JPH0571122A - Inclination control method for multi shaft excavator - Google Patents

Abstract

PURPOSE:To measure and control the inclination of the whole of a multi-shaft excavator by a simple means. CONSTITUTION:Square tube portions 22 are fixed to the respective shaft centers of two augers 10a, 10c disposed on both side portions among three augers 10 of a three-shaft auger excavator. An insert type inclinometer is inserted to measure the respective inclinations. Accordingly, the inclination of the whole of a multi-shaft excavator can be grasped so as to control the linear motion performance of a soil column with high accuracy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilt control method for a multi-axis excavator for controlling the tilt and the direction of the tilt of a multi-axis excavator that excavates the ground by using a plurality of rotary excavating shafts such as an earth auger. Regarding

[0002]

2. Description of the Related Art For example, in a deep underground dam, a construction method is employed in which a solidifying material is injected while drilling holes with an auger rod to construct a water stop wall consisting of many columns of soil underground. .. In this construction method, in consideration of shortening the construction period, etc., use a multi-axis excavator with multiple auger rods and other rotating shafts to construct multiple soil columns by drilling once. There are many.

On the other hand, in the construction of such an underground dam, quality control such as continuity of water blocking wall and water blocking performance is particularly important.

In order to sufficiently secure this quality, it is necessary to control the hole accuracy such as the verticality of the excavation hole during ground drilling.

For this reason, conventionally, verticality control based on tilt data obtained by installing an inclinometer on one of a plurality of auger rods (for example, on a central rotating shaft in the case of a three-axis excavator) Was going on.

[0006] However, the method of managing the inclination of the entire excavator by installing the inclinometer on one rotary shaft representing a plurality of rotary shafts as described above has the following technical problems.

[0007]

That is, since the inclinometer is installed only on one axis that represents them among the plurality of rotary shafts, the inclinometer is not always installed when the deep drilling is performed as described above. It cannot be said that the tilt of one axis that is set represents all the tilts of the rotation axes, and deviation of the tilt occurs between the one axis where the inclinometer is installed and the other rotation axis. There is a possibility that a portion having insufficient strength may occur between the soil columns of the column row.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a tilt management method for a multi-axis excavator which can grasp the tilt of the entire multi-axis excavator.

[0009]

To achieve the above object, the present invention provides a tilt management method for a multi-axis excavator for managing the tilt of a multi-axis excavator having a plurality of rotary shafts. Among them, inclinometers are provided on two axes arranged on both sides.

[0010]

With the above construction, since the inclinometers are provided on the two rotary shafts arranged on both sides of the multi-axis excavator,
The tilt of the entire multi-axis excavator can be easily grasped based on the tilt amount and the direction of each of these rotary shafts.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

FIGS. 1 (a) and 1 (b) show the structure of an auger of a three-axis auger boring machine adopting the inclination control method according to the present invention.

In FIG. 1A, each hollow cylindrical auger 10 is provided.
In the outer periphery of the blade, a spiral moving blade 12 and a plate-shaped kneading blade 14 are formed at appropriate positions.

At the upper end of the auger 10, a rotary drive unit 16 is provided.
Are connected via a multi-axis device 18, and each of the three augers 10 is rotationally driven. The rotary drive unit 16 and the three augers 10 connected thereto are extended from a base machine (not shown) via a pulley 20 provided on the upper surface of the rotary drive unit 16. Suspended by a cable that

FIG. 1 (b) is a schematic cross-sectional view of the three augers 10 taken along the line BB in FIG. 1 (a). Of the three augers 10, the augers 10 arranged on both sides
A rectangular tube portion 22 is fixedly arranged at the axial center portion of each of a and 10c. A solidifying material such as cement milk is injected through the square tube portion 22.

An insertion type inclinometer 30 is inserted into the inside of the rectangular tube portion 22.

As shown in FIG. 2, the insertion type inclinometer 30 has a main body 30a having a cylindrical rod shape and a built-in inclination sensor, and the main body 30 is provided above and below the main body 30a.
A guide roller 30b is provided which protrudes on both sides of a and is urged by a spring material (not shown) in the protruding direction, and each guide roller 30b is inserted by abutting on the diagonal inner side of the square tube portion 22. The inclinometer 30 is positioned in the circumferential direction.

The insertion type inclinometer 30 is provided with a cable 40, which is raised and lowered to be installed at an arbitrary position in the depth direction for measurement.

Next, the operation of the present embodiment having the above-mentioned structure will be described. The rectangular pipe portion 22 is provided at each of the axes of the two augers 10a and 10c arranged on both sides of the triaxial auger drilling machine. Is fixedly arranged, and the inclination of each of the augers 10a and 10c is measured by inserting the insertion type inclinometer 30 into the rectangular tube portion 22, so that only the inclination of the auger 10b, which is the conventional central axis, is measured. The tilt of the whole auger drilling machine, which could not be grasped with, can be grasped.

That is, as shown in FIG. 3, when the triaxial auger boring machine is displaced, the auger 1 serving as the central axis is formed.
With only 0b displacement, three augers 10a, 10b, 1
It is not possible to know the total displacement of 0c, but if the displacements of the two augers 10a, 10c located on both sides are measured, the displacement of the central auger 10b will also be the same as that of the two augers 10a, 10c. Since it is obtained by interpolating the displacement, the displacement of the entire triaxial auger drilling machine can be known.

This is also applicable to a biaxial or more auger boring machine including the triaxial boring machine described in this embodiment or other rotary multi-axis boring machine.

Further, in this embodiment, the insertion type inclinometer 3 is used.
Although 0 is used, a fixed inclinometer may be used. Further, the conduit for raising the measurement cable from the inclinometer to the ground is not the conduit of the rectangular cross section shown in the present embodiment, but the conduit of the cross section having other suitable cross section, and this conduit is the rotary shaft. It may be disposed at an appropriate position other than the axis center of.

[0023]

As described above in detail with reference to the embodiments, in the tilt management method for a multi-axis excavator according to the present invention, two rotary shafts arranged on both sides of the multi-axis excavator are used. Since each is equipped with an inclinometer, the tilt amount and direction of each of these rotary shafts can be accurately measured, the tilt of the entire multi-axis excavator can be easily grasped, and the straightness of the soil column can be accurately measured. Can be managed at.

[Brief description of drawings]

FIG. 1 (a) is a front view showing a main part of a triaxial auger boring machine according to an embodiment of the present invention, and FIG. 1 (b) is a schematic cross-sectional view taken along the line BB of FIG. ..

FIG. 2 is a schematic side view showing a state in which an insertion type inclinometer is inserted into a rectangular tube portion.

FIG. 3 is a schematic plan view showing displacement of an auger of a triaxial auger boring machine.

[Explanation of symbols]

 10, 10a, 10b, 10c Auger 22 Square tube 30 Insert type inclinometer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ikuo Kono 2 Kanda Iwamotocho, Chiyoda-ku, Tokyo Naruyuki Industrial Co., Ltd. (72) Inventor Junichi Akita Kanda Iwamotocho, Chiyoda-ku, Tokyo Naruyuki Industrial Co., Ltd. Within

Claims (1)

[Claims] 1. A tilt management method for a multi-axis excavator for managing the tilt of a multi-axis excavator having a plurality of rotary shafts, wherein an inclinometer is provided on each of the two shafts of the rotary shaft. An inclination management method for a multi-axis excavator, which is provided.