JPH0735653B2 - Mixing equipment for soft ground - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for treating soft ground by stirring and mixing ground improvement material.

(Problem of the invention and its characteristic point) As a soft ground agitating and mixing device capable of processing deep underground in a device having a low height, a rotation composed of an outer cylinder tube which expands and contracts telescopically and an inner insertion tube. Although a shaft is used and a rotary drive is attached to the upper end of the rotary shaft, it has been publicly known (see Japanese Patent Publication No. 61-13049).
Since the rotating shaft is thick in the outer tube part, the part where the processing is not performed easily remains, and the weight of the rotating shaft also increases, and the weight of the rotary drive is added to this, so it is necessary to pull up the rotating shaft. There are drawbacks such as increased power required.

The present invention is intended to provide a soft ground agitation and mixing processing apparatus capable of processing deep into the ground despite its low height without the above-mentioned difficulties. The structural features are as described in the claims.

As is clear from its characteristic configuration, in the device of the present invention, the extension of the shaft is an addition type, the rotary drive part of the shaft is on the lower workbench, and the penetration force of the shaft is provided by the wire. I'm running.

(Detailed Description of the Invention According to the Drawings) FIG. 1 and FIG. 2 are overall views of an embodiment of the present invention.

A swivel mechanism 3 is suspended by wires 4 on the front surface of a leader 2 standing upright on the front of the self-propelled vehicle (base) 1, and an upper workbench 5, 5 is provided at the middle and the base of the leader 2, respectively. 5'and the lower workbench 6 are attached.

The lower workbench has a pair of left and right rotating bodies that are driven by appropriate power.
7, 7'are provided, and hollow rotary shafts 8, 8'are inserted therethrough.

The hollow rotary shafts 8 and 8'has a rectangular cross section and can move up and down while rotating together with the rotors 7 and 7 '. At the lower end thereof, the stirring blades 9 and 9'and the ground improvement material discharge port ( (Not shown) are provided in appropriate modes.

The upper workbench 5, 5'is attached to both sides of the leader 1 and can be vertically moved by cylinders 10, 10 '.

The upper workbench 5, 5'is provided with arms 11, 11 'which are horizontally rotated by a cylinder, and the hollow rotating shaft 13 for connection is connected to the tip end side of the arm 11, 11' with suspenders 12, 12 '. , 13 'can be hung.

The connecting hollow rotary shafts 13 and 13 'are suspended in a state in which the caps are fastened to the hanging caps 12 and 12' so that the caps are fastened to the hanging caps 12 and 12 'so that they can be rotated. It moves between the retracted position and the connection position (the position above the rotating bodies 7, 7 ') shown.

From the swivel mechanism 3, the rotary connectors 14 and 14 'project downward, and in the state shown in the drawing, the hollow rotary shafts 8 and 8'.
The upper end of the is detachably pinned.

Non-rotating connectors with valves 15,1 for rotating connectors 14,14 '
5'is connected, and ground improvement material supply hoses 16, 16 'are connected thereto.

Reference numeral 17 is a penetrating wire attached to the lower side of the swivel mechanism 3 via a sheave, and both wires 4 and 17 are wound around a winch on the self-propelled vehicle 1.

Next, 1 of the soft ground treatment performed by using the above-mentioned device
The mode will be described with reference to FIG.

I is the state immediately before the start of processing work, and the rotary connector 14,1
The upper ends of the hollow rotating shafts 8 and 8'are connected to 4 ', and the connecting hollow rotating shafts 13 and 13' are in the sideward retracted position.

II is a hollow rotary shaft with wire 17 via swivel mechanism 3.
The hollow rotating shaft is processed by stirring and mixing while pulling down 8,8 '.
It is shown that the lower ends of the hollow rotating shafts 8 and 8'are stopped when the upper ends of the connecting hollow rotating shafts 13 and 13 'reach slightly below the lower ends of the connecting hollow rotating shafts 13 and 13'. Check the outer circumference of 8'18,1
It is prepared so that the hollow rotary shafts 8 and 8'will not descend even if 8'is attached and removed from the rotary connectors 14 and 14 '.

III shows a state in which the rotary connectors 14 and 14 'are removed from the hollow rotary shafts 8 and 8'and only the swivel mechanism portion 3 is suspended by the wire 4 and the hollow rotary shafts 13 and 13' for connection are moved to the connecting position. , IV moves the upper workbench 5,5 'slightly downward,
In the state where the lower ends of the connecting hollow rotary shafts 13 and 13 'are connected to the upper ends of the hollow rotary shafts 8 and 8', V lowers the swivel mechanism portion 3 to rotate to the upper ends of the connecting hollow rotary shafts 13 and 13 '. Connector 14,1
4'is connected and arms 11, 11 'are rotated to the side, and VI is in a state in which the chucks 18, 18' are removed and the stirring and mixing work is restarted to perform processing to a predetermined depth. .

After that, the rotary shaft is pulled up and the state of VII (the state of the device is I
Same as the above), but this is the reverse of the above-mentioned penetration, so the explanation is omitted.

When the stirring and mixing process is performed at the time of penetration as described above, whether or not the stirring and mixing process is further performed at the time of withdrawal is optional, but the stirring and mixing process is not performed at the time of penetration and the stirring and mixing process is performed only at the time of withdrawal. You may do it.

(Effect of the invention) Since the device of the present invention is as described above, in addition to sufficiently achieving the intended purpose, the center of gravity of the entire device is low, the stability during construction is good, and the like. Can be expected.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a side view of the same, and FIG. 3 is a process diagram of a soft ground treatment operation using the apparatus shown in FIGS. . 1 ... Self-propelled vehicle (base), 2 ... Leader, 3 ... Swivel mechanism part, 5, 5 '... Upper workbench, 6 ... Lower workbench, 7, 7' ...
Rotating body, 8,8 '... Hollow rotating shaft, 13,13' ... Connecting hollow rotating shaft, 14,14 '... Rotating connector, 15,15' ... Non-rotating connector, 1
6,16 '… Ground improvement material supply hose, 17… Wire (for penetration), ....

Claims (1)

[Claims] 1. A leader standing upright on a base body, a swivel mechanism is suspended from the leader, an upper workbench and a lower workbench are attached, and a lower end is agitated by a power-driven rotating body provided on the lower workbench. A hollow rotary shaft equipped with blades and ground improvement material discharge port is vertically movably inserted, and the upper workbench is provided with a means for suspending the hollow rotary shaft for connection and moving it between the retracted position and the connected position. , The swivel mechanism part is provided with a non-rotating connector to which a rotary connector to which the upper ends of the hollow rotating shaft and the connecting hollow rotating shaft are selectively connected and a ground improvement material supply hose are connected, and for penetration. The soft ground agitation and mixing processing refitting is characterized by attaching the wire.