JPH0931971A - Soft soil improving machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate work progress control and improve execution accuracy in a soft soil improving machine. SOLUTION: An inner unit component 5B slides in relation to an outer unit component 5A by the telescopic action of a cylinder unit 10, raising and lowering a unit 5 nearly vertically, and moving a mixer 4 on the tip of the unit 5 up and down at the time of mixing. In a setting position of the unit 5, since the mixing unit 4 moves up and down without rotating, the locus of mixing is not circular arc and facilitates work progress control and improves execution accuracy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soft ground improving machine which mixes a solidifying material such as slurry cement or powder cement into soft ground such as a landfill, and more particularly to a technique for facilitating the management of work forms. .

[0002]

2. Description of the Related Art A soft ground improvement machine of this type has a self-propelled lower body having a float equipped with a crawler belt, and a mixing device for mixing soil treatment material into the soft ground while agitating the same. An upper vehicle body is installed on the vehicle body, and a driver's cab and a prime mover are mounted on the upper vehicle body (see Japanese Utility Model Publication No. 5-12348).

In a conventional soft ground improvement machine, a unit of a trencher type mixing device is attached to an arm, and the vertical movement of the mixing device unit at the time of mixing is performed by rotating the arm.

[0004]

However, in such a conventional soft ground improvement machine, as described above, since the vertical movement of the mixing device unit is performed by the pivoted arm, the mixing locus is traced. Has an arc shape, which makes it difficult to manage the workmanship and has poor construction accuracy.

Further, in such a conventional structure, it is necessary for the operator to perform a joint aligning operation, which makes it difficult to construct the joint portion. Therefore, in view of the above-mentioned conventional problems, it is an object of the present invention to facilitate management of finished shapes and improve construction accuracy in a soft ground improvement machine.

[0006]

For this reason, the invention according to claim 1 provides a self-propelled vehicle, an arm whose base end is rotatably supported by the self-propelled vehicle, and a distal end of the arm. A unit that includes a mixing device that is attached to extend in a substantially vertical direction and that mixes a soil treatment material into the ground while agitating it, and a lifting unit that lifts and lowers the unit in a substantially vertical direction. Composed of.

In the invention according to claim 1, the unit is moved up and down substantially vertically, and the mixing device at the tip of the unit is moved up and down during mixing. Therefore, the unit moves up and down as it is without rotating at the set position, and the mixing locus does not have an arc shape, which facilitates workmanship management, improves the construction accuracy, and improves joint accuracy. Will be easier to construct.

According to a second aspect of the present invention, in order to correct the verticality of the unit in the left-right direction, the unit includes adjusting means for adjusting the angle in the left-right direction of the unit. In the invention according to claim 2, the horizontal angle of the unit is adjusted, the verticality of the unit in the horizontal direction can be easily corrected, and the vertical vertical movement of the unit can be reliably performed.

According to a third aspect of the invention, the traveling portion of the self-propelled vehicle has a float structure. In the invention according to the third aspect, since the traveling portion of the self-propelled vehicle has the float structure, workability on soft ground is improved.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a soft ground improvement machine 1 in which a solidifying material such as lime, powder cement or slurry cement is mixed into soft ground such as a landfill is a backhoe 2 as a self-propelled vehicle, and a base end portion of the backhoe 2 rotates. An arm 3 supported as much as possible, and a trencher type mixing device 4 which is attached to the tip of the arm 3 so as to extend in a substantially vertical direction and which mixes a soil treatment material into the ground while stirring.
A unit 5 including a unit 5, an elevating unit 6 that vertically elevates and lowers the unit 5, and an adjusting unit that adjusts the horizontal angle of the unit 5 so as to correct the verticality of the unit 5 in the horizontal direction. 7 and.

Here, the backhoe 2 is a vehicle body 2A.
And a traveling unit 2B, and the traveling unit 2B is equipped with a crawler 2a. In addition, you may employ | adopt a float structure in the traveling part 2B. The arm 3 is substantially L
The lower end of the back portion of the support member 8 is rotatably connected to the tip portion thereof. This support member 8
The upper end of the arm and the arm 3 are connected via a cylinder device 9.

In this case, the base of the main body 9A of the cylinder device 9 is rotatably connected to the arm 3, and the tip of the operating rod 9B is rotatably connected to the upper end of the back of the support member 8. The unit 5 is connected to the lower end of the front portion of the support member 8. The unit 5 includes an outer unit structure 5A and an inner unit structure 5B slidably inserted into and supported by the outer unit structure 5A.

The outer unit structure 5A and the inner unit structure 5B are connected to each other via a cylinder device 10. In this case, the main body 10A of the cylinder device 10
The base portion is rotatably connected to the upper end portion of the inner unit structural body 5B, and the tip of the operating rod portion 10B is rotatably connected to the lower end portion of the outer unit structural body 5A.

Here, the support member 8 connected to the arm 3 is provided, and the support member 8 and the arm 3 are connected by the cylinder device 9. The adjusting means 7 for adjusting the horizontal angle of the unit 5 is provided. Equivalent to the unit 5, 2
A configuration in which one unit structure body 5A, 5B is formed, and two unit structure bodies 5A, 5B are connected to each other via the cylinder device 10 corresponds to the elevating means 6 for vertically elevating the unit 5. .

In such a structure, the expansion / contraction operation of the cylinder device 10 causes the inner unit structure 5B to slide with respect to the outer unit structure 5A, so that the unit 5 is moved up and down in a substantially vertical direction. The mixing device 4 at the tip is moved up and down. On the other hand, the extension / contraction operation of the cylinder device 9 causes the support member 8 to incline with respect to the arm 3 and adjusts the horizontal angle of the unit 5.

According to this structure, since the unit 5 moves up and down as it is without rotating at the set position, the trajectory of mixing does not have a circular arc shape, and the finished shape management becomes easy. Is improved. Further, in such a configuration, it is not necessary for the operator to perform the joint alignment operation, and the joint portion can be easily constructed.

In the above embodiment, the unit 5
Since the adjusting means 7 for adjusting the horizontal angle of the unit 5 is provided, the verticality of the unit 5 in the horizontal direction can be easily corrected, and the vertical vertical movement of the unit 5 can be reliably performed.

[0018]

As described above, according to the first aspect of the invention, since the unit is moved up and down as it is without rotating at the set position, the mixing locus does not have an arc shape. Since the workmanship management is easy, the construction accuracy is improved and the joint portion is easily constructed.

According to the second aspect of the invention, since the adjusting means for adjusting the horizontal angle of the unit is provided, it is possible to easily correct the verticality of the unit in the horizontal direction.
The vertical movement of the unit can be surely performed vertically.
According to the invention described in claim 3, since the traveling portion of the self-propelled vehicle has a float structure, workability on a soft ground is improved.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the invention described in claims 1 and 2.

[Explanation of symbols]

 1 Soft ground improvement machine 2 Backhoe 3 Arm 4 Trencher type mixing device 5 Unit 6 Elevating means 7 Adjusting means

Claims (3)

[Claims] 1. A self-propelled vehicle, an arm whose base end is rotatably supported by the self-propelled vehicle, a distal end of the arm attached so as to extend in a substantially vertical direction, and a soil at the lower end. A soft ground improvement machine comprising: a unit provided with a mixing device for mixing the treatment material into the ground while stirring; and an elevating means for vertically elevating the unit in a substantially vertical direction. 2. The soft ground improvement machine according to claim 1, further comprising adjusting means for adjusting the horizontal angle of the unit in order to correct the verticality of the unit in the horizontal direction. 3. The soft ground improvement machine according to claim 1, wherein the traveling portion of the self-propelled vehicle has a float structure.