp the top of the long and narrow processing machine, and The misalignment was corrected by moving the

With this method, when the treatment machine is inserted into the ground to some extent, the binding force of the soft soil is strong and it is difficult to control the direction of the treatment machine. Therefore, an object of the present invention is to make it possible to control the tip of the stirring shaft of the treatment machine so that the treatment machine always penetrates and withdraws in a predetermined direction, thereby improving the construction accuracy of improving soft ground.

Next, the direction control device and control method for a processing machine according to the present invention will be explained with reference to FIGS. 1, 2, 3, and 4.

The deep soft ground improvement treatment machine 1 is suspended from a tower 3 on a bodywork ship 2 via a wire so that it can be raised and lowered. Incidentally, the lifting and lowering of the processing machine 1 is guided by the reader 4. The processing machine 1 has several long stirring shafts 6 vertically installed below the rotary drive device 5.
Several stirring blades 7 are attached to the lower part of the stirring shaft 6.
Further, the stirring shaft 6 has a support tube 8 extending below the rotation drive device 5.
The support cylinder 8 has a length that reaches near the stirring blade 7. Note that the support tube 8 may be in the form of a framework or a thin solid rod. Furthermore, stirring blade 7
A curing agent supplying vibrator 10 is held in the support tube 8 so that the curing agent discharge port 9 is located near the curing agent supplying vibrator 1.
0 is connected to a curing agent tank (not shown). Further, the supply of the curing agent is not limited to this method, but it may be passed through the stirring shaft and discharged from the tip of the stirring shaft or the stirring blade. A downward control device 11 is attached to the lower part of the support tube 8 .

In order to correct the misalignment between the direction of the processing machine 1 and the predetermined direction,
It is necessary to install directional control devices 11 at four locations on the front, rear, left and right sides of the processor 1, and when the processor 1 is provided with two support tubes 8 so as to consist of eight stirring shafts 6 as shown in FIG. Since the direction control devices 11 are attached to the front, rear, and outer positions of each support tube 8, a total of six direction control devices 11 are attached. Also, depending on the purpose, it may be installed only on the left and right or front and back. The direction control device 11 is formed of a jack 12 whose base end is pivotally supported on the support tube 8, and a control plate 13 whose both ends are pivotally supported between the piston rod tip of the jack 12 and the support tube 8. One end of the control plate 13 is laterally extended in accordance with the expansion and contraction of the control plate 13, and the amount of the overhang can be controlled.

In addition, inclination measuring devices 14, 14'' are attached to the support tube 8 to measure the inclination angle in two directions, front and back and left and right at the tip of the support tube 8, and the measured values are electrically transmitted to the processing vessel 2. When processing soft ground using the processing machine 1 having the above-mentioned direction control device 11, the stirring shaft 6 is rotated while penetrating into the soft ground.

As the penetration of the stirring shaft 6 progresses, the inclination measuring device 14,
14" to confirm whether the penetration of the processor 1 is perpendicular or in a predetermined direction. This signal indicates that there is a deviation between the direction of the processor and the predetermined direction. When this is detected, the direction control device 11 at the dislocated tip is activated, the jack 12 is extended, and the control plate 13 is pressed against the inner circumferential wall of the soft ground through which the stirring blade 7 has passed.

This pressing generates a lateral reaction force on the control plate 13, and the deviation generated at the tip of the processing machine 1 is corrected. Thereafter, when it is detected that the stirring shaft 6 has penetrated in a predetermined direction, the jack 12 is returned to its extension and the processing machine 1 is penetrated into the soft ground again.

After the stirring shaft 6 penetrates to a predetermined depth, the processor 1 is pulled out. Also, when discharging the curing agent near the stirring blade 7,
This may be done either when the processing machine 1 is inserted into soft ground or when it is pulled out. As described above, when the direction control device of the present invention is used, if the processing machine 1 is penetrated into soft ground and the tip of the processing machine deviates from the predetermined direction, the tip of the processing machine where the deviation occurs, etc. Since the part itself can be corrected by tilting in the opposite direction, the penetration of the treatment machine 1 is accurate, and soft ground can be hardened with precision.

Next, a second embodiment of the present invention will be described with reference to FIGS. 5 and 6.
In this embodiment, one direction control device 11 is provided between two support tubes 8 in order to correct the deviation of the processing machine 1 from a predetermined direction in the front and back direction. The lower end of the control plate 13 of the direction control device 11 is rotatably supported between two support cylinders 8, and the other end of the control plate 13 is pivoted to two jacks 15, 15''. The proximal end of `` is pivotally supported by a holding frame 16 attached to each support cylinder 8 at a distance in the front and back, and the control plate 13 is moved forward and backward in the shape of a two-dot chain line in FIG. Therefore, when the control plate 13 is tilted, the control plate 13 moves through the soft soil as the treatment machine 1 penetrates, so the treatment machine 1 faces in the direction of inclination of the control plate 13, and the treatment machine 1 can be modified so that it penetrates in a predetermined direction.

Note that the other configurations and operations are the same as those in the first embodiment.
Next, a third embodiment will be explained with reference to FIGS. 7 and 8.

This embodiment is similar to the second embodiment in that a tiltable control plate 13 is provided between two support tubes 8. Its structure is such that a shaft 17 protrudes from both sides of a control plate 13, the shaft 17 is held in a support frame provided in a support tube, and the shaft 17 is controlled in small angle increments by a rotation device 18 provided in a support tube 8. The plate 13 can be tilted. By tilting the control plate 13, the penetration of the processing machine 1 can be corrected as in the second embodiment.
Also, when the processing machine 1 is being pulled out, the direction of the pulling out can be controlled by controlling the tilt of the control plate 13. Next, a fourth embodiment will be explained with reference to FIGS. 9 and 10.

In this embodiment, a guide groove 19 extending in the front-rear direction is provided between two support tubes 8, a control plate 13 is provided which can be slid while being guided by the guide groove 19, and a jack 20 is provided to slide the control plate 13. is attached to the support tube 8 via a support frame. Therefore, when the control plate 13 is extended laterally, the tip of the control plate 13 will not only experience resistance in the vertical direction from the soft soil that the stirring blade has passed through, but also resistance in the front and rear directions due to the difference in balance between the flow of the soil before and after it. The front end of the processing machine faces in the direction in which the resistance in the longitudinal direction is received, and the direction of the processing machine 1 can be corrected.

In this way, the direction can be corrected when the processor 1 is inserted and withdrawn. Next, a fifth embodiment will be explained with reference to FIG. In this embodiment, the lower part of the control plate 13 is pivotally supported on the support cylinder 8 via a bracket, and the upper part of the control plate 13 is pivotally supported on the support cylinder 8 via the bracket and two links 18 connected together. Furthermore, the tip of the cylinder 19 is pivotally connected to the connecting portion of the two links, and the base of the cylinder 19 is pivotally supported by the support cylinder 8. Therefore, when the cylinder 19 is extended, the control plate 13 is tilted as shown by the two-dot chain line in FIG. 11, and the upper part of the control plate 13 pushes the inner wall of the excavated hole, so that the direction of penetration of the processing machine 1 can be corrected. .

Next, a sixth embodiment will be explained with reference to FIG.

In this embodiment, the control plate 13 is connected to the support cylinder 8 by a parallel link.
It moves parallel to the Its composition is control board 1
One end of the doglegged link 21 is pivotally supported at two locations above and below the doglegged link 3, the center portion of the doglegged link is pivotally supported via a bracket on the support cylinder 8, and the cylinder 2 is further supported at the other end of the upper doglegged link.
The tip of the cylinder 22 is pivoted, and the base of the cylinder 22 is pivoted to the support tube 8. Therefore, by controlling the expansion and contraction of the cylinder 22, the control plate 13 can be pushed against the inner wall of the excavated hole, and the direction of insertion and extraction of the processing machine 1 can be corrected. Next, a seventh embodiment will be explained with reference to FIG. This embodiment uses two links 23 and a cylinder 24 that are pivoted at the center, and both ends of one link 23 are slid onto guide guides 25 provided on the control plate 13 and the support cylinder 8, respectively. be. Therefore, by expanding and contracting the cylinder 24, the inclination angle of the link 23 can be changed and the control plate 13 can be extended parallel to the support tube 8.

This overhang allows the direction of penetration and withdrawal of the processing machine 1 to be corrected. Next, an eighth embodiment will be explained with reference to FIG.

In this embodiment, the control plate 13 is fixed to the tips of two cylinders 26 provided in the support tube 8.
6 and the control board 13 may be connected by a pin connection. In such a configuration, the control plate 13 is extended by controlling the expansion and contraction of the cylinder 26, and the direction of insertion and withdrawal of the processing machine 1 can be corrected. Next, a ninth embodiment will be explained with reference to FIG. 15.

This embodiment uses two control plates 13, 13'', and the opposite ends of the control plates 13, 13'' are connected to the tip of the cylinder 27 via a connecting member. Attach the base to the support tube 8. Each control board 13
, 13'' are connected to the support tube 8 via brackets, respectively.
The control plates 13, 13'' can be pivoted around the pivot supports 28, 2''8''. Therefore, by controlling the cylinder 27 to expand and contract, the two control plates 13, 1
3'' is extended at an arbitrary angle, the direction of penetration and withdrawal of the processing machine 1 can be corrected.

In the second to ninth embodiments described above, as in the first embodiment, it is possible to harden soft ground with high precision.

Further, the direction control devices are generally provided at four locations around the processing machine 1, but the mounting positions and number of the direction control devices can be arbitrarily selected.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a processing machine having a direction control device of the present invention, Fig. 2 is an enlarged side view of the direction control device, Fig. 3 is a front view of Fig. 2, and Fig. 4 is a flat view of Fig. 2. 5 and 6 are side and front views of the direction control device of the second embodiment, and FIGS. 7 and 8 are side and front views of the direction control device of the third embodiment. 9 and 10 are side and front views of the direction control device of the fourth embodiment, and FIGS. 11, 12, and 13.
14 and 15 are side views of the direction control devices of the fifth embodiment, the sixth embodiment, the seventh embodiment, the eighth embodiment, and the ninth embodiment, respectively. 1... Processing machine, 6... Stirring shaft, 8...
... Support tube, 11 ... Direction control device, 12
... Jack, 13... Control board.

Claims (1)

[Scope of Claims] 1. A deep soft ground improvement method in which a deep soft ground improvement treatment machine is used to discharge a hardening agent into the soft ground and knead the soft soil and hardening agent with a stirring blade for hardening treatment, including: A directional control device that detects the deviation between the direction of penetration or withdrawal of the processing machine and a predetermined direction according to the penetration or withdrawal of the processing machine into soft soil, and is equipped near the top of the stirring blade so that it can be pushed out or tilted. The plate is operated by a driving means such as a jack or a rotating device mechanically connected to the direction control plate to control the direction of penetration and withdrawal of the processing machine, so that the processing machine penetrates into soft soil vertically or in a predetermined direction. and a direction control method for a deep soft ground improvement treatment machine that can perform pull-out operations. 2. A long stirring shaft with a stirring blade attached at the bottom thereof is rotatably attached to a long support, the upper end of the stirring shaft is connected to a rotational drive device, and further has a hardening agent supply device for discharging hardening agent to the stirring blade portion. In a deep soft soil improvement treatment machine, a directional control plate is provided in the vicinity of the upper part of the stirring blade on the support of the stirring shaft so that it can be tilted or pushed out, and a tilting or extrusion device for the directional control plate is provided on the support, and the soft soil of the treatment machine is A direction control device for a deep soft ground improvement treatment machine, characterized by being able to control the direction of penetration into and withdrawal from the inside.